diff --git a/trunk/research/librtmp/srs_flv_injecter.c b/trunk/research/librtmp/srs_flv_injecter.c
index 9779081d6..3be014670 100644
--- a/trunk/research/librtmp/srs_flv_injecter.c
+++ b/trunk/research/librtmp/srs_flv_injecter.c
@@ -249,11 +249,11 @@ int build_keyframes(srs_flv_t ic, srs_amf0_t *pname, srs_amf0_t* pdata, srs_amf0
             if (srs_amf0_is_object(amf0_data)) {
                 keyframes = srs_amf0_object_property(amf0_data, "keyframes");
                 if (keyframes == NULL) {
-                    keyframes = srs_amf0_create_ecma_array();
+                    keyframes = srs_amf0_create_object();
+                    srs_amf0_object_property_set(amf0_data, "keyframes", keyframes);
                 }
-                srs_amf0_object_property_set(amf0_data, "keyframes", keyframes);
                 // always clear the old keyframes.
-                srs_amf0_ecma_array_clear(keyframes);
+                srs_amf0_object_clear(keyframes);
                 
                 *pfilepositions = filepositions = srs_amf0_create_strict_array();
                 srs_amf0_object_property_set(keyframes, "filepositions", filepositions);
@@ -263,17 +263,17 @@ int build_keyframes(srs_flv_t ic, srs_amf0_t *pname, srs_amf0_t* pdata, srs_amf0
             } else if (srs_amf0_is_ecma_array(amf0_data)) {
                 keyframes = srs_amf0_ecma_array_property(amf0_data, "keyframes");
                 if (keyframes == NULL) {
-                    keyframes = srs_amf0_create_ecma_array();
+                    keyframes = srs_amf0_create_object();
+                    srs_amf0_ecma_array_property_set(amf0_data, "keyframes", keyframes);
                 }
-                srs_amf0_ecma_array_property_set(amf0_data, "keyframes", keyframes);
                 // always clear the old keyframes.
-                srs_amf0_ecma_array_clear(keyframes);
+                srs_amf0_object_clear(keyframes);
                 
                 *pfilepositions = filepositions = srs_amf0_create_strict_array();
-                srs_amf0_ecma_array_property_set(keyframes, "filepositions", filepositions);
+                srs_amf0_object_property_set(keyframes, "filepositions", filepositions);
                 
                 times = srs_amf0_create_strict_array();
-                srs_amf0_ecma_array_property_set(keyframes, "times", times);
+                srs_amf0_object_property_set(keyframes, "times", times);
             }
         }
         
diff --git a/trunk/src/app/srs_app_edge.cpp b/trunk/src/app/srs_app_edge.cpp
index aa54b4cd6..3350ee9de 100644
--- a/trunk/src/app/srs_app_edge.cpp
+++ b/trunk/src/app/srs_app_edge.cpp
@@ -152,8 +152,10 @@ int SrsEdgeIngester::cycle()
         return ret;
     }
     
-    if ((ret = ingest()) != ERROR_SUCCESS) {
-        return ret;
+    ret = ingest();
+    if (srs_is_client_gracefully_close(ret)) {
+        srs_warn("origin disconnected, retry. ret=%d", ret);
+        ret = ERROR_SUCCESS;
     }
     
     return ret;
@@ -186,7 +188,9 @@ int SrsEdgeIngester::ingest()
         // read from client.
         SrsMessage* msg = NULL;
         if ((ret = client->recv_message(&msg)) != ERROR_SUCCESS) {
-            srs_error("ingest recv origin server message failed. ret=%d", ret);
+            if (!srs_is_client_gracefully_close(ret)) {
+                srs_error("ingest recv origin server message failed. ret=%d", ret);
+            }
             return ret;
         }
         srs_verbose("edge loop recv message. ret=%d", ret);
@@ -286,11 +290,8 @@ int SrsEdgeIngester::connect_server()
         server = server.substr(0, pos);
         port = ::atoi(s_port.c_str());
     }
-    
-    // open socket.
-    srs_trace("edge connected, can_publish=%d, url=%s/%s, server=%s:%d",
-        _source->can_publish(), _req->tcUrl.c_str(), _req->stream.c_str(), server.c_str(), port);
 
