use the right int type for port.

@@ -360,19 +360,17 @@ int SrsEdgeIngester::connect_server(string& ep_server, int& ep_port)
     }
     
     // select the origin.
-    std::string server = lb->select(conf->args);
-    int port = ::atoi(SRS_CONSTS_RTMP_DEFAULT_PORT);
-    srs_parse_hostport(server, server, port);
-    
-    // output the connected server and port.
-    ep_server = server;
-    ep_port = port;
+    if (true) {
+        std::string server = lb->select(conf->args);
+        ep_port = SRS_CONSTS_RTMP_DEFAULT_PORT;
+        srs_parse_hostport(server, ep_server, ep_port);
+    }
     
     // open socket.
     int64_t timeout = SRS_EDGE_INGESTER_TIMEOUT_US;
-    if ((ret = srs_socket_connect(server, port, timeout, &stfd)) != ERROR_SUCCESS) {
+    if ((ret = srs_socket_connect(ep_server, ep_port, timeout, &stfd)) != ERROR_SUCCESS) {
         srs_warn("edge pull failed, stream=%s, tcUrl=%s to server=%s, port=%d, timeout=%"PRId64", ret=%d",
-            _req->stream.c_str(), _req->tcUrl.c_str(), server.c_str(), port, timeout, ret);
+            _req->stream.c_str(), _req->tcUrl.c_str(), ep_server.c_str(), ep_port, timeout, ret);
         return ret;
     }
     
@@ -386,7 +384,7 @@ int SrsEdgeIngester::connect_server(string& ep_server, int& ep_port)
     kbps->set_io(io, io);
     
     srs_trace("edge pull connected, url=%s/%s, server=%s:%d",
-        _req->tcUrl.c_str(), _req->stream.c_str(), server.c_str(), port);
+        _req->tcUrl.c_str(), _req->stream.c_str(), ep_server.c_str(), ep_port);
     
     return ret;
 }
@@ -398,7 +396,7 @@ SrsEdgeForwarder::SrsEdgeForwarder()
     client = NULL;
     _edge = NULL;
     _req = NULL;
-    origin_index = 0;
+    lb = new SrsLbRoundRobin();
     stream_id = 0;
     stfd = NULL;
     pthread = new SrsReusableThread2("edge-fwr", this, SRS_EDGE_FORWARDER_SLEEP_US);
@@ -410,6 +408,7 @@ SrsEdgeForwarder::~SrsEdgeForwarder()
 {
     stop();
     
+    srs_freep(lb);
     srs_freep(pthread);
     srs_freep(queue);
     srs_freep(kbps);
@@ -437,7 +436,8 @@ int SrsEdgeForwarder::start()
     
     send_error_code = ERROR_SUCCESS;
     
-    std::string ep_server, ep_port;
+    std::string ep_server;
+    int ep_port;
     if ((ret = connect_server(ep_server, ep_port)) != ERROR_SUCCESS) {
         return ret;
     }
@@ -591,7 +591,7 @@ void SrsEdgeForwarder::close_underlayer_socket()
     srs_close_stfd(stfd);
 }
 
-int SrsEdgeForwarder::connect_server(string& ep_server, string& ep_port)
+int SrsEdgeForwarder::connect_server(string& ep_server, int& ep_port)
 {
     int ret = ERROR_SUCCESS;
     
@@ -602,27 +602,17 @@ int SrsEdgeForwarder::connect_server(string& ep_server, string& ep_port)
     srs_assert(conf);
     
     // select the origin.
-    std::string server = conf->args.at(origin_index % conf->args.size());
-    origin_index = (origin_index + 1) % conf->args.size();
-    
-    std::string s_port = SRS_CONSTS_RTMP_DEFAULT_PORT;
-    int port = ::atoi(SRS_CONSTS_RTMP_DEFAULT_PORT);
-    size_t pos = server.find(":");
-    if (pos != std::string::npos) {
-        s_port = server.substr(pos + 1);
-        server = server.substr(0, pos);
-        port = ::atoi(s_port.c_str());
+    if (true) {
+        std::string server = lb->select(conf->args);
+        ep_port = SRS_CONSTS_RTMP_DEFAULT_PORT;
+        srs_parse_hostport(server, ep_server, ep_port);
     }
     
