Linux TCP编程常见问题考虑

最新推荐文章于 2022-09-12 22:16:29 发布

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最新推荐文章于 2022-09-12 22:16:29 发布 · 291 阅读

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1 搭建一个TCP服务器

源码：tcp_server.c

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#define MAXBYTES 1024
#define SERVER_PORT 8888
int main(void)
{
  
  
    struct sockaddr_in servaddr, cliaddr;
    socklen_t cliaddr_len;
    int listenfd, clifd;
    char str[INET_ADDRSTRLEN];
    char buf[MAXBYTES];
    int i, n, len;
    listenfd = socket(AF_INET, SOCK_STREAM, 0);
    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    servaddr.sin_port = htons(SERVER_PORT);
    bind(listenfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
    listen(listenfd, 128);
    printf("Accepting connections ...\n");
    while (1) 
    {
  
  
        bzero(&buf, sizeof(buf));
        cliaddr_len = sizeof(cliaddr);
        clifd = accept(listenfd, (struct sockaddr *)&cliaddr, &cliaddr_len);
        if(clifd == -1)
        {
  
  
            perror("clifd");
            continue;
        }
        len = read(clifd, buf, sizeof(buf) - 1);
        if(len !=