support forward stream to origin/edge

@@ -47,14 +47,16 @@ m3u8 url: http://127.0.0.1:80/live/livestream.m3u8
 8. support cache last gop for flash player to fast startup.<br/>
 8. support cache last gop for flash player to fast startup.<br/>
 9. support listen at multiple ports.<br/>
 9. support listen at multiple ports.<br/>
 10. support long time(>4.6hours) publish/play.<br/>
 10. support long time(>4.6hours) publish/play.<br/>
-11. [dev] support forward publish stream to build active-standby cluster.<br/>
-12. [plan] support live stream transcoding by ffmpeg.<br/>
-13. [plan] support full http callback api.<br/>
-14. [plan] support network based cli and json result.<br/>
-15. [plan] support bandwidth test api and flash client.<br/>
-16. no edge server, origin server only.<br/>
-17. no vod streaming, live streaming only.<br/>
-18. no multiple processes, single process only.<br/>
+11. high performace, 1800 connections(500kbps), 900Mbps, CPU 90.2%, 41MB<br/>
+12. support forward publish stream to build active-standby cluster.<br/>
+13. support broadcast by forward the stream to other servers(origin/edge).<br/>
+14. [plan] support live stream transcoding by ffmpeg.<br/>
+15. [plan] support full http callback api.<br/>
+16. [plan] support network based cli and json result.<br/>
+17. [plan] support bandwidth test api and flash client.<br/>
+18. no edge server, origin server only.<br/>
+19. no vod streaming, live streaming only.<br/>
+20. no multiple processes, single process only.<br/>
 
 
 ### Performance
 ### Performance
 1. 300 connections, 150Mbps, 500kbps, CPU 18.8%, 5956KB.
 1. 300 connections, 150Mbps, 500kbps, CPU 18.8%, 5956KB.

@@ -15,7 +15,7 @@ vhost __defaultVhost__ {
     hls_path        ./objs/nginx/html;
     hls_path        ./objs/nginx/html;
     hls_fragment    5;
     hls_fragment    5;
     hls_window      30;
     hls_window      30;
-    forward         192.168.1.50;
+    forward         127.0.0.1:1936;
 }
 }
 # the vhost which forward publish streams.
 # the vhost which forward publish streams.
 vhost forward.vhost.com {
 vhost forward.vhost.com {
@@ -103,6 +103,9 @@ pithy_print {
     publish         2000;
     publish         2000;
     # shared print interval for all play clients, in milliseconds.
     # shared print interval for all play clients, in milliseconds.
     # if not specified, set to 1300.
     # if not specified, set to 1300.
-    play            3000;  
+    play            3000;
+    # shared print interval for all forwarders, in milliseconds.
+    # if not specified, set to 2000.
+    forwarder       3000;
 }
 }
 
 

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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>
-
-#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>
-
-#define SRS_PULSE_TIMEOUT_MS 100
-#define SRS_SEND_TIMEOUT_US 5000000L
-#define SRS_RECV_TIMEOUT_US SRS_SEND_TIMEOUT_US
-#define SRS_STREAM_BUSY_SLEEP_MS 2000
-
-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();
-}
-
-SrsClient::~SrsClient()
-{
-	srs_freepa(ip);
-	srs_freep(req);
-	srs_freep(res);
-	srs_freep(rtmp);
-	srs_freep(refer);
-}
-
-// 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());
-	
-	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 = 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");
-		
-	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");
-	
-	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());
-	
-	int chunk_size = 4096;
-	SrsConfDirective* conf = config->get_chunk_size();
-	if (conf && !conf->arg0().empty()) {
-		chunk_size = ::atoi(conf->arg0().c_str());
-	}
-	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->get_stream_url());
-	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_MS * 1000);
-		return ret;
-	}
-	
-	bool enabled_cache = true;
-	conf = config->get_gop_cache(req->vhost);
-	if (conf && conf->arg0() == "off") {
-		enabled_cache = false;
-	}
-	source->set_cache(enabled_cache);
-
-	srs_info("source found, url=%s, enabled_cache=%d", req->get_stream_url().c_str(), 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;
-			}
-			srs_info("start to play stream %s success", req->stream.c_str());
-			return playing(source);
-		}
-		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;
-			}
-			srs_info("start to publish stream %s success", req->stream.c_str());
-			ret = publish(source, true);
-			source->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;
-			}
-			srs_info("flash start to publish stream %s success", req->stream.c_str());
-			ret = publish(source, false);
-			source->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;
-	}
-	
-	SrsConfDirective* conf = NULL;
-	if ((conf = config->get_vhost_enabled(req->vhost)) != NULL && conf->arg0() != "on") {
-		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();
-	}
-	
-	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_MS * 1000);
-	
-	SrsPithyPrint pithy_print(SRS_STAGE_PLAY_USER);
-
-	while (true) {
-		pithy_print.elapse(SRS_PULSE_TIMEOUT_MS);
-		
-		// 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) {
-				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("-> clock=%u, time=%"PRId64", cmr=%d, msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-				(int)(srs_get_system_time_ms()/1000), 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->vhost, req->app, req->stream)) != 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("<- clock=%u, time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-				(int)(srs_get_system_time_ms()/1000), 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.");
-	
-	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;
-}
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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>
+
+#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>
+
+#define SRS_PULSE_TIMEOUT_MS 100
+#define SRS_SEND_TIMEOUT_US 5000000L
+#define SRS_RECV_TIMEOUT_US SRS_SEND_TIMEOUT_US
+#define SRS_STREAM_BUSY_SLEEP_MS 2000
+
+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();
+}
+
+SrsClient::~SrsClient()
+{
+	srs_freepa(ip);
+	srs_freep(req);
+	srs_freep(res);
+	srs_freep(rtmp);
+	srs_freep(refer);
+}
+
+// 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());
+	
+	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 = 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");
+		
+	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");
+	
+	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());
+	
+	int chunk_size = 4096;
+	SrsConfDirective* conf = config->get_chunk_size();
+	if (conf && !conf->arg0().empty()) {
+		chunk_size = ::atoi(conf->arg0().c_str());
+	}
+	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->get_stream_url());
+	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_MS * 1000);
+		return ret;
+	}
+	
+	bool enabled_cache = true;
+	conf = config->get_gop_cache(req->vhost);
+	if (conf && conf->arg0() == "off") {
+		enabled_cache = false;
+	}
+	source->set_cache(enabled_cache);
+
+	srs_info("source found, url=%s, enabled_cache=%d", req->get_stream_url().c_str(), 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;
+			}
+			srs_info("start to play stream %s success", req->stream.c_str());
+			return playing(source);
+		}
+		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;
+			}
+			srs_info("start to publish stream %s success", req->stream.c_str());
+			ret = publish(source, true);
+			source->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;
+			}
+			srs_info("flash start to publish stream %s success", req->stream.c_str());
+			ret = publish(source, false);
+			source->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;
+	}
+	
+	SrsConfDirective* conf = NULL;
+	if ((conf = config->get_vhost_enabled(req->vhost)) != NULL && conf->arg0() != "on") {
+		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();
+	}
+	
+	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_MS * 1000);
+	
+	SrsPithyPrint pithy_print(SRS_STAGE_PLAY_USER);
+
+	while (true) {
+		pithy_print.elapse(SRS_PULSE_TIMEOUT_MS);
+		
+		// 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) {
+				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("-> clock=%u, time=%"PRId64", cmr=%d, msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+				(int)(srs_get_system_time_ms()/1000), 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->vhost, req->app, req->stream)) != 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("<- clock=%u, time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+				(int)(srs_get_system_time_ms()/1000), 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.");
+	
+	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;
+}
+

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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_config.hpp>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-// file operations.
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#include <vector>
-#include <algorithm>
-
-#include <srs_core_error.hpp>
-#include <srs_core_log.hpp>
-#include <srs_core_autofree.hpp>
-
-#define FILE_OFFSET(fd) lseek(fd, 0, SEEK_CUR)
-
-int64_t FILE_SIZE(int fd)
-{
-	int64_t pre = FILE_OFFSET(fd);
-	int64_t pos = lseek(fd, 0, SEEK_END);
-	lseek(fd, pre, SEEK_SET);
-	return pos;
-}
-
-#define LF (char)0x0a
-#define CR (char)0x0d
-
-bool is_common_space(char ch)
-{
-	return (ch == ' ' || ch == '\t' || ch == CR || ch == LF);
-}
-
-#define CONF_BUFFER_SIZE 4096
-
-SrsFileBuffer::SrsFileBuffer()
-{
-	fd = -1;
-	line = 0;
-
-	pos = last = start = new char[CONF_BUFFER_SIZE];
-	end = start + CONF_BUFFER_SIZE;
-}
-
-SrsFileBuffer::~SrsFileBuffer()
-{
-	if (fd > 0) {
-		close(fd);
-	}
-	srs_freepa(start);
-}
-
-int SrsFileBuffer::open(const char* filename)
-{
-	assert(fd == -1);
-	
-	if ((fd = ::open(filename, O_RDONLY, 0)) < 0) {
-		srs_error("open conf file error. errno=%d(%s)", errno, strerror(errno));
-		return ERROR_SYSTEM_CONFIG_INVALID;
-	}
-	
-	line = 1;
-	
-	return ERROR_SUCCESS;
-}
-
-SrsConfDirective::SrsConfDirective()
-{
-}
-
-SrsConfDirective::~SrsConfDirective()
-{
-	std::vector<SrsConfDirective*>::iterator it;
-	for (it = directives.begin(); it != directives.end(); ++it) {
-		SrsConfDirective* directive = *it;
-		srs_freep(directive);
-	}
-	directives.clear();
-}
-
-std::string SrsConfDirective::arg0()
-{
-	if (args.size() > 0) {
-		return args.at(0);
-	}
-	
-	return "";
-}
-
-std::string SrsConfDirective::arg1()
-{
-	if (args.size() > 1) {
-		return args.at(1);
-	}
-	
-	return "";
-}
-
-std::string SrsConfDirective::arg2()
-{
-	if (args.size() > 2) {
-		return args.at(2);
-	}
-	
-	return "";
-}
-
-SrsConfDirective* SrsConfDirective::at(int index)
-{
-	return directives.at(index);
-}
-
-SrsConfDirective* SrsConfDirective::get(std::string _name)
-{
-	std::vector<SrsConfDirective*>::iterator it;
-	for (it = directives.begin(); it != directives.end(); ++it) {
-		SrsConfDirective* directive = *it;
-		if (directive->name == _name) {
-			return directive;
-		}
-	}
-	
-	return NULL;
-}
-
-int SrsConfDirective::parse(const char* filename)
-{
-	int ret = ERROR_SUCCESS;
-	
-	SrsFileBuffer buffer;
-	
-	if ((ret = buffer.open(filename)) != ERROR_SUCCESS) {
-		return ret;
-	}
-	
-	return parse_conf(&buffer, parse_file);
-}
-
-// see: ngx_conf_parse
-int SrsConfDirective::parse_conf(SrsFileBuffer* buffer, SrsDirectiveType type)
-{
-	int ret = ERROR_SUCCESS;
-	
-	while (true) {
-		std::vector<std::string> args;
-		ret = read_token(buffer, args);
-		
-		/**
-		* ret maybe:
-		* ERROR_SYSTEM_CONFIG_INVALID 		error.
