python-3.x - 如何在不尝试的情况下重试由python请求库中的对等连接错误重置的104个连接，除了

Question

我有以下 Session 对象:

    import requests
    from requests.adapters import Retry, HTTPAdapter
    from requests.sessions import Session

    retry_strategy: Retry = Retry(
        total=5,
        status_forcelist=[429, 500, 502, 503, 504],
        allowed_methods=["HEAD", "GET", "OPTIONS", "POST"],
        backoff_factor=1
    )
    http_adapter = HTTPAdapter(max_retries=retry_strategy)
    session = requests.Session()
    session.mount("https://", http_adapter)

有时服务器似乎会中断与 RST TCP 数据包的连接，导致以下错误:

{"isError": true,
 "type": "ConnectionError",
 "message": "[Errno 104] Connection reset by peer",
 "traceback": "...  omitted for brevity ...
    File "/var/task/requests/sessions.py", line 590, in post
    return self.request('POST', url, data=data, json=json, **kwargs)    
    File "/var/task/requests/sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)   
    File "/var/task/requests/sessions.py", line 655, in send
    r = adapter.send(request, **kwargs) 
    File "/var/task/requests/adapters.py", line 498, in send
    raise ConnectionError(err, request=request)"
    

是否可以注入(inject) Retry Session 中的对象对象，以便此特定 ConnectionError是否自动重试？

有没有其他方法可以自动重试而无需任何额外的自定义逻辑，例如将其包装在 try... except 中声明或创建自定义 HTTPAdapter ?

我看过多篇关于 104 connection reset by peer errors 的帖子，但没有人问如何自动重试。这是为什么？我想我不会是唯一遇到这个问题的人吗？

Answer 1

给看看https://github.com/jd/tenacity
我通常做这样的事情

from tenacity import wait_exponential

@retry(wait=wait_exponential(multiplier=1, min=4, max=10))
    def wait_exponential_1():
        # my request here

您可以创建一个函数，该函数产生一个用坚韧包装的 session 。