Article Source: ASPCN Author: Sun Wen
Socket transfer Mode Sockets has two main modes of operation: connection-oriented and connectionless. Connection-oriented sockets operations are like a phone call, They have to establish a connection and a call to one person. All things arrive in the same order as they set out. A connectionless sockets operation is like a mail delivery, and there is no guarantee that multiple messages may arrive in the same orde
The address data structure of the socket has different forms depending on the system and the network environment. In order for the different format addresses to be passed into the socket function, the address structure must be forced to be converted to:
struct sockaddr{
sa_family_t sa_family;/* address family*/
char sa_data[];/* Variable-length address*/
...
};
The
Use socket to implement multiple connections and ssh functions, and socket to implement multiple sshI. Preface
In the previous article, we already know that the client connects to the server through socket for a data transmission. How can we implement multiple data occurrences on the client? But does the server accept multiple clients?2. Send Chinese Information
After all data operations are completed, you can call the close () function to release the socket and stop any data operations on the socket:Close (sockfd );
You can also call the shutdown () function to close the socket. This function allows you to stop data transmission in a certain direction, while data transmission in one direction continues. For example, you can close the write operation of a
Asynchronous client socket example
The following example creates a client to connect to the server. The client is generated using an asynchronous socket, so the execution of the client application is not suspended when the server returns a response. The application sends the string to the server and then displays the string returned by the server on the console.
C #
Using System;Using System. Net;Using Sys
Source: China IT lab
Today, let's talk about it. Net network applicationsProgramMany people think that synchronous socket should not be used in the network application server socket. yes, this is the case in most cases, but in some scenarios, we may get more results by using synchronous socket. For example, in the following two scenarios, we can consider using
Source: China It Laboratory
Today, let's talk about the. NET network application development of synchronous socket, many people think that in the network application of the service socket should not use synchronous socket. Yes, in most cases, but there are also scenarios where we might get more results with a sync socket
The simple explanation is:Short connection: Establish a connection, send a packet, close the connectionLong connection: Establish a connection, send a packet, send a heartbeat packet, send a packet, send a heartbeat packet, send a heartbeat packet ...So with frequent data transmission, a short connection creates a TCP connection frequently, and for long connections, the same TCP connection is always usedPackage Com.tree.demo.socket;import Java.io.ioexception;import Java.io.inputstream;import jav
The simple explanation is:
Short connection: Establish a connection, send a packet, close the connection
Long connection: Establish a connection, send a packet, send a heartbeat packet, send a packet, send a heartbeat packet, send a heartbeat packet ...
Therefore, frequent data sending and receiving, the short connection will frequently create a TCP connection, and for long connections, always use the same TCP connection
Package com.tree.demo.socket;
Import java.io.IOException;
Import Java.io
, because the entire project has a lot of content, it also includes the database and QT interface, so there will be functions or keywords like qdebug and emit, but this does not affect reading. Friends can use functions such as printf as needed to replace or remove them, only the socket connection section is provided here. Some of the following functions may be macro-defined, such as buf_size and maxclient.
Socket of Python Series 8 and socket of python SeriesDirectory
Socket
Simple chatbot
Simple ftp upload
Solution to the stick package ProblemI. socket module
Socket, commonly known as socket, is actually a combination of IP address
PHP + SOCKET because the SOCKET is not connected and the address is not provided, the request for sending or receiving data is not accepted. This post was last edited by subendong in December 2011-06-0316: 39: 41. as two posts were published consecutively, none of them returned, please seek help first: PHP + SOCKET because the
When the application layer communicates data through the transport layer, TCP and UDP encounter problems that simultaneously provide concurrent services for multiple application processes. Multiple TCP connections or multiple application processes may require data to be transmitted over the same TCP protocol port. To differentiate between different application processes and connections, many computer operating systems provide an interface called socket
Client PackageCom.swift.jinji;ImportJava.io.FileInputStream;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.OutputStream;ImportJava.net.Socket;/*Project requirements: Using the socket to write a Java program, requires: the implementation of the client to upload files to the server, that is, the client to read the local text file, the file sent to the server, the server will receive the content into a text file. */ Public classuploadc
Original://http://blog.csdn.net/linybo/article/details/51141960The sample program is a synchronous socket program, the function is very simple, just the client sends a message to the server, the server returns a message to the client, here is just a simple example, is a basic socket programming process, in the following article, The synchronization and asynchrony of sockets are recorded in turn, along with
Day8 -- socket network programming advanced, day8 -- socket
Socket: socketIt is to achieve data exchange between the server and the client. The server receives and sends data, and the client sends and receives data.Python3. This is because the client needs to convert to bytecode when sending a connection to the server, and also to bytecode when the server returns
. Net socket development-synchronous socket implementation: two examples today, let's talk about the. NET network application
Program Many people think that synchronous sockets should not be used in the network application server socket. Yes, this is the case in most cases, but in some scenarios, we may get more results by using synchronous
PHP Socket (Socket connection) Extension introduction and usage, phpsocket
The PHP socket extension is based on the popular BSD sockets and implements the underlying interface of the socket communication function. It can be used as a socket server like the client.
When using
Socket Communication entry, socket communication
An example of a basic python Program
The source code is as follows:
#! /Usr/bin/env python # specifies the program used by the code to run it. First, you will find the python installation path in the env settings, and then call the interpreter program in the corresponding path to complete the operation.# Basic connect example-connect. py
Import
PHP + SOCKET because the SOCKET is not connected and the address is not provided, the request for sending or receiving data is not accepted. This post was last edited by subendong from 2011-06-0316: 39: 41. because two posts were published consecutively, therefore, apply to the moderator to delete the previous two similar posts, otherwise it will be useless. Just like garbage. Then, I hope that you can make
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