Python Network Programming

Python Network Programming

Today I learned a python network programming, which is relatively simple, that is, the basic steps. create -- bind --- listen --> receive/send ----> close.

I also learned a Tcp Server programming framework that supports multiple socket connections. It also works. The simplest framework is TCPServer + BaseRequestHandler :. A simple example is as follows:

Import SocketServer # This program can support multiple client connection requests class MyRequestHandler (SocketServer. baseRequestHandler): # self. the request is actually a socketdef handle (self): addr = self. request. getpeername () print got connection from, addrwhile True: # When the client actively disconnects, self. recv (1024) throws an exception. try: # read 1024 byte each time, and remove empty letter including (space tab) data = self. request. recv (1, 1024 ). strip () if not data: breakprint receive from (% s): % s % (se Lf. client_address, data) self. request. sendall (data. upper () failed T: traceback. print_exc () breakself. request. close () addr = ('2017. 0.0.1 ', 8000) server = SocketServer. threadingTCPServer (addr, MyRequestHandler) server. serve_forever () # Just call handle_request () # server. handle_request () # process link requests one by one.

The client is:

# *_* coding=gb2312 *-*import timeimport sysimport loggingfrom socket import *host = 127.0.0.1port = 8000def Test():global host,portbufsize=1024#print Hello world#logging.warn(there are some error)client =socket(AF_INET,SOCK_STREAM)client.connect((host,port))while True:www.bkjia.comdata =raw_input(Please input sending data:)if not data or data ==exit:breakclient.send(%s % data)data =client.recv(bufsize)if not data:breakprint data.strip()client.close()if __name__ == '__main__':Test()