merge code

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013-2014 winlin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#include <srs_core_client.hpp>
-
-#include <arpa/inet.h>
-#include <stdlib.h>
-
-using namespace std;
-
-#include <srs_core_error.hpp>
-#include <srs_core_log.hpp>
-#include <srs_core_rtmp.hpp>
-#include <srs_core_protocol.hpp>
-#include <srs_core_autofree.hpp>
-#include <srs_core_source.hpp>
-#include <srs_core_server.hpp>
-#include <srs_core_pithy_print.hpp>
-#include <srs_core_config.hpp>
-#include <srs_core_refer.hpp>
-#include <srs_core_hls.hpp>
-#include <srs_core_http.hpp>
-#include <srs_core_bandwidth.hpp>
-
-SrsClient::SrsClient(SrsServer* srs_server, st_netfd_t client_stfd)
-	: SrsConnection(srs_server, client_stfd)
-{
-	ip = NULL;
-	req = new SrsRequest();
-	res = new SrsResponse();
-	rtmp = new SrsRtmp(client_stfd);
-	refer = new SrsRefer();
-#ifdef SRS_HTTP	
-	http_hooks = new SrsHttpHooks();
-#endif
-	bandwidth = new SrsBandwidth();
-	
-	config->subscribe(this);
-}
-
-SrsClient::~SrsClient()
-{
-	config->unsubscribe(this);
-	
-	srs_freepa(ip);
-	srs_freep(req);
-	srs_freep(res);
-	srs_freep(rtmp);
-	srs_freep(refer);
-#ifdef SRS_HTTP	
-	srs_freep(http_hooks);
-#endif
-	srs_freep(bandwidth);
-}
-
-// TODO: return detail message when error for client.
-int SrsClient::do_cycle()
-{
-	int ret = ERROR_SUCCESS;
-	
-	if ((ret = get_peer_ip()) != ERROR_SUCCESS) {
-		srs_error("get peer ip failed. ret=%d", ret);
-		return ret;
-	}
-	srs_trace("get peer ip success. ip=%s, send_to=%"PRId64", recv_to=%"PRId64"", 
-		ip, SRS_SEND_TIMEOUT_US, SRS_RECV_TIMEOUT_US);
-
-	rtmp->set_recv_timeout(SRS_RECV_TIMEOUT_US);
-	rtmp->set_send_timeout(SRS_SEND_TIMEOUT_US);
-	
-	if ((ret = rtmp->handshake()) != ERROR_SUCCESS) {
-		srs_error("rtmp handshake failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("rtmp handshake success");
-	
-	if ((ret = rtmp->connect_app(req)) != ERROR_SUCCESS) {
-		srs_error("rtmp connect vhost/app failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("rtmp connect app success");
-	
-	if ((ret = check_vhost()) != ERROR_SUCCESS) {
-		srs_error("check vhost failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("check vhost success.");
-	
-	srs_trace("rtmp connect app success. "
-		"tcUrl=%s, pageUrl=%s, swfUrl=%s, schema=%s, vhost=%s, port=%s, app=%s", 
-		req->tcUrl.c_str(), req->pageUrl.c_str(), req->swfUrl.c_str(), 
-		req->schema.c_str(), req->vhost.c_str(), req->port.c_str(),
-		req->app.c_str());
-	
-	ret = service_cycle();
-	on_close();
-	
-	return ret;
-}
-
-int SrsClient::on_reload_vhost_removed(string vhost)
-{
-	int ret = ERROR_SUCCESS;
-	
-	if (req->vhost != vhost) {
-		return ret;
-	}
-	
-	// if the vhost connected is removed, disconnect the client.
-	srs_trace("vhost %s removed/disabled, close client url=%s", 
-		vhost.c_str(), req->get_stream_url().c_str());
-		
-	srs_close_stfd(stfd);
-	
-	return ret;
-}
-	
-int SrsClient::service_cycle()
-{	
-	int ret = ERROR_SUCCESS;
-	
-	if ((ret = rtmp->set_window_ack_size(2.5 * 1000 * 1000)) != ERROR_SUCCESS) {
-		srs_error("set window acknowledgement size failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("set window acknowledgement size success");
-		
-	if ((ret = rtmp->set_peer_bandwidth(2.5 * 1000 * 1000, 2)) != ERROR_SUCCESS) {
-		srs_error("set peer bandwidth failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("set peer bandwidth success");
-
-	// do bandwidth test if connect to the vhost which is for bandwidth check.
-	if (config->get_bw_check_enabled(req->vhost)) {
-		return bandwidth->bandwidth_test(req, stfd, rtmp);
-	}
-	
-	if ((ret = rtmp->response_connect_app(req)) != ERROR_SUCCESS) {
-		srs_error("response connect app failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("response connect app success");
-		
-	if ((ret = rtmp->on_bw_done()) != ERROR_SUCCESS) {
-		srs_error("on_bw_done failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("on_bw_done success");
-	
-	while (true) {
-		ret = stream_service_cycle();
-		
-		// stream service must terminated with error, never success.
-		srs_assert(ret != ERROR_SUCCESS);
-		
-		// when not system control error, fatal error, return.
-		if (!srs_is_system_control_error(ret)) {
-			srs_error("stream service cycle failed. ret=%d", ret);
-			return ret;
-		}
-		
-		// for "some" system control error, 
-		// logical accept and retry stream service.
-		if (ret == ERROR_CONTROL_RTMP_CLOSE) {
-			// set timeout to a larger value, for user paused.
-			rtmp->set_recv_timeout(SRS_PAUSED_SEND_TIMEOUT_US);
-			rtmp->set_send_timeout(SRS_PAUSED_SEND_TIMEOUT_US);
-			
-			srs_trace("control message(close) accept, retry stream service.");
-			continue;
-		}
-		
-		// for other system control message, fatal error.
-		srs_error("control message(%d) reject as error. ret=%d", ret, ret);
-		return ret;
-	}
-	
-	return ret;
-}
-
-int SrsClient::stream_service_cycle()
-{
-	int ret = ERROR_SUCCESS;
-		
-	SrsClientType type;
-	if ((ret = rtmp->identify_client(res->stream_id, type, req->stream)) != ERROR_SUCCESS) {
-		srs_error("identify client failed. ret=%d", ret);
-		return ret;
-	}
-	req->strip();
-	srs_trace("identify client success. type=%d, stream_name=%s", type, req->stream.c_str());
-
-	// client is identified, set the timeout to service timeout.
-	rtmp->set_recv_timeout(SRS_RECV_TIMEOUT_US);
-	rtmp->set_send_timeout(SRS_SEND_TIMEOUT_US);
-	
-	// set timeout to larger.
-    int chunk_size = config->get_chunk_size(req->vhost);
-	if ((ret = rtmp->set_chunk_size(chunk_size)) != ERROR_SUCCESS) {
-		srs_error("set chunk_size=%d failed. ret=%d", chunk_size, ret);
-		return ret;
-	}
-	srs_trace("set chunk_size=%d success", chunk_size);
-	
-	// find a source to publish.
-	SrsSource* source = SrsSource::find(req);
-	srs_assert(source != NULL);
-	
-	// check publish available.
-	if (type != SrsClientPlay && !source->can_publish()) {
-		ret = ERROR_SYSTEM_STREAM_BUSY;
-		srs_warn("stream %s is already publishing. ret=%d", 
-			req->get_stream_url().c_str(), ret);
-		// to delay request
-		st_usleep(SRS_STREAM_BUSY_SLEEP_US);
-		return ret;
-	}
-	
-	bool enabled_cache = config->get_gop_cache(req->vhost);
-	srs_info("source found, url=%s, enabled_cache=%d", req->get_stream_url().c_str(), enabled_cache);
-	source->set_cache(enabled_cache);
-	
-	switch (type) {
-		case SrsClientPlay: {
-			srs_verbose("start to play stream %s.", req->stream.c_str());
-			
-			if ((ret = rtmp->start_play(res->stream_id)) != ERROR_SUCCESS) {
-				srs_error("start to play stream failed. ret=%d", ret);
-				return ret;
-			}
-			if ((ret = on_play()) != ERROR_SUCCESS) {
-				srs_error("http hook on_play failed. ret=%d", ret);
-				return ret;
-			}
-			srs_info("start to play stream %s success", req->stream.c_str());
-			ret = playing(source);
-			on_stop();
-			return ret;
-		}
-		case SrsClientFMLEPublish: {
-			srs_verbose("FMLE start to publish stream %s.", req->stream.c_str());
-			
-			if ((ret = rtmp->start_fmle_publish(res->stream_id)) != ERROR_SUCCESS) {
-				srs_error("start to publish stream failed. ret=%d", ret);
-				return ret;
-			}
-			if ((ret = on_publish()) != ERROR_SUCCESS) {
-				srs_error("http hook on_publish failed. ret=%d", ret);
-				return ret;
-			}
-			srs_info("start to publish stream %s success", req->stream.c_str());
-			ret = publish(source, true);
-			source->on_unpublish();
-			on_unpublish();
-			return ret;
-		}
-		case SrsClientFlashPublish: {
-			srs_verbose("flash start to publish stream %s.", req->stream.c_str());
-			
-			if ((ret = rtmp->start_flash_publish(res->stream_id)) != ERROR_SUCCESS) {
-				srs_error("flash start to publish stream failed. ret=%d", ret);
-				return ret;
-			}
-			if ((ret = on_publish()) != ERROR_SUCCESS) {
-				srs_error("http hook on_publish failed. ret=%d", ret);
-				return ret;
-			}
-			srs_info("flash start to publish stream %s success", req->stream.c_str());
-			ret = publish(source, false);
-			source->on_unpublish();
-			on_unpublish();
-			return ret;
-		}
-		default: {
-			ret = ERROR_SYSTEM_CLIENT_INVALID;
-			srs_info("invalid client type=%d. ret=%d", type, ret);
-			return ret;
-		}
-	}
-	
-	return ret;
-}
-
-int SrsClient::check_vhost()
-{
-	int ret = ERROR_SUCCESS;
-	
-	srs_assert(req != NULL);
-	
-	SrsConfDirective* vhost = config->get_vhost(req->vhost);
-	if (vhost == NULL) {
-		ret = ERROR_RTMP_VHOST_NOT_FOUND;
-		srs_error("vhost %s not found. ret=%d", req->vhost.c_str(), ret);
-		return ret;
-	}
-	
-	if (!config->get_vhost_enabled(req->vhost)) {
-		ret = ERROR_RTMP_VHOST_NOT_FOUND;
-		srs_error("vhost %s disabled. ret=%d", req->vhost.c_str(), ret);
-		return ret;
-	}
-	
-	if (req->vhost != vhost->arg0()) {
-		srs_trace("vhost change from %s to %s", req->vhost.c_str(), vhost->arg0().c_str());
-		req->vhost = vhost->arg0();
-	}
-	
-	if ((ret = refer->check(req->pageUrl, config->get_refer(req->vhost))) != ERROR_SUCCESS) {
-		srs_error("check refer failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("check refer success.");
-	
-	if ((ret = on_connect()) != ERROR_SUCCESS) {
-		return ret;
-	}
-	
-	return ret;
-}
-
-int SrsClient::playing(SrsSource* source)
-{
-	int ret = ERROR_SUCCESS;
-	
-	if ((ret = refer->check(req->pageUrl, config->get_refer_play(req->vhost))) != ERROR_SUCCESS) {
-		srs_error("check play_refer failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("check play_refer success.");
-	
-	SrsConsumer* consumer = NULL;
-	if ((ret = source->create_consumer(consumer)) != ERROR_SUCCESS) {
-		srs_error("create consumer failed. ret=%d", ret);
-		return ret;
-	}
-	
-	srs_assert(consumer != NULL);
-	SrsAutoFree(SrsConsumer, consumer, false);
-	srs_verbose("consumer created success.");
-	
-	rtmp->set_recv_timeout(SRS_PULSE_TIMEOUT_US);
-	
-	SrsPithyPrint pithy_print(SRS_STAGE_PLAY_USER);
-
-	while (true) {
-		pithy_print.elapse(SRS_PULSE_TIMEOUT_US / 1000);
-		
-		// switch to other st-threads.
-		st_usleep(0);
-
-		// read from client.
-		int ctl_msg_ret = ERROR_SUCCESS;
-		if (true) {
-			SrsCommonMessage* msg = NULL;
-			ctl_msg_ret = ret = rtmp->recv_message(&msg);
-			
-			srs_verbose("play loop recv message. ret=%d", ret);
-			if (ret != ERROR_SUCCESS && ret != ERROR_SOCKET_TIMEOUT) {
-				srs_error("recv client control message failed. ret=%d", ret);
-				return ret;
-			}
-			if ((ret = process_play_control_msg(consumer, msg)) != ERROR_SUCCESS) {
-				if (!srs_is_system_control_error(ret)) {
-					srs_error("process play control message failed. ret=%d", ret);
-				}
-				return ret;
-			}
-		}
-		
-		// get messages from consumer.
-		SrsSharedPtrMessage** msgs = NULL;
-		int count = 0;
-		if ((ret = consumer->get_packets(0, msgs, count)) != ERROR_SUCCESS) {
-			srs_error("get messages from consumer failed. ret=%d", ret);
-			return ret;
-		}
-
-		// reportable
-		if (pithy_print.can_print()) {
-			srs_trace("-> time=%"PRId64", cmr=%d, msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-				pithy_print.get_age(), ctl_msg_ret, count, rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
-		}
-		
-		if (count <= 0) {
-			srs_verbose("no packets in queue.");
-			continue;
-		}
-		SrsAutoFree(SrsSharedPtrMessage*, msgs, true);
-		
-		// sendout messages
-		for (int i = 0; i < count; i++) {
-			SrsSharedPtrMessage* msg = msgs[i];
-			
-			// the send_message will free the msg, 
-			// so set the msgs[i] to NULL.
-			msgs[i] = NULL;
-			
-			if ((ret = rtmp->send_message(msg)) != ERROR_SUCCESS) {
-				srs_error("send message to client failed. ret=%d", ret);
-				return ret;
-			}
-		}
-	}
-	
-	return ret;
-}
-
-int SrsClient::publish(SrsSource* source, bool is_fmle)
-{
-	int ret = ERROR_SUCCESS;
-	
-	if ((ret = refer->check(req->pageUrl, config->get_refer_publish(req->vhost))) != ERROR_SUCCESS) {
-		srs_error("check publish_refer failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("check publish_refer success.");
-	
-	SrsPithyPrint pithy_print(SRS_STAGE_PUBLISH_USER);
-	
-	// notify the hls to prepare when publish start.
-	if ((ret = source->on_publish(req)) != ERROR_SUCCESS) {
-		srs_error("hls on_publish failed. ret=%d", ret);
-		return ret;
-	}
-	srs_verbose("hls on_publish success.");
-	
-	while (true) {
-		// switch to other st-threads.
