diff --git a/trunk/src/app/srs_app_edge.cpp b/trunk/src/app/srs_app_edge.cpp
index c4913ba8ab..0eddb9588f 100644
--- a/trunk/src/app/srs_app_edge.cpp
+++ b/trunk/src/app/srs_app_edge.cpp
@@ -782,6 +782,10 @@ srs_error_t SrsEdgeForwarder::start()
         
         url = srs_generate_rtmp_url(server, port, req->host, vhost, req->app, req->stream, req->param);
     }
+
+    // We must stop the coroutine before disposing the sdk.
+    srs_freep(trd);
+    trd = new SrsSTCoroutine("edge-fwr", this, _srs_context->get_id());
     
     // open socket.
     srs_freep(sdk);
@@ -806,10 +810,8 @@ srs_error_t SrsEdgeForwarder::start()
     if ((err = sdk->publish(_srs_config->get_chunk_size(req->vhost), false, &stream)) != srs_success) {
         return srs_error_wrap(err, "sdk publish");
     }
-    
-    srs_freep(trd);
-    trd = new SrsSTCoroutine("edge-fwr", this, _srs_context->get_id());
-    
+
+    // Start the forwarding coroutine.
     if ((err = trd->start()) != srs_success) {
         return srs_error_wrap(err, "coroutine");
     }
@@ -821,9 +823,12 @@ srs_error_t SrsEdgeForwarder::start()
 
 void SrsEdgeForwarder::stop()
 {
+    // Make sure the coroutine is stopped before disposing the sdk,
+    // for sdk is used by coroutine.
     trd->stop();
-    queue->clear();
     srs_freep(sdk);
+
+    queue->clear();
 }
 
 // when error, edge ingester sleep for a while and retry.
@@ -840,7 +845,13 @@ srs_error_t SrsEdgeForwarder::cycle()
             return srs_error_wrap(err, "thread pull");
         }
 
-        if ((err = do_cycle()) != srs_success) {
+        // If coroutine stopping, we should always set the quit error code.
+        err = do_cycle();
+        if (send_error_code == 0) {
+            send_error_code = srs_error_code(err);
+        }
+
+        if (err != srs_success) {
             return srs_error_wrap(err, "do cycle");
         }
 
diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index b08262281c..654660e345 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -959,7 +959,9 @@ srs_error_t SrsRtmpConn::publishing(SrsSharedPtr<SrsLiveSource> source)
     // but failed, so we must cleanup it.
     // @see https://github.com/ossrs/srs/issues/474
     // @remark when stream is busy, should never release it.
-    if (srs_error_code(err) != ERROR_SYSTEM_STREAM_BUSY) {
+    // @remark If state is invalid, should not release it because it's not published by this session.
+    int code = srs_error_code(err);
+    if (code != ERROR_SYSTEM_STREAM_BUSY && code != ERROR_RTMP_EDGE_PUBLISH_STATE) {
         release_publish(source);
     }