/*
* 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
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
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 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.
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
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 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.
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
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
Python Socket programming tutorial, pythonsocket
This is a guide and tutorial for quickly learning Python Socket programming. The Socket programming in Python is similar to that in C.Python about Socket functions please see http://docs.python.org/library/socket.htmlBasically, Socke
What is socket
A socket interface is an API of a TCP/IP network. A socket interface defines many functions or routines. programmers can use it to develop applications on a TCP/IP network. To learn TCP/IP network programming on the internet, you must understand the socket interface.The
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
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
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.
First, socketIn general, the socket has an alias called a socket.Sockets originate from UNIX and can be manipulated using "open open–> read-write write/read–> close" mode. Socket is an implementation of this pattern, the socket is a special kind of file, some of the socket function is to do it (read/write IO, open, clo
Http://blog.chinaunix.net/uid-20733992-id-3450058.htmlThe original address: Linux socket programming yulianliu1218Socket programming under LinuxWhat is a socketThe socket interface is a TCP/IP network Api,socket interface that defines many functions or routines that programmers can use to develop applications on TCP/IP networks. To learn TCP/IP network programmin
What is a socketThe socket interface is a TCP/IP network Api,socket interface that defines many functions or routines that programmers can use to develop applications on a TCP/IP network. To learn about TCP/IP network programming on the Internet, you must understand the socket interface.The socket interface designer fi
Log4j2 test instance-socket centralized print example, log4j2-socket1. Background
Because the company recently set up a centralized log management platform and required that all system logs be sent to the unified platform, based on this, we studied the socket of log4j2.
2. Prepare materials
Two jar packages for log4j2: log4j-api-2.1.jar and log4j-core-2.1.jar. (The version must be consistent, especially the
How to Implement Socket heartbeat packets and socket heartbeat packets
A client has been created recently, but a disconnection detection function is required. Let's take a look at using the custom HeartBeat method to check the client connection.
How to Implement heartbeat packets:
After the client is connected to the server, the server maintains an online client list. The client sends a heartbeat packet to
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