-		st_usleep(0);
-		
-		SrsCommonMessage* msg = NULL;
-		if ((ret = rtmp->recv_message(&msg)) != ERROR_SUCCESS) {
-			srs_error("recv identify client message failed. ret=%d", ret);
-			return ret;
-		}
-
-		SrsAutoFree(SrsCommonMessage, msg, false);
-		
-		pithy_print.set_age(msg->header.timestamp);
-
-		// reportable
-		if (pithy_print.can_print()) {
-			srs_trace("<- time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-				pithy_print.get_age(), rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
-		}
-
-		if ((ret = process_publish_message(source, msg, is_fmle)) != ERROR_SUCCESS) {
-			srs_error("process publish message failed. ret=%d", ret);
-			return ret;
-		}
-	}
-	
-	return ret;
-}
-
-int SrsClient::process_publish_message(SrsSource* source, SrsCommonMessage* msg, bool is_fmle)
-{
-	int ret = ERROR_SUCCESS;
-	
-	// process audio packet
-	if (msg->header.is_audio()) {
-		if ((ret = source->on_audio(msg)) != ERROR_SUCCESS) {
-			srs_error("source process audio message failed. ret=%d", ret);
-			return ret;
-		}
-	}
-	// process video packet
-	if (msg->header.is_video()) {
-		if ((ret = source->on_video(msg)) != ERROR_SUCCESS) {
-			srs_error("source process video message failed. ret=%d", ret);
-			return ret;
-		}
-	}
-	
-	// process onMetaData
-	if (msg->header.is_amf0_data() || msg->header.is_amf3_data()) {
-		if ((ret = msg->decode_packet(rtmp->get_protocol())) != ERROR_SUCCESS) {
-			srs_error("decode onMetaData message failed. ret=%d", ret);
-			return ret;
-		}
-	
-		SrsPacket* pkt = msg->get_packet();
-		if (dynamic_cast<SrsOnMetaDataPacket*>(pkt)) {
-			SrsOnMetaDataPacket* metadata = dynamic_cast<SrsOnMetaDataPacket*>(pkt);
-			if ((ret = source->on_meta_data(msg, metadata)) != ERROR_SUCCESS) {
-				srs_error("source process onMetaData message failed. ret=%d", ret);
-				return ret;
-			}
-			srs_trace("process onMetaData message success.");
-			return ret;
-		}
-		
-		srs_trace("ignore AMF0/AMF3 data message.");
-		return ret;
-	}
-	
-	// process UnPublish event.
-	if (msg->header.is_amf0_command() || msg->header.is_amf3_command()) {
-		if ((ret = msg->decode_packet(rtmp->get_protocol())) != ERROR_SUCCESS) {
-			srs_error("decode unpublish message failed. ret=%d", ret);
-			return ret;
-		}
-		
-		// flash unpublish.
-		if (!is_fmle) {
-			srs_trace("flash publish finished.");
-			return ret;
-		}
-	
-		SrsPacket* pkt = msg->get_packet();
-		if (dynamic_cast<SrsFMLEStartPacket*>(pkt)) {
-			SrsFMLEStartPacket* unpublish = dynamic_cast<SrsFMLEStartPacket*>(pkt);
-			return rtmp->fmle_unpublish(res->stream_id, unpublish->transaction_id);
-		}
-		
-		srs_trace("ignore AMF0/AMF3 command message.");
-		return ret;
-	}
-	
-	return ret;
-}
-
-int SrsClient::get_peer_ip()
-{
-	int ret = ERROR_SUCCESS;
-	
-    int fd = st_netfd_fileno(stfd);
-    
-    // discovery client information
-    sockaddr_in addr;
-    socklen_t addrlen = sizeof(addr);
-    if (getpeername(fd, (sockaddr*)&addr, &addrlen) == -1) {
-        ret = ERROR_SOCKET_GET_PEER_NAME;
-        srs_error("discovery client information failed. ret=%d", ret);
-        return ret;
-    }
-    srs_verbose("get peer name success.");
-
-    // ip v4 or v6
-    char buf[INET6_ADDRSTRLEN];
-    memset(buf, 0, sizeof(buf));
-    
-    if ((inet_ntop(addr.sin_family, &addr.sin_addr, buf, sizeof(buf))) == NULL) {
-        ret = ERROR_SOCKET_GET_PEER_IP;
-        srs_error("convert client information failed. ret=%d", ret);
-        return ret;
-    }
-    srs_verbose("get peer ip of client ip=%s, fd=%d", buf, fd);
-    
-    ip = new char[strlen(buf) + 1];
-    strcpy(ip, buf);
-    
-    srs_verbose("get peer ip success. ip=%s, fd=%d", ip, fd);
-    
-    return ret;
-}
-
-int SrsClient::process_play_control_msg(SrsConsumer* consumer, SrsCommonMessage* msg)
-{
-	int ret = ERROR_SUCCESS;
-	
-	if (!msg) {
-		srs_verbose("ignore all empty message.");
-		return ret;
-	}
-	SrsAutoFree(SrsCommonMessage, msg, false);
-	
-	if (!msg->header.is_amf0_command() && !msg->header.is_amf3_command()) {
-		srs_info("ignore all message except amf0/amf3 command.");
-		return ret;
-	}
-	
-	if ((ret = msg->decode_packet(rtmp->get_protocol())) != ERROR_SUCCESS) {
-		srs_error("decode the amf0/amf3 command packet failed. ret=%d", ret);
-		return ret;
-	}
-	srs_info("decode the amf0/amf3 command packet success.");
-	
-	SrsCloseStreamPacket* close = dynamic_cast<SrsCloseStreamPacket*>(msg->get_packet());
-	if (close) {
-		ret = ERROR_CONTROL_RTMP_CLOSE;
-		srs_trace("system control message: rtmp close stream. ret=%d", ret);
-		return ret;
-	}
-	
-	SrsPausePacket* pause = dynamic_cast<SrsPausePacket*>(msg->get_packet());
-	if (!pause) {
-		srs_info("ignore all amf0/amf3 command except pause.");
-		return ret;
-	}
-	
-	if ((ret = rtmp->on_play_client_pause(res->stream_id, pause->is_pause)) != ERROR_SUCCESS) {
-		srs_error("rtmp process play client pause failed. ret=%d", ret);
-		return ret;
-	}
-	
-	if ((ret = consumer->on_play_client_pause(pause->is_pause)) != ERROR_SUCCESS) {
-		srs_error("consumer process play client pause failed. ret=%d", ret);
-		return ret;
-	}
-	srs_info("process pause success, is_pause=%d, time=%d.", pause->is_pause, pause->time_ms);
-	
-    return ret;
-}
-
-int SrsClient::on_connect()
-{
-	int ret = ERROR_SUCCESS;
-	
-#ifdef SRS_HTTP	
-	// HTTP: on_connect 
-	SrsConfDirective* on_connect = config->get_vhost_on_connect(req->vhost);
-	if (!on_connect) {
-		srs_info("ignore the empty http callback: on_connect");
-		return ret;
-	}
-	
-	for (int i = 0; i < (int)on_connect->args.size(); i++) {
-		std::string url = on_connect->args.at(i);
-		if ((ret = http_hooks->on_connect(url, connection_id, ip, req)) != ERROR_SUCCESS) {
-			srs_error("hook client on_connect failed. url=%s, ret=%d", url.c_str(), ret);
-			return ret;
-		}
-	}
-#endif
-
-    return ret;
-}
-
-void SrsClient::on_close()
-{
-#ifdef SRS_HTTP
-	// whatever the ret code, notify the api hooks.
-	// HTTP: on_close 
-	SrsConfDirective* on_close = config->get_vhost_on_close(req->vhost);
-	if (!on_close) {
-		srs_info("ignore the empty http callback: on_close");
-		return;
-	}
-	
-	for (int i = 0; i < (int)on_close->args.size(); i++) {
-		std::string url = on_close->args.at(i);
-		http_hooks->on_close(url, connection_id, ip, req);
-	}
-#endif
-}
-
-int SrsClient::on_publish()
-{
-	int ret = ERROR_SUCCESS;
-	
-#ifdef SRS_HTTP	
-	// HTTP: on_publish 
-	SrsConfDirective* on_publish = config->get_vhost_on_publish(req->vhost);
-	if (!on_publish) {
-		srs_info("ignore the empty http callback: on_publish");
-		return ret;
-	}
-	
-	for (int i = 0; i < (int)on_publish->args.size(); i++) {
-		std::string url = on_publish->args.at(i);
-		if ((ret = http_hooks->on_publish(url, connection_id, ip, req)) != ERROR_SUCCESS) {
-			srs_error("hook client on_publish failed. url=%s, ret=%d", url.c_str(), ret);
-			return ret;
-		}
-	}
-#endif
-
-    return ret;
-}
-
-void SrsClient::on_unpublish()
-{
-#ifdef SRS_HTTP
-	// whatever the ret code, notify the api hooks.
-	// HTTP: on_unpublish 
-	SrsConfDirective* on_unpublish = config->get_vhost_on_unpublish(req->vhost);
-	if (!on_unpublish) {
-		srs_info("ignore the empty http callback: on_unpublish");
-		return;
-	}
-	
-	for (int i = 0; i < (int)on_unpublish->args.size(); i++) {
-		std::string url = on_unpublish->args.at(i);
-		http_hooks->on_unpublish(url, connection_id, ip, req);
-	}
-#endif
-}
-
-int SrsClient::on_play()
-{
-	int ret = ERROR_SUCCESS;
-	
-#ifdef SRS_HTTP	
-	// HTTP: on_play 
-	SrsConfDirective* on_play = config->get_vhost_on_play(req->vhost);
-	if (!on_play) {
-		srs_info("ignore the empty http callback: on_play");
-		return ret;
-	}
-	
-	for (int i = 0; i < (int)on_play->args.size(); i++) {
-		std::string url = on_play->args.at(i);
-		if ((ret = http_hooks->on_play(url, connection_id, ip, req)) != ERROR_SUCCESS) {
-			srs_error("hook client on_play failed. url=%s, ret=%d", url.c_str(), ret);
-			return ret;
-		}
-	}
-#endif
-
-    return ret;
-}
-
-void SrsClient::on_stop()
-{
-#ifdef SRS_HTTP
-	// whatever the ret code, notify the api hooks.
-	// HTTP: on_stop 
-	SrsConfDirective* on_stop = config->get_vhost_on_stop(req->vhost);
-	if (!on_stop) {
-		srs_info("ignore the empty http callback: on_stop");
-		return;
-	}
-	
-	for (int i = 0; i < (int)on_stop->args.size(); i++) {
-		std::string url = on_stop->args.at(i);
-		http_hooks->on_stop(url, connection_id, ip, req);
-	}
-#endif
-}
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <srs_core_client.hpp>
+
+#include <arpa/inet.h>
+#include <stdlib.h>
+
+using namespace std;
+
+#include <srs_core_error.hpp>
+#include <srs_core_log.hpp>
+#include <srs_core_rtmp.hpp>
+#include <srs_core_protocol.hpp>
+#include <srs_core_autofree.hpp>
+#include <srs_core_source.hpp>
+#include <srs_core_server.hpp>
+#include <srs_core_pithy_print.hpp>
+#include <srs_core_config.hpp>
+#include <srs_core_refer.hpp>
+#include <srs_core_hls.hpp>
+#include <srs_core_http.hpp>
+#include <srs_core_bandwidth.hpp>
+
+SrsClient::SrsClient(SrsServer* srs_server, st_netfd_t client_stfd)
+	: SrsConnection(srs_server, client_stfd)
+{
+	ip = NULL;
+	req = new SrsRequest();
+	res = new SrsResponse();
+	rtmp = new SrsRtmp(client_stfd);
+	refer = new SrsRefer();
+#ifdef SRS_HTTP	
+	http_hooks = new SrsHttpHooks();
+#endif
+	bandwidth = new SrsBandwidth();
+	
+	config->subscribe(this);
+}
+
+SrsClient::~SrsClient()
+{
+	config->unsubscribe(this);
+	
+	srs_freepa(ip);
+	srs_freep(req);
+	srs_freep(res);
+	srs_freep(rtmp);
+	srs_freep(refer);
+#ifdef SRS_HTTP	
+	srs_freep(http_hooks);
+#endif
+	srs_freep(bandwidth);
+}
+
+// TODO: return detail message when error for client.
+int SrsClient::do_cycle()
+{
+	int ret = ERROR_SUCCESS;
+	
+	if ((ret = get_peer_ip()) != ERROR_SUCCESS) {
+		srs_error("get peer ip failed. ret=%d", ret);
+		return ret;
+	}
+	srs_trace("get peer ip success. ip=%s, send_to=%"PRId64", recv_to=%"PRId64"", 
+		ip, SRS_SEND_TIMEOUT_US, SRS_RECV_TIMEOUT_US);
+
+	rtmp->set_recv_timeout(SRS_RECV_TIMEOUT_US);
+	rtmp->set_send_timeout(SRS_SEND_TIMEOUT_US);
+	
+	if ((ret = rtmp->handshake()) != ERROR_SUCCESS) {
+		srs_error("rtmp handshake failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("rtmp handshake success");
+	
+	if ((ret = rtmp->connect_app(req)) != ERROR_SUCCESS) {
+		srs_error("rtmp connect vhost/app failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("rtmp connect app success");
+	
+	if ((ret = check_vhost()) != ERROR_SUCCESS) {
+		srs_error("check vhost failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("check vhost success.");
+	
+	srs_trace("rtmp connect app success. "
+		"tcUrl=%s, pageUrl=%s, swfUrl=%s, schema=%s, vhost=%s, port=%s, app=%s", 
+		req->tcUrl.c_str(), req->pageUrl.c_str(), req->swfUrl.c_str(), 
+		req->schema.c_str(), req->vhost.c_str(), req->port.c_str(),
+		req->app.c_str());
+	
+	ret = service_cycle();
+	on_close();
+	
+	return ret;
+}
+
+int SrsClient::on_reload_vhost_removed(string vhost)
+{
+	int ret = ERROR_SUCCESS;
+	
+	if (req->vhost != vhost) {
+		return ret;
+	}
+	
+	// if the vhost connected is removed, disconnect the client.
+	srs_trace("vhost %s removed/disabled, close client url=%s", 
+		vhost.c_str(), req->get_stream_url().c_str());
+		
+	srs_close_stfd(stfd);
+	
+	return ret;
+}
+	
+int SrsClient::service_cycle()
+{	
+	int ret = ERROR_SUCCESS;
+	
+	if ((ret = rtmp->set_window_ack_size(2.5 * 1000 * 1000)) != ERROR_SUCCESS) {
+		srs_error("set window acknowledgement size failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("set window acknowledgement size success");
+		
+	if ((ret = rtmp->set_peer_bandwidth(2.5 * 1000 * 1000, 2)) != ERROR_SUCCESS) {
+		srs_error("set peer bandwidth failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("set peer bandwidth success");
+
+	// do bandwidth test if connect to the vhost which is for bandwidth check.
+	if (config->get_bw_check_enabled(req->vhost)) {
+		return bandwidth->bandwidth_test(req, stfd, rtmp);
+	}
+	
+	if ((ret = rtmp->response_connect_app(req)) != ERROR_SUCCESS) {
+		srs_error("response connect app failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("response connect app success");
+		
+	if ((ret = rtmp->on_bw_done()) != ERROR_SUCCESS) {
+		srs_error("on_bw_done failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("on_bw_done success");
+	
+	while (true) {
+		ret = stream_service_cycle();
+		
+		// stream service must terminated with error, never success.