+    // open socket.
     // TODO: FIXME: extract utility method
     int sock = socket(AF_INET, SOCK_STREAM, 0);
     if(sock == -1){
@@ -332,7 +333,10 @@ int SrsEdgeIngester::connect_server()
         srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
         return ret;
     }
-    srs_trace("connect to server success. server=%s, ip=%s, port=%d", server.c_str(), ip.c_str(), port);
+    srs_info("connect to server success. server=%s, ip=%s, port=%d", server.c_str(), ip.c_str(), port);
+    
+    srs_trace("edge connected, can_publish=%d, url=%s/%s, server=%s:%d",
+        _source->can_publish(), _req->tcUrl.c_str(), _req->stream.c_str(), server.c_str(), port);
     
     return ret;
 }
diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index b4c9ddb94..dfab4d6fd 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -99,7 +99,7 @@ int SrsRtmpConn::do_cycle()
 {
     int ret = ERROR_SUCCESS;
     
-    srs_trace("serve client, peer ip=%s", ip.c_str());
+    srs_trace("serve client ip=%s", ip.c_str());
 
     rtmp->set_recv_timeout(SRS_RECV_TIMEOUT_US);
     rtmp->set_send_timeout(SRS_SEND_TIMEOUT_US);
@@ -140,7 +140,7 @@ int SrsRtmpConn::do_cycle()
     }
     srs_verbose("check vhost success.");
     
-    srs_trace("rtmp connect app success. "
+    srs_trace("connect app, "
         "tcUrl=%s, pageUrl=%s, swfUrl=%s, schema=%s, vhost=%s, port=%s, app=%s", 
         req->tcUrl.c_str(), req->pageUrl.c_str(), req->swfUrl.c_str(), 
         req->schema.c_str(), req->vhost.c_str(), req->port.c_str(),
@@ -254,11 +254,13 @@ int SrsRtmpConn::stream_service_cycle()
         
     SrsRtmpConnType type;
     if ((ret = rtmp->identify_client(res->stream_id, type, req->stream, req->duration)) != ERROR_SUCCESS) {
-        srs_error("identify client failed. ret=%d", ret);
+        if (!srs_is_client_gracefully_close(ret)) {
+            srs_error("identify client failed. ret=%d", ret);
+        }
         return ret;
     }
     req->strip();
-    srs_trace("identify client success. type=%s, stream_name=%s, duration=%.2f", 
+    srs_trace("client identified, type=%s, stream_name=%s, duration=%.2f", 
         srs_client_type_string(type).c_str(), req->stream.c_str(), req->duration);
 
     // client is identified, set the timeout to service timeout.
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 7b685f093..ebab9b77f 100644
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -23,6 +23,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_app_source.hpp>
 
+#include <sstream>
 #include <algorithm>
 using namespace std;
 
@@ -850,11 +851,28 @@ int SrsSource::on_meta_data(SrsMessage* msg, SrsOnMetaDataPacket* metadata)
         return ret;
     }
 #endif
+
+    SrsAmf0Any* prop = NULL;
     
