本指南将教您如何使用 Python 创建 WebSocket 代理服务器。
pip install websockets
import asyncio import websockets import json class WebSocketProxy: def init(self, source_url, symbols): self.source_url = source_url self.clients = set() self.symbols = symbols self.valid_user_key = "yourValidUserKey" # Single valid user key for authentication async def on_open(self, ws): print("Connected to source") symbols_str = ",".join(self.symbols.keys()) init_message = f"{{"userKey":"your_api_key", "symbol":"{symbols_str}"}}" await ws.send(init_message)
async def client_handler(self, websocket, path): try: # Wait for a message that should contain the authentication key auth_message = await asyncio.wait_for(websocket.recv(), timeout=10) auth_data = json.loads(auth_message) user_key = auth_data.get("userKey") if user_key == self.valid_user_key: self.clients.add(websocket) print(f"Client authenticated with key: {user_key}") try: await websocket.wait_closed() finally: self.clients.remove(websocket) else: print("Authentication failed") await websocket.close(reason="Authentication failed") except (asyncio.TimeoutError, json.JSONDecodeError, KeyError): print("Failed to authenticate") await websocket.close(reason="Failed to authenticate")
async def source_handler(self): async with websockets.connect(self.source_url) as websocket: await self.on_open(websocket) async for message in websocket: await self.broadcast(message) async def broadcast(self, message): if self.clients: await asyncio.gather(*(client.send(message) for client in self.clients))
def run(self, host="localhost", port=8765): start_server = websockets.serve(self.client_handler, host, port) asyncio.get_event_loop().run_until_complete(start_server) asyncio.get_event_loop().run_until_complete(self.source_handler()) asyncio.get_event_loop().run_forever() if name == "main": symbols = {"EURUSD": {}, "GBPUSD": {}, "USDJPY": {}, "AUDUSD": {}, "USDCAD": {}} source_url = "ws://example.com/source" proxy = WebSocketProxy(source_url, symbols) proxy.run()
您已经成功开发了一个基于Python的WebSocket代理服务器。该服务器可以验证客户端身份,维护与指定数据源的持久连接,并将从源接收到的消息有效地分发给所有经过验证的客户端。事实证明,对于需要将数据从单一来源安全即时传播到不同用户群的应用程序来说,此功能非常宝贵。
彻底的服务器测试对于确保最佳性能和可靠性至关重要。它验证其对连接和消息传输的正确处理。为了提高效率,请考虑实施负载平衡机制和自定义连接标头。最后,建议将服务器部署到适合生产部署的环境,例如专门为容纳长期网络连接而设计的云服务。
另外,请查看我们网站上最初发布的教程:使用 Python 代理扩展外汇 WebSocket
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