+		srs_assert(ret != ERROR_SUCCESS);
+		
+		// when not system control error, fatal error, return.
+		if (!srs_is_system_control_error(ret)) {
+			srs_error("stream service cycle failed. ret=%d", ret);
+			return ret;
+		}
+		
+		// for "some" system control error, 
+		// logical accept and retry stream service.
+		if (ret == ERROR_CONTROL_RTMP_CLOSE) {
+			// set timeout to a larger value, for user paused.
+			rtmp->set_recv_timeout(SRS_PAUSED_SEND_TIMEOUT_US);
+			rtmp->set_send_timeout(SRS_PAUSED_SEND_TIMEOUT_US);
+			
+			srs_trace("control message(close) accept, retry stream service.");
+			continue;
+		}
+		
+		// for other system control message, fatal error.
+		srs_error("control message(%d) reject as error. ret=%d", ret, ret);
+		return ret;
+	}
+	
+	return ret;
+}
+
+int SrsClient::stream_service_cycle()
+{
+	int ret = ERROR_SUCCESS;
+		
+	SrsClientType type;
+	if ((ret = rtmp->identify_client(res->stream_id, type, req->stream)) != ERROR_SUCCESS) {
+		srs_error("identify client failed. ret=%d", ret);
+		return ret;
+	}
+	req->strip();
+	srs_trace("identify client success. type=%d, stream_name=%s", type, req->stream.c_str());
+
+	// client is identified, set the timeout to service timeout.
+	rtmp->set_recv_timeout(SRS_RECV_TIMEOUT_US);
+	rtmp->set_send_timeout(SRS_SEND_TIMEOUT_US);
+	
+	// set timeout to larger.
+    int chunk_size = config->get_chunk_size(req->vhost);
+	if ((ret = rtmp->set_chunk_size(chunk_size)) != ERROR_SUCCESS) {
+		srs_error("set chunk_size=%d failed. ret=%d", chunk_size, ret);
+		return ret;
+	}
+	srs_trace("set chunk_size=%d success", chunk_size);
+	
+	// find a source to publish.
+	SrsSource* source = SrsSource::find(req);
+	srs_assert(source != NULL);
+	
+	// check publish available.
+	if (type != SrsClientPlay && !source->can_publish()) {
+		ret = ERROR_SYSTEM_STREAM_BUSY;
+		srs_warn("stream %s is already publishing. ret=%d", 
+			req->get_stream_url().c_str(), ret);
+		// to delay request
+		st_usleep(SRS_STREAM_BUSY_SLEEP_US);
+		return ret;
+	}
+	
+	bool enabled_cache = config->get_gop_cache(req->vhost);
+	srs_info("source found, url=%s, enabled_cache=%d", req->get_stream_url().c_str(), enabled_cache);
+	source->set_cache(enabled_cache);
+	
+	switch (type) {
+		case SrsClientPlay: {
+			srs_verbose("start to play stream %s.", req->stream.c_str());
+			
+			if ((ret = rtmp->start_play(res->stream_id)) != ERROR_SUCCESS) {
+				srs_error("start to play stream failed. ret=%d", ret);
+				return ret;
+			}
+			if ((ret = on_play()) != ERROR_SUCCESS) {
+				srs_error("http hook on_play failed. ret=%d", ret);
+				return ret;
+			}
+			srs_info("start to play stream %s success", req->stream.c_str());
+			ret = playing(source);
+			on_stop();
+			return ret;
+		}
+		case SrsClientFMLEPublish: {
+			srs_verbose("FMLE start to publish stream %s.", req->stream.c_str());
+			
+			if ((ret = rtmp->start_fmle_publish(res->stream_id)) != ERROR_SUCCESS) {
+				srs_error("start to publish stream failed. ret=%d", ret);
+				return ret;
+			}
+			if ((ret = on_publish()) != ERROR_SUCCESS) {
+				srs_error("http hook on_publish failed. ret=%d", ret);
+				return ret;
+			}
+			srs_info("start to publish stream %s success", req->stream.c_str());
+			ret = publish(source, true);
+			source->on_unpublish();
+			on_unpublish();
+			return ret;
+		}
+		case SrsClientFlashPublish: {
+			srs_verbose("flash start to publish stream %s.", req->stream.c_str());
+			
+			if ((ret = rtmp->start_flash_publish(res->stream_id)) != ERROR_SUCCESS) {
+				srs_error("flash start to publish stream failed. ret=%d", ret);
+				return ret;
+			}
+			if ((ret = on_publish()) != ERROR_SUCCESS) {
+				srs_error("http hook on_publish failed. ret=%d", ret);
+				return ret;
+			}
+			srs_info("flash start to publish stream %s success", req->stream.c_str());
+			ret = publish(source, false);
+			source->on_unpublish();
+			on_unpublish();
+			return ret;
+		}
+		default: {
+			ret = ERROR_SYSTEM_CLIENT_INVALID;
+			srs_info("invalid client type=%d. ret=%d", type, ret);
+			return ret;
+		}
+	}
+	
+	return ret;
+}
+
+int SrsClient::check_vhost()
+{
+	int ret = ERROR_SUCCESS;
+	
+	srs_assert(req != NULL);
+	
+	SrsConfDirective* vhost = config->get_vhost(req->vhost);
+	if (vhost == NULL) {
+		ret = ERROR_RTMP_VHOST_NOT_FOUND;
+		srs_error("vhost %s not found. ret=%d", req->vhost.c_str(), ret);
+		return ret;
+	}
+	
+	if (!config->get_vhost_enabled(req->vhost)) {
+		ret = ERROR_RTMP_VHOST_NOT_FOUND;
+		srs_error("vhost %s disabled. ret=%d", req->vhost.c_str(), ret);
+		return ret;
+	}
+	
+	if (req->vhost != vhost->arg0()) {
+		srs_trace("vhost change from %s to %s", req->vhost.c_str(), vhost->arg0().c_str());
+		req->vhost = vhost->arg0();
+	}
+	
+	if ((ret = refer->check(req->pageUrl, config->get_refer(req->vhost))) != ERROR_SUCCESS) {
+		srs_error("check refer failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("check refer success.");
+	
+	if ((ret = on_connect()) != ERROR_SUCCESS) {
+		return ret;
+	}
+	
+	return ret;
+}
+
+int SrsClient::playing(SrsSource* source)
+{
+	int ret = ERROR_SUCCESS;
+	
+	if ((ret = refer->check(req->pageUrl, config->get_refer_play(req->vhost))) != ERROR_SUCCESS) {
+		srs_error("check play_refer failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("check play_refer success.");
+	
+	SrsConsumer* consumer = NULL;
+	if ((ret = source->create_consumer(consumer)) != ERROR_SUCCESS) {
+		srs_error("create consumer failed. ret=%d", ret);
+		return ret;
+	}
+	
+	srs_assert(consumer != NULL);
+	SrsAutoFree(SrsConsumer, consumer, false);
+	srs_verbose("consumer created success.");
+	
+	rtmp->set_recv_timeout(SRS_PULSE_TIMEOUT_US);
+	
+	SrsPithyPrint pithy_print(SRS_STAGE_PLAY_USER);
+
+	while (true) {
+		pithy_print.elapse(SRS_PULSE_TIMEOUT_US / 1000);
+		
+		// switch to other st-threads.
+		st_usleep(0);
+
+		// read from client.
+		int ctl_msg_ret = ERROR_SUCCESS;
+		if (true) {
+			SrsCommonMessage* msg = NULL;
+			ctl_msg_ret = ret = rtmp->recv_message(&msg);
+			
+			srs_verbose("play loop recv message. ret=%d", ret);
+			if (ret != ERROR_SUCCESS && ret != ERROR_SOCKET_TIMEOUT) {
+				srs_error("recv client control message failed. ret=%d", ret);
+				return ret;
+			}
+			if ((ret = process_play_control_msg(consumer, msg)) != ERROR_SUCCESS) {
+				if (!srs_is_system_control_error(ret)) {
+					srs_error("process play control message failed. ret=%d", ret);
+				}
+				return ret;
+			}
+		}
+		
+		// get messages from consumer.
+		SrsSharedPtrMessage** msgs = NULL;
+		int count = 0;
+		if ((ret = consumer->get_packets(0, msgs, count)) != ERROR_SUCCESS) {
+			srs_error("get messages from consumer failed. ret=%d", ret);
+			return ret;
+		}
+
+		// reportable
+		if (pithy_print.can_print()) {
+			srs_trace("-> time=%"PRId64", cmr=%d, msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+				pithy_print.get_age(), ctl_msg_ret, count, rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
+		}
+		
+		if (count <= 0) {
+			srs_verbose("no packets in queue.");
+			continue;
+		}
+		SrsAutoFree(SrsSharedPtrMessage*, msgs, true);
+		
+		// sendout messages
+		for (int i = 0; i < count; i++) {
+			SrsSharedPtrMessage* msg = msgs[i];
+			
+			// the send_message will free the msg, 
+			// so set the msgs[i] to NULL.
+			msgs[i] = NULL;
+			
+			if ((ret = rtmp->send_message(msg)) != ERROR_SUCCESS) {
+				srs_error("send message to client failed. ret=%d", ret);
+				return ret;
+			}
+		}
+	}
+	
+	return ret;
+}
+
+int SrsClient::publish(SrsSource* source, bool is_fmle)
+{
+	int ret = ERROR_SUCCESS;
+	
+	if ((ret = refer->check(req->pageUrl, config->get_refer_publish(req->vhost))) != ERROR_SUCCESS) {
+		srs_error("check publish_refer failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("check publish_refer success.");
+	
+	SrsPithyPrint pithy_print(SRS_STAGE_PUBLISH_USER);
+	
+	// notify the hls to prepare when publish start.
+	if ((ret = source->on_publish(req)) != ERROR_SUCCESS) {
+		srs_error("hls on_publish failed. ret=%d", ret);
+		return ret;
+	}
+	srs_verbose("hls on_publish success.");
+	
+	while (true) {
+		// switch to other st-threads.
+		st_usleep(0);
+		
+		SrsCommonMessage* msg = NULL;
+		if ((ret = rtmp->recv_message(&msg)) != ERROR_SUCCESS) {
+			srs_error("recv identify client message failed. ret=%d", ret);
+			return ret;
+		}
+
+		SrsAutoFree(SrsCommonMessage, msg, false);
+		
+		pithy_print.set_age(msg->header.timestamp);
+
+		// reportable
+		if (pithy_print.can_print()) {
+			srs_trace("<- time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+				pithy_print.get_age(), rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
+		}
+
+		if ((ret = process_publish_message(source, msg, is_fmle)) != ERROR_SUCCESS) {
+			srs_error("process publish message failed. ret=%d", ret);
+			return ret;
+		}
+	}
+	
+	return ret;
+}
+
+int SrsClient::process_publish_message(SrsSource* source, SrsCommonMessage* msg, bool is_fmle)
+{
+	int ret = ERROR_SUCCESS;
+	
+	// process audio packet
+	if (msg->header.is_audio()) {
+		if ((ret = source->on_audio(msg)) != ERROR_SUCCESS) {
+			srs_error("source process audio message failed. ret=%d", ret);
+			return ret;
+		}
+	}
+	// process video packet
+	if (msg->header.is_video()) {
+		if ((ret = source->on_video(msg)) != ERROR_SUCCESS) {
+			srs_error("source process video message failed. ret=%d", ret);
+			return ret;
+		}
+	}
+	
+	// process onMetaData
+	if (msg->header.is_amf0_data() || msg->header.is_amf3_data()) {
+		if ((ret = msg->decode_packet(rtmp->get_protocol())) != ERROR_SUCCESS) {
+			srs_error("decode onMetaData message failed. ret=%d", ret);
+			return ret;
+		}
+	
+		SrsPacket* pkt = msg->get_packet();
+		if (dynamic_cast<SrsOnMetaDataPacket*>(pkt)) {
+			SrsOnMetaDataPacket* metadata = dynamic_cast<SrsOnMetaDataPacket*>(pkt);
+			if ((ret = source->on_meta_data(msg, metadata)) != ERROR_SUCCESS) {
+				srs_error("source process onMetaData message failed. ret=%d", ret);
+				return ret;
+			}
+			srs_trace("process onMetaData message success.");
+			return ret;
+		}
+		
+		srs_trace("ignore AMF0/AMF3 data message.");
+		return ret;
+	}
+	
+	// process UnPublish event.
+	if (msg->header.is_amf0_command() || msg->header.is_amf3_command()) {
+		if ((ret = msg->decode_packet(rtmp->get_protocol())) != ERROR_SUCCESS) {
+			srs_error("decode unpublish message failed. ret=%d", ret);
+			return ret;
+		}
+		
+		// flash unpublish.
+		if (!is_fmle) {
+			srs_trace("flash publish finished.");
+			return ret;
+		}
+	
+		SrsPacket* pkt = msg->get_packet();
+		if (dynamic_cast<SrsFMLEStartPacket*>(pkt)) {
+			SrsFMLEStartPacket* unpublish = dynamic_cast<SrsFMLEStartPacket*>(pkt);
+			return rtmp->fmle_unpublish(res->stream_id, unpublish->transaction_id);
+		}
+		
+		srs_trace("ignore AMF0/AMF3 command message.");
+		return ret;
+	}
+	
+	return ret;
+}
+
+int SrsClient::get_peer_ip()
+{
+	int ret = ERROR_SUCCESS;
+	
+    int fd = st_netfd_fileno(stfd);
+    
+    // discovery client information
+    sockaddr_in addr;
+    socklen_t addrlen = sizeof(addr);
+    if (getpeername(fd, (sockaddr*)&addr, &addrlen) == -1) {
+        ret = ERROR_SOCKET_GET_PEER_NAME;
+        srs_error("discovery client information failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("get peer name success.");
+
+    // ip v4 or v6
+    char buf[INET6_ADDRSTRLEN];
+    memset(buf, 0, sizeof(buf));
+    
+    if ((inet_ntop(addr.sin_family, &addr.sin_addr, buf, sizeof(buf))) == NULL) {
+        ret = ERROR_SOCKET_GET_PEER_IP;
+        srs_error("convert client information failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("get peer ip of client ip=%s, fd=%d", buf, fd);
+    
+    ip = new char[strlen(buf) + 1];
+    strcpy(ip, buf);
+    
+    srs_verbose("get peer ip success. ip=%s, fd=%d", ip, fd);
+    
+    return ret;
+}
+
+int SrsClient::process_play_control_msg(SrsConsumer* consumer, SrsCommonMessage* msg)
+{
+	int ret = ERROR_SUCCESS;
+	
+	if (!msg) {
+		srs_verbose("ignore all empty message.");
+		return ret;
+	}
+	SrsAutoFree(SrsCommonMessage, msg, false);
+	
+	if (!msg->header.is_amf0_command() && !msg->header.is_amf3_command()) {
+		srs_info("ignore all message except amf0/amf3 command.");
+		return ret;
+	}
+	
+	if ((ret = msg->decode_packet(rtmp->get_protocol())) != ERROR_SUCCESS) {
+		srs_error("decode the amf0/amf3 command packet failed. ret=%d", ret);
+		return ret;
+	}
+	srs_info("decode the amf0/amf3 command packet success.");
+	
+	SrsCloseStreamPacket* close = dynamic_cast<SrsCloseStreamPacket*>(msg->get_packet());
+	if (close) {
+		ret = ERROR_CONTROL_RTMP_CLOSE;
+		srs_trace("system control message: rtmp close stream. ret=%d", ret);
+		return ret;
+	}
+	
+	SrsPausePacket* pause = dynamic_cast<SrsPausePacket*>(msg->get_packet());
+	if (!pause) {
+		srs_info("ignore all amf0/amf3 command except pause.");
+		return ret;
+	}
+	
+	if ((ret = rtmp->on_play_client_pause(res->stream_id, pause->is_pause)) != ERROR_SUCCESS) {
+		srs_error("rtmp process play client pause failed. ret=%d", ret);
+		return ret;
+	}
+	
+	if ((ret = consumer->on_play_client_pause(pause->is_pause)) != ERROR_SUCCESS) {
+		srs_error("consumer process play client pause failed. ret=%d", ret);
+		return ret;
+	}
+	srs_info("process pause success, is_pause=%d, time=%d.", pause->is_pause, pause->time_ms);
+	
+    return ret;
+}
+
+int SrsClient::on_connect()
+{
+	int ret = ERROR_SUCCESS;
+	
+#ifdef SRS_HTTP	
+	// HTTP: on_connect 
+	SrsConfDirective* on_connect = config->get_vhost_on_connect(req->vhost);
+	if (!on_connect) {
+		srs_info("ignore the empty http callback: on_connect");
+		return ret;
+	}
+	
+	for (int i = 0; i < (int)on_connect->args.size(); i++) {
+		std::string url = on_connect->args.at(i);
+		if ((ret = http_hooks->on_connect(url, connection_id, ip, req)) != ERROR_SUCCESS) {
+			srs_error("hook client on_connect failed. url=%s, ret=%d", url.c_str(), ret);
+			return ret;
+		}
+	}
+#endif
+
+    return ret;
+}
+
+void SrsClient::on_close()
+{
+#ifdef SRS_HTTP
+	// whatever the ret code, notify the api hooks.
