fix #398, set recv timeout for http connection.

@@ -523,6 +523,10 @@ int SrsHttpApi::do_cycle()
     // underlayer socket
     SrsStSocket skt(stfd);
     
+    // set the recv timeout, for some clients never disconnect the connection.
+    // @see https://github.com/simple-rtmp-server/srs/issues/398
+    skt.set_recv_timeout(SRS_HTTP_RECV_TIMEOUT_US);
+    
     // process http messages.
     for (;;) {
         SrsHttpMessage* req = NULL;

@@ -1383,6 +1383,10 @@ int SrsHttpConn::do_cycle()
     // underlayer socket
     SrsStSocket skt(stfd);
     
+    // set the recv timeout, for some clients never disconnect the connection.
+    // @see https://github.com/simple-rtmp-server/srs/issues/398
+    skt.set_recv_timeout(SRS_HTTP_RECV_TIMEOUT_US);
+    
     // process http messages.
     for (;;) {
         SrsHttpMessage* req = NULL;

@@ -201,6 +201,9 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // query string seprator
 #define SRS_CONSTS_HTTP_QUERY_SEP '?'
 
+// the default recv timeout.
+#define SRS_HTTP_RECV_TIMEOUT_US 60 * 1000 * 1000
+
 // 6.1.1 Status Code and Reason Phrase
 #define SRS_CONSTS_HTTP_Continue                       100
 #define SRS_CONSTS_HTTP_SwitchingProtocols             101

@@ -33,6 +33,7 @@ bool srs_is_client_gracefully_close(int error_code)
 {
     return error_code == ERROR_SOCKET_READ
         || error_code == ERROR_SOCKET_READ_FULLY
-        || error_code == ERROR_SOCKET_WRITE;
+        || error_code == ERROR_SOCKET_WRITE
+        || error_code == ERROR_SOCKET_TIMEOUT;
 }