#include <sys/socket.h>
#include <netinet/in.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
void err_sys(const char *errmsg);
int main(void)
{
int sockfd[2];
pid_t pid;
if ((socketpair(AF_LOCAL, SOCK_STREAM, 0, sockfd)) == -1)
err_sys("socketpair");
if ((pid = fork()) == -1)
err_sys("fork");
else if (pid == 0) { /* child process */
char buf[] = "hello china", s[BUFSIZ];
ssize_t n;
close(sockfd[1]);
write(sockfd[0], buf, sizeof(buf));
if ((n = read(sockfd[0], s, sizeof(s))) == -1)
err_sys("read");
write(STDOUT_FILENO, s, n);
exit(0);
} else if (pid > 0) { /* parent process */
char buf[BUFSIZ];
ssize_t n;
close(sockfd[0]);
n = read(sockfd[1], buf, sizeof(buf));
write(sockfd[1], buf, n);
exit(0);
}
}
void err_sys(const char *errmsg)
{
perror(errmsg);
exit(1);
}
博客 下载
论坛 开源项目
发表评论 
打印本文
推荐本文
加入收藏
返回顶部
关闭窗口
