python socket tutorial

For the creation of the TCP server side, it is divided into the following steps: 1, creating a Socket object (socket): two parameters are Address Family (e.g. af_inet for IPv4),Af_inet6 is Ipv6,af_unix for UNIX domain protocol cluster). socket type (for example, Sock_stream is Tcp,sock_dgram UDP)2, Bind server address (BIND): parameter for server address two tu

In a network application, this is often the case when one party tries to connect, but the other is unable to respond due to network media failure or other reasons.The Python socket library provides a way to get through the socket. The error gracefully handles socket errors unexpectedly.1. Code and related explanations1

visitPracticeClientImportsocketclient= Socket.socket ()#declares the socket type and generates the socket connection object at the same timeClient.connect (('localhost', 6565)) Client.send (b'Holle world!')#transfer data can only be in byte typedata = CLIENT.RECV (1024)#One acceptable amount is 1024x768.Print('recv:', data) client.close ()Service sideImport= socket.socket () server.bind('localhost', 6565)S

= 80TenREMOTE_IP =Socket.gethostbyname (host) One #get the IP address of the host, gethostbyname is the IP address of the Web page you do not know, you can obtain a URL, generally on their own computer is not used A Printremote_ip - S.connect ((remote_ip,port)) -Message ='get/http/1.1\r\n\r\n' the #This is a command for HTTP request Web page content - s.sendall (message) - Print 'Message Send successfully' -Reply = S.recv (4096) + Printreply -S.close ()Server and client are a

Operating system: LinuxSoftware Environment: Python 2.7.3 Usage: Copy Code code as follows: $./monsocket.py # This is check the URI or Socket of the script # Usage: ./monsocket.py-d URL; This is Http protocol ./monsocket.py-s socket IP or domain; This is Socket protocol ./monsocket.py-p Port;

Python socket-based simple instant messaging function example, pythonsocket This example describes how Python implements simple Instant Messaging Based on socket. We will share this with you for your reference. The details are as follows: Client tcpclient. py #-*-Coding: UTF-8-*-import socketimport threading # target I

Python Socket implements simple TCP Server/client function example, pythonclient This example describes how to implement simple TCP Server/client functions using Python Socket. We will share this with you for your reference. The details are as follows: There are countless articles on sockets on the Internet. Record you

Python socket programming (1), pythonsocket Socket is often called a Socket and has become a network programming standard that Windows, mac, and other operating systems comply. It can be used to implement communication between different computers through the network or between different processes on the same host. To u

Socket.Code:server.pyif __name__=='__main__': ImportSocket sock=Socket.socket (socket.af_inet, Socket. Sock_stream) Sock.bind (('localhost', 8001)) Sock.listen (5) whiletrue:connection,address=sock.accept ()Try: Connection.settimeout (5) BUF= Connection.recv (1024) ifBUF = ='1': Connection.send ('Welcome to server!') Else: Connection.send ('please Go out!') exceptsocket.timeout:Print ' time out'connection

connection, and ends the interaction at once.Vi. TCP-based sockets1 #Service Side2 3 ImportSocket4 5Phone = Socket.scoket (socket.af_inet,soket. SOCK_STREAM)#instantiate a Socket object6Phone.bind (('192.168.20.49', 8080))#binding IP Address and port number7Phone.lisen (5)#start TCP Listening with a maximum number of connections set to 5,8 9Con,c_address = Phone.accept ()#wait until the link arrives, once has the link, then returns a meta-ancestor, G

What is a Socket? A socket is an intermediate software abstraction layer that the application layer communicates with the TCP/IP protocol family, which is a set of interfaces. In design mode, thesocket is actually a façade mode, it is the complex TCP/IP protocol family hidden behind the socket interface, for the user, a set of simple interface is all, let the

Python Socket File Transfer example, The sender can continuously send new files, and the receiver can continuously receive new files. For example, if the sender input is e: \ visio.rar, the receiver will save it as e: \ new_visio.rar by default. multiple concurrent connections are supported. The specific implementation is as follows; Acceptor: Method 1: #-*-Coding: UTF-8-*-import

Today I read the second chapter of Python's core programming, which tells about the communication of the Python socket module, with the following notes:Sockets: 1, Af_unix af_inet socket Address: Host-port to connection-oriented sockets: A connection must be established before communication, such as using a telephone to call a friend, the primary protocol for im

python socket.error: [Errno 10054] The remote host forced the shutdown of an existing connection. Problem Solutions:Use Python to read Web pages a few days ago. Because of a large number of use of a site urlopen operation, so it will be identified as an attack by the site. Downloads are not allowed at times. After causing Urlopen (), Request.read () has been stuck there. Errno 10054 will be thrown at the en

From a strange piece of code in the Socket module learningPreface: In learning the socket module in the Python standard library, a strange piece of code was found.Import Socket def get_constants (prefix):d icts=dict ((GetAttr (Socket,n), N) forin dir (

This article mainly introduces the Python network programming using Select to implement the socket full-duplex asynchronous communication function, here to share to everyone, the need for friends can refer to the next The examples in this paper describe Python network programming using Select to implement the socket f

Server-side#-*-Coding:utf-8-*-# python:2.x__author__ = ' Administrator 'From socket Import *From time Import *Host= "port=1122# Listening Portbufsiz=1024Addr= (Host,port)Sock=socket (Af_inet,sock_stream)Sock.bind (ADDR)Sock.listen (5)# ConditionsStop_chat=falseWhile not stop_chat:Print U ' waiting for access, listening port :%d ' (port)Tcpclientsock,addr=sock.acc

') and a protocol (such as 'tcp 'or 'udp '), return the port number used by the service: >>> Socket. getservbyname ('http ', 'tcp ') 80 >>> Socket. getservbyname ('telnet ', 'tcp) 23 Generally, non-Python programs store and use IP addresses in a 32-bit byte package. The inet_aton (ip_addr) and inet_ntoa (packed) functions are Converted to IP addresses in this f

"Everything is file", and the file is operated with "open" "Read and Write" "Off" mode. Socket is an implementation of this pattern, the socket is a special kind of file, some of the socket function is the operation of it (read/write Io, open, close)The difference between a socket and file: The file module is

This is a small Socket Application I wrote before, and I also used a little bit of multithreading.This Socket Client is a small application I wrote to facilitate the company's recharge system debugging. It communicates with the recharge system to automatically complete the recharge test. ViewCodeRight: Import Socket, thread Def Communicate (s): phoneno = Raw_