rtmp edge support 302 redirect.

@@ -70,8 +70,9 @@ SrsEdgeUpstream::~SrsEdgeUpstream()
 {
 }
 
-SrsEdgeRtmpUpstream::SrsEdgeRtmpUpstream()
+SrsEdgeRtmpUpstream::SrsEdgeRtmpUpstream(string r)
 {
+    redirect = r;
     sdk = new SrsSimpleRtmpClient();
 }
 
@@ -106,6 +107,17 @@ int SrsEdgeRtmpUpstream::connect(SrsRequest* r, SrsLbRoundRobin* lb)
         int port = SRS_CONSTS_RTMP_DEFAULT_PORT;
         srs_parse_hostport(server, server, port);
         
+        // override the origin info by redirect.
+        if (!redirect.empty()) {
+            int _port;
+            string _schema, _vhost, _app, _param, _host;
+            srs_discovery_tc_url(redirect, _schema, _host, _vhost, _app, _port, _param);
+            
+            srs_warn("RTMP redirect %s:%d to %s:%d", server.c_str(), port, _host.c_str(), _port);
+            server = _host;
+            port = _port;
+        }
+        
         // support vhost tranform for edge,
         // @see https://github.com/ossrs/srs/issues/372
         std::string vhost = _srs_config->get_vhost_edge_transform_vhost(req->vhost);
@@ -160,7 +172,7 @@ SrsEdgeIngester::SrsEdgeIngester()
     edge = NULL;
     req = NULL;
     
-    upstream = new SrsEdgeRtmpUpstream();
+    upstream = new SrsEdgeRtmpUpstream(redirect);
     lb = new SrsLbRoundRobin();
     pthread = new SrsReusableThread2("edge-igs", this, SRS_EDGE_INGESTER_SLEEP_US);
 }
@@ -215,22 +227,39 @@ int SrsEdgeIngester::cycle()
 {
     int ret = ERROR_SUCCESS;
     
-    if ((ret = source->on_source_id_changed(_srs_context->get_id())) != ERROR_SUCCESS) {
-        return ret;
-    }
-    
-    if ((ret = upstream->connect(req, lb)) != ERROR_SUCCESS) {
-        return ret;
-    }
-    
-    if ((ret = edge->on_ingest_play()) != ERROR_SUCCESS) {
-        return ret;
-    }
-    
-    ret = ingest();
-    if (srs_is_client_gracefully_close(ret)) {
-        srs_warn("origin disconnected, retry. ret=%d", ret);
-        ret = ERROR_SUCCESS;
+    for (;;) {
+        srs_freep(upstream);
+        upstream = new SrsEdgeRtmpUpstream(redirect);
+        
+        // we only use the redict once.
+        // reset the redirect to empty, for maybe the origin changed.
+        redirect = "";
+        
+        if ((ret = source->on_source_id_changed(_srs_context->get_id())) != ERROR_SUCCESS) {
+            return ret;
+        }
+        
+        if ((ret = upstream->connect(req, lb)) != ERROR_SUCCESS) {
+            return ret;
+        }
+        
+        if ((ret = edge->on_ingest_play()) != ERROR_SUCCESS) {
+            return ret;
+        }
+        
+        ret = ingest();
+        
+        // retry for rtmp 302 immediately.
+        if (ret == ERROR_CONTROL_REDIRECT) {
+            ret = ERROR_SUCCESS;
+            continue;
+        }
+        
+        if (srs_is_client_gracefully_close(ret)) {
+            srs_warn("origin disconnected, retry. ret=%d", ret);
+            ret = ERROR_SUCCESS;
+        }
+        break;
     }
     
     return ret;
@@ -327,6 +356,47 @@ int SrsEdgeIngester::process_publish_message(SrsCommonMessage* msg)
         return ret;
     }
     
+    // call messages, for example, reject, redirect.
+    if (msg->header.is_amf0_command() || msg->header.is_amf3_command()) {
+        SrsPacket* pkt = NULL;
+        if ((ret = upstream->decode_message(msg, &pkt)) != ERROR_SUCCESS) {
+            srs_error("decode call message failed. ret=%d", ret);
+            return ret;
+        }
+        SrsAutoFree(SrsPacket, pkt);
+        
+        // RTMP 302 redirect
+        if (dynamic_cast<SrsCallPacket*>(pkt)) {
+            SrsCallPacket* call = dynamic_cast<SrsCallPacket*>(pkt);
+            if (!call->arguments->is_object()) {
+                return ret;
+            }
+            
+            SrsAmf0Any* prop = NULL;
+            SrsAmf0Object* evt = call->arguments->to_object();
+            
+            if ((prop = evt->ensure_property_string("level")) == NULL) {
+                return ret;
+            } else if (prop->to_str() != StatusLevelError) {
+                return ret;
+            }
+            
+            if ((prop = evt->get_property("ex")) == NULL || !prop->is_object()) {
+                return ret;
+            }
+            SrsAmf0Object* ex = prop->to_object();
+            
+            if ((prop = ex->ensure_property_string("redirect")) == NULL) {
+                return ret;
+            }
+            redirect = prop->to_str();
+            
+            ret = ERROR_CONTROL_REDIRECT;
+            srs_info("RTMP 302 redirect to %s, ret=%d", redirect.c_str(), ret);
+            return ret;
+        }
+    }
+    
     return ret;
 }
 

@@ -97,9 +97,13 @@ public:
 class SrsEdgeRtmpUpstream : public SrsEdgeUpstream
 {
 private:
+    // for RTMP 302, if not empty,
+    // use this <ip[:port]> as upstream.
+    std::string redirect;
     SrsSimpleRtmpClient* sdk;
 public:
-    SrsEdgeRtmpUpstream();
+    // @param rediect, override the server. ignore if empty.
+    SrsEdgeRtmpUpstream(std::string r);
     virtual ~SrsEdgeRtmpUpstream();
 public:
     virtual int connect(SrsRequest* r, SrsLbRoundRobin* lb);
@@ -123,6 +127,8 @@ private:
     SrsReusableThread2* pthread;
     SrsLbRoundRobin* lb;
     SrsEdgeUpstream* upstream;
+    // for RTMP 302 redirect.
+    std::string redirect;
 public:
     SrsEdgeIngester();
     virtual ~SrsEdgeIngester();