-    // output the connected server and port.
-    ep_server = server;
-    ep_port = s_port;
-    
     // open socket.
     int64_t timeout = SRS_EDGE_FORWARDER_TIMEOUT_US;
-    if ((ret = srs_socket_connect(server, port, timeout, &stfd)) != ERROR_SUCCESS) {
+    if ((ret = srs_socket_connect(ep_server, ep_port, timeout, &stfd)) != ERROR_SUCCESS) {
         srs_warn("edge push failed, stream=%s, tcUrl=%s to server=%s, port=%d, timeout=%"PRId64", ret=%d",
-            _req->stream.c_str(), _req->tcUrl.c_str(), server.c_str(), port, timeout, ret);
+            _req->stream.c_str(), _req->tcUrl.c_str(), ep_server.c_str(), ep_port, timeout, ret);
         return ret;
     }
     
@@ -637,13 +627,13 @@ int SrsEdgeForwarder::connect_server(string& ep_server, string& ep_port)
     
     // open socket.
     srs_trace("edge push connected, stream=%s, tcUrl=%s to server=%s, port=%d",
-        _req->stream.c_str(), _req->tcUrl.c_str(), server.c_str(), port);
+        _req->stream.c_str(), _req->tcUrl.c_str(), ep_server.c_str(), ep_port);
     
     return ret;
 }
 
 // TODO: FIXME: refine the connect_app.
-int SrsEdgeForwarder::connect_app(string ep_server, string ep_port)
+int SrsEdgeForwarder::connect_app(string ep_server, int ep_port)
 {
     int ret = ERROR_SUCCESS;
     
@@ -685,7 +675,7 @@ int SrsEdgeForwarder::connect_app(string ep_server, string ep_port)
     // generate the tcUrl
     std::string param = "";
     std::string tc_url = srs_generate_tc_url(ep_server, vhost, req->app, ep_port, param);
-    srs_trace("edge forward to %s:%s at %s", ep_server.c_str(), ep_port.c_str(), tc_url.c_str());
+    srs_trace("edge forward to %s:%d at %s", ep_server.c_str(), ep_port, tc_url.c_str());
     
     // replace the tcUrl in request,
     // which will replace the tc_url in client.connect_app().

@@ -125,7 +125,7 @@ private:
     ISrsProtocolReaderWriter* io;
     SrsKbps* kbps;
     SrsRtmpClient* client;
-    int origin_index;
+    SrsLbRoundRobin* lb;
     /**
     * we must ensure one thread one fd principle,
     * that is, a fd must be write/read by the one thread.
@@ -153,8 +153,8 @@ public:
     virtual int proxy(SrsCommonMessage* msg);
 private:
     virtual void close_underlayer_socket();
-    virtual int connect_server(std::string& ep_server, std::string& ep_port);
-    virtual int connect_app(std::string ep_server, std::string ep_port);
+    virtual int connect_server(std::string& ep_server, int& ep_port);
+    virtual int connect_app(std::string ep_server, int ep_port);
 };
 
 /**

@@ -281,7 +281,7 @@ int SrsEncoder::initialize_ffmpeg(SrsFFMPEG* ffmpeg, SrsRequest* req, SrsConfDir
     // output stream, to other/self server
     // ie. rtmp://localhost:1935/live/livestream_sd
     output = srs_string_replace(output, "[vhost]", req->vhost);
-    output = srs_string_replace(output, "[port]", req->port);
+    output = srs_string_replace(output, "[port]", srs_int2str(req->port));
     output = srs_string_replace(output, "[app]", req->app);
     output = srs_string_replace(output, "[stream]", req->stream);
     output = srs_string_replace(output, "[engine]", engine->arg0());

@@ -44,6 +44,7 @@ using namespace std;
 #include <srs_protocol_amf0.hpp>
 #include <srs_kernel_codec.hpp>
 #include <srs_core_autofree.hpp>
+#include <srs_kernel_utility.hpp>
 