+	// HTTP: on_close 
+	SrsConfDirective* on_close = config->get_vhost_on_close(req->vhost);
+	if (!on_close) {
+		srs_info("ignore the empty http callback: on_close");
+		return;
+	}
+	
+	for (int i = 0; i < (int)on_close->args.size(); i++) {
+		std::string url = on_close->args.at(i);
+		http_hooks->on_close(url, connection_id, ip, req);
+	}
+#endif
+}
+
+int SrsClient::on_publish()
+{
+	int ret = ERROR_SUCCESS;
+	
+#ifdef SRS_HTTP	
+	// HTTP: on_publish 
+	SrsConfDirective* on_publish = config->get_vhost_on_publish(req->vhost);
+	if (!on_publish) {
+		srs_info("ignore the empty http callback: on_publish");
+		return ret;
+	}
+	
+	for (int i = 0; i < (int)on_publish->args.size(); i++) {
+		std::string url = on_publish->args.at(i);
+		if ((ret = http_hooks->on_publish(url, connection_id, ip, req)) != ERROR_SUCCESS) {
+			srs_error("hook client on_publish failed. url=%s, ret=%d", url.c_str(), ret);
+			return ret;
+		}
+	}
+#endif
+
+    return ret;
+}
+
+void SrsClient::on_unpublish()
+{
+#ifdef SRS_HTTP
+	// whatever the ret code, notify the api hooks.
+	// HTTP: on_unpublish 
+	SrsConfDirective* on_unpublish = config->get_vhost_on_unpublish(req->vhost);
+	if (!on_unpublish) {
+		srs_info("ignore the empty http callback: on_unpublish");
+		return;
+	}
+	
+	for (int i = 0; i < (int)on_unpublish->args.size(); i++) {
+		std::string url = on_unpublish->args.at(i);
+		http_hooks->on_unpublish(url, connection_id, ip, req);
+	}
+#endif
+}
+
+int SrsClient::on_play()
+{
+	int ret = ERROR_SUCCESS;
+	
+#ifdef SRS_HTTP	
+	// HTTP: on_play 
+	SrsConfDirective* on_play = config->get_vhost_on_play(req->vhost);
+	if (!on_play) {
+		srs_info("ignore the empty http callback: on_play");
+		return ret;
+	}
+	
+	for (int i = 0; i < (int)on_play->args.size(); i++) {
+		std::string url = on_play->args.at(i);
+		if ((ret = http_hooks->on_play(url, connection_id, ip, req)) != ERROR_SUCCESS) {
+			srs_error("hook client on_play failed. url=%s, ret=%d", url.c_str(), ret);
+			return ret;
+		}
+	}
+#endif
+
+    return ret;
+}
+
+void SrsClient::on_stop()
+{
+#ifdef SRS_HTTP
+	// whatever the ret code, notify the api hooks.
+	// HTTP: on_stop 
+	SrsConfDirective* on_stop = config->get_vhost_on_stop(req->vhost);
+	if (!on_stop) {
+		srs_info("ignore the empty http callback: on_stop");
+		return;
+	}
+	
+	for (int i = 0; i < (int)on_stop->args.size(); i++) {
+		std::string url = on_stop->args.at(i);
+		http_hooks->on_stop(url, connection_id, ip, req);
+	}
+#endif
+}

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013-2014 winlin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#ifndef SRS_CORE_CLIENT_HPP
-#define SRS_CORE_CLIENT_HPP
-
-/*
-#include <srs_core_client.hpp>
-*/
-
-#include <srs_core.hpp>
-
-#include <srs_core_conn.hpp>
-#include <srs_core_reload.hpp>
-
-class SrsRtmp;
-class SrsRequest;
-class SrsResponse;
-class SrsSource;
-class SrsRefer;
-class SrsConsumer;
-class SrsCommonMessage;
-#ifdef SRS_HTTP	
-class SrsHttpHooks;
-#endif
-class SrsBandwidth;
-
-/**
-* the client provides the main logic control for RTMP clients.
-*/
-class SrsClient : public SrsConnection, public ISrsReloadHandler
-{
-private:
-	char* ip;
-	SrsRequest* req;
-	SrsResponse* res;
-	SrsRtmp* rtmp;
-	SrsRefer* refer;
-#ifdef SRS_HTTP	
-	SrsHttpHooks* http_hooks;
-#endif
-	SrsBandwidth* bandwidth;
-public:
-	SrsClient(SrsServer* srs_server, st_netfd_t client_stfd);
-	virtual ~SrsClient();
-protected:
-	virtual int do_cycle();
-// interface ISrsReloadHandler
-public:
-	virtual int on_reload_vhost_removed(std::string vhost);
-private:
-	// when valid and connected to vhost/app, service the client.
-	virtual int service_cycle();
-	// stream(play/publish) service cycle, identify client first.
-	virtual int stream_service_cycle();
-	virtual int check_vhost();
-	virtual int playing(SrsSource* source);
-	virtual int publish(SrsSource* source, bool is_fmle);
-	virtual int process_publish_message(SrsSource* source, SrsCommonMessage* msg, bool is_fmle);
-	virtual int get_peer_ip();
-	virtual int process_play_control_msg(SrsConsumer* consumer, SrsCommonMessage* msg);
-private:
-	virtual int on_connect();
-	virtual void on_close();
-	virtual int on_publish();
-	virtual void on_unpublish();
-	virtual int on_play();
-	virtual void on_stop();
-};
-
-#endif
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef SRS_CORE_CLIENT_HPP
+#define SRS_CORE_CLIENT_HPP
+
+/*
+#include <srs_core_client.hpp>
+*/
+
+#include <srs_core.hpp>
+
+#include <srs_core_conn.hpp>
+#include <srs_core_reload.hpp>
+
+class SrsRtmp;
+class SrsRequest;
+class SrsResponse;
+class SrsSource;
+class SrsRefer;
+class SrsConsumer;
+class SrsCommonMessage;
+#ifdef SRS_HTTP	
+class SrsHttpHooks;
+#endif
+class SrsBandwidth;
+
+/**
+* the client provides the main logic control for RTMP clients.
+*/
+class SrsClient : public SrsConnection, public ISrsReloadHandler
+{
+private:
+	char* ip;
+	SrsRequest* req;
+	SrsResponse* res;
+	SrsRtmp* rtmp;
+	SrsRefer* refer;
+#ifdef SRS_HTTP	
+	SrsHttpHooks* http_hooks;
+#endif
+	SrsBandwidth* bandwidth;
+public:
+	SrsClient(SrsServer* srs_server, st_netfd_t client_stfd);
+	virtual ~SrsClient();
+protected:
+	virtual int do_cycle();
+// interface ISrsReloadHandler
+public:
+	virtual int on_reload_vhost_removed(std::string vhost);
+private:
+	// when valid and connected to vhost/app, service the client.
+	virtual int service_cycle();
+	// stream(play/publish) service cycle, identify client first.
+	virtual int stream_service_cycle();
+	virtual int check_vhost();
+	virtual int playing(SrsSource* source);
+	virtual int publish(SrsSource* source, bool is_fmle);
+	virtual int process_publish_message(SrsSource* source, SrsCommonMessage* msg, bool is_fmle);
+	virtual int get_peer_ip();
+	virtual int process_play_control_msg(SrsConsumer* consumer, SrsCommonMessage* msg);
+private:
+	virtual int on_connect();
+	virtual void on_close();
+	virtual int on_publish();
+	virtual void on_unpublish();
+	virtual int on_play();
+	virtual void on_stop();
+};
+
+#endif

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013-2014 winlin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#include <srs_core_error.hpp>
-
-bool srs_is_system_control_error(int error_code)
-{
-	return error_code == ERROR_CONTROL_RTMP_CLOSE;
-}
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <srs_core_error.hpp>
+
+bool srs_is_system_control_error(int error_code)
+{
+	return error_code == ERROR_CONTROL_RTMP_CLOSE;
+}
+

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013-2014 winlin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#ifndef SRS_CORE_ERROR_HPP
-#define SRS_CORE_ERROR_HPP
-
-/*
-#include <srs_core_error.hpp>
-*/
-
-#include <srs_core.hpp>
-
-#define ERROR_SUCCESS 					0
-
-#define ERROR_ST_SET_EPOLL 				100
-#define ERROR_ST_INITIALIZE 			101
-#define ERROR_ST_OPEN_SOCKET			102
-#define ERROR_ST_CREATE_LISTEN_THREAD	103
-#define ERROR_ST_CREATE_CYCLE_THREAD	104
-#define ERROR_ST_CONNECT				105
-
-#define ERROR_SOCKET_CREATE 			200
-#define ERROR_SOCKET_SETREUSE 			201
-#define ERROR_SOCKET_BIND 				202
-#define ERROR_SOCKET_LISTEN 			203
-#define ERROR_SOCKET_CLOSED 			204
-#define ERROR_SOCKET_GET_PEER_NAME		205
-#define ERROR_SOCKET_GET_PEER_IP		206
-#define ERROR_SOCKET_READ				207
-#define ERROR_SOCKET_READ_FULLY			208
-#define ERROR_SOCKET_WRITE				209
-#define ERROR_SOCKET_WAIT				210
-#define ERROR_SOCKET_TIMEOUT			211
-#define ERROR_SOCKET_GET_LOCAL_IP       212
-
-#define ERROR_RTMP_PLAIN_REQUIRED		300
-#define ERROR_RTMP_CHUNK_START			301
-#define ERROR_RTMP_MSG_INVLIAD_SIZE		302
-#define ERROR_RTMP_AMF0_DECODE			303
-#define ERROR_RTMP_AMF0_INVALID			304
-#define ERROR_RTMP_REQ_CONNECT			305
-#define ERROR_RTMP_REQ_TCURL			306
-#define ERROR_RTMP_MESSAGE_DECODE		307
-#define ERROR_RTMP_MESSAGE_ENCODE		308
-#define ERROR_RTMP_AMF0_ENCODE			309
-#define ERROR_RTMP_CHUNK_SIZE			310
-#define ERROR_RTMP_TRY_SIMPLE_HS		311
-#define ERROR_RTMP_CH_SCHEMA			312
-#define ERROR_RTMP_PACKET_SIZE			313
-#define ERROR_RTMP_VHOST_NOT_FOUND		314
-#define ERROR_RTMP_ACCESS_DENIED		315
-#define ERROR_RTMP_HANDSHAKE			316
-#define ERROR_RTMP_NO_REQUEST			317
-
-#define ERROR_SYSTEM_STREAM_INIT		400
-#define ERROR_SYSTEM_PACKET_INVALID		401
-#define ERROR_SYSTEM_CLIENT_INVALID		402
-#define ERROR_SYSTEM_ASSERT_FAILED		403
-#define ERROR_SYSTEM_SIZE_NEGATIVE		404
-#define ERROR_SYSTEM_CONFIG_INVALID		405
-#define ERROR_SYSTEM_CONFIG_DIRECTIVE	406
-#define ERROR_SYSTEM_CONFIG_BLOCK_START	407
-#define ERROR_SYSTEM_CONFIG_BLOCK_END	408
-#define ERROR_SYSTEM_CONFIG_EOF			409
-#define ERROR_SYSTEM_STREAM_BUSY		410
-#define ERROR_SYSTEM_IP_INVALID			411
-#define ERROR_SYSTEM_FORWARD_LOOP		412
-#define ERROR_SYSTEM_WAITPID			413
-#define ERROR_SYSTEM_BANDWIDTH_KEY		414
-#define ERROR_SYSTEM_BANDWIDTH_DENIED	415
-
-// see librtmp.
-// failed when open ssl create the dh
-#define ERROR_OpenSslCreateDH			500
-// failed when open ssl create the Private key.
-#define ERROR_OpenSslCreateP			501
-// when open ssl create G.
-#define ERROR_OpenSslCreateG			502
-// when open ssl parse P1024
-#define ERROR_OpenSslParseP1024			503
-// when open ssl set G
-#define ERROR_OpenSslSetG				504
-// when open ssl generate DHKeys
-#define ERROR_OpenSslGenerateDHKeys		505
-// when open ssl share key already computed.
-#define ERROR_OpenSslShareKeyComputed	506
-// when open ssl get shared key size.
-#define ERROR_OpenSslGetSharedKeySize	507
-// when open ssl get peer public key.
-#define ERROR_OpenSslGetPeerPublicKey	508
-// when open ssl compute shared key.
-#define ERROR_OpenSslComputeSharedKey	509
-// when open ssl is invalid DH state.
-#define ERROR_OpenSslInvalidDHState		510
-// when open ssl copy key
-#define ERROR_OpenSslCopyKey			511
-// when open ssl sha256 digest key invalid size.
