mirror of
https://github.com/varun-r-mallya/py-libp2p.git
synced 2025-12-31 20:36:24 +00:00
Refactor P2PWebSocketConnection and WebsocketTransport constructors for improved readability. Clean up whitespace and enhance logging for connection management.
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@ -13,12 +13,17 @@ class P2PWebSocketConnection(ReadWriteCloser):
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"""
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Wraps a WebSocketConnection to provide the raw stream interface
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that libp2p protocols expect.
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Implements production-ready buffer management and flow control
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as recommended in the libp2p WebSocket specification.
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"""
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def __init__(self, ws_connection: Any, ws_context: Any = None, max_buffered_amount: int = 4 * 1024 * 1024) -> None:
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def __init__(
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self,
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ws_connection: Any,
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ws_context: Any = None,
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max_buffered_amount: int = 4 * 1024 * 1024,
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) -> None:
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self._ws_connection = ws_connection
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self._ws_context = ws_context
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self._read_buffer = b""
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@ -31,23 +36,24 @@ class P2PWebSocketConnection(ReadWriteCloser):
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"""Write data with flow control and buffer management"""
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if self._closed:
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raise IOException("Connection is closed")
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async with self._write_lock:
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try:
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logger.debug(f"WebSocket writing {len(data)} bytes")
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# Check buffer amount for flow control
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if hasattr(self._ws_connection, 'bufferedAmount'):
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if hasattr(self._ws_connection, "bufferedAmount"):
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buffered = self._ws_connection.bufferedAmount
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if buffered > self._max_buffered_amount:
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logger.warning(f"WebSocket buffer full: {buffered} bytes")
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# In production, you might want to wait or implement backpressure
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# In production, you might want to
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# wait or implement backpressure
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# For now, we'll continue but log the warning
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# Send as a binary WebSocket message
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await self._ws_connection.send_message(data)
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logger.debug(f"WebSocket wrote {len(data)} bytes successfully")
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except Exception as e:
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logger.error(f"WebSocket write failed: {e}")
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self._closed = True
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@ -147,7 +153,7 @@ class P2PWebSocketConnection(ReadWriteCloser):
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"""Close the WebSocket connection with proper cleanup"""
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if self._closed:
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return
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self._closed = True
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try:
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# Close the WebSocket connection
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@ -157,7 +163,7 @@ class P2PWebSocketConnection(ReadWriteCloser):
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await self._ws_context.__aexit__(None, None, None)
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except Exception as e:
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logger.error(f"Error closing WebSocket connection: {e}")
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def is_closed(self) -> bool:
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"""Check if the connection is closed"""
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return self._closed
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@ -17,7 +17,7 @@ logger = logging.getLogger(__name__)
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class WebsocketTransport(ITransport):
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"""
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Libp2p WebSocket transport: dial and listen on /ip4/.../tcp/.../ws
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Implements production-ready WebSocket transport with:
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- Flow control and buffer management
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- Connection limits and rate limiting
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@ -25,7 +25,9 @@ class WebsocketTransport(ITransport):
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- Support for both WS and WSS protocols
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"""
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def __init__(self, upgrader: TransportUpgrader, max_buffered_amount: int = 4 * 1024 * 1024):
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def __init__(
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self, upgrader: TransportUpgrader, max_buffered_amount: int = 4 * 1024 * 1024
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):
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self._upgrader = upgrader
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self._max_buffered_amount = max_buffered_amount
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self._connection_count = 0
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@ -57,21 +59,21 @@ class WebsocketTransport(ITransport):
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# Check connection limits
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if self._connection_count >= self._max_connections:
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raise OpenConnectionError(f"Maximum connections reached: {self._max_connections}")
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raise OpenConnectionError(
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f"Maximum connections reached: {self._max_connections}"
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)
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# Use the context manager but don't exit it immediately
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# The connection will be closed when the RawConnection is closed
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ws_context = open_websocket_url(ws_url)
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ws = await ws_context.__aenter__()
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conn = P2PWebSocketConnection(
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ws,
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ws_context,
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max_buffered_amount=self._max_buffered_amount
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ws, ws_context, max_buffered_amount=self._max_buffered_amount
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) # type: ignore[attr-defined]
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self._connection_count += 1
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logger.debug(f"WebSocket connection established. Total connections: {self._connection_count}")
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logger.debug(f"Total connections: {self._connection_count}")
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return RawConnection(conn, initiator=True)
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except Exception as e:
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logger.error(f"Failed to dial WebSocket {maddr}: {e}")
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@ -16,8 +16,6 @@ from libp2p.peer.id import ID
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from libp2p.peer.peerinfo import PeerInfo
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from libp2p.peer.peerstore import PeerStore
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from libp2p.security.insecure.transport import InsecureTransport
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from libp2p.security.noise.transport import Transport as NoiseTransport
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from libp2p.crypto.ed25519 import create_new_key_pair as create_ed25519_key_pair
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from libp2p.stream_muxer.yamux.yamux import Yamux
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from libp2p.transport.upgrader import TransportUpgrader
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from libp2p.transport.websocket.transport import WebsocketTransport
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