python socket tutorial

Python provides two basic socket modules.The first one is the Socket, which provides the standard BSD Sockets API.The second is Socketserver, which provides a server-centric class that simplifies the development of Web servers.1. Socket data typeThe socket type is the same a

Python socket UDP BroadcastFrom socket import * import time HOST = ' Count=10while count>=0: count-=1 data= ' sstoptuling ' if not data: break print " Sending,%s "%data udpclisock.sendto (data,addr) time.sleep (1) udpclisock.close () exit (0)Python

Python-socket module, pythonsocket Socket server #! /Usr/bin/env python #-*-coding: UTF-8-*-import socketip_port = ('2017. 0.0.1 ', 9999) sk = socket. socket () sk. bind (ip_port) sk. listen (5) while True: print ('server waiting.

Python uses Raw Socket for Ethernet frame injection and pythonraw1. Frame Injection For introduction to Ethernet frames and Raw sockets, refer to a previous blog post that uses Raw Socket for Ethernet frame sniffing. Frame injection features:　　 Packages in the original data format can be injected into the network. It is very powerful in simulating network resp

=socket.socket (Socket.af_inet,socket. sock_raw,255)S.setsockopt (0, socket. IP_HDRINCL, 1)If this is set under OS X, the invalid argument error is reported in the location of the call to SendTo (), and then the problem is found on the third parameter 255 of the first line, which is testedUnder OS X, this parameter is set to 0 or 255 to be an error.Under Windows, this parameter is set to 0 or 255 without er

)! = 0)Printf ("wsastartup error! /N ");Client = socket (af_inet, sock_stream, ipproto_tcp );ADDR. sin_family = af_inet;ADDR. sin_port = htons (port );ADDR. sin_addr.s_addr = inet_addr (szip );If (connect (client, (struct sockaddr *) ADDR, sizeof (ADDR ))! = 0)Printf ("Connect error/N ");For (INT I = 0; I {Send (client, szip, strlen (szip), 0 );Sleep (10 );} Wsacleanup (); Getchar (); Return 0;} Python

A detailed explanation of the handshake between the client and the server of python Socket, pythonsocket In simple learning, socket is used to establish a connection between the client and the server and send data. 1. Client socketClient. py code Import socket s = socket.

", data_size)) Conn.send (head_bytes) #发送数据部分 conn.send (out_res) conn.send (err_res) excEPT exception:break conn.close () phone.close () #客户端import socketimport structimport Jsonphone=socket.socket (s Ocket.af_inet,socket. SOCK_STREAM) ip_port= ("127.168.0.1", 8080) phone.connect (ip_port) #通信循环while True: #发消息 cmd=input (">>"). Strip () If not cmd:continue phone.send (bytes (cmd,encoding= "UTF8")) #收报头的长度 Head_struct=phone.recv (4) head_len=struc

packet service socket.af_unix 3, Connection Server Client.connect ((' www.baidu.com ') #使用元组tuple的方式传递两个参数 4, send data client.send (b ' Hello ') #传送的数据必须为字节的方式 5, receiving data = CLIENT.RECV (1024x768) #每次接收1K数据, data 6, close Socketclient.close () server side: 1, select protocol: Server = Socket.socket () 2, listening port: server.bind ((' localhost ') # Using tuple tuples to pass the Server.listen (3) #监听端口, and set the maximum number of waiting con

Python socket programming TCPPython socket programming TCPby wuxyServer. py Import socketimport commandsBUF_SIZE = 1024server_addr = ('2017. 0.0.1 ', 8888) server = socket. socket (socket. AF_INET,

On the server side, socket () returns the socket for listening (listen) and accept, which cannot be used to send and receive data between clients.Accept () accepts a connection request from a client and returns a new socket that differs from the socket () that is returned by the so