-		* ERROR_SYSTEM_CONFIG_DIRECTIVE		directive terminated by ';' found
-		* ERROR_SYSTEM_CONFIG_BLOCK_START	token terminated by '{' found
-		* ERROR_SYSTEM_CONFIG_BLOCK_END		the '}' found
-		* ERROR_SYSTEM_CONFIG_EOF			the config file is done
-		*/
-		if (ret == ERROR_SYSTEM_CONFIG_INVALID) {
-			return ret;
-		}
-		if (ret == ERROR_SYSTEM_CONFIG_BLOCK_END) {
-			if (type != parse_block) {
-				srs_error("line %d: unexpected \"}\"", buffer->line);
-				return ret;
-			}
-			return ERROR_SUCCESS;
-		}
-		if (ret == ERROR_SYSTEM_CONFIG_EOF) {
-			if (type == parse_block) {
-				srs_error("line %d: unexpected end of file, expecting \"}\"", buffer->line);
-				return ret;
-			}
-			return ERROR_SUCCESS;
-		}
-		
-		if (args.empty()) {
-			srs_error("line %d: empty directive.", buffer->line);
-			return ret;
-		}
-		
-		// build directive tree.
-		SrsConfDirective* directive = new SrsConfDirective();
-
-		directive->conf_line = buffer->line;
-		directive->name = args[0];
-		args.erase(args.begin());
-		directive->args.swap(args);
-		
-		directives.push_back(directive);
-		
-		if (ret == ERROR_SYSTEM_CONFIG_BLOCK_START) {
-			if ((ret = directive->parse_conf(buffer, parse_block)) != ERROR_SUCCESS) {
-				return ret;
-			}
-		}
-	}
-	
-	return ret;
-}
-
-// see: ngx_conf_read_token
-int SrsConfDirective::read_token(SrsFileBuffer* buffer, std::vector<std::string>& args)
-{
-	int ret = ERROR_SUCCESS;
-
-	char* pstart = buffer->pos;
-	int startline = buffer->line;
-
-	bool sharp_comment = false;
-	
-	bool d_quoted = false;
-	bool s_quoted = false;
-	
-	bool need_space = false;
-	bool last_space = true;
-	
-	while (true) {
-		if ((ret = refill_buffer(buffer, d_quoted, s_quoted, startline, pstart)) != ERROR_SUCCESS) {
-			if (!args.empty() || !last_space) {
-				srs_error("line %d: unexpected end of file, expecting ; or \"}\"", buffer->line);
-				return ERROR_SYSTEM_CONFIG_INVALID;
-			}
-			return ret;
-		}
-		
-		char ch = *buffer->pos++;
-		
-		if (ch == LF) {
-			buffer->line++;
-			sharp_comment = false;
-		}
-		
-		if (sharp_comment) {
-			continue;
-		}
-		
-		if (need_space) {
-			if (is_common_space(ch)) {
-				last_space = true;
-				need_space = false;
-				continue;
-			}
-			if (ch == ';') {
-				return ERROR_SYSTEM_CONFIG_DIRECTIVE;
-			}
-			if (ch == '{') {
-				return ERROR_SYSTEM_CONFIG_BLOCK_START;
-			}
-			srs_error("line %d: unexpected '%c'", buffer->line, ch);
-			return ERROR_SYSTEM_CONFIG_INVALID; 
-		}
-		
-		// last charecter is space.
-		if (last_space) {
-			if (is_common_space(ch)) {
-				continue;
-			}
-			pstart = buffer->pos - 1;
-			startline = buffer->line;
-			switch (ch) {
-				case ';':
-					if (args.size() == 0) {
-						srs_error("line %d: unexpected ';'", buffer->line);
-						return ERROR_SYSTEM_CONFIG_INVALID;
-					}
-					return ERROR_SYSTEM_CONFIG_DIRECTIVE;
-				case '{':
-					if (args.size() == 0) {
-						srs_error("line %d: unexpected '{'", buffer->line);
-						return ERROR_SYSTEM_CONFIG_INVALID;
-					}
-					return ERROR_SYSTEM_CONFIG_BLOCK_START;
-				case '}':
-					if (args.size() != 0) {
-						srs_error("line %d: unexpected '}'", buffer->line);
-						return ERROR_SYSTEM_CONFIG_INVALID;
-					}
-					return ERROR_SYSTEM_CONFIG_BLOCK_END;
-				case '#':
-					sharp_comment = 1;
-					continue;
-				case '"':
-					pstart++;
-					d_quoted = true;
-					last_space = 0;
-					continue;
-				case '\'':
-					pstart++;
-					s_quoted = true;
-					last_space = 0;
-					continue;
-				default:
-					last_space = 0;
-					continue;
-			}
-		} else {
-		// last charecter is not space
-			bool found = false;
-			if (d_quoted) {
-				if (ch == '"') {
-					d_quoted = false;
-					need_space = true;
-					found = true;
-				}
-			} else if (s_quoted) {
-				if (ch == '\'') {
-					s_quoted = false;
-					need_space = true;
-					found = true;
-				}
-			} else if (is_common_space(ch) || ch == ';' || ch == '{') {
-				last_space = true;
-				found = 1;
-			}
-			
-			if (found) {
-				int len = buffer->pos - pstart;
-				char* word = new char[len];
-				memcpy(word, pstart, len);
-				word[len - 1] = 0;
-				
-				args.push_back(word);
-				srs_freepa(word);
-				
-				if (ch == ';') {
-					return ERROR_SYSTEM_CONFIG_DIRECTIVE;
-				}
-				if (ch == '{') {
-					return ERROR_SYSTEM_CONFIG_BLOCK_START;
-				}
-			}
-		}
-	}
-	
-	return ret;
-}
-
-int SrsConfDirective::refill_buffer(SrsFileBuffer* buffer, bool d_quoted, bool s_quoted, int startline, char*& pstart)
-{
-	int ret = ERROR_SUCCESS;
-	
-	if (buffer->pos < buffer->last) {
-		return ret;
-	}
-	
-	int size = FILE_SIZE(buffer->fd) - FILE_OFFSET(buffer->fd);
-	
-	if (size <= 0) {
-		return ERROR_SYSTEM_CONFIG_EOF;
-	}
-	
-	int len = buffer->pos - buffer->start;
-	if (len >= CONF_BUFFER_SIZE) {
-		buffer->line = startline;
-		
-		if (!d_quoted && !s_quoted) {
-			srs_error("line %d: too long parameter \"%*s...\" started", 
-				buffer->line, 10, buffer->start);
-			
-		} else {
-			srs_error("line %d: too long parameter, "
-				"probably missing terminating '%c' character", buffer->line, d_quoted? '"':'\'');
-		}
-		return ERROR_SYSTEM_CONFIG_INVALID;
-	}
-	
-	if (len) {
-		memmove(buffer->start, pstart, len);
-	}
-	
-	size = srs_min(size, buffer->end - (buffer->start + len));
-	int n = read(buffer->fd, buffer->start + len, size);
-	if (n != size) {
-		srs_error("read file read error. expect %d, actual %d bytes.", size, n);
-		return ERROR_SYSTEM_CONFIG_INVALID;
-	}
-	
-	buffer->pos = buffer->start + len;
-	buffer->last = buffer->pos + n;
-	pstart = buffer->start;
-	
-	return ret;
-}
-
-SrsConfig* config = new SrsConfig();
-
-SrsConfig::SrsConfig()
-{
-	show_help = false;
-	show_version = false;
-	
-	root = new SrsConfDirective();
-	root->conf_line = 0;
-	root->name = "root";
-}
-
-SrsConfig::~SrsConfig()
-{
-	srs_freep(root);
-}
-
-int SrsConfig::reload()
-{
-	int ret = ERROR_SUCCESS;
-
-	SrsConfig conf;
-	if ((ret = conf.parse_file(config_file.c_str())) != ERROR_SUCCESS) {
-		srs_error("config reloader parse file failed. ret=%d", ret);
-		return ret;
-	}
-	srs_info("config reloader parse file success.");
-	
-	// store current root to old_root,
-	// and reap the root from conf to current root.
-	SrsConfDirective* old_root = root;
-	SrsAutoFree(SrsConfDirective, old_root, false);
-	
-	root = conf.root;
-	conf.root = NULL;
-	
-	// merge config.
-	std::vector<SrsReloadHandler*>::iterator it;
-
-	// merge config: listen
-	if (!srs_directive_equals(root->get("listen"), old_root->get("listen"))) {
-		for (it = subscribes.begin(); it != subscribes.end(); ++it) {
-			SrsReloadHandler* subscribe = *it;
-			if ((ret = subscribe->on_reload_listen()) != ERROR_SUCCESS) {
-				srs_error("notify subscribes reload listen failed. ret=%d", ret);
-				return ret;
-			}
-		}
-		srs_trace("reload listen success.");
-	}
-	// merge config: pithy_print
-	if (!srs_directive_equals(root->get("pithy_print"), old_root->get("pithy_print"))) {
-		for (it = subscribes.begin(); it != subscribes.end(); ++it) {
-			SrsReloadHandler* subscribe = *it;
-			if ((ret = subscribe->on_reload_pithy_print()) != ERROR_SUCCESS) {
-				srs_error("notify subscribes pithy_print listen failed. ret=%d", ret);
-				return ret;
-			}
-		}
-		srs_trace("reload pithy_print success.");
-	}
-	
-	return ret;
-}
-
-void SrsConfig::subscribe(SrsReloadHandler* handler)
-{
-	std::vector<SrsReloadHandler*>::iterator it;
-	
-	it = std::find(subscribes.begin(), subscribes.end(), handler);
-	if (it != subscribes.end()) {
-		return;
-	}
-	
-	subscribes.push_back(handler);
-}
-
-void SrsConfig::unsubscribe(SrsReloadHandler* handler)
-{
-	std::vector<SrsReloadHandler*>::iterator it;
-	
-	it = std::find(subscribes.begin(), subscribes.end(), handler);
-	if (it == subscribes.end()) {
-		return;
-	}
-	
-	subscribes.erase(it);
-}
-
-// see: ngx_get_options
-int SrsConfig::parse_options(int argc, char** argv)
-{
-	int ret = ERROR_SUCCESS;
-	
-	for (int i = 1; i < argc; i++) {
-		if ((ret = parse_argv(i, argv)) != ERROR_SUCCESS) {
-			return ret;
-		}
-	}
-	
-	if (show_help) {
-		print_help(argv);
-	}
-	
-	if (show_version) {
-		printf("%s\n", RTMP_SIG_SRS_VERSION);
-	}
-	
-	if (show_help || show_version) {
-		exit(0);
-	}
-	
-	if (config_file.empty()) {
-		ret = ERROR_SYSTEM_CONFIG_INVALID;
-		srs_error("config file not specified, see help: %s -h, ret=%d", argv[0], ret);
-		return ret;
-	}
-
-	return parse_file(config_file.c_str());
-}
-
-SrsConfDirective* SrsConfig::get_vhost(std::string vhost)
-{
-	srs_assert(root);
-	
-	for (int i = 0; i < (int)root->directives.size(); i++) {
-		SrsConfDirective* conf = root->at(i);
-		
-		if (conf->name != "vhost") {
-			continue;
-		}
-		
-		if (conf->arg0() == vhost) {
-			return conf;
-		}
-	}
-	
-	if (vhost != RTMP_VHOST_DEFAULT) {
-		return get_vhost(RTMP_VHOST_DEFAULT);
-	}
-	
-	return NULL;
-}
-
-SrsConfDirective* SrsConfig::get_vhost_enabled(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("enabled");
-}
-
-SrsConfDirective* SrsConfig::get_gop_cache(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("gop_cache");
-}
-
-SrsConfDirective* SrsConfig::get_forward(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("forward");
-}
-
-SrsConfDirective* SrsConfig::get_hls(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("hls");
-}
-
-SrsConfDirective* SrsConfig::get_hls_path(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("hls_path");
-}
-
-SrsConfDirective* SrsConfig::get_hls_fragment(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("hls_fragment");
-}
-
-SrsConfDirective* SrsConfig::get_hls_window(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("hls_window");
-}
-
-SrsConfDirective* SrsConfig::get_refer(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("refer");
-}
-
-SrsConfDirective* SrsConfig::get_refer_play(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("refer_play");
-}
-
-SrsConfDirective* SrsConfig::get_refer_publish(std::string vhost)
-{
-	SrsConfDirective* conf = get_vhost(vhost);
-
-	if (!conf) {
-		return NULL;
-	}
-	
-	return conf->get("refer_publish");
-}
-
-SrsConfDirective* SrsConfig::get_listen()
-{
-	return root->get("listen");
-}
-
-SrsConfDirective* SrsConfig::get_chunk_size()
-{
-	return root->get("chunk_size");
-}
-
-SrsConfDirective* SrsConfig::get_pithy_print_publish()
-{
-	SrsConfDirective* pithy = root->get("pithy_print");
-	if (!pithy) {
-		return NULL;
-	}
-	
-	return pithy->get("publish");
-}
-
-SrsConfDirective* SrsConfig::get_pithy_print_play()
-{
-	SrsConfDirective* pithy = root->get("pithy_print");
-	if (!pithy) {
-		return NULL;
-	}
-	
-	return pithy->get("play");
-}
-
-int SrsConfig::parse_file(const char* filename)
-{
-	int ret = ERROR_SUCCESS;
-	
-	config_file = filename;
-	
-	if (config_file.empty()) {
-		return ERROR_SYSTEM_CONFIG_INVALID;
-	}
-	
-	if ((ret = root->parse(config_file.c_str())) != ERROR_SUCCESS) {
-		return ret;
-	}
-	
-	SrsConfDirective* conf = NULL;
-	if ((conf = get_listen()) == NULL || conf->args.size() == 0) {
-		ret = ERROR_SYSTEM_CONFIG_INVALID;
-		srs_error("line %d: conf error, "
-			"directive \"listen\" is empty, ret=%d", (conf? conf->conf_line:0), ret);
-		return ret;
-	}
-	// TODO: check the hls.