+    // generate metadata info to print
+    std::stringstream ss;
+    if ((prop = metadata->metadata->ensure_property_number("width")) != NULL) {
+        ss << ", width=" << (int)prop->to_number();
+    }
+    if ((prop = metadata->metadata->ensure_property_number("height")) != NULL) {
+        ss << ", height=" << (int)prop->to_number();
+    }
+    if ((prop = metadata->metadata->ensure_property_number("videocodecid")) != NULL) {
+        ss << ", vcodec=" << (int)prop->to_number();
+    }
+    if ((prop = metadata->metadata->ensure_property_number("audiocodecid")) != NULL) {
+        ss << ", acodec=" << (int)prop->to_number();
+    }
+    
+    // add server info to metadata
     metadata->metadata->set("server", SrsAmf0Any::str(RTMP_SIG_SRS_KEY" "RTMP_SIG_SRS_VERSION" ("RTMP_SIG_SRS_URL_SHORT")"));
     metadata->metadata->set("authors", SrsAmf0Any::str(RTMP_SIG_SRS_PRIMARY_AUTHROS));
     
-    SrsAmf0Any* prop = NULL;
     if ((prop = metadata->metadata->get_property("audiosamplerate")) != NULL) {
         if (prop->is_number()) {
             sample_rate = (int)prop->to_number();
@@ -912,7 +930,7 @@ int SrsSource::on_meta_data(SrsMessage* msg, SrsOnMetaDataPacket* metadata)
                 return ret;
             }
         }
-        srs_trace("dispatch metadata success.");
+        srs_trace("got metadata%s", ss.str().c_str());
     }
     
     // copy to all forwarders
@@ -996,7 +1014,7 @@ int SrsSource::on_audio(SrsMessage* audio)
     if (SrsCodec::audio_is_sequence_header(msg->payload, msg->size)) {
         srs_freep(cache_sh_audio);
         cache_sh_audio = msg->copy();
-        srs_trace("update audio sequence header success. size=%d", msg->header.payload_length);
+        srs_trace("got audio sh, size=%d", msg->header.payload_length);
         return ret;
     }
     
@@ -1086,7 +1104,7 @@ int SrsSource::on_video(SrsMessage* video)
     if (SrsCodec::video_is_sequence_header(msg->payload, msg->size)) {
         srs_freep(cache_sh_video);
         cache_sh_video = msg->copy();
-        srs_trace("update video sequence header success. size=%d", msg->header.payload_length);
+        srs_trace("got video sh, size=%d", msg->header.payload_length);
         return ret;
     }
 
@@ -1277,7 +1295,8 @@ void SrsSource::on_unpublish()
     srs_freep(cache_sh_video);
     srs_freep(cache_sh_audio);
     
-    srs_trace("clear cache/metadata/sequence-headers when unpublish.");
+    srs_info("clear cache/metadata/sequence-headers when unpublish.");
+    srs_trace("cleanup when unpublish");
     
     _can_publish = true;
     _source_id = -1;
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 20bdac12d..dd505c78f 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 "122"
+#define VERSION_REVISION "123"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
diff --git a/trunk/src/libs/srs_librtmp.cpp b/trunk/src/libs/srs_librtmp.cpp
index f1d2d5451..d9c8bef99 100644
--- a/trunk/src/libs/srs_librtmp.cpp
+++ b/trunk/src/libs/srs_librtmp.cpp
@@ -594,6 +594,11 @@ srs_amf0_t srs_amf0_create_strict_array()
     return SrsAmf0Any::strict_array();
 }
 
+srs_amf0_t srs_amf0_create_object()
+{
+    return SrsAmf0Any::object();
+}
+
 void srs_amf0_free(srs_amf0_t amf0)
 {
     SrsAmf0Any* any = (SrsAmf0Any*)amf0;
@@ -697,88 +702,130 @@ void srs_amf0_set_number(srs_amf0_t amf0, amf0_number value)
 
 int srs_amf0_object_property_count(srs_amf0_t amf0)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_object());
+
     SrsAmf0Object* obj = (SrsAmf0Object*)amf0;
     return obj->count();
 }
 
 const char* srs_amf0_object_property_name_at(srs_amf0_t amf0, int index)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_object());
+
     SrsAmf0Object* obj = (SrsAmf0Object*)amf0;
     return obj->key_raw_at(index);
 }
 
