套接字IO地址给出FFFF值

socket io address gives ffff value

本文关键字：FFFF IO 地址 套接字      更新时间：2023-09-26

如何获得地址值(192.168.0.number)，因为当我控制'地址'时，它会给我一个额外的值'::ffff:address'

var express = require('express');
var app = express();
var http = require('http').Server(app);
var io = require('socket.io')(http);
http.listen(3000, function() {
  console.log('listening on *:3000');
});
app.use(express.static(__dirname + '/public'));
var usernames = {};
var numUsers = 0;
io.sockets.on('connection', function (socket) {
  var addedUser = false;
  var address = socket.handshake.address;
  console.log("New connection from " + address);
}

这是ipv4映射的IPv6地址。我想提取IPv4部分的最简单方法是这样做:

// ...
var idx = address.lastIndexOf(':');
if (~idx && ~address.indexOf('.'))
  address = address.slice(idx + 1);
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