代码抄录自《UNUX网络编程 卷一》,在实现开发环境中调试通过,经测试发现可以正常监听。(2017-09-06 21:56:31) 开发环境:CentOS,g++,VIM 功能:C++实现Socket通信的Server端,实现监听8080端口接收到的消息。
#include 
#include           /* See NOTES */
#include 
#include 
#include 
#include 
#include 
#include 
const int MAXLINE = 4096;
const int LISTENQ = 1024;
int main(int argc, char **argv)
{
    int     listenfd, connfd;
    socklen_t len;
    struct  sockaddr_in servaddr, cliaddr;
    char    buff[MAXLINE];
    time_t  ticks;
    bzero(&servaddr, sizeof(servaddr));
    servaddr.sin_family = AF_INET;
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
    servaddr.sin_port = htons(8080);
    listenfd = socket(AF_INET, SOCK_STREAM, 0);
    bind(listenfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
    listen(listenfd, LISTENQ);
    for ( ; ; ) {
        len = sizeof(cliaddr);
        connfd = accept(listenfd, (struct sockaddr *) &cliaddr, &len);
        printf("connect from %s, port %d\n",
            inet_ntop(AF_INET, &cliaddr.sin_addr, buff, sizeof(buff)),
            ntohs(cliaddr.sin_port));
        read(connfd, buff, strlen(buff));
        printf("Recive msg: %s\n", buff);
        bzero(buff, sizeof(buff));
        ticks = time(NULL);
        snprintf(buff, sizeof(buff), "%.24s\r\n", ctime(&ticks));
        write(connfd, buff, strlen(buff));
        printf("Send msg: %s\n", buff);
        close(connfd);
    }
    return 0;
}