-	// TODO: check other config.
-	// TODO: check hls.
-	// TODO: check ssl.
-	
-	return ret;
-}
-
-int SrsConfig::parse_argv(int& i, char** argv)
-{
-	int ret = ERROR_SUCCESS;
-
-	char* p = argv[i];
-		
-	if (*p++ != '-') {
-		ret = ERROR_SYSTEM_CONFIG_INVALID;
-		srs_error("invalid options(index=%d, value=%s), "
-			"must starts with -, see help: %s -h, ret=%d", i, argv[i], argv[0], ret);
-		return ret;
-	}
-	
-	while (*p) {
-		switch (*p++) {
-			case '?':
-			case 'h':
-				show_help = true;
-				break;
-			case 'v':
-			case 'V':
-				show_version = true;
-				break;
-			case 'c':
-				if (*p) {
-					config_file = p;
-					return ret;
-				}
-				if (argv[++i]) {
-					config_file = argv[i];
-					return ret;
-				}
-				ret = ERROR_SYSTEM_CONFIG_INVALID;
-				srs_error("option \"-c\" requires parameter, ret=%d", ret);
-				return ret;
-			default:
-				ret = ERROR_SYSTEM_CONFIG_INVALID;
-				srs_error("invalid option: \"%c\", see help: %s -h, ret=%d", *(p - 1), argv[0], ret);
-				return ret;
-		}
-	}
-	
-	return ret;
-}
-
-void SrsConfig::print_help(char** argv)
-{
-	printf(RTMP_SIG_SRS_NAME" "RTMP_SIG_SRS_VERSION
-		" Copyright (c) 2013 winlin\n"
-		"configuration: "SRS_CONFIGURE"\n"
-		"Usage: %s [-h?vV] [-c <filename>]\n" 
-		"\n"
-		"Options:\n"
-		"   -?-h            : show help\n"
-		"   -v-V            : show version and exit\n"
-		"   -c filename     : set configuration file\n"
-		"\n"
-		RTMP_SIG_SRS_WEB"\n"
-		RTMP_SIG_SRS_URL"\n"
-		"Email: "RTMP_SIG_SRS_EMAIL"\n"
-		"\n",
-		argv[0]);
-}
-
-bool srs_directive_equals(SrsConfDirective* a, SrsConfDirective* b)
-{
-	if (!a || !b) {
-		return false;
-	}
-	
-	if (a->name != b->name) {
-		return false;
-	}
-	
-	if (a->args.size() != b->args.size()) {
-		return false;
-	}
-	
-	for (int i = 0; i < (int)a->args.size(); i++) {
-		if (a->args.at(i) != b->args.at(i)) {
-			return false;
-		}
-	}
-	
-	if (a->directives.size() != b->directives.size()) {
-		return false;
-	}
-	
-	for (int i = 0; i < (int)a->directives.size(); i++) {
-		SrsConfDirective* a0 = a->at(i);
-		SrsConfDirective* b0 = b->at(i);
-		
-		if (!srs_directive_equals(a0, b0)) {
-			return false;
-		}
-	}
-	
-	return true;
-}
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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_config.hpp>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+// file operations.
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <vector>
+#include <algorithm>
+
+#include <srs_core_error.hpp>
+#include <srs_core_log.hpp>
+#include <srs_core_autofree.hpp>
+
+#define FILE_OFFSET(fd) lseek(fd, 0, SEEK_CUR)
+
+int64_t FILE_SIZE(int fd)
+{
+	int64_t pre = FILE_OFFSET(fd);
+	int64_t pos = lseek(fd, 0, SEEK_END);
+	lseek(fd, pre, SEEK_SET);
+	return pos;
+}
+
+#define LF (char)0x0a
+#define CR (char)0x0d
+
+bool is_common_space(char ch)
+{
+	return (ch == ' ' || ch == '\t' || ch == CR || ch == LF);
+}
+
+#define CONF_BUFFER_SIZE 4096
+
+SrsFileBuffer::SrsFileBuffer()
+{
+	fd = -1;
+	line = 0;
+
+	pos = last = start = new char[CONF_BUFFER_SIZE];
+	end = start + CONF_BUFFER_SIZE;
+}
+
+SrsFileBuffer::~SrsFileBuffer()
+{
+	if (fd > 0) {
+		close(fd);
+	}
+	srs_freepa(start);
+}
+
+int SrsFileBuffer::open(const char* filename)
+{
+	assert(fd == -1);
+	
+	if ((fd = ::open(filename, O_RDONLY, 0)) < 0) {
+		srs_error("open conf file error. errno=%d(%s)", errno, strerror(errno));
+		return ERROR_SYSTEM_CONFIG_INVALID;
+	}
+	
+	line = 1;
+	
+	return ERROR_SUCCESS;
+}
+
+SrsConfDirective::SrsConfDirective()
+{
+}
+
+SrsConfDirective::~SrsConfDirective()
+{
+	std::vector<SrsConfDirective*>::iterator it;
+	for (it = directives.begin(); it != directives.end(); ++it) {
+		SrsConfDirective* directive = *it;
+		srs_freep(directive);
+	}
+	directives.clear();
+}
+
+std::string SrsConfDirective::arg0()
+{
+	if (args.size() > 0) {
+		return args.at(0);
+	}
+	
+	return "";
+}
+
+std::string SrsConfDirective::arg1()
+{
+	if (args.size() > 1) {
+		return args.at(1);
+	}
+	
+	return "";
+}
+
+std::string SrsConfDirective::arg2()
+{
+	if (args.size() > 2) {
+		return args.at(2);
+	}
+	
+	return "";
+}
+
+SrsConfDirective* SrsConfDirective::at(int index)
+{
+	return directives.at(index);
+}
+
+SrsConfDirective* SrsConfDirective::get(std::string _name)
+{
+	std::vector<SrsConfDirective*>::iterator it;
+	for (it = directives.begin(); it != directives.end(); ++it) {
+		SrsConfDirective* directive = *it;
+		if (directive->name == _name) {
+			return directive;
+		}
+	}
+	
+	return NULL;
+}
+
+int SrsConfDirective::parse(const char* filename)
+{
+	int ret = ERROR_SUCCESS;
+	
+	SrsFileBuffer buffer;
+	
+	if ((ret = buffer.open(filename)) != ERROR_SUCCESS) {
+		return ret;
+	}
+	
+	return parse_conf(&buffer, parse_file);
+}
+
+// see: ngx_conf_parse
+int SrsConfDirective::parse_conf(SrsFileBuffer* buffer, SrsDirectiveType type)
+{
+	int ret = ERROR_SUCCESS;
+	
+	while (true) {
+		std::vector<std::string> args;
+		ret = read_token(buffer, args);
+		
+		/**
+		* ret maybe:
+		* ERROR_SYSTEM_CONFIG_INVALID 		error.
+		* ERROR_SYSTEM_CONFIG_DIRECTIVE		directive terminated by ';' found
+		* ERROR_SYSTEM_CONFIG_BLOCK_START	token terminated by '{' found
+		* ERROR_SYSTEM_CONFIG_BLOCK_END		the '}' found
+		* ERROR_SYSTEM_CONFIG_EOF			the config file is done
+		*/
+		if (ret == ERROR_SYSTEM_CONFIG_INVALID) {
+			return ret;
+		}
+		if (ret == ERROR_SYSTEM_CONFIG_BLOCK_END) {
+			if (type != parse_block) {
+				srs_error("line %d: unexpected \"}\"", buffer->line);
+				return ret;
+			}
+			return ERROR_SUCCESS;
+		}
+		if (ret == ERROR_SYSTEM_CONFIG_EOF) {
+			if (type == parse_block) {
+				srs_error("line %d: unexpected end of file, expecting \"}\"", buffer->line);
+				return ret;
+			}
+			return ERROR_SUCCESS;
+		}
+		
+		if (args.empty()) {
+			srs_error("line %d: empty directive.", buffer->line);
+			return ret;
+		}
+		
+		// build directive tree.
