added WebSocket transport support

Signed-off-by: GautamBytes <manchandanigautam@gmail.com>

libp2p/transport/websocket/connection.py

@@ -0,0 +1,49 @@
+from trio.abc import Stream
+
+from libp2p.io.abc import ReadWriteCloser
+from libp2p.io.exceptions import IOException
+
+
+class P2PWebSocketConnection(ReadWriteCloser):
+    """
+    Wraps a raw trio.abc.Stream from an established websocket connection.
+    This bypasses message-framing issues and provides the raw stream
+    that libp2p protocols expect.
+    """
+
+    _stream: Stream
+
+    def __init__(self, stream: Stream):
+        self._stream = stream
+
+    async def write(self, data: bytes) -> None:
+        try:
+            await self._stream.send_all(data)
+        except Exception as e:
+            raise IOException from e
+
+    async def read(self, n: int | None = None) -> bytes:
+        """
+        Read up to n bytes (if n is given), else read up to 64KiB.
+        """
+        try:
+            if n is None:
+                # read a reasonable chunk
+                return await self._stream.receive_some(2**16)
+            return await self._stream.receive_some(n)
+        except Exception as e:
+            raise IOException from e
+
+    async def close(self) -> None:
+        await self._stream.aclose()
+
+    def get_remote_address(self) -> tuple[str, int] | None:
+        sock = getattr(self._stream, "socket", None)
+        if sock:
+            try:
+                addr = sock.getpeername()
+                if isinstance(addr, tuple) and len(addr) >= 2:
+                    return str(addr[0]), int(addr[1])
+            except OSError:
+                return None
+        return None