linux socket programming by example pdf

Read end Shut_wr Close the Write end Shut_rdwr Both read and write off Close terminates two directions of data transfer, shutdown can selectively terminate data transfer in a certain direction or terminate data transfer in two directionsSHUTDOWM How=1 can guarantee that the peer receives an EOF character, regardless of whether other processes have opened the socket.Close does not guarantee that it will be sent until the

); }#endif}intMain (intargcChar*argv[]) { intFD; intret; Charbuf[ +]; intindex =0; Init (); while(1) {#ifdef TCPstructsockaddr_in fromaddr; socklen_t Len=sizeof(FROMADDR); FD= Accept (SOCKFD, (SA *) fromaddr, Len); if(FD 0) {printf ("Accept failed!\n"); Continue; } printf ("fd:%d\n", FD);#endifmemset (buf,1,sizeof(BUF)); while(1) {#ifdef TCPif(ret = recv (FD, BUF,sizeof(BUF), Msg_waitall) >0) {#endif#ifdef UDP printf ("udp!\n"); if(ret = Recvfrom (SOCKFD, buf,sizeof(BUF), msg_waitall, NU

host to which you want to connect. The port number of the daytime service is determined by the network database function Getservbyname, This function returns information related to the Network service in a way similar to returning host information. The program getdate attempts to connect to the first address in the address list returned by the specified host and, if successful, reads the information returned by the daytime service-a service that represents the Unix date and time.The 15.3.2

Linux programming socket-Linux general technology-Linux technology and application information. The following is a detailed description. // Client # Include # Include # Include # Include # Include # Include # Define oops (ch) {perror

A problem with linux SOCKET programming ~!! -- Linux general technology-Linux programming and kernel information. The following is a detailed description. Listen_fd = socket (PF_INET, S

C network programming (socket) in linux-Linux general technology-Linux programming and kernel information. The following is a detailed description. Author: Old urchin _ loveyou I tested the NETTERM client and found no problems.

executing this program, you can specify the host to which you want to connect. The port number of the daytime service is determined by the network database function Getservbyname. This function returns information related to the Network service in a way similar to returning host information. Program GETDATE attempts to connect to the first address in the address list returned by the specified host, assuming it succeeds, it reads the information returned by the daytime service-a service that rep

Through the Linux network programming-the original socket programming, we know that we can get the link layer packets through the raw sockets and recvfrom (), what is the link layer Packet we receive ?Link Layer envelope formatMAC head (wired LAN)Note: CRC, PAD can be ignored when group packageOne of the scenarios of a

#include 7#include string.h>8#include 9 Ten intMain () { One intclientfd; A structsockaddr_in clientaddr; - Charbuff[1024x768]; - inti; theCLIENTFD = socket (af_inet, Sock_stream,0); - if(Clientfd = =-1) { -printf"Socket error\n"); -Exit0); + } -clientaddr.sin_family =af_inet; +CLIENTADDR.SIN_ADDR.S_ADDR = inet_addr ("127.0.0.1"); AClientaddr.sin_port = htons (9999); at if(Connec

In linux, php is used for socket programming and a connection rejection error is reported. Please check that this post was last edited by lovegis0101 at 08:40:57. I am new to Linux, php, and socket (haha ....), I found some information on the Internet and wrote two basic php

common problem is trying to bind a port that is already in use. The trap is that there may not be an active socket, but it is still forbidden to bind the port ( bind returned EADDRINUSE ), which is caused by the TCP socket state TIME_WAIT . The status is retained for approximately 2-4 minutes after the socket is closed. TIME_WAITafter the status exits, the

1: There are two main protocol families used in socket programming.: 1>: network protocol family (such as af_inet and pf_inet) 2>: protocol families in the Local UNIX domain format (such as af_local and af_unix) Note: The selection of the protocol family is reflected in the first parameter of the int socket (INT domain, inst type, int protocol) function. 2: diffe

The previous article introduced the TCP/IP protocol, the socket communication process and the various functions involved: socket simple Understanding this article will specifically explain the TCP client server programming model related code article is divided into 4 parts: 1. TCP Client Server programming model Flowch

In this example, the C language serves as the server, and the Java end serves as the client. The Code is as follows: /******************Server program*****************/# Include # Include # Include # Include # Include # Include # Include # Include Int sockfd, newfd;Void * read_socket (); Int main (){Int ret;Pthread_t read_tid, write_tid;Struct sockaddr_in server_addr;Server_addr.sin_family = af_inet;/* set the domain to IPv4 */Server_addr.sin_addr.s_

=" 2016-05-24 22-14-50 screen. png "alt=" Wkiol1deyuza-1ozaab70infqrk075.png "/> Three. Summary:UDP socket programming is not necessary to establish a link, so the server does not have listen and accept, the client does not have Connect,recvfrom and sendto in each other's socket information.Because it is link-oriented, UDP is more efficient than TCP

Socket programming practices in Linux (I) basic network knowledge and TCP/IP Overview ISO/OSI Layer-7 Reference Model 1. Physical Layer: It mainly defines physical device standards, such as the interface type of the network cable, the interface type of the optical fiber, and the transmission rate of various transmission media. Its main function is to transmit th

1, the problem is mainly due to the closure of the socket to send data generation, that is, call the Send function to send data2, when sending data to the closed socket, when the send buffer is not full, the value returned by the Send function is still greater than 0, and when the send buffer is full, returns-13. When the Send function is called two times to the closed