enable the SRS_PERF_TCP_NODELAY and add config tcp_nodelay. 2.0.182

@@ -342,6 +342,7 @@ Remark:
 
 ## History
 
+* v2.0, 2015-08-12, enable the SRS_PERF_TCP_NODELAY and add config tcp_nodelay. 2.0.182
 * v2.0, 2015-08-11, for [#442](https://github.com/simple-rtmp-server/srs/issues/442) support kickoff connected client. 2.0.181
 * v2.0, 2015-07-21, for [#169](https://github.com/simple-rtmp-server/srs/issues/169) support default values for transcode. 2.0.180
 * v2.0, 2015-07-21, fix [#435](https://github.com/simple-rtmp-server/srs/issues/435) add pageUrl for HTTP callback on_play.

@@ -851,6 +851,10 @@ vhost min.delay.com {
     # drop the old whole gop.
     # default: 30
     queue_length    10;
+    # whether enable the TCP_NODELAY
+    # if on, set the nodelay of fd by setsockopt
+    # default: off
+    tcp_nodelay     on;
 }
 
 # the vhost for antisuck.

@@ -12,4 +12,5 @@ vhost __defaultVhost__ {
         enabled     off;
     }
     mw_latency      100;
+    tcp_nodelay     on;
 }

@@ -1750,7 +1750,7 @@ int SrsConfig::check_config()
                 && n != "time_jitter" && n != "mix_correct"
                 && n != "atc" && n != "atc_auto"
                 && n != "debug_srs_upnode"
-                && n != "mr" && n != "mw_latency" && n != "min_latency"
+                && n != "mr" && n != "mw_latency" && n != "min_latency" && n != "tcp_nodelay"
                 && n != "security" && n != "http_remux"
                 && n != "http" && n != "http_static"
                 && n != "hds"
@@ -2489,6 +2489,23 @@ bool SrsConfig::get_realtime_enabled(string vhost)
     return SRS_CONF_PERFER_FALSE(conf->arg0());
 }
 
+bool SrsConfig::get_tcp_nodelay(string vhost)
+{
+    static bool DEFAULT = false;
+    
+    SrsConfDirective* conf = get_vhost(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
+    
+    conf = conf->get("tcp_nodelay");
+    if (!conf || conf->arg0().empty()) {
+        return DEFAULT;
+    }
+    
+    return SRS_CONF_PERFER_FALSE(conf->arg0());
+}
+
 int SrsConfig::get_global_chunk_size()
 {
     SrsConfDirective* conf = root->get("chunk_size");

@@ -522,6 +522,10 @@ public:
     */
     // TODO: FIXME: add utest for min_latency.
     virtual bool                get_realtime_enabled(std::string vhost);
+    /**
+     * whether enable tcp nodelay for all clients of vhost.
+     */
+    virtual bool                get_tcp_nodelay(std::string vhost);
 private:
     /**
     * get the global chunk size.

@@ -591,7 +591,7 @@ int SrsRtmpConn::do_playing(SrsSource* source, SrsConsumer* consumer, SrsQueueRe
     change_mw_sleep(_srs_config->get_mw_sleep_ms(req->vhost));
     
     // set the sock options.
-    play_set_sock_options();
+    set_sock_options();
     
     while (!disposed) {
         // collect elapse for pithy print.
@@ -769,6 +769,9 @@ int SrsRtmpConn::do_publishing(SrsSource* source, SrsPublishRecvThread* trd)
         srs_error("start isolate recv thread failed. ret=%d", ret);
         return ret;
     }
+    
+    // set the sock options.
+    set_sock_options();
 
     int64_t nb_msgs = 0;
     while (!disposed) {
@@ -1093,10 +1096,10 @@ void SrsRtmpConn::change_mw_sleep(int sleep_ms)
     mw_sleep = sleep_ms;
 }
 
-void SrsRtmpConn::play_set_sock_options()
+void SrsRtmpConn::set_sock_options()
 {
+    if (_srs_config->get_tcp_nodelay(req->vhost)) {
 #ifdef SRS_PERF_TCP_NODELAY
-    if (true) {
         int fd = st_netfd_fileno(stfd);
     
         socklen_t nb_v = sizeof(int);
@@ -1112,8 +1115,10 @@ void SrsRtmpConn::play_set_sock_options()
         getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &v, &nb_v);
         
         srs_trace("set TCP_NODELAY %d=>%d", ov, v);
-    }
+#else
+        srs_warn("SRS_PERF_TCP_NODELAY is disabled but tcp_nodelay configed.");
 #endif
+    }
 }
 
 int SrsRtmpConn::check_edge_token_traverse_auth()

@@ -119,7 +119,7 @@ private:
     virtual int process_publish_message(SrsSource* source, SrsCommonMessage* msg, bool vhost_is_edge);
     virtual int process_play_control_msg(SrsConsumer* consumer, SrsCommonMessage* msg);
     virtual void change_mw_sleep(int sleep_ms);
-    virtual void play_set_sock_options();
+    virtual void set_sock_options();
 private:
     virtual int check_edge_token_traverse_auth();
     virtual int connect_server(int origin_index, st_netfd_t* pstsock);

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    181
+#define VERSION_REVISION    182
 
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"

@@ -163,12 +163,12 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //#undef SRS_PERF_COMPLEX_SEND
 #define SRS_PERF_COMPLEX_SEND
 /**
-* whether enable the TCP_NODELAY
-* user maybe need send small tcp packet for some network.
-* @see https://github.com/simple-rtmp-server/srs/issues/320
-*/
-//#define SRS_PERF_TCP_NODELAY
+ * whether enable the TCP_NODELAY
+ * user maybe need send small tcp packet for some network.
+ * @see https://github.com/simple-rtmp-server/srs/issues/320
+ */
 #undef SRS_PERF_TCP_NODELAY
+#define SRS_PERF_TCP_NODELAY
 /**
 * set the socket send buffer,
 * to force the server to send smaller tcp packet.