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In Java, a communication based on a socket (socket). A two-person single direction communication example

/* * Date:2004-11-29 author:zhangyu6050; * TODO: a two-person single direction communication example * This file is the host side (Server) * Provide communication between host and client sockets: Fromclient * Bugs: */ Import java.net.*; Import java.io.*; public class Chatserver { public static void Main (string[] args) { Final int port = 1775; The port number of the host that established the communication ServerSocket socserver = null; Socket fro

PHP interprocess communication IPC and socket

inspiration for you, I would be honored. Willing to talk to you about this fascinating computer technology 、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、 ◇socket Foundation◇ Create a server◇ Create a client in this chapter you will learn about attractive and confusing sockets (Sockets). Sockets is a feature that is not fully exploited in PHP. Today you will see the creation of a server that can use a client-side connection and connect using a

Summary of Socket network programming, socket network programming

Summary of Socket network programming, socket network programming Currently, almost all C/C ++ background programs require network communication. There are two Implementation Methods: Using the underlying system socket or using the existing encapsulated network library. This article summarizes the two methods and introduces a lightweight network communication lib

Use SOCKET to send emails (PHP) for socket programming)

We know that PHP can send emails in two ways: one is the mail () function, and the other is the socket. For the first method, I will not introduce it much, because it is relatively simple to use, but there may be many things to be configured. For more information, see the PHP documentation. Here, I will mainly talk about the second method. When talking about the second method, I will first talk about the principles of sending emails. Email sending i

Tongda OA uses C # Socket programming to replace Socket operations in PHP

Tongda OA uses C # Socket programming to replace Socket operations in PHP. Tongda OA adopts the PHP language for programming. Similarly, some operations on IM use Socket for communication. Recently, a program needs to be implemented using C #, which involves this part. it is rewritten using C #. further test results are required. Using System; using System.

IOS Socket 02-socket Basics

1. IntroductionA socket is a mechanism for network servicesBoth ends of the communication are socketsNetwork communication is actually the communication between socketsData is transmitted via IO between two sockets2. Socket Communication flowchart3. Simulated QQ Chat MapFirst of all, Zhang San QQ first issued a word ' Have you eaten? ' to server servers. After the server receives the message, send it to Joh

Python Socket Socket Programming

#!/usr/bin/python #client from socket import * HOST = ' 127.0.0.1 ' PORT = 21567 Bufsiz = 1024x768 ADDR = (host,port) tcpclisOck = socket (af_inet, Sock_stream) tcpclisock.connect (ADDR) recv_s = Tcpclisock.recv (bufsiz) print recv_s try:while True:send_c = Raw_input (' clinet: ') tcpclisock.send (' Client:%s '% (send_c)) recv_s = Tcpclisock. Recv (bufsiz) print recv_s finally:tcpCliSock.close () Server: #!

[Excerpt-socket-Learning]socket listen for local IP (inaddr_any) and get local IP address

1, the server is not fixed IP listening, only monitoring the host any IP address: (the client specifies the local IP address, the server does not need to modify any IP address information) bzero (adr_inet, sizeof (adr_inet)); adr_inet.sin_family = af_inet; ADR_INET.SIN_ADDR.S_ADDR = htonl (Inaddr_any); Adr_inet.sin_port = htons (port); Note: The dual IP address of the host has not been processed, to be verified; 2, obtain the local IP address: (no TCP and UDP points)//Remove the local IP address

The socket module in Python

This article refers to the first chapter of Python network programmingImport socketHelp (socket)Functions:Socket ()--Create a new socket objectSocketpair ()--Create a pair of new socket objects [*]FROMFD ()--Create a socket object from an open file descriptor [*]GetHostName ()--Return the current hostnamegethostbyname

Socket principle Detailed

process number 5, and the number 5th process can exist in machine B, so the phrase "process 5th" is meaningless. Second, the operating system supports a large number of network protocols, different protocols work in different ways, address format is also different. Therefore, the inter-network process communication also solves the problem of multi-protocol recognition. In fact, the TCP/IP protocol family has helped us solve this problem, the network layer "IP address " can uniquely identify the

