server端代码：
bind_sun.sun_family = AF_UNIX;
strcpy(bind_sun.sun_path, "/tmp/arpmon");
unix_sock = socket(PF_UNIX, SOCK_STREAM, 0);
if (unix_sock < 0) {
fprintf(stderr,"Can't create UNIX socket
");
return;
}
if (setsockopt(unix_sock, SOL_SOCKET, SO_REUSEADDR,
(char *) &one, sizeof(one)) < 0){
fprintf(stderr, "setsockopt error
");
return;
}
if (bind(unix_sock, (struct sockaddr *)&bind_sun,
sizeof(bind_sun)) < 0) {
fprintf(stderr,"Can't bind
");
return;
}
if (listen(unix_sock, 5) < 0) {
fprintf(stderr,"can't listen
");
return;
}
// start get virtual and accept client
int client, buflen;
struct sockaddr_un client_sun;
while (1) {
// accept a client
client = accept(unix_sock,
(struct sockaddr *)&client_sun,
(socklen_t*)sizeof(client_sun));
if ((buflen = strlen(buf)) > 0) {
send(client, buf, buflen, 0);
printf("write: %d
", buflen); ／／ 这边write成功，没问题
}
close(client);
}
client端代码：
bind_sun.sun_family = AF_UNIX;
strcpy(bind_sun.sun_path, "/tmp/arpmon");
unix_sock = socket(PF_UNIX, SOCK_STREAM, 0);
if (unix_sock <= 0) {
fprintf(stderr,"Can't create UNIX socket
");
return 0;
}
if (0 != connect(unix_sock, (struct sockaddr *)&bind_sun,
(socklen_t)sizeof(bind_sun))) {
fprintf(stderr,"Can't connect UNIX socket:%s
",
strerror(errno));
return 0;
}
memset((void *)buffer, 0, sizeof(buffer));
len = recv(unix_sock, buffer, sizeof(buffer), 0); ／／ 始终返回0
printf("len: %d, %s
", len, buffer);
return 0;
client的recv始终返回0。两端权限都是root， 应该不是权限问题，
既然能连接的上,send也成功，为什么recv就失败呢？
大家帮忙看看。
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