diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index ccc4738c7..c82963fb7 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -2656,6 +2656,29 @@ string SrsConfig::get_vhost_http_dir(string vhost)
     return conf->arg0();
 }
 
+void SrsConfig::set_atc(std::string vhost, bool atc)
+{
+    SrsConfDirective* conf = get_vhost(vhost);
+    if (!conf) {
+        return;
+    }
+    
+    // create if not exists
+    if (conf->get("atc") == NULL) {
+        SrsConfDirective* o = new SrsConfDirective();
+        o->name = "atc";
+        conf->directives.push_back(o);
+    }
+    
+    // get the atc node
+    conf = conf->get("atc");
+    srs_assert(conf);
+    
+    // refresh
+    conf->directives.clear();
+    conf->args.push_back((atc? "true":"false"));
+}
+
 bool srs_directive_equals(SrsConfDirective* a, SrsConfDirective* b)
 {
     // both NULL, equal.
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index d5d43f98b..330a193d9 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -269,6 +269,9 @@ public:
     virtual bool                get_vhost_http_enabled(std::string vhost);
     virtual std::string         get_vhost_http_mount(std::string vhost);
     virtual std::string         get_vhost_http_dir(std::string vhost);
+// setter in memory
+public:
+    virtual void                set_atc(std::string vhost, bool atc);
 };
 
 /**
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 2f0f09c7e..f660abf6c 100644
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -822,6 +822,14 @@ int SrsSource::on_meta_data(SrsMessage* msg, SrsOnMetaDataPacket* metadata)
         }
     }
     
+    // if bravo-atc, open atc for vhost.
+    if ((prop = metadata->metadata->get_property("bravo_atc")) != NULL) {
+        if (prop->is_string() && prop->to_str() == "true") {
+            atc = true;
+            _srs_config->set_atc(_req->vhost, true);
+        }
+    }
+    
     // encode the metadata to payload
     int size = 0;
     char* payload = NULL;
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 1c4eb6481..6f213c446 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "82"
+#define VERSION_REVISION "83"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "srs"