您可以像普通文件一样监视 UNIX 域套接字,因为它可以像文件一样操作,例如在 libev 中,
struct sockaddr_un address;
memset(&address, 0, sizeof(address));
address.sun_family = AF_LOCAL;
strcpy(address.sun_path, "/tmp/mysocket");
bind(socket, (struct sockaddr*)(&address), sizeof(address));
listen(socket, 5);
// now listen if someone has connected to the socket.
// we use 'ev_io' since the 'socket' can be treated as a file descriptor.
struct ev_io* io = malloc(sizeof(ev_io));
ev_io_init(io, accept_cb, socket, EV_READ);
ev_io_start(loop, io);
...
void accept_cb(struct ev_loop* loop, struct ev_io* io, int r)
{
// someone has connected. we accept the child.
struct sockaddr_un client_address;
socklen_t client_address_len = sizeof(client_address);
int client_fd = accept(socket, (sockaddr*)(&client_address),
&client_address_len);
// 'read' / 'recv' from client_fd here.
// or use another 'ev_io' for async read.
}
libevent 应该是类似的。