Max retries exceeded with url 错误
2022-06-12
python
1575
爬虫多次访问同一个网站一段时间后会出现错误 HTTPConnectionPool(host:XX)Max retries exceeded with url '<requests.packages.urllib3.connection.HTTPConnection object at XXXX>: Failed to establish a new connection: [Errno 99] Cannot assign requested address'
是因为在每次数据传输前客户端要和服务器建立TCP连接,为节省传输消耗,默认为keep-alive,即连接一次,传输多次,然而在多次访问后不能结束并回到连接池中,导致不能产生新的连接
headers中的Connection默认为keep-alive,
将header中的Connection一项置为close
headers = { 'Connection': 'close',} r = requests.get(url, headers=headers)
转载链接:https://www.jianshu.com/p/6edb5b987de7
很赞哦! (0)
相关文章
文章评论
-
-
-
0条评论