PracticeDev/study_clang/ipc_test/unix_socket/tcp2udp/client.c

66 lines
1.9 KiB
C
Raw Normal View History

2022-12-20 17:31:11 +08:00
/*************************************************************************
> File Name: clinet.c
> Author: TianLun Song
> Mail: songtianlun@frytea.com
> Blog: https://blog.frytea.com
> Created Time: Wed 13 Jan 2021 09:26:49 AM CST
************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#define MAXLINE 80
char *client_path = "client.socket";
char *server_path = "server.socket";
int main() {
struct sockaddr_un cliun, serun;
int len;
char buf[100];
int sockfd, n;
if ((sockfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0){
perror("client socket error");
exit(1);
}
// 一般显式调用bind函数以便服务器区分不同客户端
memset(&cliun, 0, sizeof(cliun));
cliun.sun_family = AF_UNIX;
strcpy(cliun.sun_path, client_path);
len = offsetof(struct sockaddr_un, sun_path) + strlen(cliun.sun_path);
unlink(cliun.sun_path);
if (bind(sockfd, (struct sockaddr *)&cliun, len) < 0) {
perror("bind error");
exit(1);
}
memset(&serun, 0, sizeof(serun));
serun.sun_family = AF_UNIX;
strcpy(serun.sun_path, server_path);
len = offsetof(struct sockaddr_un, sun_path) + strlen(serun.sun_path);
if (connect(sockfd, (struct sockaddr *)&serun, len) < 0){
perror("connect error");
exit(1);
}
while(fgets(buf, MAXLINE, stdin) != NULL) {
write(sockfd, buf, strlen(buf));
n = read(sockfd, buf, MAXLINE);
if ( n < 0 ) {
printf("the other side has been closed.\n");
}else {
write(STDOUT_FILENO, buf, n);
}
}
close(sockfd);
return 0;
}