+		SrsConfDirective* directive = new SrsConfDirective();
+
+		directive->conf_line = buffer->line;
+		directive->name = args[0];
+		args.erase(args.begin());
+		directive->args.swap(args);
+		
+		directives.push_back(directive);
+		
+		if (ret == ERROR_SYSTEM_CONFIG_BLOCK_START) {
+			if ((ret = directive->parse_conf(buffer, parse_block)) != ERROR_SUCCESS) {
+				return ret;
+			}
+		}
+	}
+	
+	return ret;
+}
+
+// see: ngx_conf_read_token
+int SrsConfDirective::read_token(SrsFileBuffer* buffer, std::vector<std::string>& args)
+{
+	int ret = ERROR_SUCCESS;
+
+	char* pstart = buffer->pos;
+	int startline = buffer->line;
+
+	bool sharp_comment = false;
+	
+	bool d_quoted = false;
+	bool s_quoted = false;
+	
+	bool need_space = false;
+	bool last_space = true;
+	
+	while (true) {
+		if ((ret = refill_buffer(buffer, d_quoted, s_quoted, startline, pstart)) != ERROR_SUCCESS) {
+			if (!args.empty() || !last_space) {
+				srs_error("line %d: unexpected end of file, expecting ; or \"}\"", buffer->line);
+				return ERROR_SYSTEM_CONFIG_INVALID;
+			}
+			return ret;
+		}
+		
+		char ch = *buffer->pos++;
+		
+		if (ch == LF) {
+			buffer->line++;
+			sharp_comment = false;
+		}
+		
+		if (sharp_comment) {
+			continue;
+		}
+		
+		if (need_space) {
+			if (is_common_space(ch)) {
+				last_space = true;
+				need_space = false;
+				continue;
+			}
+			if (ch == ';') {
+				return ERROR_SYSTEM_CONFIG_DIRECTIVE;
+			}
+			if (ch == '{') {
+				return ERROR_SYSTEM_CONFIG_BLOCK_START;
+			}
+			srs_error("line %d: unexpected '%c'", buffer->line, ch);
+			return ERROR_SYSTEM_CONFIG_INVALID; 
+		}
+		
+		// last charecter is space.
+		if (last_space) {
+			if (is_common_space(ch)) {
+				continue;
+			}
+			pstart = buffer->pos - 1;
+			startline = buffer->line;
+			switch (ch) {
+				case ';':
+					if (args.size() == 0) {
+						srs_error("line %d: unexpected ';'", buffer->line);
+						return ERROR_SYSTEM_CONFIG_INVALID;
+					}
+					return ERROR_SYSTEM_CONFIG_DIRECTIVE;
+				case '{':
+					if (args.size() == 0) {
+						srs_error("line %d: unexpected '{'", buffer->line);
+						return ERROR_SYSTEM_CONFIG_INVALID;
+					}
+					return ERROR_SYSTEM_CONFIG_BLOCK_START;
+				case '}':
+					if (args.size() != 0) {
+						srs_error("line %d: unexpected '}'", buffer->line);
+						return ERROR_SYSTEM_CONFIG_INVALID;
+					}
+					return ERROR_SYSTEM_CONFIG_BLOCK_END;
+				case '#':
+					sharp_comment = 1;
+					continue;
+				case '"':
+					pstart++;
+					d_quoted = true;
+					last_space = 0;
+					continue;
+				case '\'':
+					pstart++;
+					s_quoted = true;
+					last_space = 0;
+					continue;
+				default:
+					last_space = 0;
+					continue;
+			}
+		} else {
+		// last charecter is not space
+			bool found = false;
+			if (d_quoted) {
+				if (ch == '"') {
+					d_quoted = false;
+					need_space = true;
+					found = true;
+				}
+			} else if (s_quoted) {
+				if (ch == '\'') {
+					s_quoted = false;
+					need_space = true;
+					found = true;
+				}
+			} else if (is_common_space(ch) || ch == ';' || ch == '{') {
+				last_space = true;
+				found = 1;
+			}
+			
+			if (found) {
+				int len = buffer->pos - pstart;
+				char* word = new char[len];
+				memcpy(word, pstart, len);
+				word[len - 1] = 0;
+				
+				args.push_back(word);
+				srs_freepa(word);
+				
+				if (ch == ';') {
+					return ERROR_SYSTEM_CONFIG_DIRECTIVE;
+				}
+				if (ch == '{') {
+					return ERROR_SYSTEM_CONFIG_BLOCK_START;
+				}
+			}
+		}
+	}
+	
+	return ret;
+}
+
+int SrsConfDirective::refill_buffer(SrsFileBuffer* buffer, bool d_quoted, bool s_quoted, int startline, char*& pstart)
+{
+	int ret = ERROR_SUCCESS;
+	
+	if (buffer->pos < buffer->last) {
+		return ret;
+	}
+	
+	int size = FILE_SIZE(buffer->fd) - FILE_OFFSET(buffer->fd);
+	
+	if (size <= 0) {
+		return ERROR_SYSTEM_CONFIG_EOF;
+	}
+	
+	int len = buffer->pos - buffer->start;
+	if (len >= CONF_BUFFER_SIZE) {
+		buffer->line = startline;
+		
+		if (!d_quoted && !s_quoted) {
+			srs_error("line %d: too long parameter \"%*s...\" started", 
+				buffer->line, 10, buffer->start);
+			
+		} else {
+			srs_error("line %d: too long parameter, "
+				"probably missing terminating '%c' character", buffer->line, d_quoted? '"':'\'');
+		}
+		return ERROR_SYSTEM_CONFIG_INVALID;
+	}
+	
+	if (len) {
+		memmove(buffer->start, pstart, len);
+	}
+	
+	size = srs_min(size, buffer->end - (buffer->start + len));
+	int n = read(buffer->fd, buffer->start + len, size);
+	if (n != size) {
+		srs_error("read file read error. expect %d, actual %d bytes.", size, n);
+		return ERROR_SYSTEM_CONFIG_INVALID;
+	}
+	
+	buffer->pos = buffer->start + len;
+	buffer->last = buffer->pos + n;
+	pstart = buffer->start;
+	
+	return ret;
+}
+
+SrsConfig* config = new SrsConfig();
+
+SrsConfig::SrsConfig()
+{
+	show_help = false;
+	show_version = false;
+	
+	root = new SrsConfDirective();
+	root->conf_line = 0;
+	root->name = "root";
+}
+
+SrsConfig::~SrsConfig()
+{
+	srs_freep(root);
+}
+
+int SrsConfig::reload()
+{
+	int ret = ERROR_SUCCESS;
+
+	SrsConfig conf;
+	if ((ret = conf.parse_file(config_file.c_str())) != ERROR_SUCCESS) {
+		srs_error("config reloader parse file failed. ret=%d", ret);
+		return ret;
+	}
+	srs_info("config reloader parse file success.");
+	
+	// store current root to old_root,
+	// and reap the root from conf to current root.
+	SrsConfDirective* old_root = root;
+	SrsAutoFree(SrsConfDirective, old_root, false);
+	
+	root = conf.root;
+	conf.root = NULL;
+	
+	// merge config.
+	std::vector<SrsReloadHandler*>::iterator it;
+
+	// merge config: listen
+	if (!srs_directive_equals(root->get("listen"), old_root->get("listen"))) {
+		for (it = subscribes.begin(); it != subscribes.end(); ++it) {
+			SrsReloadHandler* subscribe = *it;
+			if ((ret = subscribe->on_reload_listen()) != ERROR_SUCCESS) {
+				srs_error("notify subscribes reload listen failed. ret=%d", ret);
+				return ret;
+			}
+		}
+		srs_trace("reload listen success.");
+	}
+	// merge config: pithy_print
+	if (!srs_directive_equals(root->get("pithy_print"), old_root->get("pithy_print"))) {
+		for (it = subscribes.begin(); it != subscribes.end(); ++it) {
+			SrsReloadHandler* subscribe = *it;
+			if ((ret = subscribe->on_reload_pithy_print()) != ERROR_SUCCESS) {
+				srs_error("notify subscribes pithy_print listen failed. ret=%d", ret);
+				return ret;
+			}
+		}
+		srs_trace("reload pithy_print success.");
+	}
+	
+	return ret;
+}
+
+void SrsConfig::subscribe(SrsReloadHandler* handler)
+{
+	std::vector<SrsReloadHandler*>::iterator it;
+	
+	it = std::find(subscribes.begin(), subscribes.end(), handler);
+	if (it != subscribes.end()) {
+		return;
+	}
+	
+	subscribes.push_back(handler);
+}
+
+void SrsConfig::unsubscribe(SrsReloadHandler* handler)
+{
+	std::vector<SrsReloadHandler*>::iterator it;
+	
+	it = std::find(subscribes.begin(), subscribes.end(), handler);
+	if (it == subscribes.end()) {
+		return;
+	}
+	
+	subscribes.erase(it);
+}
+
+// see: ngx_get_options
+int SrsConfig::parse_options(int argc, char** argv)
+{
+	int ret = ERROR_SUCCESS;
+	
+	for (int i = 1; i < argc; i++) {
+		if ((ret = parse_argv(i, argv)) != ERROR_SUCCESS) {
+			return ret;
+		}
+	}
+	
+	if (show_help) {
+		print_help(argv);
+	}
+	
+	if (show_version) {
+		printf("%s\n", RTMP_SIG_SRS_VERSION);
+	}
+	
+	if (show_help || show_version) {
+		exit(0);
+	}
+	
+	if (config_file.empty()) {
+		ret = ERROR_SYSTEM_CONFIG_INVALID;
+		srs_error("config file not specified, see help: %s -h, ret=%d", argv[0], ret);
+		return ret;
+	}
+
+	return parse_file(config_file.c_str());
+}
+
+SrsConfDirective* SrsConfig::get_vhost(std::string vhost)
+{
+	srs_assert(root);
+	
+	for (int i = 0; i < (int)root->directives.size(); i++) {
+		SrsConfDirective* conf = root->at(i);
+		
+		if (conf->name != "vhost") {
+			continue;
+		}
+		
+		if (conf->arg0() == vhost) {
+			return conf;
+		}
+	}
+	
+	if (vhost != RTMP_VHOST_DEFAULT) {
+		return get_vhost(RTMP_VHOST_DEFAULT);
+	}
+	
+	return NULL;
+}
+
+SrsConfDirective* SrsConfig::get_vhost_enabled(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("enabled");
+}
+
+SrsConfDirective* SrsConfig::get_gop_cache(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("gop_cache");
+}
+
+SrsConfDirective* SrsConfig::get_forward(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("forward");
+}
+
+SrsConfDirective* SrsConfig::get_hls(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("hls");
+}
+
+SrsConfDirective* SrsConfig::get_hls_path(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("hls_path");
+}
+
+SrsConfDirective* SrsConfig::get_hls_fragment(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("hls_fragment");
+}
+
+SrsConfDirective* SrsConfig::get_hls_window(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("hls_window");
+}
+
+SrsConfDirective* SrsConfig::get_refer(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("refer");
+}
+
+SrsConfDirective* SrsConfig::get_refer_play(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("refer_play");
+}
+
+SrsConfDirective* SrsConfig::get_refer_publish(std::string vhost)
+{
+	SrsConfDirective* conf = get_vhost(vhost);
+
+	if (!conf) {
+		return NULL;
+	}
+	
+	return conf->get("refer_publish");
+}
+
+SrsConfDirective* SrsConfig::get_listen()
+{
+	return root->get("listen");
+}
+
+SrsConfDirective* SrsConfig::get_chunk_size()
+{
+	return root->get("chunk_size");
+}
+
+SrsConfDirective* SrsConfig::get_pithy_print_publish()
+{
+	SrsConfDirective* pithy = root->get("pithy_print");
+	if (!pithy) {
+		return NULL;
+	}
+	
+	return pithy->get("publish");
+}
+
+SrsConfDirective* SrsConfig::get_pithy_print_forwarder()
+{
+	SrsConfDirective* pithy = root->get("pithy_print");
+	if (!pithy) {
+		return NULL;
+	}
+	
+	return pithy->get("forwarder");
+}
+
+SrsConfDirective* SrsConfig::get_pithy_print_play()
+{
+	SrsConfDirective* pithy = root->get("pithy_print");
+	if (!pithy) {
+		return NULL;
+	}
+	
+	return pithy->get("play");
+}
+
+int SrsConfig::parse_file(const char* filename)
+{
+	int ret = ERROR_SUCCESS;
+	
+	config_file = filename;
+	
+	if (config_file.empty()) {
+		return ERROR_SYSTEM_CONFIG_INVALID;
+	}
+	
+	if ((ret = root->parse(config_file.c_str())) != ERROR_SUCCESS) {
+		return ret;
+	}
+	
+	SrsConfDirective* conf = NULL;
+	if ((conf = get_listen()) == NULL || conf->args.size() == 0) {
+		ret = ERROR_SYSTEM_CONFIG_INVALID;
+		srs_error("line %d: conf error, "
+			"directive \"listen\" is empty, ret=%d", (conf? conf->conf_line:0), ret);
+		return ret;
+	}
+	// TODO: check the hls.
