[英]C or C++ with libevent/libev: monitor a unix socket
我正在嘗試監視Unix套接字(“ / tmp / mysocket”)。
我可以在Node.js中做到這一點:當1)綁定套接字,2)有人連接到套接字,3)數據發送到套接字以及4)套接字斷開連接時,它將引發一個事件。
我現在嘗試在C / C ++中執行此操作:我想監視“ / tmp / mysocket”以上事件。 我看過libevent(我最好使用它),但是看到它需要一個IP:port。 有什么辦法可以監視Unix套接字?
還是有人可以建議其他C / C ++解決方案?
您可以像常規文件一樣監視UNIX域套接字,因為它可以像文件一樣操作,例如在libev,
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應該相似。
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