python network_error ai_generated partial

httpx.ConnectError: [Errno 111] 连接被拒绝

httpx.ConnectError: [Errno 111] Connection refused

ID: python/httpx-connect-error-all-connection-attempts-failed

其他格式: JSON · Markdown 中文 · English
80%修复率
83%置信度
0证据数
2024-09-02首次发现

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根因分析

目标主机/端口未接受 TCP 连接；服务器已关闭、端口错误或被防火墙阻止。

English

The target host/port is not accepting TCP connections; server is down, wrong port, or blocked by firewall.

generic

解决方案

  1. 85% 成功率 
    import httpx, asyncio
for delay in (1, 2, 4, 8):
    try:
        async with httpx.AsyncClient() as c:
            r = await c.get(url)
        break
    except httpx.ConnectError:
        await asyncio.sleep(delay)
  2. 88% 成功率 
    transport = httpx.AsyncHTTPTransport(retries=3)
async with httpx.AsyncClient(transport=transport) as c:
    r = await c.get(url)

无效尝试

常见但无效的做法:

  1. 90% 失败

    Connection refused is immediate; timeouts are irrelevant.

  2. 85% 失败

    The failure occurs before any HTTP exchange.