 // when error, forwarder sleep for a while and retry.
 #define SRS_FORWARDER_SLEEP_US (int64_t)(3*1000*1000LL)
@@ -105,7 +106,8 @@ int SrsForwarder::on_publish()
     SrsRequest* req = _req;
     
     // discovery the server port and tcUrl from req and ep_forward.
-    std::string server, port, tc_url;
+    int port;
+    std::string server, tc_url;
     discovery_ep(server, port, tc_url);
     
     // dead loop check
@@ -228,7 +230,8 @@ int SrsForwarder::cycle()
 {
     int ret = ERROR_SUCCESS;
     
-    std::string ep_server, ep_port;
+    std::string ep_server;
+    int ep_port;
     if ((ret = connect_server(ep_server, ep_port)) != ERROR_SUCCESS) {
         return ret;
     }
@@ -273,25 +276,18 @@ void SrsForwarder::close_underlayer_socket()
     srs_close_stfd(stfd);
 }
 
-void SrsForwarder::discovery_ep(string& server, string& port, string& tc_url)
+void SrsForwarder::discovery_ep(string& server, int& port, string& tc_url)
 {
     SrsRequest* req = _req;
     
-    server = _ep_forward;
     port = SRS_CONSTS_RTMP_DEFAULT_PORT;
-    
-    // TODO: FIXME: parse complex params
-    size_t pos = _ep_forward.find(":");
-    if (pos != std::string::npos) {
-        port = _ep_forward.substr(pos + 1);
-        server = _ep_forward.substr(0, pos);
-    }
+    srs_parse_hostport(_ep_forward, server, port);
     
     // generate tcUrl
     tc_url = srs_generate_tc_url(server, req->vhost, req->app, port, req->param);
 }
 
-int SrsForwarder::connect_server(string& ep_server, string& ep_port)
+int SrsForwarder::connect_server(string& ep_server, int& ep_port)
 {
     int ret = ERROR_SUCCESS;
     
@@ -299,19 +295,14 @@ int SrsForwarder::connect_server(string& ep_server, string& ep_port)
     close_underlayer_socket();
     
     // discovery the server port and tcUrl from req and ep_forward.
-    std::string server, s_port, tc_url;
-    discovery_ep(server, s_port, tc_url);
-    int port = ::atoi(s_port.c_str());
-    
-    // output the connected server and port.
-    ep_server = server;
-    ep_port = s_port;
+    string tc_url;
+    discovery_ep(ep_server, ep_port, tc_url);
     
     // open socket.
     int64_t timeout = SRS_FORWARDER_SLEEP_US;
-    if ((ret = srs_socket_connect(ep_server, port, timeout, &stfd)) != ERROR_SUCCESS) {
+    if ((ret = srs_socket_connect(ep_server, ep_port, timeout, &stfd)) != ERROR_SUCCESS) {
         srs_warn("forward failed, stream=%s, tcUrl=%s to server=%s, port=%d, timeout=%"PRId64", ret=%d",
-            _req->stream.c_str(), _req->tcUrl.c_str(), server.c_str(), port, timeout, ret);
+            _req->stream.c_str(), _req->tcUrl.c_str(), ep_server.c_str(), ep_port, timeout, ret);
         return ret;
     }
     
@@ -325,13 +316,13 @@ int SrsForwarder::connect_server(string& ep_server, string& ep_port)
     kbps->set_io(io, io);
     
     srs_trace("forward connected, stream=%s, tcUrl=%s to server=%s, port=%d",
-        _req->stream.c_str(), _req->tcUrl.c_str(), server.c_str(), port);
+        _req->stream.c_str(), _req->tcUrl.c_str(), ep_server.c_str(), ep_port);
     
     return ret;
 }
 
 // TODO: FIXME: refine the connect_app.
-int SrsForwarder::connect_app(string ep_server, string ep_port)
+int SrsForwarder::connect_app(string ep_server, int ep_port)
 {
     int ret = ERROR_SUCCESS;
     

