python-sockets

I am trying to reverse dns a list of IPs using socket.gethostbyaddr() in python, which returns 'Unknown Host' for some values, but using dig for the same ip returns the Hostname. Also, dig seems to be significantly faster than using python module, is there any specific reasons for that? import socket # This returns 'Unknown Host' name, alias, addresslist = socket.gethostbyaddr('114.143.51.197') I'm sorry, but you are mistaken. 114.143.51.197 does not have a PTR record... therefore socket.gethostbyaddr() should throw an error... you certainly need a try / except clause that traps for socket

This question already has an answer here: Requests, bind to an ip 1 answer I'm trying to learn some python, and i'm having issues with the logic in what I want to test. Currently my code is written in a way that binding to source_address doesn't change when the process starts import socket import requests real_create_conn = socket.create_connection def set_src_addr(*args): address, timeout = args[0], args[1] source_address = ('201.X.X.1', 0) return real_create_conn(address, timeout, source_address) socket.create_connection = set_src_addr r = requests.get('http://www.mywebpage.com/main') print

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? Yes, there is. Use requests.Session and it will do keep-alive by default . I guess I should include a quick example: import logging import requests logging.basicConfig(level=logging.DEBUG) s = requests.Session() s.get('http://httpbin.org/cookies/set/sessioncookie/123456789') s.get('http:/

How can I make a coroutine stop with timeout? I don't understand why asyncio.wait_for() doesn't work for me. I have such piece of code (planning to make my implementation of telnet client): def expect(self, pattern, timeout=20): if type(pattern) == str: pattern = pattern.encode('ascii', 'ignore') return self.loop.run_until_complete(asyncio.wait_for(self.asyncxpect(pattern), timeout)) async def asyncxpect(self, pattern): #receives data in a cumulative way until match is found regexp = re.compile(b'(?P<payload>[\s\S]*)(?P<pattern>%s)' %pattern) self.buffer = b'' while True: # add timeout # add