Python UDP Socket

Socket (socket), the endpoint of the Transport Layer communication, consisting of an IP and a port number (Ip,port), which can be used to accurately locate and communicate with the process on the server through the socket

python2.6 implementation, based on af_inet (network sockets)
Type Socket_stream (TCP socket), Socket_dgram (UDP socket)

UDP socket implementation is more simple than TCP, there is no process of establishing a connection, the server infinite loop to receive data, processing data return, the client does not need to establish a communication connection,
Send data directly to receive data

UDP Socket Communication Logic
UDP Service side: Create socket>>> bind the ground server >>> infinite loop >>> receive information return information
UDP client: Create socket>>> send information to receive information

Python UDP Socket Service side

1     #!/usr/bin/python2     #-*-coding utf-8-*-3 4     #filename:Udpsocket.py5     #Author:6     #Create date:2015-03-257     #Modify Date:8     #DESCRIPTION:UDP Socket9 Ten     #Import Stander Lib One      fromSocketImportsocket, af_inet, Sock_dgram A     ImportSYS -Sys.path.append ('..' ) -  the  -     classudpsocket (): -         " " - Udpsocket class, set up UDP socket server + Usage: - p = udpsocket.udpsocket () + P.listen () A Infinite loop Listening port, process rewrite data processing method at         " " -          -         def __init__(self): -             " " - Initialize, establish SOCKET,IP port bindings -             " " inSelf.udpserversocket =socket (af_inet, SOCK_DGRAM) -Self.udpServerSocket.bind (('127.0.0.1', 20015) ) toSelf.buffer_size = 1024#buffer is 1k +              -              the         defreceive (self): *             " " $ collect data from the portPanax Notoginseng             " " -Raw_data, addr =self.udpServerSocket.recvfrom (int (self.buffer_size)) the             Print 'Conn from:', addr +             Print 'receive from UDP client:', Raw_data A              the             return(raw_data, addr) +              -  $         defprocess (self, data): $             " " - socket transfer data processing, inheritance override this function -             " " theresult =Data -             returnresultWuyi  the          -         defSend (self, addr, result): Wu             " " - return information About             " " $ self.udpServerSocket.sendto (result, addr) -              -          -         defListen (self): A             " " + listening port, infinite loop the             " " -              whileTrue: $                 Print 'Wait for Connect' theSocket_data = Self.receive ()#Receive Data theresult = Self.process (socket_data[0])#processing the received information theSelf.send (socket_data[1], str (result))#Return Data the self.close () -          in          the         defClose (self): the             " " About Close Connection the             " " the self.udpServerSocket.close () the  +              -         def __del__(self): the self.close ()Bayi              the  the     if __name__=='__main__': -p =Udpsocket () -P.listen ()

Python UDP Socket Client

1     #!/usr/bin/env python2     #-*-coding:utf-8-*-3 4      fromSocketImport*5 6HOST ='127.0.0.1'       #Host7PORT = 20015#Port8Buffsize = 1024#Buffer size9ADDR = (HOST, PORT)#AddressTen  One     #set up socket monitoring AUdpclientsocket =socket (af_inet, SOCK_DGRAM) -  -     #Transmit received data theUdpclientsocket.sendto ('Hello', ADDR) -data, addr =Udpclientsocket.recvfrom (buffsize) -     Print 'Receive data:', the data -     #data, addr = Udpclientsocket.recvfrom (buffsize) +Udpclientsocket.close ()

Python UDP Socket