-#define ERROR_OpenSslSha256DigestSize	512
-
-#define ERROR_HLS_METADATA				600
-#define ERROR_HLS_DECODE_ERROR			601
-#define ERROR_HLS_CREATE_DIR			602
-#define ERROR_HLS_OPEN_FAILED			603
-#define ERROR_HLS_WRITE_FAILED			604
-#define ERROR_HLS_AAC_FRAME_LENGTH		605
-#define ERROR_HLS_AVC_SAMPLE_SIZE		606
-
-#define ERROR_ENCODER_VCODEC			700
-#define ERROR_ENCODER_OUTPUT			701
-#define ERROR_ENCODER_ACHANNELS			702
-#define ERROR_ENCODER_ASAMPLE_RATE		703
-#define ERROR_ENCODER_ABITRATE			704
-#define ERROR_ENCODER_ACODEC			705
-#define ERROR_ENCODER_VPRESET			706
-#define ERROR_ENCODER_VPROFILE			707
-#define ERROR_ENCODER_VTHREADS			708
-#define ERROR_ENCODER_VHEIGHT			709
-#define ERROR_ENCODER_VWIDTH			710
-#define ERROR_ENCODER_VFPS				711
-#define ERROR_ENCODER_VBITRATE			712
-#define ERROR_ENCODER_FORK				713
-#define ERROR_ENCODER_LOOP				714
-#define ERROR_ENCODER_OPEN				715
-#define ERROR_ENCODER_DUP2				716
-
-#define ERROR_HTTP_PARSE_URI			800
-#define ERROR_HTTP_DATA_INVLIAD			801
-#define ERROR_HTTP_PARSE_HEADER			802
-
-// system control message, 
-// not an error, but special control logic.
-// sys ctl: rtmp close stream, support replay.
-#define ERROR_CONTROL_RTMP_CLOSE		900
-
-/**
-* whether the error code is an system control error.
-*/
-extern bool srs_is_system_control_error(int error_code);
-
-#endif
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef SRS_CORE_ERROR_HPP
+#define SRS_CORE_ERROR_HPP
+
+/*
+#include <srs_core_error.hpp>
+*/
+
+#include <srs_core.hpp>
+
+#define ERROR_SUCCESS 					0
+
+#define ERROR_ST_SET_EPOLL 				100
+#define ERROR_ST_INITIALIZE 			101
+#define ERROR_ST_OPEN_SOCKET			102
+#define ERROR_ST_CREATE_LISTEN_THREAD	103
+#define ERROR_ST_CREATE_CYCLE_THREAD	104
+#define ERROR_ST_CONNECT				105
+
+#define ERROR_SOCKET_CREATE 			200
+#define ERROR_SOCKET_SETREUSE 			201
+#define ERROR_SOCKET_BIND 				202
+#define ERROR_SOCKET_LISTEN 			203
+#define ERROR_SOCKET_CLOSED 			204
+#define ERROR_SOCKET_GET_PEER_NAME		205
+#define ERROR_SOCKET_GET_PEER_IP		206
+#define ERROR_SOCKET_READ				207
+#define ERROR_SOCKET_READ_FULLY			208
+#define ERROR_SOCKET_WRITE				209
+#define ERROR_SOCKET_WAIT				210
+#define ERROR_SOCKET_TIMEOUT			211
+#define ERROR_SOCKET_GET_LOCAL_IP       212
+
+#define ERROR_RTMP_PLAIN_REQUIRED		300
+#define ERROR_RTMP_CHUNK_START			301
+#define ERROR_RTMP_MSG_INVLIAD_SIZE		302
+#define ERROR_RTMP_AMF0_DECODE			303
+#define ERROR_RTMP_AMF0_INVALID			304
+#define ERROR_RTMP_REQ_CONNECT			305
+#define ERROR_RTMP_REQ_TCURL			306
+#define ERROR_RTMP_MESSAGE_DECODE		307
+#define ERROR_RTMP_MESSAGE_ENCODE		308
+#define ERROR_RTMP_AMF0_ENCODE			309
+#define ERROR_RTMP_CHUNK_SIZE			310
+#define ERROR_RTMP_TRY_SIMPLE_HS		311
+#define ERROR_RTMP_CH_SCHEMA			312
+#define ERROR_RTMP_PACKET_SIZE			313
+#define ERROR_RTMP_VHOST_NOT_FOUND		314
+#define ERROR_RTMP_ACCESS_DENIED		315
+#define ERROR_RTMP_HANDSHAKE			316
+#define ERROR_RTMP_NO_REQUEST			317
+
+#define ERROR_SYSTEM_STREAM_INIT		400
+#define ERROR_SYSTEM_PACKET_INVALID		401
+#define ERROR_SYSTEM_CLIENT_INVALID		402
+#define ERROR_SYSTEM_ASSERT_FAILED		403
+#define ERROR_SYSTEM_SIZE_NEGATIVE		404
+#define ERROR_SYSTEM_CONFIG_INVALID		405
+#define ERROR_SYSTEM_CONFIG_DIRECTIVE	406
+#define ERROR_SYSTEM_CONFIG_BLOCK_START	407
+#define ERROR_SYSTEM_CONFIG_BLOCK_END	408
+#define ERROR_SYSTEM_CONFIG_EOF			409
+#define ERROR_SYSTEM_STREAM_BUSY		410
+#define ERROR_SYSTEM_IP_INVALID			411
+#define ERROR_SYSTEM_FORWARD_LOOP		412
+#define ERROR_SYSTEM_WAITPID			413
+#define ERROR_SYSTEM_BANDWIDTH_KEY		414
+#define ERROR_SYSTEM_BANDWIDTH_DENIED	415
+
+// see librtmp.
+// failed when open ssl create the dh
+#define ERROR_OpenSslCreateDH			500
+// failed when open ssl create the Private key.
+#define ERROR_OpenSslCreateP			501
+// when open ssl create G.
+#define ERROR_OpenSslCreateG			502
+// when open ssl parse P1024
+#define ERROR_OpenSslParseP1024			503
+// when open ssl set G
+#define ERROR_OpenSslSetG				504
+// when open ssl generate DHKeys
+#define ERROR_OpenSslGenerateDHKeys		505
+// when open ssl share key already computed.
+#define ERROR_OpenSslShareKeyComputed	506
+// when open ssl get shared key size.
+#define ERROR_OpenSslGetSharedKeySize	507
+// when open ssl get peer public key.
+#define ERROR_OpenSslGetPeerPublicKey	508
+// when open ssl compute shared key.
+#define ERROR_OpenSslComputeSharedKey	509
+// when open ssl is invalid DH state.
+#define ERROR_OpenSslInvalidDHState		510
+// when open ssl copy key
+#define ERROR_OpenSslCopyKey			511
+// when open ssl sha256 digest key invalid size.
+#define ERROR_OpenSslSha256DigestSize	512
+
+#define ERROR_HLS_METADATA				600
+#define ERROR_HLS_DECODE_ERROR			601
+#define ERROR_HLS_CREATE_DIR			602
+#define ERROR_HLS_OPEN_FAILED			603
+#define ERROR_HLS_WRITE_FAILED			604
+#define ERROR_HLS_AAC_FRAME_LENGTH		605
+#define ERROR_HLS_AVC_SAMPLE_SIZE		606
+
+#define ERROR_ENCODER_VCODEC			700
+#define ERROR_ENCODER_OUTPUT			701
+#define ERROR_ENCODER_ACHANNELS			702
+#define ERROR_ENCODER_ASAMPLE_RATE		703
+#define ERROR_ENCODER_ABITRATE			704
+#define ERROR_ENCODER_ACODEC			705
+#define ERROR_ENCODER_VPRESET			706
+#define ERROR_ENCODER_VPROFILE			707
+#define ERROR_ENCODER_VTHREADS			708
+#define ERROR_ENCODER_VHEIGHT			709
+#define ERROR_ENCODER_VWIDTH			710
+#define ERROR_ENCODER_VFPS				711
+#define ERROR_ENCODER_VBITRATE			712
+#define ERROR_ENCODER_FORK				713
+#define ERROR_ENCODER_LOOP				714
+#define ERROR_ENCODER_OPEN				715
+#define ERROR_ENCODER_DUP2				716
+
+#define ERROR_HTTP_PARSE_URI			800
+#define ERROR_HTTP_DATA_INVLIAD			801
+#define ERROR_HTTP_PARSE_HEADER			802
+
+// system control message, 
+// not an error, but special control logic.
+// sys ctl: rtmp close stream, support replay.
+#define ERROR_CONTROL_RTMP_CLOSE		900
+
+/**
+* whether the error code is an system control error.
+*/
+extern bool srs_is_system_control_error(int error_code);
+
+#endif

@@ -3365,4 +3365,3 @@ int SrsUserControlPacket::encode_packet(SrsStream* stream)
 	
 	
 	return ret;
 	return ret;
 }
 }
-

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013-2014 winlin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-
-#ifndef SRS_CORE_PROTOCOL_HPP
-#define SRS_CORE_PROTOCOL_HPP
-
-/*
-#include <srs_core_protocol.hpp>
-*/
-
-#include <srs_core.hpp>
-
-#include <map>
-#include <string>
-
-#include <srs_core_log.hpp>
-#include <srs_core_error.hpp>
-
-// the following is the timeout for rtmp protocol, 
-// to avoid death connection.
-
-// when got a messae header, there must be some data,
-// increase recv timeout to got an entire message.
-#define SRS_MIN_RECV_TIMEOUT_US 60*1000*1000L
-
-// the timeout to wait for client control message,
-// if timeout, we generally ignore and send the data to client,
-// generally, it's the pulse time for data seding.
-#define SRS_PULSE_TIMEOUT_US 200*1000L
-
-// the timeout to wait client data,
-// if timeout, close the connection.
-#define SRS_SEND_TIMEOUT_US 30*1000*1000L
-
-// the timeout to send data to client,
-// if timeout, close the connection.
-#define SRS_RECV_TIMEOUT_US 30*1000*1000L
-
-// the timeout to wait client data, when client paused
-// if timeout, close the connection.
-#define SRS_PAUSED_SEND_TIMEOUT_US 30*60*1000*1000L
-
-// the timeout to send data to client, when client paused
-// if timeout, close the connection.
-#define SRS_PAUSED_RECV_TIMEOUT_US 30*60*1000*1000L
-
-// when stream is busy, for example, streaming is already
-// publishing, when a new client to request to publish,
-// sleep a while and close the connection.
-#define SRS_STREAM_BUSY_SLEEP_US 3*1000*1000L
-
-// when error, forwarder sleep for a while and retry.
-#define SRS_FORWARDER_SLEEP_US 3*1000*1000L
-
-// when error, encoder sleep for a while and retry.
-#define SRS_ENCODER_SLEEP_US 3*1000*1000L
-
-class SrsSocket;
-class SrsBuffer;
-class SrsPacket;
-class SrsStream;
-class SrsCommonMessage;
-class SrsChunkStream;
-class SrsAmf0Object;
-class SrsAmf0Null;
-class SrsAmf0Undefined;
-class ISrsMessage;
-
-// convert class name to string.
-#define CLASS_NAME_STRING(className) #className
-
-/**
-* max rtmp header size:
-* 	1bytes basic header,
-* 	11bytes message header,
-* 	4bytes timestamp header,
-* that is, 1+11+4=16bytes.
-*/
-#define RTMP_MAX_FMT0_HEADER_SIZE 16
-/**
-* max rtmp header size:
-* 	1bytes basic header,
-* 	4bytes timestamp header,
-* that is, 1+4=5bytes.
-*/
-#define RTMP_MAX_FMT3_HEADER_SIZE 5
-
-/**
-* the protocol provides the rtmp-message-protocol services,
-* to recv RTMP message from RTMP chunk stream,
-* and to send out RTMP message over RTMP chunk stream.
-*/
-class SrsProtocol
-{
-private:
-	struct AckWindowSize
-	{
-		int ack_window_size;
-		int64_t acked_size;
-		
-		AckWindowSize();
-	};
-// peer in/out
-private:
-	st_netfd_t stfd;
-	SrsSocket* skt;
-	char* pp;
-	/**
-	* requests sent out, used to build the response.
-	* key: transactionId
-	* value: the request command name
-	*/
-	std::map<double, std::string> requests;
-// peer in
-private:
-	std::map<int, SrsChunkStream*> chunk_streams;
-	SrsBuffer* buffer;
-	int32_t in_chunk_size;
-	AckWindowSize in_ack_size;
-// peer out
-private:
-	char out_header_fmt0[RTMP_MAX_FMT0_HEADER_SIZE];
-	char out_header_fmt3[RTMP_MAX_FMT3_HEADER_SIZE];
-	int32_t out_chunk_size;
-public:
-	SrsProtocol(st_netfd_t client_stfd);
-	virtual ~SrsProtocol();
-public:
-	std::string get_request_name(double transcationId);
-	/**
-	* set the timeout in us.
-	* if timeout, recv/send message return ERROR_SOCKET_TIMEOUT.
-	*/
-	virtual void set_recv_timeout(int64_t timeout_us);
-	virtual int64_t get_recv_timeout();
-	virtual void set_send_timeout(int64_t timeout_us);
-	virtual int64_t get_send_timeout();
-	virtual int64_t get_recv_bytes();
-	virtual int64_t get_send_bytes();
-	virtual int get_recv_kbps();
-	virtual int get_send_kbps();
-	/**
-	* recv a message with raw/undecoded payload from peer.
-	* the payload is not decoded, use srs_rtmp_expect_message<T> if requires 
-	* specifies message.
-	* @pmsg, user must free it. NULL if not success.
-	* @remark, only when success, user can use and must free the pmsg.
-	*/
-	virtual int recv_message(SrsCommonMessage** pmsg);
-	/**
-	* send out message with encoded payload to peer.
-	* use the message encode method to encode to payload,
-	* then sendout over socket.
-	* @msg this method will free it whatever return value.
-	*/
-	virtual int send_message(ISrsMessage* msg);
-private:
-	/**
-	* when recv message, update the context.
-	*/
-	virtual int on_recv_message(SrsCommonMessage* msg);
-	virtual int response_acknowledgement_message();
-	virtual int response_ping_message(int32_t timestamp);
-	/**
-	* when message sentout, update the context.
-	*/
-	virtual int on_send_message(ISrsMessage* msg);
-	/**
-	* try to recv interlaced message from peer,
-	* return error if error occur and nerver set the pmsg,
-	* return success and pmsg set to NULL if no entire message got,
-	* return success and pmsg set to entire message if got one.
-	*/
-	virtual int recv_interlaced_message(SrsCommonMessage** pmsg);
-	/**
-	* read the chunk basic header(fmt, cid) from chunk stream.
-	* user can discovery a SrsChunkStream by cid.
-	* @bh_size return the chunk basic header size, to remove the used bytes when finished.
-	*/
-	virtual int read_basic_header(char& fmt, int& cid, int& bh_size);
-	/**
-	* read the chunk message header(timestamp, payload_length, message_type, stream_id) 
-	* from chunk stream and save to SrsChunkStream.
-	* @mh_size return the chunk message header size, to remove the used bytes when finished.
-	*/
-	virtual int read_message_header(SrsChunkStream* chunk, char fmt, int bh_size, int& mh_size);
-	/**
-	* read the chunk payload, remove the used bytes in buffer,
-	* if got entire message, set the pmsg.
-	* @payload_size read size in this roundtrip, generally a chunk size or left message size.
-	*/
-	virtual int read_message_payload(SrsChunkStream* chunk, int bh_size, int mh_size, int& payload_size, SrsCommonMessage** pmsg);
-};
-
-/**
-* 4.1. Message Header
-*/
-struct SrsMessageHeader
-{
-	/**
-	* One byte field to represent the message type. A range of type IDs
-	* (1-7) are reserved for protocol control messages.
