如何在socket.io 2.0.3中获取会话ID？

Question

我想这样做，以便socket.io一次只允许来自同一会话的1个连接。我将如何访问会话ID？

var express      = require("express"),
app              = express(),
http             = require("http").Server(app),
io               = require("socket.io")(http),

io.on("connection", function (socket) {
});

Answer 1

会话的唯一标识符是this documnet的socket.id

var express      = require("express"),
app              = express(),
http             = require("http").Server(app),
io               = require("socket.io")(http),

io.on("connection", function (socket) {
    console.log(socket.id);
});