Adding RTMP functionality. Added RTMPServer class (incomplete)

sockets/rtmp_server.py

@@ -0,0 +1,149 @@
+import socket, threading, os, time, traceback, struct
+
+class RTMPClientState:
+    """Enumeration of RTMP client states."""
+    EPOCH = 0
+
+class RTMPServer:
+    def __init__(self, host='192.168.1.15', port=1935):
+        self.host = host
+        self.port = port
+        self.server_socket = None
+        self.is_running = True
+        self.clients = []
+
+    def start(self):
+        """Starts a basic server to display incoming packets."""
+        # Create a TCP socket
+        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.server_socket.bind((self.host, self.port))
+        self.server_socket.listen(1)
+        print(f"RTMP Server started on {self.host}:{self.port}. Waiting for connections...")
+
+        while self.is_running:
+            try:
+                client_socket, address = self.server_socket.accept()
+                print(f"Connection accepted from {address}")
+                client_thread = threading.Thread(target=self.handle_client, args=(client_socket,))
+                client_thread.daemon = True
+                client_thread.start()
+            except Exception as e:
+                print(f"Error accepting connection: {e}")
+                print(traceback.format_exc())
+                break
+
+    def handle_client(self, client_socket):
+        """
+        Handle an incoming RTMP client connection.
+
+        :param client_socket: The client socket object.
+        """
+        try:
+            # Perform RTMP handshake
+            if not self._attempt_handshake(client_socket):
+                print("Handshake failed.")
+                client_socket.close()
+                return
+
+            print("Handshake successful. Ready to handle RTMP stream.")
+        except Exception as e:
+            print(f"Error handling client: {e}")
+            print(traceback.format_exc())
+        finally:
+            client_socket.close()
+
+    def _attempt_handshake(self, client_socket):
+        """Performs the RTMP handshake with the client."""
+        # Receive C0 and C1 packets and validate
+        c0 = int.from_bytes(client_socket.recv(1))
+        if c0 != 3:
+            print("Invalid RTMP version.")
+            return False
+        
+        c1 = client_socket.recv(1536)
+        time_epoch = int.from_bytes(c1[:4])
+        zeros = int.from_bytes(c1[4:8])
+        random_bytes = c1[8:]
+
+        if zeros != 0:
+            print("Invalid C1 packet.")
+            return False
+
+        # Send S0
+        s0 = bytes([3])
+        client_socket.send(s0)
+
+        # Send S1
+        s1 = bytearray(c1)
+        server_random = os.urandom(1528)
+        current_timestamp = struct.pack(">I" ,int(time.time()))
+        s1[:4] = current_timestamp
+        s1[8:] = server_random
+        client_socket.send(bytes(s1))
+
+        # Receive C2
+        c2 = client_socket.recv(1536)
+        if c2[8:] != server_random:
+            print("Invalid C2 packet.")
+            return False
+    
+
+
+
+        # debug
+        print(f"Version: {c0}")
+        print(f"Epoch time: {time_epoch}")
+        print(f"Zeros: {zeros}")
+        #print(f"Random bytes: {random_bytes}")
+
+
+    def stop(self):
+        """
+        Stop the RTMP server.
+        """
+        self.is_running = False
+        if self.server_socket:
+            self.server_socket.close()
+        print("RTMP Server stopped.")
+
+
+def start_rtmp_server(host='127.0.0.1', port=1935):
+    """Starts a basic RTMP server to display incoming packets."""
+    try:
+        # Create a TCP socket
+        server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        server_socket.bind((host, port))
+        server_socket.listen(1)
+        print(f"RTMP server started on {host}:{port}. Waiting for connections...")
+
+        # Accept a connection
+        conn, addr = server_socket.accept()
+        print(f"Connection established with {addr}")
+
+        while True:
+            # Receive RTMP C0 and C1 packets
+            data = conn.recv(1)
+            if not data:
+                print("Connection closed by client.")
+                break
+            
+            # Display the received RTMP packets
+            print(f"Version: {int.from_bytes(data)}")
+            break
+
+    except KeyboardInterrupt:
+        print("\nServer shutting down.")
+    except Exception as e:
+        print(f"Error: {e}")
+    finally:
+        server_socket.close()
+        print("Server socket closed.")
+
+if __name__ == "__main__":
+    c = RTMPServer()
+    try:
+        c.start()
+    except KeyboardInterrupt:
+        print("Shutting down RTMP Server...")
+        c.stop()
+