+	// TODO: check other config.
+	// TODO: check hls.
+	// TODO: check ssl.
+	
+	return ret;
+}
+
+int SrsConfig::parse_argv(int& i, char** argv)
+{
+	int ret = ERROR_SUCCESS;
+
+	char* p = argv[i];
+		
+	if (*p++ != '-') {
+		ret = ERROR_SYSTEM_CONFIG_INVALID;
+		srs_error("invalid options(index=%d, value=%s), "
+			"must starts with -, see help: %s -h, ret=%d", i, argv[i], argv[0], ret);
+		return ret;
+	}
+	
+	while (*p) {
+		switch (*p++) {
+			case '?':
+			case 'h':
+				show_help = true;
+				break;
+			case 'v':
+			case 'V':
+				show_version = true;
+				break;
+			case 'c':
+				if (*p) {
+					config_file = p;
+					return ret;
+				}
+				if (argv[++i]) {
+					config_file = argv[i];
+					return ret;
+				}
+				ret = ERROR_SYSTEM_CONFIG_INVALID;
+				srs_error("option \"-c\" requires parameter, ret=%d", ret);
+				return ret;
+			default:
+				ret = ERROR_SYSTEM_CONFIG_INVALID;
+				srs_error("invalid option: \"%c\", see help: %s -h, ret=%d", *(p - 1), argv[0], ret);
+				return ret;
+		}
+	}
+	
+	return ret;
+}
+
+void SrsConfig::print_help(char** argv)
+{
+	printf(RTMP_SIG_SRS_NAME" "RTMP_SIG_SRS_VERSION
+		" Copyright (c) 2013 winlin\n"
+		"configuration: "SRS_CONFIGURE"\n"
+		"Usage: %s [-h?vV] [-c <filename>]\n" 
+		"\n"
+		"Options:\n"
+		"   -?-h            : show help\n"
+		"   -v-V            : show version and exit\n"
+		"   -c filename     : set configuration file\n"
+		"\n"
+		RTMP_SIG_SRS_WEB"\n"
+		RTMP_SIG_SRS_URL"\n"
+		"Email: "RTMP_SIG_SRS_EMAIL"\n"
+		"\n",
+		argv[0]);
+}
+
+bool srs_directive_equals(SrsConfDirective* a, SrsConfDirective* b)
+{
+	if (!a || !b) {
+		return false;
+	}
+	
+	if (a->name != b->name) {
+		return false;
+	}
+	
+	if (a->args.size() != b->args.size()) {
+		return false;
+	}
+	
+	for (int i = 0; i < (int)a->args.size(); i++) {
+		if (a->args.at(i) != b->args.at(i)) {
+			return false;
+		}
+	}
+	
+	if (a->directives.size() != b->directives.size()) {
+		return false;
+	}
+	
+	for (int i = 0; i < (int)a->directives.size(); i++) {
+		SrsConfDirective* a0 = a->at(i);
+		SrsConfDirective* b0 = b->at(i);
+		
+		if (!srs_directive_equals(a0, b0)) {
+			return false;
+		}
+	}
+	
+	return true;
+}
+

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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_CONIFG_HPP
-#define SRS_CORE_CONIFG_HPP
-
-/*
-#include <srs_core_config.hpp>
-*/
-#include <srs_core.hpp>
-
-#include <vector>
-#include <string>
-
-#include <srs_core_reload.hpp>
-
-// default vhost for rtmp
-#define RTMP_VHOST_DEFAULT "__defaultVhost__"
-
-#define SRS_CONF_DEFAULT_HLS_PATH "./objs/nginx/html"
-#define SRS_CONF_DEFAULT_HLS_FRAGMENT 10
-#define SRS_CONF_DEFAULT_HLS_WINDOW 60
-// in ms, for HLS aac sync time.
-#define SRS_CONF_DEFAULT_AAC_SYNC 100
-// in ms, for HLS aac flush the audio
-#define SRS_CONF_DEFAULT_AAC_DELAY 300
-
-class SrsFileBuffer
-{
-public:
-	int fd;
-	int line;
-	// start of buffer.
-	char* start;
-	// end of buffer.
-	char* end;
-	// current consumed position.
-	char* pos;
-	// last available position.
-	char* last;
-	
-	SrsFileBuffer();
-	virtual ~SrsFileBuffer();
-	virtual int open(const char* filename);
-};
-
-class SrsConfDirective
-{
-public:
-	int conf_line;
-	std::string name;
-	std::vector<std::string> args;
-	std::vector<SrsConfDirective*> directives;
-public:
-	SrsConfDirective();
-	virtual ~SrsConfDirective();
-	std::string arg0();
-	std::string arg1();
-	std::string arg2();
-	SrsConfDirective* at(int index);
-	SrsConfDirective* get(std::string _name);
-public:
-	virtual int parse(const char* filename);
-public:
-	enum SrsDirectiveType{parse_file, parse_block};
-	virtual int parse_conf(SrsFileBuffer* buffer, SrsDirectiveType type);
-	virtual int read_token(SrsFileBuffer* buffer, std::vector<std::string>& args);
-	virtual int refill_buffer(SrsFileBuffer* buffer, bool d_quoted, bool s_quoted, int startline, char*& pstart);
-};
-
-/**
-* the config parser.
-* for the config supports reload, so never keep the reference cross st-thread,
-* that is, never save the SrsConfDirective* get by any api of config,
-* for it maybe free in the reload st-thread cycle.
-* you can keep it before st-thread switch, or simply never keep it.
-*/
-class SrsConfig
-{
-private:
-	bool show_help;
-	bool show_version;
-	std::string config_file;
-	SrsConfDirective* root;
-	std::vector<SrsReloadHandler*> subscribes;
-public:
-	SrsConfig();
-	virtual ~SrsConfig();
-public:
-	virtual int reload();
-	virtual void subscribe(SrsReloadHandler* handler);
-	virtual void unsubscribe(SrsReloadHandler* handler);
-public:
-	virtual int parse_options(int argc, char** argv);
-	virtual SrsConfDirective* get_vhost(std::string vhost);
-	virtual SrsConfDirective* get_vhost_enabled(std::string vhost);
-	virtual SrsConfDirective* get_gop_cache(std::string vhost);
-	virtual SrsConfDirective* get_forward(std::string vhost);
-	virtual SrsConfDirective* get_hls(std::string vhost);
-	virtual SrsConfDirective* get_hls_path(std::string vhost);
-	virtual SrsConfDirective* get_hls_fragment(std::string vhost);
-	virtual SrsConfDirective* get_hls_window(std::string vhost);
-	virtual SrsConfDirective* get_refer(std::string vhost);
-	virtual SrsConfDirective* get_refer_play(std::string vhost);
-	virtual SrsConfDirective* get_refer_publish(std::string vhost);
-	virtual SrsConfDirective* get_listen();
-	virtual SrsConfDirective* get_chunk_size();
-	virtual SrsConfDirective* get_pithy_print_publish();
-	virtual SrsConfDirective* get_pithy_print_play();
-private:
-	virtual int parse_file(const char* filename);
-	virtual int parse_argv(int& i, char** argv);
-	virtual void print_help(char** argv);
-};
-
-/**
-* deep compare directive.
-*/
-bool srs_directive_equals(SrsConfDirective* a, SrsConfDirective* b);
-
-// global config
-extern SrsConfig* config;
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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_CONIFG_HPP
+#define SRS_CORE_CONIFG_HPP
+
+/*
+#include <srs_core_config.hpp>
+*/
+#include <srs_core.hpp>
+
+#include <vector>
+#include <string>
+
+#include <srs_core_reload.hpp>
+
+// default vhost for rtmp
+#define RTMP_VHOST_DEFAULT "__defaultVhost__"
+
+#define SRS_CONF_DEFAULT_HLS_PATH "./objs/nginx/html"
+#define SRS_CONF_DEFAULT_HLS_FRAGMENT 10
+#define SRS_CONF_DEFAULT_HLS_WINDOW 60
+// in ms, for HLS aac sync time.
+#define SRS_CONF_DEFAULT_AAC_SYNC 100
+// in ms, for HLS aac flush the audio
+#define SRS_CONF_DEFAULT_AAC_DELAY 300
+
+class SrsFileBuffer
+{
+public:
+	int fd;
+	int line;
+	// start of buffer.
+	char* start;
+	// end of buffer.
+	char* end;
+	// current consumed position.
+	char* pos;
+	// last available position.
+	char* last;
+	
+	SrsFileBuffer();
+	virtual ~SrsFileBuffer();
+	virtual int open(const char* filename);
+};
+
+class SrsConfDirective
+{
+public:
+	int conf_line;
+	std::string name;
+	std::vector<std::string> args;
+	std::vector<SrsConfDirective*> directives;
+public:
+	SrsConfDirective();
+	virtual ~SrsConfDirective();
+	std::string arg0();
+	std::string arg1();
+	std::string arg2();
+	SrsConfDirective* at(int index);
+	SrsConfDirective* get(std::string _name);
+public:
+	virtual int parse(const char* filename);
+public:
+	enum SrsDirectiveType{parse_file, parse_block};
+	virtual int parse_conf(SrsFileBuffer* buffer, SrsDirectiveType type);
+	virtual int read_token(SrsFileBuffer* buffer, std::vector<std::string>& args);
+	virtual int refill_buffer(SrsFileBuffer* buffer, bool d_quoted, bool s_quoted, int startline, char*& pstart);
+};
+
+/**
+* the config parser.
+* for the config supports reload, so never keep the reference cross st-thread,
+* that is, never save the SrsConfDirective* get by any api of config,
+* for it maybe free in the reload st-thread cycle.
+* you can keep it before st-thread switch, or simply never keep it.
