p12-24.c

来自「SUN Solaris8平台下进程间通信」· C语言 代码 · 共 43 行

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/un.h>
#include "err_exit.h"
#define SERVER  "/tmp/serversocket"
#define CLIENT  "/tmp/mysocket"
#define MAXMSG  512
int make_named_socket(const char *name);
int main (int argc, char **argv)
{
    int sock, i;
    char message[MAXMSG];
    struct sockaddr_un name;
    size_t size;
    int nbytes;
    if (argc < 2)  /* 命令行未给出要发送的消息 */
        exit(0);
    /* 创建套接字 */
    sock = make_named_socket(CLIENT);
    /* 初始服务套接字地址结构*/
    name.sun_family = AF_UNIX;
    strcpy(name.sun_path, SERVER);
    size = strlen(name.sun_path) + sizeof(name.sun_family);
    for (i = 1; i<argc; i++){
        /* 发送数据报 */
        nbytes = sendto(sock, argv[i], strlen(argv[i])+1, 0,
                        (struct sockaddr *)&name, size);
        if (nbytes < 0)
            err_exit("sendto(client)");
        /* 等待回答 */
        nbytes = recvfrom(sock, message, MAXMSG, 0, NULL, NULL);
        if (nbytes < 0)
            err_exit("recfrom (client)");
        /* 打印出收到的回答 */
        printf("Client: got message: %s\n", message);
    }
    /* 清理 */
    remove (CLIENT);
    close (sock);
}