diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 3e384d01e..50befea4e 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -34,6 +34,8 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
+* v4.0, 2022-03-07, RTC: Identify the WebRTC publisher in param for hooks. v4.0.247
+* v4.0, 2022-03-07, SRT: Append vhost to stream, not app. v4.0.246
 * v4.0, 2022-02-15, Fix warnings for uuid. v4.0.245
 * v4.0, 2022-02-15, Merge [#2917](https://github.com/ossrs/srs/pull/2917): SRT: Close connection if RTMP failed. (#2917). v4.0.244
 * v4.0, 2022-02-15, Refine build script for SRT to avoid warnings. v4.0.243
diff --git a/trunk/src/app/srs_app_rtc_api.cpp b/trunk/src/app/srs_app_rtc_api.cpp
index e524f6017..65f1b53d5 100644
--- a/trunk/src/app/srs_app_rtc_api.cpp
+++ b/trunk/src/app/srs_app_rtc_api.cpp
@@ -394,9 +394,11 @@ srs_error_t SrsGoApiRtcPublish::do_serve_http(ISrsHttpResponseWriter* w, ISrsHtt
     ruc.api_ = api;
 
     srs_parse_rtmp_url(streamurl, ruc.req_->tcUrl, ruc.req_->stream);
+    srs_discovery_tc_url(ruc.req_->tcUrl, ruc.req_->schema, ruc.req_->host, ruc.req_->vhost,
+    ruc.req_->app, ruc.req_->stream, ruc.req_->port, ruc.req_->param);
 
-    srs_discovery_tc_url(ruc.req_->tcUrl, ruc.req_->schema, ruc.req_->host, ruc.req_->vhost, 
-                         ruc.req_->app, ruc.req_->stream, ruc.req_->port, ruc.req_->param);
+    // Identify WebRTC publisher by param upstream=rtc
+    ruc.req_->param = srs_string_trim_start(ruc.req_->param + "&upstream=rtc", "&");
 
     // discovery vhost, resolve the vhost from config
     SrsConfDirective* parsed_vhost = _srs_config->get_vhost(ruc.req_->vhost);
@@ -527,11 +529,9 @@ srs_error_t SrsGoApiRtcPublish::http_hooks_on_publish(SrsRequest* req)
 
     if (true) {
         SrsConfDirective* conf = _srs_config->get_vhost_on_publish(req->vhost);
-
         if (!conf) {
             return err;
         }
-
         hooks = conf->args;
     }
 
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index a92114466..094ab0701 100644
--- a/trunk/src/core/srs_core_version4.hpp
+++ b/trunk/src/core/srs_core_version4.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       4
 #define VERSION_MINOR       0
-#define VERSION_REVISION    245
+#define VERSION_REVISION    247
 
 #endif
diff --git a/trunk/src/srt/srt_to_rtmp.cpp b/trunk/src/srt/srt_to_rtmp.cpp
index 89e0ac381..f367201a4 100644
--- a/trunk/src/srt/srt_to_rtmp.cpp
+++ b/trunk/src/srt/srt_to_rtmp.cpp
@@ -283,10 +283,11 @@ rtmp_client::rtmp_client(std::string key_path):_key_path(key_path)
     ss << "rtmp://" << SRS_CONSTS_LOCALHOST;
     ss << ":" << port;
     ss << "/" << _appname;
+    ss << "/" << _streamname;
+    ss << (_streamname.find("?") != std::string::npos ? "&" : "?") << "upstream=srt";
     if (_vhost != DEF_VHOST) {
-        ss << "?vhost=" << _vhost;
+        ss << "&vhost=" << _vhost;
     }
-    ss << "/" << _streamname;
 
     _url = ss.str();