UNIX环境高级编程——TCP/IP网络编程

#include <stdio.h>  
#include <unistd.h>  
#include <stdlib.h>  
#include <sys/types.h>  
#include <sys/socket.h>  
#include <errno.h>  
#include <strings.h>  
#include <string.h>  
#include <sys/un.h>  
      
typedef struct sockaddr SA;  
#define N 64  
      
int main(int argc, char *argv[])  
{  
    int sockfd;  
    struct sockaddr_un myaddr, peeraddr;  
    socklen_t len;  
    char buf[N] = {0};  
      
    if ((sockfd = socket(PF_UNIX, SOCK_DGRAM, 0)) == -1)  
    {  
        perror("socket");  
        exit(-1);  
    }  
          
    bzero(&myaddr, sizeof(myaddr));  
    myaddr.sun_family = PF_UNIX;  
    strcpy(myaddr.sun_path, "serversocket");  
      
    unlink("serversocket");  
    if (bind (sockfd, (SA *)&myaddr, sizeof(myaddr)) == -1)  
    {  
        perror("bind");  
        exit(-1);  
    }  
      
    len = sizeof(peeraddr);  
    bzero(&peeraddr, sizeof(peeraddr));  
      
    while (1)  
    {  
        bzero(buf, sizeof(buf));  
        if (-1 == recvfrom(sockfd, buf, N, 0, (SA *)&peeraddr, &len))  
        {  
            printf("errno=%d %sn", errno, strerror(errno));  
            exit(-1);  
        }  
      
        printf("from %s: %sn", peeraddr.sun_path, buf);   
        sendto(sockfd, buf, N, 0, (SA *)&peeraddr, sizeof(peeraddr));  
    }  
      
    exit(0);  
}

作者：csdn博客 ctthuangcheng

（编辑：应用网_镇江站长网）

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