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Transferred from: http://blog.csdn.net/kikilizhm/article/details/7858405This gives an example of a simple socket network programming under Linux, communicates with the TCP protocol, listens on the server, sends the data to the client after receiving the client's connection, and the client prints and closes after receiving the data. There are detailed instructions
,sizeof(CLIENT_ADDR)); Num=recvfrom (St,buf,sizeof(BUF),0,(structSOCKADDR *) client_addr,Client_addrlen); if(num==-1) {printf ("Recvform failed! Error message:%s\n", Strerror (errno)); Break; } /*even if the sender is closed, the Recvfrom function will not return 0, but will continue to block the process*/ /*else if (num==0) {printf ("The other side sockets is closed!\n"); Break } */printf ("recv%d num=%d\n", index++, num); Fwrite (BUF,sizeof(Char), NUM,PFA); if(num1
One. Network Card driver Architecture analysis1. Linux Network Subsystem#系统调用接口层Provides a unified way for applications to access the network subsystem.#协议无关层Provides a common way to use the Transport layer protocol.#协议栈的实现Implementing a specific network protocol#设备无关层Common
The complete read/write function of Linux network programming-General Linux technology-Linux programming and kernel information. The following is a detailed description. In the embedded Linux
From today onwards, will be exposed to network programming, the platform is Linux, the implementation of the language C language, and finally will implement a simple miniftp server.The main content of the program is: Linux network progra
Article Title: Linux Network Programming-3. server and client information functions. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In
Article Title: Linux Network Device Driver Programming. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. This article only discusses the
One: unsafe (non-reentrant) inet_xxx () function familySince computer-understood IP is stored in binary form, the conversion of string IP and binary IP is often required in network programming, and the Linux system has a set of functions to be used for network address translation, as follows: #include #inc
and releasing a connection over TCP. Here we will give a general description of the migration process of the TCP state machine. The TCP state machine migration diagram described in TCP rfc793 is extracted as follows (referenced here ):The TCP state machine contains 11 statuses, And the statuses are migrated under various socket APIs drivers. Although this figure looks complicated, for those who have some experience in TCP network
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
The previous note mainly introduced the basic knowledge related to time_wait. This article describes how to solve the problem raised by the article title based on practice. 1. view the system network configuration and current TCP statusIt is necessary to understand the default network configuration of the system when locating and handling network problems in appl
A) Socket: file descriptor 1. purpose: implement network programming in LINUX 2. classification: a) reserved socket: use TCP protocol (SOCK_STREAM) security B) datagram socket: use UDP protocol (SOCK_DGRAM) fast c) original socket: use IP protocol :( SOCK_RAW) 3 .... a) Socket: file descriptor 1. Role: implement network
RMB is used to calculate the network programming communication program in linux-general Linux technology-Linux programming and kernel information. The following is a detailed description. I graduated from the undergraduate course
order to the network byte order conversion). If the computer itself has the same host byte order and network byte order, the contents of these functions are actually empty operations.To ensure that the 16-bit port number has the correct byte order, the server and client need these functions to convert the port address. The changes in the new server program server3.c are:SERVER_ADDRESS.SIN_ADDR.S_ADDR = Hto
Preface : Organize the Linux socket programming related APIs and knowledge pointsFlow Socket Processing FlowDatagram Socket processing Flowbyte order : Byte order has a small end of the big-endian, different processing architectures when storing a multibyte number, if the low memory address stores the high part of the number, it is called the big endian byte order, or vice versa is called the small end byte
connection requestAddrlen: Is the size of the struct that the addr points toExecute successfully returns a new socket on behalf of the client, error 1, error code in errno, detailed with error code manual reference man manualReturn value: The return value of the Accept () function is the client socket file descriptor for the new connection, and communication with the client is done through the new socket file descriptor that is returned by the accept (), rather than by the file descriptor when
2.1 Structure of the Network DriverAll Linux network drivers follow common interfaces. The object-oriented method is used in the design.A device is an object (device structure) with its own data and methods. For each deviceWhen the method is called, the first parameter is the device object itself. In this way, you can access yourself.(Similar to this reference du
Common Information about Linux network programming, including structure, formatting, and functions-general Linux technology-Linux programming and kernel information. For details, see the following. 1. struct Struct sockaddr { Uns
"Viewing IP conditions in window"ifconfig "Viewing IP conditions under Linux/unix"Linux Network Environment ConfigurationThe first method:1. Log in as root and use the Setup command to enter the text mode Setup Utiliy to configure the networkHere can be IP, subnet mask, default gateway, DNS settings.2. The configuration of the NIC is not in effect, run/etc/rc.d/
Tags: ports must be Linux network programming purpose cyclic Traffic control STP synchronization contains# # # Osi:open System Interconnection # # #开放系统互联网模型是由ISO国际标准化组织定义的网络分层模型, total seven levels1. Physical layer: Physical definition of all electronic and physical equipment specifications, data transmission unit is bit (b), this layer definition specification
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