diff --git a/trunk/research/librtmp/srs_play.c b/trunk/research/librtmp/srs_play.c
index 7bb0ef796..9a22908dd 100644
--- a/trunk/research/librtmp/srs_play.c
+++ b/trunk/research/librtmp/srs_play.c
@@ -38,15 +38,24 @@ int main(int argc, char** argv)
     u_int32_t timestamp = 0;
     char* data;
     
+    if (argc <= 1) {
+        printf("play stream on RTMP server\n"
+            "Usage: %s <rtmp_url>\n"
+            "   rtmp_url     RTMP stream url to play\n"
+            "For example:\n"
+            "   %s rtmp://127.0.0.1:1935/live/livestream\n",
+            argv[0]);
+        int ret = 1;
+        exit(ret);
+        return ret;
+    }
+    
+    rtmp = srs_rtmp_create(argv[1]);
+    
     printf("suck rtmp stream like rtmpdump\n");
     printf("srs(simple-rtmp-server) client librtmp library.\n");
     printf("version: %d.%d.%d\n", srs_version_major(), srs_version_minor(), srs_version_revision());
-    
-    if (argc > 1) {
-        rtmp = srs_rtmp_create(argv[1]);
-    } else {
-        rtmp = srs_rtmp_create("rtmp://127.0.0.1:1935/live/livestream");
-    }
+    printf("rtmp url: %s\n", rtmp);
     
     if (srs_simple_handshake(rtmp) != 0) {
         printf("simple handshake failed.\n");
diff --git a/trunk/src/app/srs_app_edge.cpp b/trunk/src/app/srs_app_edge.cpp
index d6c39ff4c..11fc13645 100644
--- a/trunk/src/app/srs_app_edge.cpp
+++ b/trunk/src/app/srs_app_edge.cpp
@@ -324,7 +324,7 @@ int SrsEdgeIngester::connect_server()
     addr.sin_port = htons(port);
     addr.sin_addr.s_addr = inet_addr(ip.c_str());
     
-    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT) == -1){
+    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), SRS_EDGE_INGESTER_TIMEOUT_US) == -1){
         ret = ERROR_ST_CONNECT;
         srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
         return ret;
@@ -605,7 +605,7 @@ int SrsEdgeForwarder::connect_server()
     addr.sin_port = htons(port);
     addr.sin_addr.s_addr = inet_addr(ip.c_str());
     
-    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT) == -1){
+    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), SRS_EDGE_FORWARDER_TIMEOUT_US) == -1){
         ret = ERROR_ST_CONNECT;
         srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
         return ret;
diff --git a/trunk/src/app/srs_app_forward.cpp b/trunk/src/app/srs_app_forward.cpp
index f469a1038..ed4c8e768 100644
--- a/trunk/src/app/srs_app_forward.cpp
+++ b/trunk/src/app/srs_app_forward.cpp
@@ -298,7 +298,7 @@ int SrsForwarder::connect_server()
     addr.sin_port = htons(port);
     addr.sin_addr.s_addr = inet_addr(ip.c_str());
     
-    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT) == -1){
+    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), SRS_FORWARDER_SLEEP_US) == -1){
         ret = ERROR_ST_CONNECT;
         srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
         return ret;
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index b2d849906..5574688b8 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 "115"
+#define VERSION_REVISION "116"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"