+*/
+class SrsConfig
+{
+private:
+	bool show_help;
+	bool show_version;
+	std::string config_file;
+	SrsConfDirective* root;
+	std::vector<SrsReloadHandler*> subscribes;
+public:
+	SrsConfig();
+	virtual ~SrsConfig();
+public:
+	virtual int reload();
+	virtual void subscribe(SrsReloadHandler* handler);
+	virtual void unsubscribe(SrsReloadHandler* handler);
+public:
+	virtual int parse_options(int argc, char** argv);
+	virtual SrsConfDirective* get_vhost(std::string vhost);
+	virtual SrsConfDirective* get_vhost_enabled(std::string vhost);
+	virtual SrsConfDirective* get_gop_cache(std::string vhost);
+	virtual SrsConfDirective* get_forward(std::string vhost);
+	virtual SrsConfDirective* get_hls(std::string vhost);
+	virtual SrsConfDirective* get_hls_path(std::string vhost);
+	virtual SrsConfDirective* get_hls_fragment(std::string vhost);
+	virtual SrsConfDirective* get_hls_window(std::string vhost);
+	virtual SrsConfDirective* get_refer(std::string vhost);
+	virtual SrsConfDirective* get_refer_play(std::string vhost);
+	virtual SrsConfDirective* get_refer_publish(std::string vhost);
+	virtual SrsConfDirective* get_listen();
+	virtual SrsConfDirective* get_chunk_size();
+	virtual SrsConfDirective* get_pithy_print_publish();
+	virtual SrsConfDirective* get_pithy_print_forwarder();
+	virtual SrsConfDirective* get_pithy_print_play();
+private:
+	virtual int parse_file(const char* filename);
+	virtual int parse_argv(int& i, char** argv);
+	virtual void print_help(char** argv);
+};
+
+/**
+* deep compare directive.
+*/
+bool srs_directive_equals(SrsConfDirective* a, SrsConfDirective* b);
+
+// global config
+extern SrsConfig* config;
+
 #endif
 #endif

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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_forward.hpp>
-
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-
-#include <srs_core_error.hpp>
-#include <srs_core_rtmp.hpp>
-#include <srs_core_log.hpp>
-
-#define SRS_FORWARDER_SLEEP_MS 2000
-#define SRS_SEND_TIMEOUT_US 3000000L
-#define SRS_RECV_TIMEOUT_US SRS_SEND_TIMEOUT_US
-
-SrsForwarder::SrsForwarder()
-{
-	client = NULL;
-	tid = NULL;
-	stfd = NULL;
-	loop = false;
-	stream_id = 0;
-}
-
-SrsForwarder::~SrsForwarder()
-{
-	on_unpublish();
-}
-
-int SrsForwarder::on_publish(std::string vhost, std::string _app, std::string stream, std::string forward_server)
-{
-	int ret = ERROR_SUCCESS;
-	
-	app = _app;
-	
-	tc_url = "rtmp://";
-	tc_url += vhost;
-	tc_url += "/";
-	tc_url += app;
-	
-	stream_name = stream;
-	server = forward_server;
-	port = 1935;
-	
-	size_t pos = forward_server.find(":");
-	if (pos != std::string::npos) {
-		port = ::atoi(forward_server.substr(pos + 1).c_str());
-		server = forward_server.substr(0, pos);
-	}
-	
-	if ((ret = open_socket()) != ERROR_SUCCESS) {
-		return ret;
-	}
-    
-    srs_assert(!tid);
-    if((tid = st_thread_create(forward_thread, this, 1, 0)) == NULL){
-		ret = ERROR_ST_CREATE_FORWARD_THREAD;
-        srs_error("st_thread_create failed. ret=%d", ret);
-        return ret;
-    }
-	
-	return ret;
-}
-
-void SrsForwarder::on_unpublish()
-{
-	if (tid) {
-		loop = false;
-		st_thread_interrupt(tid);
-		st_thread_join(tid, NULL);
-		tid = NULL;
-	}
-	
-	if (stfd) {
-		int fd = st_netfd_fileno(stfd);
-		st_netfd_close(stfd);
-		stfd = NULL;
-		
-		// st does not close it sometimes, 
-		// close it manually.
-		close(fd);
-	}
-	
-	srs_freep(client);
-}
-
-int SrsForwarder::on_meta_data(SrsSharedPtrMessage* metadata)
-{
-	int ret = ERROR_SUCCESS;
-	return ret;
-}
-
-int SrsForwarder::on_audio(SrsSharedPtrMessage* msg)
-{
-	int ret = ERROR_SUCCESS;
-	return ret;
-}
-
-int SrsForwarder::on_video(SrsSharedPtrMessage* msg)
-{
-	int ret = ERROR_SUCCESS;
-	return ret;
-}
-
-int SrsForwarder::open_socket()
-{
-	int ret = ERROR_SUCCESS;
-	
-	srs_trace("forward stream=%s, tcUrl=%s to server=%s, port=%d",
-		stream_name.c_str(), tc_url.c_str(), server.c_str(), port);
-
-    int sock = socket(AF_INET, SOCK_STREAM, 0);
-    if(sock == -1){
-        ret = ERROR_SOCKET_CREATE;
-        srs_error("create socket error. ret=%d", ret);
-        return ret;
-    }
-    
-    stfd = st_netfd_open_socket(sock);
-    if(stfd == NULL){
-        ret = ERROR_ST_OPEN_SOCKET;
-        srs_error("st_netfd_open_socket failed. ret=%d", ret);
-        return ret;
-    }
-
-	srs_freep(client);
-	client = new SrsRtmpClient(stfd);
-	
-	return ret;
-}
-
-int SrsForwarder::connect_server()
-{
-	int ret = ERROR_SUCCESS;
-	
-	std::string ip = parse_server(server);
-	if (ip.empty()) {
-		ret = ERROR_SYSTEM_IP_INVALID;
-		srs_error("dns resolve server error, ip empty. ret=%d", ret);
-		return ret;
-	}
-	
-    sockaddr_in addr;
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    addr.sin_addr.s_addr = inet_addr(ip.c_str());
-    
-    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT) == -1){
-        ret = ERROR_ST_CONNECT;
-        srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
-        return ret;
-    }
-    srs_trace("connect to server success. server=%s, ip=%s, port=%d", server.c_str(), ip.c_str(), port);
-    
-	return ret;
-}
-
-std::string SrsForwarder::parse_server(std::string host)
-{
-    if (inet_addr(host.c_str()) != INADDR_NONE) {
-        return host;
-    }
-    
-    hostent* answer = gethostbyname(host.c_str());
-    if (answer == NULL) {
-        srs_error("dns resolve host %s error.", host.c_str());
-        return "";
-    }
-    
-    char ipv4[16];
-    memset(ipv4, 0, sizeof(ipv4));
-    for (int i = 0; i < answer->h_length; i++) {
-        inet_ntop(AF_INET, answer->h_addr_list[i], ipv4, sizeof(ipv4));
-        srs_info("dns resolve host %s to %s.", host.c_str(), ipv4);
-        break;
-    }
-    
-    return ipv4;
-}
-
-int SrsForwarder::forward_cycle_imp()
-{
-	int ret = ERROR_SUCCESS;
-
-	client->set_recv_timeout(SRS_RECV_TIMEOUT_US);
-	client->set_send_timeout(SRS_SEND_TIMEOUT_US);
-	
-	if ((ret = connect_server()) != ERROR_SUCCESS) {
-		return ret;
-	}
-	srs_assert(client);
-	
-	if ((ret = client->handshake()) != ERROR_SUCCESS) {
-		srs_error("handshake with server failed. ret=%d", ret);
-		return ret;
-	}
-	if ((ret = client->connect_app(app, tc_url)) != ERROR_SUCCESS) {
-		srs_error("connect with server failed, tcUrl=%s. ret=%d", tc_url.c_str(), ret);
-		return ret;
-	}
-	if ((ret = client->create_stream(stream_id)) != ERROR_SUCCESS) {
-		srs_error("connect with server failed, stream_id=%d. ret=%d", stream_id, ret);
-		return ret;
-	}
-	if ((ret = client->publish(stream_name, stream_id)) != ERROR_SUCCESS) {
-		srs_error("connect with server failed, stream_name=%s, stream_id=%d. ret=%d", 
-			stream_name.c_str(), stream_id, ret);
-		return ret;
-	}
-	
-	return ret;
-}
-
-void SrsForwarder::forward_cycle()
-{
-	int ret = ERROR_SUCCESS;
-	
-	log_context->generate_id();
-	srs_trace("forward cycle start");
-	
-	while (loop) {
-		if ((ret = forward_cycle_imp()) != ERROR_SUCCESS) {
-			srs_warn("forward cycle failed, ignored and retry, ret=%d", ret);
-		} else {
-			srs_info("forward cycle success, retry");
-		}
-		
-		if (!loop) {
-			break;
-		}
-		
-		st_usleep(SRS_FORWARDER_SLEEP_MS * 1000);
-
-		if ((ret = open_socket()) != ERROR_SUCCESS) {
-			srs_warn("forward cycle reopen failed, ignored and retry, ret=%d", ret);
-		} else {
-			srs_info("forward cycle reopen success");
-		}
-	}
-	srs_trace("forward cycle finished");
-}
-
-void* SrsForwarder::forward_thread(void* arg)
-{
-	SrsForwarder* obj = (SrsForwarder*)arg;
-	srs_assert(obj != NULL);
-	
-	obj->loop = true;
-	obj->forward_cycle();
-	
-	return NULL;
-}
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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_forward.hpp>
+
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include <srs_core_error.hpp>
+#include <srs_core_rtmp.hpp>
+#include <srs_core_log.hpp>
+#include <srs_core_protocol.hpp>
+#include <srs_core_pithy_print.hpp>
+
+#define SRS_PULSE_TIMEOUT_MS 100
+#define SRS_FORWARDER_SLEEP_MS 2000
+#define SRS_SEND_TIMEOUT_US 3000000L
+#define SRS_RECV_TIMEOUT_US SRS_SEND_TIMEOUT_US
+
+SrsForwarder::SrsForwarder()
+{
+	client = NULL;
+	tid = NULL;
+	stfd = NULL;
+	loop = false;
+	stream_id = 0;
+}
+
+SrsForwarder::~SrsForwarder()
+{
+	on_unpublish();
+	
+	std::vector<SrsSharedPtrMessage*>::iterator it;
+	for (it = msgs.begin(); it != msgs.end(); ++it) {
+		SrsSharedPtrMessage* msg = *it;
+		srs_freep(msg);
+	}
+	msgs.clear();
+}
+
+int SrsForwarder::on_publish(std::string vhost, std::string _app, std::string stream, std::string forward_server)
+{
+	int ret = ERROR_SUCCESS;
+	
+	app = _app;
+	
+	tc_url = "rtmp://";
+	tc_url += vhost;
+	tc_url += "/";
+	tc_url += app;
+	
+	stream_name = stream;
+	server = forward_server;
+	port = 1935;
+	
+	size_t pos = forward_server.find(":");
+	if (pos != std::string::npos) {
+		port = ::atoi(forward_server.substr(pos + 1).c_str());
+		server = forward_server.substr(0, pos);
+	}
+	
+	if ((ret = open_socket()) != ERROR_SUCCESS) {
+		return ret;
+	}
+    
+    srs_assert(!tid);
+    if((tid = st_thread_create(forward_thread, this, 1, 0)) == NULL){
+		ret = ERROR_ST_CREATE_FORWARD_THREAD;
+        srs_error("st_thread_create failed. ret=%d", ret);
+        return ret;
+    }
+	
+	return ret;
+}
+
+void SrsForwarder::on_unpublish()
+{
+	if (tid) {
+		loop = false;
+		st_thread_interrupt(tid);
+		st_thread_join(tid, NULL);
+		tid = NULL;
+	}
+	
+	if (stfd) {
+		int fd = st_netfd_fileno(stfd);
+		st_netfd_close(stfd);
+		stfd = NULL;
+		
+		// st does not close it sometimes, 
+		// close it manually.