@@ -100,9 +100,9 @@ public:
     virtual int cycle();
 private:
     virtual void close_underlayer_socket();
-    virtual void discovery_ep(std::string& server, std::string& port, std::string& tc_url);
-    virtual int connect_server(std::string& ep_server, std::string& ep_port);
-    virtual int connect_app(std::string ep_server, std::string ep_port);
+    virtual void discovery_ep(std::string& server, int& port, std::string& tc_url);
+    virtual int connect_server(std::string& ep_server, int& ep_port);
+    virtual int connect_app(std::string ep_server, int ep_port);
     virtual int forward();
 };
 

@@ -332,13 +332,13 @@ int SrsIngester::initialize_ffmpeg(SrsFFMPEG* ffmpeg, SrsConfDirective* vhost, S
 {
     int ret = ERROR_SUCCESS;
     
-    std::string port;
+    int port;
     if (true) {
         std::vector<std::string> ip_ports = _srs_config->get_listens();
         srs_assert(ip_ports.size() > 0);
         
-        std::string ep = ip_ports[0];
         std::string ip;
+        std::string ep = ip_ports[0];
         srs_parse_endpoint(ep, ip, port);
     }
     
@@ -346,7 +346,7 @@ int SrsIngester::initialize_ffmpeg(SrsFFMPEG* ffmpeg, SrsConfDirective* vhost, S
     // output stream, to other/self server
     // ie. rtmp://localhost:1935/live/livestream_sd
     output = srs_string_replace(output, "[vhost]", vhost->arg0());
-    output = srs_string_replace(output, "[port]", port);
+    output = srs_string_replace(output, "[port]", srs_int2str(port));
     if (output.empty()) {
         ret = ERROR_ENCODER_NO_OUTPUT;
         srs_trace("empty output url, ingest=%s. ret=%d", ingest->arg0().c_str(), ret);

@@ -198,7 +198,7 @@ string SrsNgExec::parse(SrsRequest* req, string tmpl)
     string output = tmpl;
     
     output = srs_string_replace(output, "[vhost]", req->vhost);
-    output = srs_string_replace(output, "[port]", req->port);
+    output = srs_string_replace(output, "[port]", srs_int2str(req->port));
     output = srs_string_replace(output, "[app]", req->app);
     output = srs_string_replace(output, "[stream]", req->stream);
     
@@ -207,7 +207,7 @@ string SrsNgExec::parse(SrsRequest* req, string tmpl)
     output = srs_string_replace(output, "[pageUrl]", req->pageUrl);
     
     if (output.find("[url]") != string::npos) {
-        string url = srs_generate_rtmp_url(req->host, ::atoi(req->port.c_str()), req->vhost, req->app, req->stream);
+        string url = srs_generate_rtmp_url(req->host, req->port, req->vhost, req->app, req->stream);
         output = srs_string_replace(output, "[url]", url);
     }
     

@@ -159,11 +159,11 @@ int SrsRtmpConn::do_cycle()
     srs_info("discovery app success. schema=%s, vhost=%s, port=%s, app=%s",
         req->schema.c_str(), req->vhost.c_str(), req->port.c_str(), req->app.c_str());
     
-    if (req->schema.empty() || req->vhost.empty() || req->port.empty() || req->app.empty()) {
+    if (req->schema.empty() || req->vhost.empty() || req->app.empty()) {
         ret = ERROR_RTMP_REQ_TCURL;
         srs_error("discovery tcUrl failed. "
-            "tcUrl=%s, schema=%s, vhost=%s, port=%s, app=%s, ret=%d",
-            req->tcUrl.c_str(), req->schema.c_str(), req->vhost.c_str(), req->port.c_str(), req->app.c_str(), ret);
+            "tcUrl=%s, schema=%s, vhost=%s, port=%d, app=%s, ret=%d",
+            req->tcUrl.c_str(), req->schema.c_str(), req->vhost.c_str(), req->port, req->app.c_str(), ret);
         return ret;
     }
     
@@ -175,9 +175,9 @@ int SrsRtmpConn::do_cycle()
     srs_verbose("check vhost success.");
     
     srs_trace("connect app, "
-        "tcUrl=%s, pageUrl=%s, swfUrl=%s, schema=%s, vhost=%s, port=%s, app=%s, args=%s", 
+        "tcUrl=%s, pageUrl=%s, swfUrl=%s, schema=%s, vhost=%s, port=%d, app=%s, args=%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->schema.c_str(), req->vhost.c_str(), req->port,
         req->app.c_str(), (req->args? "(obj)":"null"));
     
