Linux网络编程基础＜socket最简连接服务器＞-优快云博客

本文链接：https://blog.youkuaiyun.com/liqifff/article/details/126915215

本文提供了一个基于TCP/IP的服务端编程实例，通过C语言展示了如何创建套接字、绑定地址、监听连接请求及接收客户端连接的过程。适用于初学者理解和实践TCP/IP的基本原理。

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没啥好说的，理解tcp/ip最基本的协议以后就可以编写

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <stdio.h>
#include <error.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <strings.h>
#include <sys/wait.h>
#include <ctype.h>
#include <signal.h>

#define Myseverport 9999

int main(void)
{

    int socketfd, connectfd;
    int ret;
    struct sockaddr_in myserver;
    struct sockaddr_in myclient;
    socklen_t clientAddrLen;

    socketfd = socket(AF_INET, SOCK_STREAM, 0);
    if (socketfd < 0)
    {
        perror("socket is error");
        exit(1);
    }

    myserver.sin_family = AF_INET;
    myserver.sin_port = htons(Myseverport);
    myserver.sin_addr.s_addr = htonl(INADDR_ANY);
    ret = bind(socketfd, (const struct sockaddr *)&myserver, sizeof(myserver));
    if (ret < 0)
    {
        perror("bind is error");
        exit(1);
    }

    ret = listen(socketfd, 128);
    if (ret < 0)
    {
        perror("listen is error");
        exit(1);
    }

    printf("Accepting is client connect...\n");

    while (1)
    {
        clientAddrLen = sizeof(myclient);
        connectfd = accept(socketfd, (struct sockaddr *)&myclient, &clientAddrLen);
        printf("Client is connect\n");
        if(connectfd < 0){
            perror("accept is error");
            exit(1);
        
        //连接以后的应用实现代码
        
        }
    }
}