python socket programming

Socket syntax and relatedThe socket is for HTTP, TCP/IP, send/receive ..... And so on the encapsulation of the underlying network protocol, the socket is an implementation of the "Open-write/read-close" mode.Socket implementation send data (send), receive data (receive)Socket conceptThe

The following begins the construction of the HTTP packet, The IP layer and TCP layer use Python's impacket Library, and the HTTP content is self-populated. Copy the Code code as follows: #!/usr/bin/env python #------------------------------------------------------------------------------- # Name:raw_http.py # Purpose:construct a raw HTTP GET packet # # Author:yangjun # # created:08/02/2014 # Copyright: (c) Yangjun 2014 # Licence: #----------------

Directory: Socket syntax and related Socketserver for multiple concurrency Socket concept:The socket is essentially a channel between 2 computers connected to each other. Two computers through this channel to achieve the transmission of dataEstablishing a socket must have at least 2 ends: one server, one clie

Reply: The message has been received! ", encoding ="GBK") self.request.send (ret_msg)Print(STR (msg, encoding ="GBK")) Breakif __name__=='__main__': fromThreadingImportThread nworkers= 16#bind socket server IP and port numberserv = TCPServer (("', 20000), Echohandler) forNinchRange (nworkers): t= Thread (target=serv.serve_forever) T.daemon=True T.start () serv.serve_forever ()The server side (Windows system) is running, note to se

() = = "QUIT") if Stop_chat:break topclientsock.close () s Elf.sock.close () if __name__ = = ' __main__ ': Serverdemo = Dserver () Serverdemo.listener ()Client:#coding: Utf-8from Socket import *class dclient (): def __init__ (self): self . HOST = ' 192.168.37.129 ' self . PORT = 1122 Self . BUFSIZE = 1024x768 self . ADDR = (self. HOST, self. PORT) def Listener (self): self.client =

The first thing to note is that this is not a very esoteric socket programming, but it will be analyzed in one of the simplest socket programming chat room under the processing of several special exceptions, the code is as follows: Service side: Import sockethost = "" PORT = 8870sk = Socket.socket (socket.af_inet,

Service side:1 fromSocketImport*2 3Server =socket (af_inet, SOCK_DGRAM)4Server.bind (('127.0.0.1', 8080))5 6 whileTrue:7data, client_addr = Server.recvfrom (1024)8 Print(data, client_addr)9 Ten server.sendto (Data.upper (), client_addr) One AServer.close ()Client:1 fromSocketImport*2 3Client =socket (af_inet, SOCK_DGRAM)4 5 whileTrue:6msg = input (">>:"). Strip ()7Client.sendto (Msg.encode ('Utf-8'

be re-sent. The time required in the TIME_WAIT state is dependent on the implementation method. Typical values are 30 seconds, 1 minutes, and 2 minutes. The connection is formally closed after waiting, and all resources (including the port number) are released."Question 1" Why is the handshake three times when it is connected and four times when it is closed?A: The syn+ack message can be sent directly after the server receives the SYN connection request message from the client side. Where the A

TenClinet =Socket.socket () OneIp_port = ('127.0.0.1', 9999) A Clinet.connect (Ip_port) - whileTrue: -cmd = input ('>>:'). Strip () the #client input command, LS, ifconfig - ifLen (cmd) = = 0:Continue #cannot send empty data -Clinet.send (Cmd.encode ('Utf-8')) - + #Client Send Instructions -Cmd_saiz = CLINET.RECV (1024) + #the size of data sent by the receiving service A Print(Cmd_saiz) at #Clinet.send (b ' 123 ') -Received_saiz =0 - - whileReceived_saiz! = Int

Reference Link: http://www.cnblogs.com/alex3714/articles/5830365.htmlDynamic Import Module1*dynamically importing module code2 3 4 #From lib import "AA"5 #Import Lib6Lib =__import__('Lib.aa')7 Print(Lib)8obj =lib.aa.c ()9 Print(Obj.name)Ten One #official recommended method of use A Importimportlib -AA = Importlib.import_module ("Lib.aa") - Print(AA. C (). Name) the - -*aa.py - + classC: - def __init__(self): +Self.name ='Alex'View CodePython Learning Path:

Java (Socket programming basics), socket programming BasicsI,Two main problems in Network Programming One is how to accurately locate one or more hosts on the network, and the other is how to transmit data reliably and efficiently after finding the hosts. In TCP/IP, the IP l

Php socket programming and php socket programming Are you familiar with TCP/IP, UDP, and Socket programming? With the development of network technology, these words are filled with our ears. So I want to ask: 1. What are TCP/IP an

Python socket, python socket1. Client/Server Architecture What is the client/server architecture? For different people, it means different things. It depends on who you ask and describe software or hardware systems. In either of these two cases, the premise is simple: the server is a series of hardware or software that provides the required "service" for one or m

Socket programming practices in Linux (2) introduction to basic socket programming APIs What is Socket? Socket originated from Unix, and one of the basic philosophies of Unix/Linux is "Everything is a file". You can use the "open-

BYTE order: Host byte order: Different hosts have different byte order, x86: Small end, network byte order (network byte order): big-endian byte sequence; 0. What is a socketSockets are communications between network processes (network interprocess communication, also known as network IPC) interfaces that enable the process to communicate with other processes, whether on the same computer or not, as an abstraction of the communication endpoint, like a file descriptor Descriptor) is an abstract r

Php socket programming and socket programming 1. Prerequisites I have never seen how many people use the socket module of php to do some things. Maybe everyone has positioned it within the scope of the script language, but in fact, the php

C ++ Socket programming steps and socket programming steps There are three types of socket programming: stream socket (SOCK_STREAM), datagram socke