+		close(fd);
+	}
+	
+	srs_freep(client);
+}
+
+int SrsForwarder::on_meta_data(SrsSharedPtrMessage* metadata)
+{
+	int ret = ERROR_SUCCESS;
+	
+	msgs.push_back(metadata);
+	
+	return ret;
+}
+
+int SrsForwarder::on_audio(SrsSharedPtrMessage* msg)
+{
+	int ret = ERROR_SUCCESS;
+	
+	msgs.push_back(msg);
+	
+	return ret;
+}
+
+int SrsForwarder::on_video(SrsSharedPtrMessage* msg)
+{
+	int ret = ERROR_SUCCESS;
+	
+	msgs.push_back(msg);
+	
+	return ret;
+}
+
+int SrsForwarder::open_socket()
+{
+	int ret = ERROR_SUCCESS;
+	
+	srs_trace("forward stream=%s, tcUrl=%s to server=%s, port=%d",
+		stream_name.c_str(), tc_url.c_str(), server.c_str(), port);
+
+    int sock = socket(AF_INET, SOCK_STREAM, 0);
+    if(sock == -1){
+        ret = ERROR_SOCKET_CREATE;
+        srs_error("create socket error. ret=%d", ret);
+        return ret;
+    }
+    
+    stfd = st_netfd_open_socket(sock);
+    if(stfd == NULL){
+        ret = ERROR_ST_OPEN_SOCKET;
+        srs_error("st_netfd_open_socket failed. ret=%d", ret);
+        return ret;
+    }
+
+	srs_freep(client);
+	client = new SrsRtmpClient(stfd);
+	
+	return ret;
+}
+
+int SrsForwarder::connect_server()
+{
+	int ret = ERROR_SUCCESS;
+	
+	std::string ip = parse_server(server);
+	if (ip.empty()) {
+		ret = ERROR_SYSTEM_IP_INVALID;
+		srs_error("dns resolve server error, ip empty. ret=%d", ret);
+		return ret;
+	}
+	
+    sockaddr_in addr;
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(port);
+    addr.sin_addr.s_addr = inet_addr(ip.c_str());
+    
+    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT) == -1){
+        ret = ERROR_ST_CONNECT;
+        srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
+        return ret;
+    }
+    srs_trace("connect to server success. server=%s, ip=%s, port=%d", server.c_str(), ip.c_str(), port);
+    
+	return ret;
+}
+
+std::string SrsForwarder::parse_server(std::string host)
+{
+    if (inet_addr(host.c_str()) != INADDR_NONE) {
+        return host;
+    }
+    
+    hostent* answer = gethostbyname(host.c_str());
+    if (answer == NULL) {
+        srs_error("dns resolve host %s error.", host.c_str());
+        return "";
+    }
+    
+    char ipv4[16];
+    memset(ipv4, 0, sizeof(ipv4));
+    for (int i = 0; i < answer->h_length; i++) {
+        inet_ntop(AF_INET, answer->h_addr_list[i], ipv4, sizeof(ipv4));
+        srs_info("dns resolve host %s to %s.", host.c_str(), ipv4);
+        break;
+    }
+    
+    return ipv4;
+}
+
+int SrsForwarder::forward_cycle_imp()
+{
+	int ret = ERROR_SUCCESS;
+
+	client->set_recv_timeout(SRS_RECV_TIMEOUT_US);
+	client->set_send_timeout(SRS_SEND_TIMEOUT_US);
+	
+	if ((ret = connect_server()) != ERROR_SUCCESS) {
+		return ret;
+	}
+	srs_assert(client);
+	
+	if ((ret = client->handshake()) != ERROR_SUCCESS) {
+		srs_error("handshake with server failed. ret=%d", ret);
+		return ret;
+	}
+	if ((ret = client->connect_app(app, tc_url)) != ERROR_SUCCESS) {
+		srs_error("connect with server failed, tcUrl=%s. ret=%d", tc_url.c_str(), ret);
+		return ret;
+	}
+	if ((ret = client->create_stream(stream_id)) != ERROR_SUCCESS) {
+		srs_error("connect with server failed, stream_id=%d. ret=%d", stream_id, ret);
+		return ret;
+	}
+	if ((ret = client->publish(stream_name, stream_id)) != ERROR_SUCCESS) {
+		srs_error("connect with server failed, stream_name=%s, stream_id=%d. ret=%d", 
+			stream_name.c_str(), stream_id, ret);
+		return ret;
+	}
+	
+	if ((ret = forward()) != ERROR_SUCCESS) {
+		return ret;
+	}
+	
+	return ret;
+}
+
+int SrsForwarder::forward()
+{
+	int ret = ERROR_SUCCESS;
+	
+	client->set_recv_timeout(SRS_PULSE_TIMEOUT_MS * 1000);
+	
+	SrsPithyPrint pithy_print(SRS_STAGE_FORWARDER);
+
+	while (loop) {
+		pithy_print.elapse(SRS_PULSE_TIMEOUT_MS);
+		
+		// switch to other st-threads.
+		st_usleep(0);
+
+		// read from client.
+		if (true) {
+			SrsCommonMessage* msg = NULL;
+			ret = client->recv_message(&msg);
+			
+			srs_verbose("play loop recv message. ret=%d", ret);
+			if (ret != ERROR_SUCCESS && ret != ERROR_SOCKET_TIMEOUT) {
+				srs_error("recv server control message failed. ret=%d", ret);
+				return ret;
+			}
+		}
+		
+		int count = (int)msgs.size();
+
+		// reportable
+		if (pithy_print.can_print()) {
+			srs_trace("-> clock=%u, time=%"PRId64", msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+				(int)(srs_get_system_time_ms()/1000), pithy_print.get_age(), count, client->get_send_bytes(), client->get_recv_bytes(), client->get_send_kbps(), client->get_recv_kbps());
+		}
+	
+		// all msgs to forward.
+		for (int i = 0; i < count; i++) {
+			SrsSharedPtrMessage* msg = msgs[i];
+			msgs[i] = NULL;
+			
+			if ((ret = client->send_message(msg)) != ERROR_SUCCESS) {
+				srs_error("forwarder send message to server failed. ret=%d", ret);
+				return ret;
+			}
+		}
+		msgs.clear();
+	}
+	
+	return ret;
+}
+
+void SrsForwarder::forward_cycle()
+{
+	int ret = ERROR_SUCCESS;
+	
+	log_context->generate_id();
+	srs_trace("forward cycle start");
+	
+	while (loop) {
+		if ((ret = forward_cycle_imp()) != ERROR_SUCCESS) {
+			srs_warn("forward cycle failed, ignored and retry, ret=%d", ret);
+		} else {
+			srs_info("forward cycle success, retry");
+		}
+		
+		if (!loop) {
+			break;
+		}
+		
+		st_usleep(SRS_FORWARDER_SLEEP_MS * 1000);
+
+		if ((ret = open_socket()) != ERROR_SUCCESS) {
+			srs_warn("forward cycle reopen failed, ignored and retry, ret=%d", ret);
+		} else {
+			srs_info("forward cycle reopen success");
+		}
+	}
+	srs_trace("forward cycle finished");
+}
+
+void* SrsForwarder::forward_thread(void* arg)
+{
+	SrsForwarder* obj = (SrsForwarder*)arg;
+	srs_assert(obj != NULL);
+	
+	obj->loop = true;
+	obj->forward_cycle();
+	
+	return NULL;
+}
+

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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_FORWARD_HPP
-#define SRS_CORE_FORWARD_HPP
-
-/*
-#include <srs_core_forward.hpp>
-*/
-#include <srs_core.hpp>
-
-#include <string>
-
-#include <st.h>
-
-class SrsSharedPtrMessage;
-class SrsOnMetaDataPacket;
-class SrsRtmpClient;
-
-/**
-* forward the stream to other servers.
-*/
-class SrsForwarder
-{
-private:
-	std::string app;
-	std::string tc_url;
-	std::string stream_name;
-	int stream_id;
-	std::string server;
-	int port;
-private:
-	st_netfd_t stfd;
-	st_thread_t tid;
-	bool loop;
-private:
-	SrsRtmpClient* client;
-public:
-	SrsForwarder();
-	virtual ~SrsForwarder();
-public:
-	virtual int on_publish(std::string vhost, std::string app, std::string stream, std::string forward_server);
-	virtual void on_unpublish();
-	virtual int on_meta_data(SrsSharedPtrMessage* metadata);
-	virtual int on_audio(SrsSharedPtrMessage* msg);
-	virtual int on_video(SrsSharedPtrMessage* msg);
-private:
-	virtual int open_socket();
-	virtual int connect_server();
-	std::string parse_server(std::string host);
-private:
-	virtual int forward_cycle_imp();
-	virtual void forward_cycle();
-	static void* forward_thread(void* arg);
-};
-
-#endif
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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_FORWARD_HPP
+#define SRS_CORE_FORWARD_HPP
+
+/*
+#include <srs_core_forward.hpp>
+*/
+#include <srs_core.hpp>
+
+#include <string>
+#include <vector>
+
+#include <st.h>
+
+class SrsSharedPtrMessage;
+class SrsOnMetaDataPacket;
+class SrsRtmpClient;
+
+/**
+* forward the stream to other servers.