 srs_amf0_t srs_amf0_object_property_value_at(srs_amf0_t amf0, int index)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_object());
+
     SrsAmf0Object* obj = (SrsAmf0Object*)amf0;
     return (srs_amf0_t)obj->value_at(index);
 }
 
 srs_amf0_t srs_amf0_object_property(srs_amf0_t amf0, const char* name)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_object());
+
     SrsAmf0Object* obj = (SrsAmf0Object*)amf0;
     return (srs_amf0_t)obj->get_property(name);
 }
 
 void srs_amf0_object_property_set(srs_amf0_t amf0, const char* name, srs_amf0_t value)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_object());
+
     SrsAmf0Object* obj = (SrsAmf0Object*)amf0;
-    SrsAmf0Any* any = (SrsAmf0Any*)value;
+    any = (SrsAmf0Any*)value;
     obj->set(name, any);
 }
 
+void srs_amf0_object_clear(srs_amf0_t amf0)
+{
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_object());
+
+    SrsAmf0Object* obj = (SrsAmf0Object*)amf0;
+    obj->clear();
+}
+
 int srs_amf0_ecma_array_property_count(srs_amf0_t amf0)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_ecma_array());
+
     SrsAmf0EcmaArray * obj = (SrsAmf0EcmaArray*)amf0;
     return obj->count();
 }
 
 const char* srs_amf0_ecma_array_property_name_at(srs_amf0_t amf0, int index)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_ecma_array());
+
     SrsAmf0EcmaArray* obj = (SrsAmf0EcmaArray*)amf0;
     return obj->key_raw_at(index);
 }
 
 srs_amf0_t srs_amf0_ecma_array_property_value_at(srs_amf0_t amf0, int index)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_ecma_array());
+
     SrsAmf0EcmaArray* obj = (SrsAmf0EcmaArray*)amf0;
     return (srs_amf0_t)obj->value_at(index);
 }
 
 srs_amf0_t srs_amf0_ecma_array_property(srs_amf0_t amf0, const char* name)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_ecma_array());
+
     SrsAmf0EcmaArray* obj = (SrsAmf0EcmaArray*)amf0;
     return (srs_amf0_t)obj->get_property(name);
 }
 
 void srs_amf0_ecma_array_property_set(srs_amf0_t amf0, const char* name, srs_amf0_t value)
 {
-    SrsAmf0EcmaArray* obj = (SrsAmf0EcmaArray*)amf0;
-    SrsAmf0Any* any = (SrsAmf0Any*)value;
-    obj->set(name, any);
-}
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_ecma_array());
 
-void srs_amf0_ecma_array_clear(srs_amf0_t amf0)
-{
     SrsAmf0EcmaArray* obj = (SrsAmf0EcmaArray*)amf0;
-    obj->clear();
+    any = (SrsAmf0Any*)value;
+    obj->set(name, any);
 }
 
 int srs_amf0_strict_array_property_count(srs_amf0_t amf0)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_strict_array());
+
     SrsAmf0StrictArray * obj = (SrsAmf0StrictArray*)amf0;
     return obj->count();
 }
 
 srs_amf0_t srs_amf0_strict_array_property_at(srs_amf0_t amf0, int index)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_strict_array());
+
     SrsAmf0StrictArray* obj = (SrsAmf0StrictArray*)amf0;
     return (srs_amf0_t)obj->at(index);
 }
 
 void srs_amf0_strict_array_append(srs_amf0_t amf0, srs_amf0_t value)
 {
+    SrsAmf0Any* any = (SrsAmf0Any*)amf0;
+    srs_assert(any->is_strict_array());
+
     SrsAmf0StrictArray* obj = (SrsAmf0StrictArray*)amf0;
-    SrsAmf0Any* any = (SrsAmf0Any*)value;
+    any = (SrsAmf0Any*)value;
     obj->append(any);
 }
 
