add author byteman for h264 to flv.

@@ -5,3 +5,4 @@ Authors ordered by first contribution.
 * xiangcheng.liu<liuxc0116@foxmail.com>
 * naijia.liu<youngcow@youngcow.net>
 * alcoholyi<alcoholyi@qq.com>
+* byteman<wangchen2011@gmail.com>

@@ -91,6 +91,30 @@ http_stream {
 vhost __defaultVhost__ {
 }
 
+# vhost for edge, edge and origin is the same vhost
+vhost same.edge.srs.com {
+    # the mode of vhost, local or remote.
+    #       local: vhost is origin vhost, which provides stream source.
+    #       remote: vhost is edge vhost, which pull/push to origin.
+    # default: local
+    mode            remote;
+    # for edge(remote mode), user must specifies the origin server
+    # format as: <server_name|ip>[:port]
+    # @remark user can specifies multiple origin for error backup, by space,
+    # for example, 192.168.1.100:1935 192.168.1.101:1935 192.168.1.102:1935
+    origin          127.0.0.1:1935 localhost:1935;
+}
+# vhost for edge, chnage vhost.
+vhost change.edge.srs.com {
+    mode            remote;
+    origin          127.0.0.1:1935 localhost:1935 {
+        # specify the vhost to override the vhost in client request.
+        vhost       edge2.srs.com;
+        # specify the refer(pageUrl) to override the refer in client request.
+        refer       http://srs/index.html;
+    }
+}
+
 # vhost for dvr
 vhost dvr.srs.com {
     # dvr RTMP stream to file,

@@ -1805,6 +1805,22 @@ int SrsConfig::get_bw_check_limit_kbps(const string &vhost)
     return ::atoi(conf->arg0().c_str());
 }
 
+bool SrsConfig::get_vhost_is_edge(std::string vhost)
+{
+    SrsConfDirective* conf = get_vhost(vhost);
+    
+    if (!conf) {
+        return false;
+    }
+    
+    conf = conf->get("mode");
+    if (!conf || conf->arg0() != "remote") {
+        return false;
+    }
+    
+    return true;
+}
+
 SrsConfDirective* SrsConfig::get_transcode(string vhost, string scope)
 {
     SrsConfDirective* conf = get_vhost(vhost);

@@ -163,7 +163,7 @@ public:
     virtual int                 get_pithy_print_ingester();
     virtual int                 get_pithy_print_hls();
     virtual int                 get_pithy_print_play();
-// vhost section
+// vhost specified section
 public:
     virtual SrsConfDirective*   get_vhost(std::string vhost);
     virtual void                get_vhosts(std::vector<SrsConfDirective*>& vhosts);
@@ -190,6 +190,9 @@ public:
     virtual std::string         get_bw_check_key(const std::string& vhost);
     virtual int                 get_bw_check_interval_ms(const std::string& vhost);
     virtual int                 get_bw_check_limit_kbps(const std::string& vhost);
+// vhost edge section
+public:
+    virtual bool                get_vhost_is_edge(std::string vhost);
 // vhost transcode section
 public:
     virtual SrsConfDirective*   get_transcode(std::string vhost, std::string scope);

@@ -286,8 +286,10 @@ int SrsRtmpConn::stream_service_cycle()
         return ret;
     }
     
+    bool vhost_is_edge = _srs_config->get_vhost_is_edge(req->vhost);
     bool enabled_cache = _srs_config->get_gop_cache(req->vhost);
-    srs_trace("source found, url=%s, enabled_cache=%d", req->get_stream_url().c_str(), enabled_cache);
+    srs_trace("source found, url=%s, enabled_cache=%d, edge=%d", 
+        req->get_stream_url().c_str(), enabled_cache, vhost_is_edge);
     source->set_cache(enabled_cache);
     
     switch (type) {