+*/
+class SrsForwarder
+{
+private:
+	std::string app;
+	std::string tc_url;
+	std::string stream_name;
+	int stream_id;
+	std::string server;
+	int port;
+private:
+	st_netfd_t stfd;
+	st_thread_t tid;
+	bool loop;
+private:
+	SrsRtmpClient* client;
+	std::vector<SrsSharedPtrMessage*> msgs;
+public:
+	SrsForwarder();
+	virtual ~SrsForwarder();
+public:
+	virtual int on_publish(std::string vhost, std::string app, std::string stream, std::string forward_server);
+	virtual void on_unpublish();
+	virtual int on_meta_data(SrsSharedPtrMessage* metadata);
+	virtual int on_audio(SrsSharedPtrMessage* msg);
+	virtual int on_video(SrsSharedPtrMessage* msg);
+private:
+	virtual int open_socket();
+	virtual int connect_server();
+	std::string parse_server(std::string host);
+private:
+	virtual int forward_cycle_imp();
+	virtual int forward();
+	virtual void forward_cycle();
+	static void* forward_thread(void* arg);
+};
+
+#endif

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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_pithy_print.hpp>
-
-#include <stdlib.h>
-#include <map>
-
-#include <srs_core_log.hpp>
-#include <srs_core_config.hpp>
-#include <srs_core_reload.hpp>
-#include <srs_core_error.hpp>
-
-#define SRS_STAGE_DEFAULT_INTERVAL_MS 1200
-#define SRS_STAGE_PLAY_USER_INTERVAL_MS 1300
-#define SRS_STAGE_PUBLISH_USER_INTERVAL_MS 1100
-
-struct SrsStageInfo : public SrsReloadHandler
-{
-	int stage_id;
-	int pithy_print_time_ms;
-	int nb_clients;
-	
-	SrsStageInfo(int _stage_id)
-	{
-		stage_id = _stage_id;
-		nb_clients = 0;
-		
-		update_print_time();
-		
-		config->subscribe(this);
-	}
-	virtual ~SrsStageInfo()
-	{
-		config->unsubscribe(this);
-	}
-	void update_print_time()
-	{
-		switch (stage_id) {
-			case SRS_STAGE_PLAY_USER: {
-				pithy_print_time_ms = SRS_STAGE_PLAY_USER_INTERVAL_MS;
-				SrsConfDirective* conf = config->get_pithy_print_play();
-				if (conf && !conf->arg0().empty()) {
-					pithy_print_time_ms = ::atoi(conf->arg0().c_str());
-				}
-				break;
-			}
-			case SRS_STAGE_PUBLISH_USER: {
-				pithy_print_time_ms = SRS_STAGE_PUBLISH_USER_INTERVAL_MS;
-				SrsConfDirective* conf = config->get_pithy_print_publish();
-				if (conf && !conf->arg0().empty()) {
-					pithy_print_time_ms = ::atoi(conf->arg0().c_str());
-				}
-				break;
-			}
-			default: {
-				pithy_print_time_ms = SRS_STAGE_DEFAULT_INTERVAL_MS;
-				break;
-			}
-		}
-	}
-public:
-	virtual int on_reload_pithy_print()
-	{
-		update_print_time();
-		return ERROR_SUCCESS;
-	}
-};
-static std::map<int, SrsStageInfo*> _srs_stages;
-
-SrsPithyPrint::SrsPithyPrint(int _stage_id)
-{
-	stage_id = _stage_id;
-	client_id = enter_stage();
-	printed_age = age = 0;
-}
-
-SrsPithyPrint::~SrsPithyPrint()
-{
-	leave_stage();
-}
-
-int SrsPithyPrint::enter_stage()
-{
-	SrsStageInfo* stage = NULL;
-	
-	std::map<int, SrsStageInfo*>::iterator it = _srs_stages.find(stage_id);
-	if (it == _srs_stages.end()) {
-		stage = _srs_stages[stage_id] = new SrsStageInfo(stage_id);
-	} else {
-		stage = it->second;
-	}
-	
-	srs_assert(stage != NULL);
-	client_id = stage->nb_clients++;
-
-	srs_verbose("enter stage, stage_id=%d, client_id=%d, nb_clients=%d, time_ms=%d",
-		stage->stage_id, client_id, stage->nb_clients, stage->pithy_print_time_ms);
-	
-	return client_id;
-}
-
-void SrsPithyPrint::leave_stage()
-{
-	SrsStageInfo* stage = _srs_stages[stage_id];
-	srs_assert(stage != NULL);
-	
-	stage->nb_clients--;
-
-	srs_verbose("leave stage, stage_id=%d, client_id=%d, nb_clients=%d, time_ms=%d",
-		stage->stage_id, client_id, stage->nb_clients, stage->pithy_print_time_ms);
-}
-
-void SrsPithyPrint::elapse(int64_t time_ms)
-{
-	age += time_ms;
-}
-
-bool SrsPithyPrint::can_print()
-{
-	SrsStageInfo* stage = _srs_stages[stage_id];
-	srs_assert(stage != NULL);
-	
-	int64_t alive_age = age - printed_age;
-	int64_t can_print_age = stage->nb_clients * stage->pithy_print_time_ms;
-	
-	bool can_print = alive_age >= can_print_age;
-	if (can_print) {
-		printed_age = age;
-	}
-	
-	return can_print;
-}
-
-int64_t SrsPithyPrint::get_age()
-{
-	return age;
-}
-
-void SrsPithyPrint::set_age(int64_t _age)
-{
-	age = _age;
-}
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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_pithy_print.hpp>
+
+#include <stdlib.h>
+#include <map>
+
+#include <srs_core_log.hpp>
+#include <srs_core_config.hpp>
+#include <srs_core_reload.hpp>
+#include <srs_core_error.hpp>
+
+#define SRS_STAGE_DEFAULT_INTERVAL_MS 1200
+#define SRS_STAGE_PLAY_USER_INTERVAL_MS 1300
+#define SRS_STAGE_PUBLISH_USER_INTERVAL_MS 1100
+#define SRS_STAGE_FORWARDER_INTERVAL_MS 2000
+
+struct SrsStageInfo : public SrsReloadHandler
+{
+	int stage_id;
+	int pithy_print_time_ms;
+	int nb_clients;
+	
+	SrsStageInfo(int _stage_id)
+	{
+		stage_id = _stage_id;
+		nb_clients = 0;
+		
+		update_print_time();
+		
+		config->subscribe(this);
+	}
+	virtual ~SrsStageInfo()
+	{
+		config->unsubscribe(this);
+	}
+	void update_print_time()
+	{
+		switch (stage_id) {
+			case SRS_STAGE_PLAY_USER: {
+				pithy_print_time_ms = SRS_STAGE_PLAY_USER_INTERVAL_MS;
+				SrsConfDirective* conf = config->get_pithy_print_play();
+				if (conf && !conf->arg0().empty()) {
+					pithy_print_time_ms = ::atoi(conf->arg0().c_str());
+				}
+				break;
+			}
+			case SRS_STAGE_PUBLISH_USER: {
+				pithy_print_time_ms = SRS_STAGE_PUBLISH_USER_INTERVAL_MS;
+				SrsConfDirective* conf = config->get_pithy_print_publish();
+				if (conf && !conf->arg0().empty()) {
+					pithy_print_time_ms = ::atoi(conf->arg0().c_str());
+				}
+				break;
+			}
+			case SRS_STAGE_FORWARDER: {
+				pithy_print_time_ms = SRS_STAGE_FORWARDER_INTERVAL_MS;
+				SrsConfDirective* conf = config->get_pithy_print_forwarder();
+				if (conf && !conf->arg0().empty()) {
+					pithy_print_time_ms = ::atoi(conf->arg0().c_str());
+				}
+				break;
+			}
+			default: {
+				pithy_print_time_ms = SRS_STAGE_DEFAULT_INTERVAL_MS;
+				break;
+			}
+		}
+	}
+public:
+	virtual int on_reload_pithy_print()
+	{
+		update_print_time();
+		return ERROR_SUCCESS;
+	}
+};
+static std::map<int, SrsStageInfo*> _srs_stages;
+
+SrsPithyPrint::SrsPithyPrint(int _stage_id)
+{
+	stage_id = _stage_id;
+	client_id = enter_stage();
+	printed_age = age = 0;
+}
+
+SrsPithyPrint::~SrsPithyPrint()
+{
+	leave_stage();
+}
+
+int SrsPithyPrint::enter_stage()
+{
+	SrsStageInfo* stage = NULL;
+	
+	std::map<int, SrsStageInfo*>::iterator it = _srs_stages.find(stage_id);
+	if (it == _srs_stages.end()) {
+		stage = _srs_stages[stage_id] = new SrsStageInfo(stage_id);
+	} else {
+		stage = it->second;
+	}
+	
+	srs_assert(stage != NULL);
+	client_id = stage->nb_clients++;
+
+	srs_verbose("enter stage, stage_id=%d, client_id=%d, nb_clients=%d, time_ms=%d",
+		stage->stage_id, client_id, stage->nb_clients, stage->pithy_print_time_ms);
+	
+	return client_id;
+}
+
+void SrsPithyPrint::leave_stage()
+{
+	SrsStageInfo* stage = _srs_stages[stage_id];
+	srs_assert(stage != NULL);
+	
+	stage->nb_clients--;
+
+	srs_verbose("leave stage, stage_id=%d, client_id=%d, nb_clients=%d, time_ms=%d",
+		stage->stage_id, client_id, stage->nb_clients, stage->pithy_print_time_ms);
+}
+
+void SrsPithyPrint::elapse(int64_t time_ms)
+{
+	age += time_ms;
+}
+
+bool SrsPithyPrint::can_print()
+{
+	SrsStageInfo* stage = _srs_stages[stage_id];
+	srs_assert(stage != NULL);
+	
+	int64_t alive_age = age - printed_age;
+	int64_t can_print_age = stage->nb_clients * stage->pithy_print_time_ms;
+	
+	bool can_print = alive_age >= can_print_age;
+	if (can_print) {
+		printed_age = age;
+	}
+	
+	return can_print;
+}
+
+int64_t SrsPithyPrint::get_age()
+{
+	return age;
+}
+
+void SrsPithyPrint::set_age(int64_t _age)
+{
+	age = _age;
+}
+

-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 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_PITHY_PRINT_HPP
-#define SRS_CORE_PITHY_PRINT_HPP
-
-/*
-#include <srs_core_pithy_print.hpp>
-*/
-
-#include <srs_core.hpp>
-
-// the pithy stage for all play clients.
-#define SRS_STAGE_PLAY_USER 1
-// the pithy stage for all publish clients.
-#define SRS_STAGE_PUBLISH_USER 2
-
-/**
-* the stage is used for a collection of object to do print,
-* the print time in a stage is constant and not changed.
-* for example, stage #1 for all play clients, print time is 3s,
-* if there is 10clients, then all clients should print in 10*3s.
-*/
-class SrsPithyPrint
-{
-private:
-	int client_id;
-	int stage_id;
-	int64_t age;
-	int64_t printed_age;
-public:
-	/**
-	* @param _stage_id defined in SRS_STAGE_xxx, eg. SRS_STAGE_PLAY_USER.
-	*/
-	SrsPithyPrint(int _stage_id);
-	virtual ~SrsPithyPrint();
-private:
-	/**
-	* enter the specified stage, return the client id.
-	*/
-	virtual int enter_stage();
-	/**
-	* leave the specified stage, release the client id.
-	*/
-	virtual void leave_stage();
-public:
-	/**
-	* specified client elapse some time.
-	*/
-	virtual void elapse(int64_t time_ms);
-	/**
-	* whether current client can print.
-	*/
-	virtual bool can_print();
-	/**
-	* get the elapsed time in ms.
-	*/
-	virtual int64_t get_age();
-	virtual void set_age(int64_t _age);
-};
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 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_PITHY_PRINT_HPP
+#define SRS_CORE_PITHY_PRINT_HPP
+
+/*
+#include <srs_core_pithy_print.hpp>
+*/
+
+#include <srs_core.hpp>
+
+// the pithy stage for all play clients.
+#define SRS_STAGE_PLAY_USER 1
+// the pithy stage for all publish clients.
+#define SRS_STAGE_PUBLISH_USER 2
+// the pithy stage for all forward clients.
+#define SRS_STAGE_FORWARDER 3
+
+/**
+* the stage is used for a collection of object to do print,
+* the print time in a stage is constant and not changed.
+* for example, stage #1 for all play clients, print time is 3s,
+* if there is 10clients, then all clients should print in 10*3s.
+*/
+class SrsPithyPrint
+{
+private:
+	int client_id;
+	int stage_id;
+	int64_t age;
+	int64_t printed_age;
+public:
+	/**
+	* @param _stage_id defined in SRS_STAGE_xxx, eg. SRS_STAGE_PLAY_USER.
+	*/
+	SrsPithyPrint(int _stage_id);
+	virtual ~SrsPithyPrint();
+private:
+	/**
+	* enter the specified stage, return the client id.
+	*/
+	virtual int enter_stage();
+	/**
+	* leave the specified stage, release the client id.
+	*/
+	virtual void leave_stage();
+public:
+	/**
+	* specified client elapse some time.
+	*/
+	virtual void elapse(int64_t time_ms);
+	/**
+	* whether current client can print.
+	*/
+	virtual bool can_print();
+	/**
+	* get the elapsed time in ms.
+	*/
+	virtual int64_t get_age();
+	virtual void set_age(int64_t _age);
+};
+
 #endif
 #endif