     // show client identity
@@ -1230,9 +1230,10 @@ int SrsRtmpConn::check_edge_token_traverse_auth()
     srs_assert(req);
     
     st_netfd_t stsock = NULL;
-    SrsConfDirective* conf = _srs_config->get_vhost_edge_origin(req->vhost);
-    for (int i = 0; i < (int)conf->args.size(); i++) {
-        if ((ret = connect_server(i, &stsock)) == ERROR_SUCCESS) {
+    vector<string> args = _srs_config->get_vhost_edge_origin(req->vhost)->args;
+    for (int i = 0; i < (int)args.size(); i++) {
+        string hostport = args.at(i);
+        if ((ret = connect_server(hostport, &stsock)) == ERROR_SUCCESS) {
             break;
         }
     }
@@ -1254,7 +1255,7 @@ int SrsRtmpConn::check_edge_token_traverse_auth()
     return ret;
 }
 
-int SrsRtmpConn::connect_server(int origin_index, st_netfd_t* pstsock)
+int SrsRtmpConn::connect_server(string hostport, st_netfd_t* pstsock)
 {
     int ret = ERROR_SUCCESS;
     
@@ -1262,17 +1263,9 @@ int SrsRtmpConn::connect_server(int origin_index, st_netfd_t* pstsock)
     srs_assert(conf);
     
     // select the origin.
-    std::string server = conf->args.at(origin_index % conf->args.size());
-    origin_index = (origin_index + 1) % conf->args.size();
-    
-    std::string s_port = SRS_CONSTS_RTMP_DEFAULT_PORT;
-    int port = ::atoi(SRS_CONSTS_RTMP_DEFAULT_PORT);
-    size_t pos = server.find(":");
-    if (pos != std::string::npos) {
-        s_port = server.substr(pos + 1);
-        server = server.substr(0, pos);
-        port = ::atoi(s_port.c_str());
-    }
+    string server;
+    int port = SRS_CONSTS_RTMP_DEFAULT_PORT;
+    srs_parse_hostport(hostport, server, port);
     
     // open socket.
     st_netfd_t stsock = NULL;

@@ -30,6 +30,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_core.hpp>
 
+#include <string>
+
 #include <srs_app_st.hpp>
 #include <srs_app_conn.hpp>
 #include <srs_app_reload.hpp>
@@ -132,7 +134,7 @@ private:
     virtual void set_sock_options();
 private:
     virtual int check_edge_token_traverse_auth();
-    virtual int connect_server(int origin_index, st_netfd_t* pstsock);
+    virtual int connect_server(std::string hostport, st_netfd_t* pstsock);
     virtual int do_token_traverse_auth(SrsRtmpClient* client);
     /**
      * when the connection disconnect, call this method.

@@ -205,29 +205,6 @@ string srs_path_build_timestamp(string template_path)
     return path;
 }
 
-void srs_parse_endpoint(string ip_port, string& ip, string& port)
-{
-    ip = "0.0.0.0";
-    port = ip_port;
-    
-    size_t pos = string::npos;
-    if ((pos = port.find(":")) != string::npos) {
-        ip = port.substr(0, pos);
-        port = port.substr(pos + 1);
-    }
-}
-
-void srs_parse_endpoint(string ip_port, string& ip, int& port)
-{
-    std::string the_port;
-    srs_parse_endpoint(ip_port, ip, the_port);
-    port = ::atoi(the_port.c_str());
-}
-
-string srs_bool2switch(bool v) {
-    return v? "on" : "off";
-}
-
 int srs_kill_forced(int& pid)
 {
     int ret = ERROR_SUCCESS;

@@ -76,18 +76,6 @@ extern std::string srs_path_build_stream(std::string template_path, std::string
 extern std::string srs_path_build_timestamp(std::string template_path);
 
 /**
-* parse the endpoint to ip and port.
-* @param ip_port the ip and port which formats in <[ip:]port>
- */
-extern void srs_parse_endpoint(std::string ip_port, std::string& ip, std::string& port);
-extern void srs_parse_endpoint(std::string ip_port, std::string& ip, int& port);
-
-/**
- * convert bool to switch value, true to "on", false to "off".
- */
-extern std::string srs_bool2switch(bool v);
-
-/**
  * kill the pid by SIGINT, then wait to quit,
  * kill the pid by SIGKILL again when exceed the timeout.
  * @param pid the pid to kill. ignore for -1. set to -1 when killed.

