Python 请求使用 keep-alive 加速
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Python requests speed up using keep-alive
提问by PaulOverflow
In the HTTP protocol you can send many requests in one socket using keep-alive and then receive the response from server at once, so that will significantly speed up whole process. Is there any way to do this in python requests lib? Or are there any other ways to speed this up that well using requests lib?
在 HTTP 协议中，您可以使用 keep-alive 在一个套接字中发送多个请求，然后立即从服务器接收响应，这将显着加快整个过程。在 python 请求库中有什么方法可以做到这一点吗？或者有没有其他方法可以使用请求库来加快速度？
采纳答案by metatoaster
Yes, there is. Use requests.Sessionand it will do keep-alive by default.
就在这里。使用requests.Session，它会在默认情况下保持活动状态。
I guess I should include a quick example:
我想我应该包括一个简单的例子：
import logging
import requests
logging.basicConfig(level=logging.DEBUG)
s = requests.Session()
s.get('http://httpbin.org/cookies/set/sessioncookie/123456789')
s.get('http://httpbin.org/cookies/set/anothercookie/123456789')
r = s.get("http://httpbin.org/cookies")
print(r.text)
You will note that these log message occur
您会注意到这些日志消息发生
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): httpbin.org
DEBUG:requests.packages.urllib3.connectionpool:"GET /cookies/set/sessioncookie/123456789 HTTP/1.1" 302 223
DEBUG:requests.packages.urllib3.connectionpool:"GET /cookies HTTP/1.1" 200 55
DEBUG:requests.packages.urllib3.connectionpool:"GET /cookies/set/anothercookie/123456789 HTTP/1.1" 302 223
DEBUG:requests.packages.urllib3.connectionpool:"GET /cookies HTTP/1.1" 200 90
DEBUG:requests.packages.urllib3.connectionpool:"GET /cookies HTTP/1.1" 200 90
If you wait a little while, and repeat the last getcall
如果您稍等片刻，然后重复上一次get通话
INFO:requests.packages.urllib3.connectionpool:Resetting dropped connection: httpbin.org
DEBUG:requests.packages.urllib3.connectionpool:"GET /cookies HTTP/1.1" 200 90
Note that it resets the dropped connection, i.e. reestablishing the connection to the server to make the new request.
请注意，它会重置已断开的连接，即重新建立与服务器的连接以发出新请求。