Socket Communication in Python twisted framework socket communication in Python twisted framework

Socket Communication in Python twisted framework Reprinted: http://blog.csdn.net/jackyyen/archive/2009/04/13/4069887.aspx Python Network toolkit twisted Matrix Twisted matrix is an increasingly popular pure Python framework for programming network services and applications. Although twisted matrix has a large number of loosely coupled modular components, the central concept of the framework is the idea of non-blocking asynchronous servers. In thi

Write a socket server program that listens to port 8888. After receiving the message "nihao" from the client, write "nihao" back to the client and close the socket.

Try { 2. What is the difference between socket and socketchannel? Waiting for answers

Linux Network programming socket (11) Socket I/O Timeout setting method and timeout with select implementation

Use the alarm function to set a timeout void handler (int sig) { } signal (SIGALRM, handler); Alarm (5); int ret = read (FD, buf, sizeof (BUF)); if (ret = = 1 errno = = eintr) errno = etimeout; else if (ret >= 0) alarm (0); ................. Program general framework as shown above, if read in the 5s by the SIGALRM signal interruption and return, it indicates a timeout, otherwise no timeout has been read to the data, cancel the alarm clock. However, this method is not commonly u

PHP Socket Implementation WebSocket (ii) SOCKET function

The PHP socket function is about the same as the C-style socket functionSocket function:http://php.net/manual/en/book.sockets.phpServer-side:Set_time_limit(0);$server _socket= Socket_create (Af_inet, Sock_stream, sol_tcp);Socket_bind ($server _socket, ' 127.0.0.1 ', ' 1212 ');Socket_listen ($server _socket, 4);Socket_set_nonblock ($server _socket); Do{$msg _socket= Socket_accept ($server _socket);if($msg _s

Socket solves the problem of sticking packets. 1. socket solves the problem of sticking packets.

Socket solves the problem of sticking packets. 1. socket solves the problem of sticking packets. A sticky Package refers to the phenomenon that the sender sends packets too quickly and sends multiple packets to the receiver end to form a package. For example, the sender sends one character 'a' for 10 consecutive times ', because the sending speed is very fast, the receiving end may receive 10 characters 'aa

Socket tips: Allow socket to send UDP Broadcast

If you create a UDP Socket: SocketHandle = socket (serverAddr-> ai_family, serverAddr-> ai_socktype, serverAddr-> ai_protocol ); If you use it to send Broadcast now, errors will occur. This is not allowed by the Socket API. So how can we make it support broadcast? You need to continue to make some settings: Int broadcastPermission = 1; setsockopt (socket

Linux socket programming with TCP example

process communication in the network can use this flag to interact with other processes.Applications that use the TCP/IP protocol typically use the application programming interface: The UNIX BSD socket (socket) and the Unix System v Tli (already obsolete) to enable communication between network processes. For now, almost all applications are sockets, and now it's the network era, where process communicati

Socket programming in LAN testing, socket programming LAN

Socket programming in LAN testing, socket programming LAN How can I test and use the Socket messaging and file software mentioned earlier? In fact, you only need to determine the local area network connection between the client and the server. 1. Enter ipconfig/all in cmd to obtain the IP address or local name. 2. Customer enters the ping IP address (or Serve

Boost: ASIO: IP: TCP: socket is connected? (How do I know that the socket has been connected ?)

local socket). The network stack uses this state to knowWhich process to give each incoming packet to and what State to put in the header of each outgoing packet. The so-called connection is only a virtual pipeline consisting of some States saved by each endpoint of the connection. Through these statuses, the network stack knows to pass the incoming data packet to that process, and to put the status to the packet header of the sent data packet. Beca

Send TCP protocol using socket RAW socket

Socket use Af_inet protocol family, and create sock_raw original socket, fill in the IP header and TCP header, it is familiar with the lower head structure. * ===================================================================================== * * FILENAME:RAW.C * * Description: Uses the original socket to send the TCP protocol and take out its own data.

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