@@ -44,7 +44,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define SRS_CONSTS_RTMP_DEFAULT_VHOST "__defaultVhost__"
 #define SRS_CONSTS_RTMP_DEFAULT_APP "__defaultApp__"
 // default port of rtmp
-#define SRS_CONSTS_RTMP_DEFAULT_PORT "1935"
+#define SRS_CONSTS_RTMP_DEFAULT_PORT 1935
 
 // the default chunk size for system.
 #define SRS_CONSTS_RTMP_SRS_CHUNK_SIZE 60000

@@ -180,13 +180,27 @@ string srs_dns_resolve(string host)
 
 void srs_parse_hostport(const string& hostport, string& host, int& port)
 {
-    host = hostport;
-    
     size_t pos = hostport.find(":");
     if (pos != std::string::npos) {
         string p = hostport.substr(pos + 1);
         host = hostport.substr(0, pos);
         port = ::atoi(p.c_str());
+    } else {
+        host = hostport;
+    }
+}
+
+void srs_parse_endpoint(string hostport, string& ip, int& port)
+{
+    ip = "0.0.0.0";
+    
+    size_t pos = string::npos;
+    if ((pos = hostport.find(":")) != string::npos) {
+        ip = hostport.substr(0, pos);
+        string sport = hostport.substr(pos + 1);
+        port = ::atoi(sport.c_str());
+    } else {
+        port = ::atoi(hostport.c_str());
     }
 }
 
@@ -206,6 +220,10 @@ string srs_float2str(double value)
     return tmp;
 }
 
+string srs_bool2switch(bool v) {
+    return v? "on" : "off";
+}
+
 bool srs_is_little_endian()
 {
     // convert to network(big-endian) order, if not equals, 

@@ -52,13 +52,21 @@ extern int64_t srs_update_system_time_ms();
 
 // dns resolve utility, return the resolved ip address.
 extern std::string srs_dns_resolve(std::string host);
+
 // split the host:port to host and port.
+// @remark the hostport format in <host[:port]>, where port is optional.
 extern void srs_parse_hostport(const std::string& hostport, std::string& host, int& port);
 
+// parse the endpoint to ip and port.
+// @remark hostport format in <[ip:]port>, where ip is default to "0.0.0.0".
+extern void srs_parse_endpoint(std::string hostport, std::string& ip, int& port);
+
 // parse the int64 value to string.
 extern std::string srs_int2str(int64_t value);
 // parse the float value to string, precise is 2.
 extern std::string srs_float2str(double value);
+// convert bool to switch value, true to "on", false to "off".
+extern std::string srs_bool2switch(bool v);
 
 // whether system is little endian
 extern bool srs_is_little_endian();

@@ -63,7 +63,7 @@ struct Context
     std::string tcUrl;
     std::string host;
     std::string ip;
-    std::string port;
+    int port;
     std::string vhost;
     std::string app;
     std::string stream;
@@ -509,9 +509,7 @@ int srs_librtmp_context_connect(Context* context)
     srs_assert(context->skt);
     
     std::string ip = context->ip;
-    int port = ::atoi(context->port.c_str());
-    
-    if ((ret = context->skt->connect(ip.c_str(), port)) != ERROR_SUCCESS) {
+    if ((ret = context->skt->connect(ip.c_str(), context->port)) != ERROR_SUCCESS) {
         return ret;
     }
     

@@ -708,7 +708,7 @@ public:
      */
     virtual int flush_message_queue();
 private:
-    virtual int connect_app(std::string ep_server, std::string ep_port);
+    virtual int connect_app(std::string ep_server, int ep_port);
     // close the connected io and rtmp to ready to be re-connect.
     virtual void close();
 };
@@ -1235,8 +1235,8 @@ int SrsIngestSrsOutput::connect()
     }
     