diff --git a/trunk/src/libs/srs_librtmp.hpp b/trunk/src/libs/srs_librtmp.hpp
index c236ea710..2e7d1d13b 100644
--- a/trunk/src/libs/srs_librtmp.hpp
+++ b/trunk/src/libs/srs_librtmp.hpp
@@ -196,6 +196,7 @@ srs_amf0_t srs_amf0_parse(char* data, int size, int* nparsed);
 srs_amf0_t srs_amf0_create_number(amf0_number value);
 srs_amf0_t srs_amf0_create_ecma_array();
 srs_amf0_t srs_amf0_create_strict_array();
+srs_amf0_t srs_amf0_create_object();
 void srs_amf0_free(srs_amf0_t amf0);
 void srs_amf0_free_bytes(char* data);
 /* size and to bytes */
@@ -221,13 +222,13 @@ const char* srs_amf0_object_property_name_at(srs_amf0_t amf0, int index);
 srs_amf0_t srs_amf0_object_property_value_at(srs_amf0_t amf0, int index);
 srs_amf0_t srs_amf0_object_property(srs_amf0_t amf0, const char* name);
 void srs_amf0_object_property_set(srs_amf0_t amf0, const char* name, srs_amf0_t value);
+void srs_amf0_object_clear(srs_amf0_t amf0);
 /* ecma array value converter */
 int srs_amf0_ecma_array_property_count(srs_amf0_t amf0);
 const char* srs_amf0_ecma_array_property_name_at(srs_amf0_t amf0, int index);
 srs_amf0_t srs_amf0_ecma_array_property_value_at(srs_amf0_t amf0, int index);
 srs_amf0_t srs_amf0_ecma_array_property(srs_amf0_t amf0, const char* name);
 void srs_amf0_ecma_array_property_set(srs_amf0_t amf0, const char* name, srs_amf0_t value);
-void srs_amf0_ecma_array_clear(srs_amf0_t amf0);
 /* strict array value converter */
 int srs_amf0_strict_array_property_count(srs_amf0_t amf0);
 srs_amf0_t srs_amf0_strict_array_property_at(srs_amf0_t amf0, int index);
diff --git a/trunk/src/rtmp/srs_protocol_amf0.cpp b/trunk/src/rtmp/srs_protocol_amf0.cpp
index 00c5bd22e..b5c6ab8fd 100644
--- a/trunk/src/rtmp/srs_protocol_amf0.cpp
+++ b/trunk/src/rtmp/srs_protocol_amf0.cpp
@@ -788,6 +788,11 @@ SrsAmf0Any* SrsAmf0Object::copy()
     return copy;
 }
 
+void SrsAmf0Object::clear()
+{
+    properties->clear();
+}
+
 int SrsAmf0Object::count()
 {
     return properties->count();
diff --git a/trunk/src/rtmp/srs_protocol_amf0.hpp b/trunk/src/rtmp/srs_protocol_amf0.hpp
index 0b751dc9a..549eb174a 100644
--- a/trunk/src/rtmp/srs_protocol_amf0.hpp
+++ b/trunk/src/rtmp/srs_protocol_amf0.hpp
@@ -190,6 +190,7 @@ public:
     virtual SrsAmf0Any* copy();
     
 public:
+    virtual void clear();
     virtual int count();
     // @remark: max index is count().
     virtual std::string key_at(int index);
diff --git a/trunk/src/rtmp/srs_protocol_handshake.cpp b/trunk/src/rtmp/srs_protocol_handshake.cpp
index e13d7545c..2098ff0ce 100644
--- a/trunk/src/rtmp/srs_protocol_handshake.cpp
+++ b/trunk/src/rtmp/srs_protocol_handshake.cpp
@@ -1041,7 +1041,7 @@ int SrsSimpleHandshake::handshake_with_client(SrsHandshakeBytes* hs_bytes, ISrsP
         return ret;
     }
     
