linux socket programming by example pdf

First, explain the network communication using the socket interface in principle. Here we use the most common C/S mode as an example. First, the server has a process (or multiple processes) wait for the customer to connect to the specified port, and the service program waits for the customer's connection information. Once connected, the data can be transmitted according to the designed data exchange method

This example uses the client/server model for the connection protocol, as shown in Figure 2.3: Figure 2.3 Connection-oriented application flowchart Server-side program: #include #include #define TRUE 1 main () {int sock, length; struct SOCKADDR_IN server; struct SOCKADDR tcpaddr; int msgsock; Char buf[1024]; int Rval, Len; Sock = socket (af_inet, sock_stream, 0); if (Sock Client-side program:

Programming | example The following example program implements simple socket communication and can open multiple clients. The native test passed and no online tests were made. Server: Using System.Net; Using System.Net.Sockets; Using System.Threading; Using System.Collections; Namespace MySocketServer1 { public partial

Programming | Asynchronous asynchronous client sockets do not suspend the application while waiting for the network operation to complete. Instead, it handles network connections on one thread using the standard. NET Framework Asynchronous programming model, and the application continues to run on the original thread. Asynchronous sockets apply to applications that use a large network or do not wait for net

The original socket programming is almost the same as the previous UDP programming, which is simply to create a socket to receive data or send data through the socket. The difference is that the original socket can assemble its ow

Python network programming-TCP and UDP socket usage example, pythonudp This article describes the use of TCP and UDP socket in Python network programming. We will share this with you for your reference. The details are as follows: TCP protocol Server: #! /Usr/bin/env pythonf

Linux Network Programming: original socket programming and instance analysis (1) I. What can the original socket do? Generally, the programmer receives two types of sockets: (1) stream Socket (SOCK_STREAM): a connection-oriented

First of all, the principle of the use of Socket Interface network communication, here to the most commonly used C/s mode as an example, first of all, the server has a process (or multiple processes) at the specified port waiting for customers to connect, the service program waiting for the customer's connection information, once connected, Data can be transmitted according to the method and format of the d

* senddata = "A UDP packet from the server \ n";SendTo (Sersocket, SendData, strlen (SendData), 0, (SOCKADDR *) remoteaddr, Naddrlen);}Closesocket (Sersocket);WSACleanup ();return 0;}Client side:#include "stdafx.h"#include #include #pragma comment (lib, "Ws2_32.lib")int main (int argc, char* argv[]){WORD socketversion = Makeword (2,2);Wsadata Wsadata;if (WSAStartup (socketversion, wsadata)! = 0){return 0;}Socket sclient =

In addition to its mobile phone functions, the Android mobile phone app is also attractive because of its openness. This iPhone is incomparable, at least it is too commercialized. Like Windows 95, Android opened another window for communication, and socket communication was essential to achieve communication. Java already has a good example of socket communicatio

serverBufferedReader br =NewBufferedReader (NewInputStreamReader (Socket.getinputstream ())); String msg=NULL; while(msg = Br.readline ())! =NULL) System. out. println (msg); } Catch(IOException e) {e.printstacktrace (); } } }; }}Package Org.merit.test.socket;import java.io.ioexception;import java.net.serversocket;import java.net.Socket; Import Java.util.concurrent.executorservice;import java.util.concurrent.Executors; Public classMultithreadserver {Private intPort =8821;

sub-option: getsockopt ()/setsockopt () Information Wikipedia: Http://zh.wikipedia.org/wiki/Socket Linux Common C functions: http://net.pku.edu.cn/~yhf/linux_c/ Resources Linux Socket Programming: http://www.cnblogs.com/skynet/archive/2010

The basic steps for socket programming are as follows: Server Client ++ Create socket create socket ++ | | | ++ Address assignment ( Your own address) server address) ++ | | | ++ | Bind | Socket and address | ++ | | | | ++ | Listen | ++ | | ++ | | ++ ++ | Accept | ++ | | |

The example of this article describes the Python socket programming in more detail. Share to everyone for your reference. Specifically as follows: Copy code code as follows: Sock=socket.socket (Socket.af_inet,socket. SOCK_STREAM) The code above creates a socket object. Th

References: 1. windows socket programming 2. Unlocking the veil of socket programming The general process of socket TCP programming in Windows is as follows: Server Side 1. initialize the Windows

What is the SocketSocket interface is the TCP/IP network API, the Socket interface defines many functions or routines, programmers can use them What is SocketA Socket interface is an API of a TCP/IP network. a Socket interface defines many functions or routines that can be used by programmers to develop applications on a TCP/IP network. To learn TCP/IP network

{ BufferedReader in = new BufferedReader (new InputStreamReader ( Client.getinputstream ())); PrintWriter out = new PrintWriter (Client.getoutputstream ()); //Mutil User but can ' t parallel While (true) { String str = in.readline (); System.out.println (str); Out.println ("has receive ...."); Out.flush (); if (str.equals ("End")) Break ; } Client.close (); } catch (IOException ex) { } finally { } } public static void Main (string[] args) throws I

Network Debugging Tools Tcpdumpfunction : Print header information in the specified network interface that matches the Boolean expressionKey Words :① Type: Host (default), NET, port210.27. 48.2 // indicates that it is a host computer 202.0. 0.0 // indicates that a network at // indicate port number② confirm Transmission direction: SRC, DST, DST or SRC, DST and SRC210.27. 48.2 // the source address in the IP packet is this value 202.0. 0.0 // Destination network addres

Overview Today we explain a content in network programming--unix local socket.Found that a lot of people do not know or do not understand the concept of Unix local sockets, it is no wonder that the socket API is originally for the network communication between the host design, and this network socket also supports the single host of interprocess communication, o

Network Socket data transmission is a special type of I/O, and Socket is also a file descriptor. Socket also has a function called Socket () similar to opening a file. This function returns an integer Socket descriptor, and subsequent connection establishment and data transm