代码之家 › 专栏 › 技术社区 › TomáÅ¡ Zato

无法连接到套接字io服务器

socket.io websocket node.js javascript

TomáÅ¡ Zato · 技术社区 · 7 年前

我有一个正在运行的bot socket IO客户端和服务器。我想让客户端与服务器通信。

服务器初始化

this.http_server = net.createServer();
// this didn't work too. Exxentially socket io does not work at all
//   this.io = io.listen(typeof port == "number" ? port : process.env.PORT);
console.log("[ManagementServer] Attaching socket IO to HTTP server.");
this.io = io(this.http_server);
/// The port does open
this.http_server.listen(typeof port == "number" ? port : process.env.PORT,
    () => {
        console.log('[ManagementServer] IO HTTP server listening on port', this.http_server.address().port)
    });
/// The connection listener is triggered, but IO doesn't bother 
/// replying or something
this.http_server.on("connection", (req, res) => {
    console.log("[ManagementServer] Connection received, but IO ignores it.")
});
// Never happens
this.io.on("connection", (socket) => {
    this.connection(socket);
})

客户端初始化

const srvurl = "http://" + this.remoteAddr + ":" + this.remotePort;

console.log("[UDP_socketio] Connecting to server: ", srvurl)
this.client = socketioclient(srvurl);

this.client.once("connect", () => {
    console.log("[UDP_socketio] Connected to remote server, identificating.")
    this.sendIdentification();
});

this.client.on("error", () => {
    console.error("[UDP_socketio] Socket IO connection error.")
});

套接字IO调试输出

我启用了调试,但套接字IO调试输出无论如何都不是很有用:

[ManagementServer] Attaching socket IO to HTTP server.
  socket.io:server initializing namespace / +0ms
  socket.io-parser encoding packet {"type":0,"nsp":"/"} +0ms
  socket.io-parser encoded {"type":0,"nsp":"/"} as 0 +1ms
  socket.io:server creating engine.io instance with opts {"serveClient":false,"path":"/","initialPacket":["0"]} +3ms
[ManagementServer] IO HTTP server listening on port 80
[UDP_socketio] Connecting to server:  http://127.0.0.1:80
  socket.io-client:url parse http://127.0.0.1:80 +0ms
  socket.io-client new io instance for http://127.0.0.1:80 +0ms
  socket.io-client:manager readyState closed +0ms
  socket.io-client:manager opening http://127.0.0.1:80 +1ms
  engine.io-client:socket creating transport "polling" +0ms
  engine.io-client:polling polling +0ms
  engine.io-client:polling-xhr xhr poll +0ms
  engine.io-client:polling-xhr xhr open GET: http://127.0.0.1/?EIO=3&transport=polling&t=MEuBb8c&b64=1 +1ms
  engine.io-client:polling-xhr xhr data null +0ms
  engine.io-client:socket setting transport polling +10ms
  socket.io-client:manager connect attempt will timeout after 20000 +12ms
  socket.io-client:manager readyState opening +1ms
[ManagementServer] Connection received, but IO ignores it.
  socket.io-client:manager connect attempt timed out after 20000 +20s
  engine.io-client:socket socket close with reason: "forced close" +20s
  engine.io-client:polling transport not open - deferring close +20s
  engine.io-client:socket socket closing - telling transport to close +0ms
  socket.io-client:manager connect_error +2ms
  socket.io-client:manager cleanup +0ms
  socket.io-client:manager will wait 1178ms before reconnect attempt +1ms
  socket.io-client:manager attempting reconnect +1s
  socket.io-client:manager readyState closed +0ms
  socket.io-client:manager opening http://127.0.0.1:80 +1ms

请注意,我添加的连接侦听器会触发,但套接字IO不会执行任何操作。

到目前为止没有帮助的是:

移除 connection 来自世界各地的听众 this.http_server
更改用于测试的端口
增加客户端尝试连接后的延迟
阅读插座。io文档。它令人困惑、不完整、不准确且不一致。

什么能让socket IO忽略所有这样的连接?也许服务器正在监听来自不同路径的请求?如果是这样,如何检查IO监听的路径?

2 回复 | 直到 7 年前

RaphaMex 7 年前

插座木卫一 合作 http/s 像express(第7层)这样的服务器。

网是一个 传输控制协议 服务器(第4层)。

所以它们不兼容。

Fallen_Angel 3 年前

确保你正在插入插座。伊奥。将js文件导入客户端代码并使用它。如果您试图在客户端创建自己的WebSocket,可能会遇到问题。

对服务器执行以下操作:

var app = require('express').createServer()
  , io = require('socket.io').listen(app);

app.listen(80);

app.get('/', function (req, res) {
  res.sendfile(__dirname + '/index.html');
});

io.sockets.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' });
  socket.on('my other event', function (data) {
    console.log(data);
  });
});

对于您正在提供的HTML文件,类似于以下内容:

<script src="/socket.io/socket.io.js"></script>
<script>
  var socket = io.connect('http://localhost');
  socket.on('news', function (data) {
    console.log(data);
    socket.emit('my other event', { my: 'data' });
  });
</script>

确保你正在上菜。io/插座。伊奥。js从您的Web服务器目录。当你使用Firebug登录网页时,你可以使用Firebug来查看网页。