-    srs_trace("simple handshake with client success.");
+    srs_trace("simple handshake success.");
     
     return ret;
 }
@@ -1083,7 +1083,7 @@ int SrsSimpleHandshake::handshake_with_server(SrsHandshakeBytes* hs_bytes, ISrsP
     }
     srs_verbose("simple handshake write c2 success.");
     
-    srs_trace("simple handshake with server success.");
+    srs_trace("simple handshake success.");
     
     return ret;
 }
@@ -1189,7 +1189,7 @@ int SrsComplexHandshake::handshake_with_client(SrsHandshakeBytes* hs_bytes, ISrs
     // never verify c2, for ffmpeg will failed.
     // it's ok for flash.
     
-    srs_trace("complex handshake with client success");
+    srs_trace("complex handshake success");
     
     return ret;
 }
@@ -1269,7 +1269,7 @@ int SrsComplexHandshake::handshake_with_server(SrsHandshakeBytes* hs_bytes, ISrs
     }
     srs_verbose("complex handshake write c2 success.");
     
-    srs_trace("complex handshake with server success.");
+    srs_trace("complex handshake success.");
     
     return ret;
 }
diff --git a/trunk/src/rtmp/srs_protocol_rtmp.cpp b/trunk/src/rtmp/srs_protocol_rtmp.cpp
index d06ac9c63..29dfdc181 100644
--- a/trunk/src/rtmp/srs_protocol_rtmp.cpp
+++ b/trunk/src/rtmp/srs_protocol_rtmp.cpp
@@ -947,15 +947,22 @@ int SrsRtmpServer::identify_client(int stream_id, SrsRtmpConnType& type, string&
     while (true) {
         SrsMessage* msg = NULL;
         if ((ret = protocol->recv_message(&msg)) != ERROR_SUCCESS) {
-            srs_error("recv identify client message failed. ret=%d", ret);
+            if (!srs_is_client_gracefully_close(ret)) {
+                srs_error("recv identify client message failed. ret=%d", ret);
+            }
             return ret;
         }
 
         SrsAutoFree(SrsMessage, msg);
-
-        if (!msg->header.is_amf0_command() && !msg->header.is_amf3_command()) {
+        SrsMessageHeader& h = msg->header;
+        
+        if (h.is_ackledgement() || h.is_set_chunk_size() || h.is_window_ackledgement_size() || h.is_user_control_message()) {
+            continue;
+        }
+        
+        if (!h.is_amf0_command() && !h.is_amf3_command()) {
             srs_trace("identify ignore messages except "
-                "AMF0/AMF3 command message. type=%#x", msg->header.message_type);
+                "AMF0/AMF3 command message. type=%#x", h.message_type);
             continue;
         }
         
@@ -1335,15 +1342,22 @@ int SrsRtmpServer::identify_create_stream_client(SrsCreateStreamPacket* req, int
     while (true) {
         SrsMessage* msg = NULL;
         if ((ret = protocol->recv_message(&msg)) != ERROR_SUCCESS) {
-            srs_error("recv identify client message failed. ret=%d", ret);
+            if (!srs_is_client_gracefully_close(ret)) {
+                srs_error("recv identify client message failed. ret=%d", ret);
+            }
             return ret;
         }
 
         SrsAutoFree(SrsMessage, msg);
-
-        if (!msg->header.is_amf0_command() && !msg->header.is_amf3_command()) {
+        SrsMessageHeader& h = msg->header;
+        
+        if (h.is_ackledgement() || h.is_set_chunk_size() || h.is_window_ackledgement_size() || h.is_user_control_message()) {
+            continue;
+        }
+    
+        if (!h.is_amf0_command() && !h.is_amf3_command()) {
             srs_trace("identify ignore messages except "
-                "AMF0/AMF3 command message. type=%#x", msg->header.message_type);
+                "AMF0/AMF3 command message. type=%#x", h.message_type);
             continue;
         }
         