-	*/
-	int8_t message_type;
-	/**
-	* Three-byte field that represents the size of the payload in bytes.
-	* It is set in big-endian format.
-	*/
-	int32_t payload_length;
-	/**
-	* Three-byte field that contains a timestamp delta of the message.
-	* The 4 bytes are packed in the big-endian order.
-	* @remark, only used for decoding message from chunk stream.
-	*/
-	int32_t timestamp_delta;
-	/**
-	* Three-byte field that identifies the stream of the message. These
-	* bytes are set in big-endian format.
-	*/
-	int32_t stream_id;
-	
-	/**
-	* Four-byte field that contains a timestamp of the message.
-	* The 4 bytes are packed in the big-endian order.
-	* @remark, used as calc timestamp when decode and encode time.
-	* @remark, we use 64bits for large time for jitter detect and hls.
-	*/
-	int64_t timestamp;
-	
-	SrsMessageHeader();
-	virtual ~SrsMessageHeader();
-
-	bool is_audio();
-	bool is_video();
-	bool is_amf0_command();
-	bool is_amf0_data();
-	bool is_amf3_command();
-	bool is_amf3_data();
-	bool is_window_ackledgement_size();
-	bool is_set_chunk_size();
-	bool is_user_control_message();
-};
-
-/**
-* incoming chunk stream maybe interlaced,
-* use the chunk stream to cache the input RTMP chunk streams.
-*/
-class SrsChunkStream
-{
-public:
-	/**
-	* represents the basic header fmt,
-	* which used to identify the variant message header type.
-	*/
-	char fmt;
-	/**
-	* represents the basic header cid,
-	* which is the chunk stream id.
-	*/
-	int cid;
-	/**
-	* cached message header
-	*/
-	SrsMessageHeader header;
-	/**
-	* whether the chunk message header has extended timestamp.
-	*/
-	bool extended_timestamp;
-	/**
-	* partially read message.
-	*/
-	SrsCommonMessage* msg;
-	/**
-	* decoded msg count, to identify whether the chunk stream is fresh.
-	*/
-	int64_t msg_count;
-public:
-	SrsChunkStream(int _cid);
-	virtual ~SrsChunkStream();
-};
-
-/**
-* message to output.
-*/
-class ISrsMessage
-{
-// 4.1. Message Header
-public:
-	SrsMessageHeader header;
-// 4.2. Message Payload
-public:
-	/**
-	* The other part which is the payload is the actual data that is
-	* contained in the message. For example, it could be some audio samples
-	* or compressed video data. The payload format and interpretation are
-	* beyond the scope of this document.
-	*/
-	int32_t size;
-	int8_t* payload;
-public:
-	ISrsMessage();
-	virtual ~ISrsMessage();
-public:
-	/**
-	* whether message canbe decoded.
-	* only update the context when message canbe decoded.
-	*/
-	virtual bool can_decode() = 0;
-/**
-* encode functions.
-*/
-public:
-	/**
-	* get the perfered cid(chunk stream id) which sendout over.
-	*/
-	virtual int get_perfer_cid() = 0;
-	/**
-	* encode the packet to message payload bytes.
-	* @remark there exists empty packet, so maybe the payload is NULL.
-	*/
-	virtual int encode_packet() = 0;
-};
-
-/**
-* common RTMP message defines in rtmp.part2.Message-Formats.pdf.
-* cannbe parse and decode.
-*/
-class SrsCommonMessage : public ISrsMessage
-{
-private:
-	typedef ISrsMessage super;
-	disable_default_copy(SrsCommonMessage);
-// decoded message payload.
-private:
-	SrsStream* stream;
-	SrsPacket* packet;
-public:
-	SrsCommonMessage();
-	virtual ~SrsCommonMessage();
-public:
-	virtual bool can_decode();
-/**
-* decode functions.
-*/
-public:
-	/**
-	* decode packet from message payload.
-	*/
-	// TODO: use protocol to decode it.
-	virtual int decode_packet(SrsProtocol* protocol);
-	/**
-	* get the decoded packet which decoded by decode_packet().
-	* @remark, user never free the pkt, the message will auto free it.
-	*/
-	virtual SrsPacket* get_packet();
-/**
-* encode functions.
-*/
-public:
-	/**
-	* get the perfered cid(chunk stream id) which sendout over.
-	*/
-	virtual int get_perfer_cid();
-	/**
-	* set the encoded packet to encode_packet() to payload.
-	* @stream_id, the id of stream which is created by createStream.
-	* @remark, user never free the pkt, the message will auto free it.
-	* @return message itself.
-	*/
-	// TODO: refine the send methods.
-	virtual SrsCommonMessage* set_packet(SrsPacket* pkt, int stream_id);
-	/**
-	* encode the packet to message payload bytes.
-	* @remark there exists empty packet, so maybe the payload is NULL.
-	*/
-	virtual int encode_packet();
-};
-
-/**
-* shared ptr message.
-* for audio/video/data message that need less memory copy.
-* and only for output.
-*/
-class SrsSharedPtrMessage : public ISrsMessage
-{
-private:
-	typedef ISrsMessage super;
-private:
-	struct SrsSharedPtr
-	{
-		char* payload;
-		int size;
-		int perfer_cid;
-		int shared_count;
-		
-		SrsSharedPtr();
-		virtual ~SrsSharedPtr();
-	};
-	SrsSharedPtr* ptr;
-public:
-	SrsSharedPtrMessage();
-	virtual ~SrsSharedPtrMessage();
-public:
-	virtual bool can_decode();
-public:
-	/**
-	* set the shared payload.
-	* we will detach the payload of source,
-	* so ensure donot use it before.
-	*/
-	virtual int initialize(SrsCommonMessage* source);
-	/**
-	* set the shared payload.
-	* we will use the payload, donot use the payload of source.
-	*/
-	virtual int initialize(SrsCommonMessage* source, char* payload, int size);
-	virtual SrsSharedPtrMessage* copy();
-public:
-	/**
-	* get the perfered cid(chunk stream id) which sendout over.
-	*/
-	virtual int get_perfer_cid();
-	/**
-	* ignored.
-	* for shared message, nothing should be done.
-	* use initialize() to set the data.
-	*/
-	virtual int encode_packet();
-};
-
-/**
-* the decoded message payload.
-* @remark we seperate the packet from message,
-*		for the packet focus on logic and domain data,
-*		the message bind to the protocol and focus on protocol, such as header.
-* 		we can merge the message and packet, using OOAD hierachy, packet extends from message,
-* 		it's better for me to use components -- the message use the packet as payload.
-*/
-class SrsPacket
-{
-protected:
-	/**
-	* subpacket must override to provide the right class name.
-	*/
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsPacket);
-	}
-public:
-	SrsPacket();
-	virtual ~SrsPacket();
-/**
-* decode functions.
-*/
-public:
-	/**
-	* subpacket must override to decode packet from stream.
-	* @remark never invoke the super.decode, it always failed.
-	*/
-	virtual int decode(SrsStream* stream);
-/**
-* encode functions.
-*/
-public:
-	virtual int get_perfer_cid();
-	virtual int get_payload_length();
-public:
-	/**
-	* subpacket must override to provide the right message type.
-	*/
-	virtual int get_message_type();
-	/**
-	* the subpacket can override this encode,
-	* for example, video and audio will directly set the payload withou memory copy,
-	* other packet which need to serialize/encode to bytes by override the 
-	* get_size and encode_packet.
-	*/
-	virtual int encode(int& size, char*& payload);
-protected:
-	/**
-	* subpacket can override to calc the packet size.
-	*/
-	virtual int get_size();
-	/**
-	* subpacket can override to encode the payload to stream.
-	* @remark never invoke the super.encode_packet, it always failed.
-	*/
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 4.1.1. connect
-* The client sends the connect command to the server to request
-* connection to a server application instance.
-*/
-class SrsConnectAppPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsConnectAppPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Object* command_object;
-public:
-	SrsConnectAppPacket();
-	virtual ~SrsConnectAppPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-/**
-* response for SrsConnectAppPacket.
-*/
-class SrsConnectAppResPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsConnectAppResPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Object* props;
-	SrsAmf0Object* info;
-public:
-	SrsConnectAppResPacket();
-	virtual ~SrsConnectAppResPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 4.1.3. createStream
-* The client sends this command to the server to create a logical
-* channel for message communication The publishing of audio, video, and
-* metadata is carried out over stream channel created using the
-* createStream command.
-*/
-class SrsCreateStreamPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsCreateStreamPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-public:
-	SrsCreateStreamPacket();
-	virtual ~SrsCreateStreamPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-/**
-* response for SrsCreateStreamPacket.
-*/
-class SrsCreateStreamResPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsCreateStreamResPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	double stream_id;
-public:
-	SrsCreateStreamResPacket(double _transaction_id, double _stream_id);
-	virtual ~SrsCreateStreamResPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-/**
-* client close stream packet.
-*/
-class SrsCloseStreamPacket : public SrsPacket
-{
-private:
-    typedef SrsPacket super;
-protected:
-    virtual const char* get_class_name()
-    {
-        return CLASS_NAME_STRING(SrsCloseStreamPacket);
-    }
-public:
-    std::string command_name;
-    double transaction_id;
-    SrsAmf0Null* command_object;
-public:
-    SrsCloseStreamPacket();
-    virtual ~SrsCloseStreamPacket();
-public:
-    virtual int decode(SrsStream* stream);
-};
-
-/**
-* FMLE start publish: ReleaseStream/PublishStream
-*/
-class SrsFMLEStartPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsFMLEStartPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	std::string stream_name;
-public:
-	SrsFMLEStartPacket();
-	virtual ~SrsFMLEStartPacket();
-public:
-	virtual int decode(SrsStream* stream);
-};
-/**
-* response for SrsFMLEStartPacket.
-*/
-class SrsFMLEStartResPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsFMLEStartResPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	SrsAmf0Undefined* args;
-public:
-	SrsFMLEStartResPacket(double _transaction_id);
-	virtual ~SrsFMLEStartResPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* FMLE/flash publish
-* 4.2.6. Publish
-* The client sends the publish command to publish a named stream to the
-* server. Using this name, any client can play this stream and receive
-* the published audio, video, and data messages.
-*/
-class SrsPublishPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsPublishPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	std::string stream_name;
-	// optional, default to live.
-	std::string type;
-public:
-	SrsPublishPacket();
-	virtual ~SrsPublishPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 4.2.8. pause
-* The client sends the pause command to tell the server to pause or
-* start playing.
-*/
-class SrsPausePacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsPausePacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	bool is_pause;
-	double time_ms;
-public:
-	SrsPausePacket();
-	virtual ~SrsPausePacket();
-public:
-	virtual int decode(SrsStream* stream);
-};
-
-/**
-* 4.2.1. play
-* The client sends this command to the server to play a stream.
-*/
-class SrsPlayPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsPlayPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	std::string stream_name;
-	double start;
-	double duration;
-	bool reset;
-public:
-	SrsPlayPacket();
-	virtual ~SrsPlayPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-/**
-* response for SrsPlayPacket.
-* @remark, user must set the stream_id in header.
-*/
-class SrsPlayResPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsPlayResPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* command_object;
-	SrsAmf0Object* desc;
-public:
-	SrsPlayResPacket();
-	virtual ~SrsPlayResPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* when bandwidth test done, notice client.
-*/
-class SrsOnBWDonePacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsOnBWDonePacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* args;
-public:
-	SrsOnBWDonePacket();
-	virtual ~SrsOnBWDonePacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* onStatus command, AMF0 Call
-* @remark, user must set the stream_id by SrsMessage.set_packet().
-*/
-class SrsOnStatusCallPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsOnStatusCallPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* args;
-	SrsAmf0Object* data;
-public:
-	SrsOnStatusCallPacket();
-	virtual ~SrsOnStatusCallPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* the special packet for the bandwidth test.
-* actually, it's a SrsOnStatusCallPacket, but
-* 1. encode with data field, to send data to client.
-* 2. decode ignore the data field, donot care.
-*/
-class SrsBandwidthPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-	disable_default_copy(SrsBandwidthPacket);
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsBandwidthPacket);
-	}
-public:
-	std::string command_name;
-	double transaction_id;
-	SrsAmf0Null* args;
-	SrsAmf0Object* data;
-public:
-	SrsBandwidthPacket();
-	virtual ~SrsBandwidthPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-public:
-    virtual int decode(SrsStream* stream);
-public:
-	virtual bool is_starting_play();
-	virtual bool is_stopped_play();
-	virtual bool is_starting_publish();
-	virtual bool is_stopped_publish();
-	virtual bool is_flash_final();
-	static SrsBandwidthPacket* create_finish();
-	static SrsBandwidthPacket* create_start_play();
-	static SrsBandwidthPacket* create_playing();
-	static SrsBandwidthPacket* create_stop_play();
-	static SrsBandwidthPacket* create_start_publish();
-	static SrsBandwidthPacket* create_stop_publish();
-private:
-	virtual SrsBandwidthPacket* set_command(std::string command);
-};
-
-/**
-* onStatus data, AMF0 Data
-* @remark, user must set the stream_id by SrsMessage.set_packet().
-*/
-class SrsOnStatusDataPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsOnStatusDataPacket);
-	}
-public:
-	std::string command_name;
-	SrsAmf0Object* data;
-public:
-	SrsOnStatusDataPacket();
-	virtual ~SrsOnStatusDataPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* AMF0Data RtmpSampleAccess
-* @remark, user must set the stream_id by SrsMessage.set_packet().
-*/
-class SrsSampleAccessPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsSampleAccessPacket);
-	}
-public:
-	std::string command_name;
-	bool video_sample_access;
-	bool audio_sample_access;
-public:
-	SrsSampleAccessPacket();
-	virtual ~SrsSampleAccessPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* the stream metadata.
-* FMLE: @setDataFrame
-* others: onMetaData
-*/
-class SrsOnMetaDataPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsOnMetaDataPacket);
-	}
-public:
-	std::string name;
-	SrsAmf0Object* metadata;
-public:
-	SrsOnMetaDataPacket();
-	virtual ~SrsOnMetaDataPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 5.5. Window Acknowledgement Size (5)
-* The client or the server sends this message to inform the peer which
-* window size to use when sending acknowledgment.
-*/
-class SrsSetWindowAckSizePacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsSetWindowAckSizePacket);
-	}
-public:
-	int32_t ackowledgement_window_size;
-public:
-	SrsSetWindowAckSizePacket();
-	virtual ~SrsSetWindowAckSizePacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 5.3. Acknowledgement (3)
-* The client or the server sends the acknowledgment to the peer after
-* receiving bytes equal to the window size.
-*/
-class SrsAcknowledgementPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsAcknowledgementPacket);
-	}
-public:
-	int32_t sequence_number;
-public:
-	SrsAcknowledgementPacket();
-	virtual ~SrsAcknowledgementPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 7.1. Set Chunk Size
-* Protocol control message 1, Set Chunk Size, is used to notify the
-* peer about the new maximum chunk size.
