python network_error ai_generated partial

fastapi.exceptions.WebSocketRequestValidationError: 400 错误的 WebSocket 请求

fastapi.exceptions.WebSocketRequestValidationError: 400 Bad WebSocket Request

ID: python/fastapi-websocket-validation-error

其他格式: JSON · Markdown 中文 · English
80%修复率
80%置信度
0证据数
2025-04-02首次发现

版本兼容性

版本状态引入弃用备注
3.x active — — —

根因分析

WebSocket 连接请求具有无效的参数或头部。

English

The WebSocket connection request has invalid parameters or headers.

generic

解决方案

  1. 90% 成功率 
    Ensure the WebSocket URL includes the correct subprotocols and headers: websocket.connect("ws://...", subprotocols=["chat"])
  2. 85% 成功率 
    Handle the validation error in the endpoint: except WebSocketRequestValidationError as e: await websocket.close(code=1002)

无效尝试

常见但无效的做法:

  1. 70% 失败

    This can lead to security vulnerabilities or broken connections.

  2. 90% 失败

    This breaks the WebSocket functionality entirely.