node.js - 如何检查套接字是否已发出

Question

我访问像这样连接的客户端的套接字

io.on('connect', (socket) => {
  saveSocketSomwhere(socket)
});

稍后在我的代码中，如何检查是否socket已发出？它是否带有任何那种状态？

Answer 1

您可以像这样将套接字保存在数组中：

connections = [];
io.sockets.on('connection', function (socket) {
    connections.push(socket);
    console.log('Connected: %s sockets connected', connections.length);

    // and remove like this
    socket.on('disconnect', function (data) {
        connections.splice(connections.indexOf(socket));
        console.log('Disconnected: %s sockets connected', connections.length);
    });

});