-*/
-class SrsSetChunkSizePacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsSetChunkSizePacket);
-	}
-public:
-	int32_t chunk_size;
-public:
-	SrsSetChunkSizePacket();
-	virtual ~SrsSetChunkSizePacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* 5.6. Set Peer Bandwidth (6)
-* The client or the server sends this message to update the output
-* bandwidth of the peer.
-*/
-class SrsSetPeerBandwidthPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsSetPeerBandwidthPacket);
-	}
-public:
-	int32_t bandwidth;
-	int8_t type;
-public:
-	SrsSetPeerBandwidthPacket();
-	virtual ~SrsSetPeerBandwidthPacket();
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-// 3.7. User Control message
-enum SrcPCUCEventType
-{
-	 // generally, 4bytes event-data
-	SrcPCUCStreamBegin 			= 0x00,
-	SrcPCUCStreamEOF 			= 0x01,
-	SrcPCUCStreamDry 			= 0x02,
-	SrcPCUCSetBufferLength 		= 0x03, // 8bytes event-data
-	SrcPCUCStreamIsRecorded 	= 0x04,
-	SrcPCUCPingRequest 			= 0x06,
-	SrcPCUCPingResponse 		= 0x07,
-};
-
-/**
-* for the EventData is 4bytes.
-* Stream Begin(=0)			4-bytes stream ID
-* Stream EOF(=1)			4-bytes stream ID
-* StreamDry(=2)				4-bytes stream ID
-* SetBufferLength(=3)		8-bytes 4bytes stream ID, 4bytes buffer length.
-* StreamIsRecorded(=4)		4-bytes stream ID
-* PingRequest(=6)			4-bytes timestamp local server time
-* PingResponse(=7)			4-bytes timestamp received ping request.
-* 
-* 3.7. User Control message
-* +------------------------------+-------------------------
-* | Event Type ( 2- bytes ) | Event Data
-* +------------------------------+-------------------------
-* Figure 5 Pay load for the ‘User Control Message’.
-*/
-class SrsUserControlPacket : public SrsPacket
-{
-private:
-	typedef SrsPacket super;
-protected:
-	virtual const char* get_class_name()
-	{
-		return CLASS_NAME_STRING(SrsUserControlPacket);
-	}
-public:
-	// @see: SrcPCUCEventType
-	int16_t event_type;
-	int32_t event_data;
-	/**
-	* 4bytes if event_type is SetBufferLength; otherwise 0.
-	*/
-	int32_t extra_data;
-public:
-	SrsUserControlPacket();
-	virtual ~SrsUserControlPacket();
-public:
-	virtual int decode(SrsStream* stream);
-public:
-	virtual int get_perfer_cid();
-public:
-	virtual int get_message_type();
-protected:
-	virtual int get_size();
-	virtual int encode_packet(SrsStream* stream);
-};
-
-/**
-* expect a specified message, drop others util got specified one.
-* @pmsg, user must free it. NULL if not success.
-* @ppacket, store in the pmsg, user must never free it. NULL if not success.
-* @remark, only when success, user can use and must free the pmsg/ppacket.
-*/
-template<class T>
-int srs_rtmp_expect_message(SrsProtocol* protocol, SrsCommonMessage** pmsg, T** ppacket)
-{
-	*pmsg = NULL;
-	*ppacket = NULL;
-	
-	int ret = ERROR_SUCCESS;
-	
-	while (true) {
-		SrsCommonMessage* msg = NULL;
-		if ((ret = protocol->recv_message(&msg)) != ERROR_SUCCESS) {
-			srs_error("recv message failed. ret=%d", ret);
-			return ret;
-		}
-		srs_verbose("recv message success.");
-		
-		if ((ret = msg->decode_packet(protocol)) != ERROR_SUCCESS) {
-			delete msg;
-			srs_error("decode message failed. ret=%d", ret);
-			return ret;
-		}
-		
-		T* pkt = dynamic_cast<T*>(msg->get_packet());
-		if (!pkt) {
-			delete msg;
-			srs_trace("drop message(type=%d, size=%d, time=%"PRId64", sid=%d).", 
-				msg->header.message_type, msg->header.payload_length,
-				msg->header.timestamp, msg->header.stream_id);
-			continue;
-		}
-		
-		*pmsg = msg;
-		*ppacket = pkt;
-		break;
-	}
-	
-	return ret;
-}
-
-#endif
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013-2014 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef SRS_CORE_PROTOCOL_HPP
+#define SRS_CORE_PROTOCOL_HPP
+
+/*
+#include <srs_core_protocol.hpp>
+*/
+
+#include <srs_core.hpp>
+
+#include <map>
+#include <string>
+
+#include <srs_core_log.hpp>
+#include <srs_core_error.hpp>
+
+// the following is the timeout for rtmp protocol, 
+// to avoid death connection.
+
+// when got a messae header, there must be some data,
+// increase recv timeout to got an entire message.
+#define SRS_MIN_RECV_TIMEOUT_US 60*1000*1000L
+
+// the timeout to wait for client control message,
+// if timeout, we generally ignore and send the data to client,
+// generally, it's the pulse time for data seding.
+#define SRS_PULSE_TIMEOUT_US 200*1000L
+
+// the timeout to wait client data,
+// if timeout, close the connection.
+#define SRS_SEND_TIMEOUT_US 30*1000*1000L
+
+// the timeout to send data to client,
+// if timeout, close the connection.
+#define SRS_RECV_TIMEOUT_US 30*1000*1000L
+
+// the timeout to wait client data, when client paused
+// if timeout, close the connection.
+#define SRS_PAUSED_SEND_TIMEOUT_US 30*60*1000*1000L
+
+// the timeout to send data to client, when client paused
+// if timeout, close the connection.
+#define SRS_PAUSED_RECV_TIMEOUT_US 30*60*1000*1000L
+
+// when stream is busy, for example, streaming is already
+// publishing, when a new client to request to publish,
+// sleep a while and close the connection.
+#define SRS_STREAM_BUSY_SLEEP_US 3*1000*1000L
+
+// when error, forwarder sleep for a while and retry.
+#define SRS_FORWARDER_SLEEP_US 3*1000*1000L
+
+// when error, encoder sleep for a while and retry.
+#define SRS_ENCODER_SLEEP_US 3*1000*1000L
+
+class SrsSocket;
+class SrsBuffer;
+class SrsPacket;
+class SrsStream;
+class SrsCommonMessage;
+class SrsChunkStream;
+class SrsAmf0Object;
+class SrsAmf0Null;
+class SrsAmf0Undefined;
+class ISrsMessage;
+
+// convert class name to string.
+#define CLASS_NAME_STRING(className) #className
+
+/**
+* max rtmp header size:
+* 	1bytes basic header,
+* 	11bytes message header,
+* 	4bytes timestamp header,
+* that is, 1+11+4=16bytes.
+*/
+#define RTMP_MAX_FMT0_HEADER_SIZE 16
+/**
+* max rtmp header size:
+* 	1bytes basic header,
+* 	4bytes timestamp header,
+* that is, 1+4=5bytes.
+*/
+#define RTMP_MAX_FMT3_HEADER_SIZE 5
+
+/**
+* the protocol provides the rtmp-message-protocol services,
+* to recv RTMP message from RTMP chunk stream,
+* and to send out RTMP message over RTMP chunk stream.
+*/
+class SrsProtocol
+{
+private:
+	struct AckWindowSize
+	{
+		int ack_window_size;
+		int64_t acked_size;
+		
+		AckWindowSize();
+	};
+// peer in/out
+private:
+	st_netfd_t stfd;
+	SrsSocket* skt;
+	char* pp;
+	/**
+	* requests sent out, used to build the response.
+	* key: transactionId
+	* value: the request command name
+	*/
+	std::map<double, std::string> requests;
+// peer in
+private:
+	std::map<int, SrsChunkStream*> chunk_streams;
+	SrsBuffer* buffer;
+	int32_t in_chunk_size;
+	AckWindowSize in_ack_size;
+// peer out
+private:
+	char out_header_fmt0[RTMP_MAX_FMT0_HEADER_SIZE];
+	char out_header_fmt3[RTMP_MAX_FMT3_HEADER_SIZE];
+	int32_t out_chunk_size;
+public:
+	SrsProtocol(st_netfd_t client_stfd);
+	virtual ~SrsProtocol();
+public:
+	std::string get_request_name(double transcationId);
+	/**
+	* set the timeout in us.
+	* if timeout, recv/send message return ERROR_SOCKET_TIMEOUT.
+	*/
+	virtual void set_recv_timeout(int64_t timeout_us);
+	virtual int64_t get_recv_timeout();
+	virtual void set_send_timeout(int64_t timeout_us);
+	virtual int64_t get_send_timeout();
+	virtual int64_t get_recv_bytes();
+	virtual int64_t get_send_bytes();
+	virtual int get_recv_kbps();
+	virtual int get_send_kbps();
+	/**
+	* recv a message with raw/undecoded payload from peer.
+	* the payload is not decoded, use srs_rtmp_expect_message<T> if requires 
+	* specifies message.
+	* @pmsg, user must free it. NULL if not success.
+	* @remark, only when success, user can use and must free the pmsg.
+	*/
+	virtual int recv_message(SrsCommonMessage** pmsg);
+	/**
+	* send out message with encoded payload to peer.
+	* use the message encode method to encode to payload,
+	* then sendout over socket.
+	* @msg this method will free it whatever return value.
+	*/
+	virtual int send_message(ISrsMessage* msg);
+private:
+	/**
+	* when recv message, update the context.
+	*/
+	virtual int on_recv_message(SrsCommonMessage* msg);
+	virtual int response_acknowledgement_message();
+	virtual int response_ping_message(int32_t timestamp);
+	/**
+	* when message sentout, update the context.
+	*/
+	virtual int on_send_message(ISrsMessage* msg);
+	/**
+	* try to recv interlaced message from peer,
+	* return error if error occur and nerver set the pmsg,
+	* return success and pmsg set to NULL if no entire message got,
+	* return success and pmsg set to entire message if got one.
+	*/
+	virtual int recv_interlaced_message(SrsCommonMessage** pmsg);
+	/**
+	* read the chunk basic header(fmt, cid) from chunk stream.
+	* user can discovery a SrsChunkStream by cid.
+	* @bh_size return the chunk basic header size, to remove the used bytes when finished.
+	*/
+	virtual int read_basic_header(char& fmt, int& cid, int& bh_size);
+	/**
+	* read the chunk message header(timestamp, payload_length, message_type, stream_id) 
+	* from chunk stream and save to SrsChunkStream.
+	* @mh_size return the chunk message header size, to remove the used bytes when finished.
+	*/
+	virtual int read_message_header(SrsChunkStream* chunk, char fmt, int bh_size, int& mh_size);
+	/**
+	* read the chunk payload, remove the used bytes in buffer,
+	* if got entire message, set the pmsg.
+	* @payload_size read size in this roundtrip, generally a chunk size or left message size.
+	*/
+	virtual int read_message_payload(SrsChunkStream* chunk, int bh_size, int mh_size, int& payload_size, SrsCommonMessage** pmsg);
+};
+
+/**
+* 4.1. Message Header
+*/
+struct SrsMessageHeader
+{
+	/**
+	* One byte field to represent the message type. A range of type IDs
+	* (1-7) are reserved for protocol control messages.
+	*/
+	int8_t message_type;
+	/**
+	* Three-byte field that represents the size of the payload in bytes.
+	* It is set in big-endian format.
+	*/
+	int32_t payload_length;
+	/**
+	* Three-byte field that contains a timestamp delta of the message.
+	* The 4 bytes are packed in the big-endian order.
+	* @remark, only used for decoding message from chunk stream.
+	*/
+	int32_t timestamp_delta;
+	/**
+	* Three-byte field that identifies the stream of the message. These
+	* bytes are set in big-endian format.
+	*/
+	int32_t stream_id;
+	
+	/**
+	* Four-byte field that contains a timestamp of the message.
+	* The 4 bytes are packed in the big-endian order.
+	* @remark, used as calc timestamp when decode and encode time.
+	* @remark, we use 64bits for large time for jitter detect and hls.
+	*/
+	int64_t timestamp;
+	
+	SrsMessageHeader();
+	virtual ~SrsMessageHeader();
+
+	bool is_audio();
+	bool is_video();
+	bool is_amf0_command();
+	bool is_amf0_data();
+	bool is_amf3_command();
+	bool is_amf3_data();
+	bool is_window_ackledgement_size();
+	bool is_set_chunk_size();
+	bool is_user_control_message();
+};
+
+/**
+* incoming chunk stream maybe interlaced,
+* use the chunk stream to cache the input RTMP chunk streams.
+*/
+class SrsChunkStream
+{
+public:
+	/**
+	* represents the basic header fmt,
+	* which used to identify the variant message header type.
+	*/
+	char fmt;
+	/**
+	* represents the basic header cid,
+	* which is the chunk stream id.
+	*/
+	int cid;
+	/**
+	* cached message header
+	*/
+	SrsMessageHeader header;
+	/**
+	* whether the chunk message header has extended timestamp.
+	*/
+	bool extended_timestamp;
+	/**
+	* partially read message.
+	*/
+	SrsCommonMessage* msg;
+	/**
+	* decoded msg count, to identify whether the chunk stream is fresh.
+	*/
+	int64_t msg_count;
+public:
+	SrsChunkStream(int _cid);
+	virtual ~SrsChunkStream();
+};
+
+/**
+* message to output.
+*/
+class ISrsMessage
+{
+// 4.1. Message Header
+public:
+	SrsMessageHeader header;
+// 4.2. Message Payload
+public:
+	/**
+	* The other part which is the payload is the actual data that is
+	* contained in the message. For example, it could be some audio samples
+	* or compressed video data. The payload format and interpretation are
+	* beyond the scope of this document.
+	*/
+	int32_t size;
+	int8_t* payload;
+public:
+	ISrsMessage();
+	virtual ~ISrsMessage();
+public:
+	/**
+	* whether message canbe decoded.
+	* only update the context when message canbe decoded.
+	*/
+	virtual bool can_decode() = 0;
+/**
+* encode functions.
+*/
+public:
+	/**
+	* get the perfered cid(chunk stream id) which sendout over.
+	*/
+	virtual int get_perfer_cid() = 0;
+	/**
+	* encode the packet to message payload bytes.
+	* @remark there exists empty packet, so maybe the payload is NULL.
+	*/
+	virtual int encode_packet() = 0;
+};
+
+/**
+* common RTMP message defines in rtmp.part2.Message-Formats.pdf.
+* cannbe parse and decode.
+*/
+class SrsCommonMessage : public ISrsMessage
+{
+private:
+	typedef ISrsMessage super;
+	disable_default_copy(SrsCommonMessage);
+// decoded message payload.
+private:
+	SrsStream* stream;
+	SrsPacket* packet;
+public:
+	SrsCommonMessage();
+	virtual ~SrsCommonMessage();
+public:
+	virtual bool can_decode();
+/**
+* decode functions.
+*/
+public:
+	/**
+	* decode packet from message payload.
+	*/
+	// TODO: use protocol to decode it.
+	virtual int decode_packet(SrsProtocol* protocol);
+	/**
+	* get the decoded packet which decoded by decode_packet().
+	* @remark, user never free the pkt, the message will auto free it.
