add rtmp specification

@@ -37,3 +37,17 @@ SrsProtocol::~SrsProtocol()
 {
 }
 
+int SrsProtocol::recv_message(SrsMessage** pmsg)
+{
+	int ret = ERROR_SUCCESS;
+	return ret;
+}
+
+SrsMessage::SrsMessage()
+{
+}
+
+SrsMessage::~SrsMessage()
+{
+}
+

@@ -32,6 +32,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <st.h>
 
+class SrsMessage;
+
 /**
 * the protocol provides the rtmp-message-protocol services,
 * to recv RTMP message from RTMP chunk stream,
@@ -45,6 +47,15 @@ public:
 	SrsProtocol(st_netfd_t client_stfd);
 	virtual ~SrsProtocol();
 public:
+	virtual int recv_message(SrsMessage** pmsg);
+};
+
+class SrsMessage
+{
+public:
+	SrsMessage();
+	virtual ~SrsMessage();
+public:
 };
 
 #endif
\ No newline at end of file