@@ -1408,7 +1422,7 @@ int SrsRtmpServer::identify_play_client(SrsPlayPacket* req, SrsRtmpConnType& typ
     stream_name = req->stream_name;
     duration = req->duration;
     
-    srs_trace("identity client type=play, stream_name=%s, duration=%.2f", stream_name.c_str(), duration);
+    srs_info("identity client type=play, stream_name=%s, duration=%.2f", stream_name.c_str(), duration);
 
     return ret;
 }
diff --git a/trunk/src/rtmp/srs_protocol_rtmp_stack.cpp b/trunk/src/rtmp/srs_protocol_rtmp_stack.cpp
index 786a32ade..dbbc7a8cd 100644
--- a/trunk/src/rtmp/srs_protocol_rtmp_stack.cpp
+++ b/trunk/src/rtmp/srs_protocol_rtmp_stack.cpp
@@ -719,7 +719,9 @@ int SrsProtocol::do_decode_message(SrsMessageHeader& header, SrsStream* stream,
         *ppacket = packet = new SrsSetChunkSizePacket();
         return packet->decode(stream);
     } else {
-        srs_trace("drop unknown message, type=%d", header.message_type);
+        if (!header.is_set_peer_bandwidth()) {
+            srs_trace("drop unknown message, type=%d", header.message_type);
+        }
     }
     
     return ret;
@@ -1289,7 +1291,10 @@ int SrsProtocol::on_recv_message(SrsMessage* msg)
             
             if (pkt->ackowledgement_window_size > 0) {
                 in_ack_size.ack_window_size = pkt->ackowledgement_window_size;
-                srs_trace("set ack window size to %d", pkt->ackowledgement_window_size);
+                // @remakr, we ignore this message, for user noneed to care.
+                // but it's important for dev, for client/server will block if required 
+                // ack msg not arrived.
+                srs_info("set ack window size to %d", pkt->ackowledgement_window_size);
             } else {
                 srs_warn("ignored. set ack window size is %d", pkt->ackowledgement_window_size);
             }
@@ -1301,7 +1306,7 @@ int SrsProtocol::on_recv_message(SrsMessage* msg)
             
             in_chunk_size = pkt->chunk_size;
             
-            srs_trace("set input chunk size to %d", pkt->chunk_size);
+            srs_trace("input chunk size to %d", pkt->chunk_size);
             break;
         }
         case RTMP_MSG_UserControlMessage: {
@@ -1339,7 +1344,7 @@ int SrsProtocol::on_send_message(SrsMessage* msg, SrsPacket* packet)
             
             out_chunk_size = pkt->chunk_size;
             
-            srs_trace("set output chunk size to %d", pkt->chunk_size);
+            srs_trace("out chunk size to %d", pkt->chunk_size);
             break;
         }
         case RTMP_MSG_AMF0CommandMessage:
@@ -1473,6 +1478,11 @@ bool SrsMessageHeader::is_user_control_message()
     return message_type == RTMP_MSG_UserControlMessage;
 }
 
+bool SrsMessageHeader::is_set_peer_bandwidth()
+{
+    return message_type == RTMP_MSG_SetPeerBandwidth;
+}
+
 bool SrsMessageHeader::is_aggregate()
 {
     return message_type == RTMP_MSG_AggregateMessage;
diff --git a/trunk/src/rtmp/srs_protocol_rtmp_stack.hpp b/trunk/src/rtmp/srs_protocol_rtmp_stack.hpp
index d63ba0d59..7222aebde 100644
--- a/trunk/src/rtmp/srs_protocol_rtmp_stack.hpp
+++ b/trunk/src/rtmp/srs_protocol_rtmp_stack.hpp
@@ -278,6 +278,7 @@ public:
     bool is_ackledgement();
     bool is_set_chunk_size();
     bool is_user_control_message();
+    bool is_set_peer_bandwidth();
     bool is_aggregate();
     
     void initialize_amf0_script(int size, int stream);