+	*/
+	virtual SrsPacket* get_packet();
+/**
+* encode functions.
+*/
+public:
+	/**
+	* get the perfered cid(chunk stream id) which sendout over.
+	*/
+	virtual int get_perfer_cid();
+	/**
+	* set the encoded packet to encode_packet() to payload.
+	* @stream_id, the id of stream which is created by createStream.
+	* @remark, user never free the pkt, the message will auto free it.
+	* @return message itself.
+	*/
+	// TODO: refine the send methods.
+	virtual SrsCommonMessage* set_packet(SrsPacket* pkt, int stream_id);
+	/**
+	* encode the packet to message payload bytes.
+	* @remark there exists empty packet, so maybe the payload is NULL.
+	*/
+	virtual int encode_packet();
+};
+
+/**
+* shared ptr message.
+* for audio/video/data message that need less memory copy.
+* and only for output.
+*/
+class SrsSharedPtrMessage : public ISrsMessage
+{
+private:
+	typedef ISrsMessage super;
+private:
+	struct SrsSharedPtr
+	{
+		char* payload;
+		int size;
+		int perfer_cid;
+		int shared_count;
+		
+		SrsSharedPtr();
+		virtual ~SrsSharedPtr();
+	};
+	SrsSharedPtr* ptr;
+public:
+	SrsSharedPtrMessage();
+	virtual ~SrsSharedPtrMessage();
+public:
+	virtual bool can_decode();
+public:
+	/**
+	* set the shared payload.
+	* we will detach the payload of source,
+	* so ensure donot use it before.
+	*/
+	virtual int initialize(SrsCommonMessage* source);
+	/**
+	* set the shared payload.
+	* we will use the payload, donot use the payload of source.
+	*/
+	virtual int initialize(SrsCommonMessage* source, char* payload, int size);
+	virtual SrsSharedPtrMessage* copy();
+public:
+	/**
+	* get the perfered cid(chunk stream id) which sendout over.
+	*/
+	virtual int get_perfer_cid();
+	/**
+	* ignored.
+	* for shared message, nothing should be done.
+	* use initialize() to set the data.
+	*/
+	virtual int encode_packet();
+};
+
+/**
+* the decoded message payload.
+* @remark we seperate the packet from message,
+*		for the packet focus on logic and domain data,
+*		the message bind to the protocol and focus on protocol, such as header.
+* 		we can merge the message and packet, using OOAD hierachy, packet extends from message,
+* 		it's better for me to use components -- the message use the packet as payload.
+*/
+class SrsPacket
+{
+protected:
+	/**
+	* subpacket must override to provide the right class name.
+	*/
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsPacket);
+	}
+public:
+	SrsPacket();
+	virtual ~SrsPacket();
+/**
+* decode functions.
+*/
+public:
+	/**
+	* subpacket must override to decode packet from stream.
+	* @remark never invoke the super.decode, it always failed.
+	*/
+	virtual int decode(SrsStream* stream);
+/**
+* encode functions.
+*/
+public:
+	virtual int get_perfer_cid();
+	virtual int get_payload_length();
+public:
+	/**
+	* subpacket must override to provide the right message type.
+	*/
+	virtual int get_message_type();
+	/**
+	* the subpacket can override this encode,
+	* for example, video and audio will directly set the payload withou memory copy,
+	* other packet which need to serialize/encode to bytes by override the 
+	* get_size and encode_packet.
+	*/
+	virtual int encode(int& size, char*& payload);
+protected:
+	/**
+	* subpacket can override to calc the packet size.
+	*/
+	virtual int get_size();
+	/**
+	* subpacket can override to encode the payload to stream.
+	* @remark never invoke the super.encode_packet, it always failed.
+	*/
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 4.1.1. connect
+* The client sends the connect command to the server to request
+* connection to a server application instance.
+*/
+class SrsConnectAppPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsConnectAppPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Object* command_object;
+public:
+	SrsConnectAppPacket();
+	virtual ~SrsConnectAppPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+/**
+* response for SrsConnectAppPacket.
+*/
+class SrsConnectAppResPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsConnectAppResPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Object* props;
+	SrsAmf0Object* info;
+public:
+	SrsConnectAppResPacket();
+	virtual ~SrsConnectAppResPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 4.1.3. createStream
+* The client sends this command to the server to create a logical
+* channel for message communication The publishing of audio, video, and
+* metadata is carried out over stream channel created using the
+* createStream command.
+*/
+class SrsCreateStreamPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsCreateStreamPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+public:
+	SrsCreateStreamPacket();
+	virtual ~SrsCreateStreamPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+/**
+* response for SrsCreateStreamPacket.
+*/
+class SrsCreateStreamResPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsCreateStreamResPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	double stream_id;
+public:
+	SrsCreateStreamResPacket(double _transaction_id, double _stream_id);
+	virtual ~SrsCreateStreamResPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+/**
+* client close stream packet.
+*/
+class SrsCloseStreamPacket : public SrsPacket
+{
+private:
+    typedef SrsPacket super;
+protected:
+    virtual const char* get_class_name()
+    {
+        return CLASS_NAME_STRING(SrsCloseStreamPacket);
+    }
+public:
+    std::string command_name;
+    double transaction_id;
+    SrsAmf0Null* command_object;
+public:
+    SrsCloseStreamPacket();
+    virtual ~SrsCloseStreamPacket();
+public:
+    virtual int decode(SrsStream* stream);
+};
+
+/**
+* FMLE start publish: ReleaseStream/PublishStream
+*/
+class SrsFMLEStartPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsFMLEStartPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	std::string stream_name;
+public:
+	SrsFMLEStartPacket();
+	virtual ~SrsFMLEStartPacket();
+public:
+	virtual int decode(SrsStream* stream);
+};
+/**
+* response for SrsFMLEStartPacket.
+*/
+class SrsFMLEStartResPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsFMLEStartResPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	SrsAmf0Undefined* args;
+public:
+	SrsFMLEStartResPacket(double _transaction_id);
+	virtual ~SrsFMLEStartResPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* FMLE/flash publish
+* 4.2.6. Publish
+* The client sends the publish command to publish a named stream to the
+* server. Using this name, any client can play this stream and receive
+* the published audio, video, and data messages.
+*/
+class SrsPublishPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsPublishPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	std::string stream_name;
+	// optional, default to live.
+	std::string type;
+public:
+	SrsPublishPacket();
+	virtual ~SrsPublishPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 4.2.8. pause
+* The client sends the pause command to tell the server to pause or
+* start playing.
+*/
+class SrsPausePacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsPausePacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	bool is_pause;
+	double time_ms;
+public:
+	SrsPausePacket();
+	virtual ~SrsPausePacket();
+public:
+	virtual int decode(SrsStream* stream);
+};
+
+/**
+* 4.2.1. play
+* The client sends this command to the server to play a stream.
+*/
+class SrsPlayPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsPlayPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	std::string stream_name;
+	double start;
+	double duration;
+	bool reset;
+public:
+	SrsPlayPacket();
+	virtual ~SrsPlayPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+/**
+* response for SrsPlayPacket.
+* @remark, user must set the stream_id in header.
+*/
+class SrsPlayResPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsPlayResPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* command_object;
+	SrsAmf0Object* desc;
+public:
+	SrsPlayResPacket();
+	virtual ~SrsPlayResPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* when bandwidth test done, notice client.
+*/
+class SrsOnBWDonePacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsOnBWDonePacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* args;
+public:
+	SrsOnBWDonePacket();
+	virtual ~SrsOnBWDonePacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* onStatus command, AMF0 Call
+* @remark, user must set the stream_id by SrsMessage.set_packet().
+*/
+class SrsOnStatusCallPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsOnStatusCallPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* args;
+	SrsAmf0Object* data;
+public:
+	SrsOnStatusCallPacket();
+	virtual ~SrsOnStatusCallPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* the special packet for the bandwidth test.
+* actually, it's a SrsOnStatusCallPacket, but
+* 1. encode with data field, to send data to client.
+* 2. decode ignore the data field, donot care.
+*/
+class SrsBandwidthPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+	disable_default_copy(SrsBandwidthPacket);
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsBandwidthPacket);
+	}
+public:
+	std::string command_name;
+	double transaction_id;
+	SrsAmf0Null* args;
+	SrsAmf0Object* data;
+public:
+	SrsBandwidthPacket();
+	virtual ~SrsBandwidthPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+public:
+    virtual int decode(SrsStream* stream);
+public:
+	virtual bool is_starting_play();
+	virtual bool is_stopped_play();
+	virtual bool is_starting_publish();
+	virtual bool is_stopped_publish();
+	virtual bool is_flash_final();
+	static SrsBandwidthPacket* create_finish();
+	static SrsBandwidthPacket* create_start_play();
+	static SrsBandwidthPacket* create_playing();
+	static SrsBandwidthPacket* create_stop_play();
+	static SrsBandwidthPacket* create_start_publish();
+	static SrsBandwidthPacket* create_stop_publish();
+private:
+	virtual SrsBandwidthPacket* set_command(std::string command);
+};
+
+/**
+* onStatus data, AMF0 Data
+* @remark, user must set the stream_id by SrsMessage.set_packet().
+*/
+class SrsOnStatusDataPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsOnStatusDataPacket);
+	}
+public:
+	std::string command_name;
+	SrsAmf0Object* data;
+public:
+	SrsOnStatusDataPacket();
+	virtual ~SrsOnStatusDataPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* AMF0Data RtmpSampleAccess
+* @remark, user must set the stream_id by SrsMessage.set_packet().
+*/
+class SrsSampleAccessPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsSampleAccessPacket);
+	}
+public:
+	std::string command_name;
+	bool video_sample_access;
+	bool audio_sample_access;
+public:
+	SrsSampleAccessPacket();
+	virtual ~SrsSampleAccessPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* the stream metadata.
+* FMLE: @setDataFrame
+* others: onMetaData
+*/
+class SrsOnMetaDataPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsOnMetaDataPacket);
+	}
+public:
+	std::string name;
+	SrsAmf0Object* metadata;
+public:
+	SrsOnMetaDataPacket();
+	virtual ~SrsOnMetaDataPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 5.5. Window Acknowledgement Size (5)
+* The client or the server sends this message to inform the peer which
+* window size to use when sending acknowledgment.
+*/
+class SrsSetWindowAckSizePacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsSetWindowAckSizePacket);
+	}
+public:
+	int32_t ackowledgement_window_size;
+public:
+	SrsSetWindowAckSizePacket();
+	virtual ~SrsSetWindowAckSizePacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 5.3. Acknowledgement (3)
+* The client or the server sends the acknowledgment to the peer after
+* receiving bytes equal to the window size.
+*/
+class SrsAcknowledgementPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsAcknowledgementPacket);
+	}
+public:
+	int32_t sequence_number;
+public:
+	SrsAcknowledgementPacket();
+	virtual ~SrsAcknowledgementPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 7.1. Set Chunk Size
+* Protocol control message 1, Set Chunk Size, is used to notify the
+* peer about the new maximum chunk size.
+*/
+class SrsSetChunkSizePacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsSetChunkSizePacket);
+	}
+public:
+	int32_t chunk_size;
+public:
+	SrsSetChunkSizePacket();
+	virtual ~SrsSetChunkSizePacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* 5.6. Set Peer Bandwidth (6)
+* The client or the server sends this message to update the output
+* bandwidth of the peer.
+*/
+class SrsSetPeerBandwidthPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsSetPeerBandwidthPacket);
+	}
+public:
+	int32_t bandwidth;
+	int8_t type;
+public:
+	SrsSetPeerBandwidthPacket();
+	virtual ~SrsSetPeerBandwidthPacket();
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+// 3.7. User Control message
+enum SrcPCUCEventType
+{
+	 // generally, 4bytes event-data
+	SrcPCUCStreamBegin 			= 0x00,
+	SrcPCUCStreamEOF 			= 0x01,
+	SrcPCUCStreamDry 			= 0x02,
+	SrcPCUCSetBufferLength 		= 0x03, // 8bytes event-data
+	SrcPCUCStreamIsRecorded 	= 0x04,
+	SrcPCUCPingRequest 			= 0x06,
+	SrcPCUCPingResponse 		= 0x07,
+};
+
+/**
+* for the EventData is 4bytes.
+* Stream Begin(=0)			4-bytes stream ID
+* Stream EOF(=1)			4-bytes stream ID
+* StreamDry(=2)				4-bytes stream ID
+* SetBufferLength(=3)		8-bytes 4bytes stream ID, 4bytes buffer length.
+* StreamIsRecorded(=4)		4-bytes stream ID
+* PingRequest(=6)			4-bytes timestamp local server time
+* PingResponse(=7)			4-bytes timestamp received ping request.
+* 
+* 3.7. User Control message
+* +------------------------------+-------------------------
+* | Event Type ( 2- bytes ) | Event Data
+* +------------------------------+-------------------------
+* Figure 5 Pay load for the ‘User Control Message’.
+*/
+class SrsUserControlPacket : public SrsPacket
+{
+private:
+	typedef SrsPacket super;
+protected:
+	virtual const char* get_class_name()
+	{
+		return CLASS_NAME_STRING(SrsUserControlPacket);
+	}
+public:
+	// @see: SrcPCUCEventType
+	int16_t event_type;
+	int32_t event_data;
+	/**
+	* 4bytes if event_type is SetBufferLength; otherwise 0.
+	*/
+	int32_t extra_data;
+public:
+	SrsUserControlPacket();
+	virtual ~SrsUserControlPacket();
+public:
+	virtual int decode(SrsStream* stream);
+public:
+	virtual int get_perfer_cid();
+public:
+	virtual int get_message_type();
+protected:
+	virtual int get_size();
+	virtual int encode_packet(SrsStream* stream);
+};
+
+/**
+* expect a specified message, drop others util got specified one.
+* @pmsg, user must free it. NULL if not success.
+* @ppacket, store in the pmsg, user must never free it. NULL if not success.
+* @remark, only when success, user can use and must free the pmsg/ppacket.
+*/
+template<class T>
+int srs_rtmp_expect_message(SrsProtocol* protocol, SrsCommonMessage** pmsg, T** ppacket)
+{
+	*pmsg = NULL;
+	*ppacket = NULL;
+	
+	int ret = ERROR_SUCCESS;
+	
+	while (true) {
+		SrsCommonMessage* msg = NULL;
+		if ((ret = protocol->recv_message(&msg)) != ERROR_SUCCESS) {
+			srs_error("recv message failed. ret=%d", ret);
+			return ret;
+		}
+		srs_verbose("recv message success.");
+		
+		if ((ret = msg->decode_packet(protocol)) != ERROR_SUCCESS) {
+			delete msg;
+			srs_error("decode message failed. ret=%d", ret);
+			return ret;
+		}
+		
+		T* pkt = dynamic_cast<T*>(msg->get_packet());
+		if (!pkt) {
+			delete msg;
+			srs_trace("drop message(type=%d, size=%d, time=%"PRId64", sid=%d).", 
+				msg->header.message_type, msg->header.payload_length,
+				msg->header.timestamp, msg->header.stream_id);
+			continue;
+		}
+		
+		*pmsg = msg;
+		*ppacket = pkt;
+		break;
+	}
+	
+	return ret;
+}
+
+#endif