     // connect host.
-    if ((ret = srs_socket_connect(req->host, ::atoi(req->port.c_str()), ST_UTIME_NO_TIMEOUT, &stfd)) != ERROR_SUCCESS) {
-        srs_error("mpegts: connect server %s:%s failed. ret=%d", req->host.c_str(), req->port.c_str(), ret);
+    if ((ret = srs_socket_connect(req->host, req->port, ST_UTIME_NO_TIMEOUT, &stfd)) != ERROR_SUCCESS) {
+        srs_error("mpegts: connect server %s:%d failed. ret=%d", req->host.c_str(), req->port, ret);
         return ret;
     }
     io = new SrsStSocket(stfd);
@@ -1270,7 +1270,7 @@ int SrsIngestSrsOutput::connect()
 }
 
 // TODO: FIXME: refine the connect_app.
-int SrsIngestSrsOutput::connect_app(string ep_server, string ep_port)
+int SrsIngestSrsOutput::connect_app(string ep_server, int ep_port)
 {
     int ret = ERROR_SUCCESS;
     

@@ -44,7 +44,7 @@ using namespace std;
 void srs_discovery_tc_url(
     string tcUrl, 
     string& schema, string& host, string& vhost, 
-    string& app, string& port, std::string& param
+    string& app, int& port, std::string& param
 ) {
     size_t pos = std::string::npos;
     std::string url = tcUrl;
@@ -63,8 +63,7 @@ void srs_discovery_tc_url(
 
     port = SRS_CONSTS_RTMP_DEFAULT_PORT;
     if ((pos = host.find(":")) != std::string::npos) {
-        port = host.substr(pos + 1);
-        host = host.substr(0, pos);
+        srs_parse_hostport(host, host, port);
         srs_info("discovery host=%s, port=%s", host.c_str(), port.c_str());
     }
 
@@ -127,11 +126,6 @@ void srs_random_generate(char* bytes, int size)
 
 string srs_generate_tc_url(string ip, string vhost, string app, int port, string param)
 {
-    return srs_generate_tc_url(ip, vhost, app, srs_int2str(port), param);
-}
-
-string srs_generate_tc_url(string ip, string vhost, string app, string port, string param)
-{
     string tcUrl = "rtmp://";
     
     if (vhost == SRS_CONSTS_RTMP_DEFAULT_VHOST) {
@@ -142,7 +136,7 @@ string srs_generate_tc_url(string ip, string vhost, string app, string port, str
     
     if (port != SRS_CONSTS_RTMP_DEFAULT_PORT) {
         tcUrl += ":";
-        tcUrl += port;
+        tcUrl += srs_int2str(port);
     }
     
     tcUrl += "/";

@@ -58,7 +58,7 @@ class ISrsProtocolReaderWriter;
 extern void srs_discovery_tc_url(
     std::string tcUrl, 
     std::string& schema, std::string& host, std::string& vhost, 
-    std::string& app, std::string& port, std::string& param
+    std::string& app, int& port, std::string& param
 );
 
 /**
@@ -86,10 +86,6 @@ extern void srs_random_generate(char* bytes, int size);
 * @remark ignore port if port equals to default port 1935.
 */
 extern std::string srs_generate_tc_url(
-    std::string ip, std::string vhost, std::string app, std::string port,
-    std::string param
-);
-extern std::string srs_generate_tc_url(
     std::string ip, std::string vhost, std::string app, int port,
     std::string param
 );

@@ -1664,6 +1664,7 @@ SrsRequest::SrsRequest()
 {
     objectEncoding = RTMP_SIG_AMF0_VER;
     duration = -1;
+    port = SRS_CONSTS_RTMP_DEFAULT_PORT;
     args = NULL;
 }
 

@@ -554,7 +554,7 @@ public:
     // the host in tcUrl.
     std::string host;
     // the port in tcUrl.
-    std::string port;
+    int port;
     // the app in tcUrl, without param.
     std::string app;
     // the param in tcUrl(app).