it is normal for the same proxy ip, to request with requests, but the request with scrapy.FormRequest will time out

related codes

In [11]: r = requests.post("http://httpbin.org/post", proxies={"http": proxy_server, "https": proxy_server})
2018-07-10 14:10:04 [urllib3.connectionpool] DEBUG: Starting new HTTP connection (1): 113.128.26.187
2018-07-10 14:10:04 [urllib3.connectionpool] DEBUG: http://113.128.26.187:4352 "POST http://httpbin.org/post HTTP/1.1" 200 275

In [12]: r.text
Out[12]: "{"args":{},"data":"","files":{},"form":{},"headers":{"Accept":"*/*","Accept-Encoding":"gzip, deflate","Connection":"close","Content-Length":"0","Host":"httpbin.org","User-Agent":"python-requests/2.18.4"},"json":null,"origin":"113.128.26.187","url":"http://httpbin.org/post"}\n"

In [13]: proxy_server
Out[13]: "http://113.128.26.187:4352"

In [14]: req = scrapy.FormRequest("http://httpbin.org/post",formdata={"foo":"bar"}, meta={"proxy": proxy_server})

In [15]: fetch(req)
2018-07-10 14:13:58 [scrapy.downloadermiddlewares.retry] DEBUG: Retrying <POST http://httpbin.org/post> (failed 1 times): User timeout caused connection failure: Getting http://httpbin.org/post took longer than 180.0 seconds..

as shown in figure
2018-07-10 14:27:39 use FormRequest request

2018, 7, 10, 14, 28, 19Requests,ip