2016-06-14 83 views
1

我是Node.js的新手,我正在使用Socket.IO开发一个简单的聊天应用程序。 我做了一个index.js文件和一个index.html文件。Nodejs中获取最大调用堆栈大小超出错误

index.js文件看起来像这样

var app = require('express')(); 
var http = require('http').Server(app); 
var io = require('socket.io')(http); 
process.stdin.resume(); 
process.stdin.setEncoding('utf8'); 
var util = require('util'); 

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

io.on('connection', function(socket){ 
    socket.on('chat message', function(msg){ 
    console.log('message: ' + msg); 
    }); 
    var txt = process.stdin.on('data', function (text) { 
    process.tick() 
    return util.inspect(text) 
    }); 
    socket.emit('chat message',txt); 
}); 

http.listen(3000, function(){ 
    console.log('listening on *:3000'); 
}); 

我的index.html文件看起来像这样

<!doctype html> 
<html> 
    <head> 
    <title>Socket.IO chat</title> 
    <style> 
     * { margin: 0; padding: 0; box-sizing: border-box; } 
     body { font: 13px Helvetica, Arial; } 
     form { background: #000; padding: 3px; position: fixed; bottom: 0; width: 100%; } 
     form input { border: 0; padding: 10px; width: 90%; margin-right: .5%; } 
     form button { width: 9%; background: rgb(130, 224, 255); border: none; padding: 10px; } 
     #messages { list-style-type: none; margin: 0; padding: 0; } 
     #messages li { padding: 5px 10px; } 
     #messages li:nth-child(odd) { background: #eee; } 
    </style> 
    </head> 
    <body> 
    <ul id="messages"></ul> 
    <form action=""> 
     <input id="m" autocomplete="off" /><button>Send</button> 
    </form> 
    <script src="https://cdn.socket.io/socket.io-1.2.0.js"></script> 
    <script src="http://code.jquery.com/jquery-1.11.1.js"></script> 
    <script> 
     var socket = io(); 
     $('form').submit(function(){ 
     socket.emit('chat message', $('#m').val()); 
     $('#m').val(''); 
     return false; 
     }); 
     socket.on('chat message', function(msg){ 
     $('#messages').append($('<li>').text(msg)); 
     }); 
    </script> 
    </body> 
</html> 

我试图从控制台取值,打印在浏览器,反之亦然。在这个应用程序中聊天是在客户端和服务器之间进行的。

当我运行index.js文件我得到这个在终端上

listening on *:3000 

一切都很好,直到我打了服务器本地主机:3000从我的浏览器,然后我得到这个上终端

buffer.js:0 
(function (exports, require, module, __filename, __dirname) { // Copyright Joy 
^ 
RangeError: Maximum call stack size exceeded 

我该如何解决这个问题?我想从控制台(服务器)获取值并将其发送到浏览器(客户端)。

更新1

我得到这个错误

process.tick() 
      ^
TypeError: Object #<process> has no method 'tick' 
    at ReadStream.<anonymous> (/home/sunil/Downloads/TPL/chat/index.js:16:14) 
    at ReadStream.EventEmitter.emit (events.js:95:17) 
    at ReadStream.<anonymous> (_stream_readable.js:746:14) 
    at ReadStream.EventEmitter.emit (events.js:92:17) 
    at emitReadable_ (_stream_readable.js:408:10) 
    at emitReadable (_stream_readable.js:404:5) 
    at readableAddChunk (_stream_readable.js:165:9) 
    at ReadStream.Readable.push (_stream_readable.js:127:10) 
    at TTY.onread (net.js:526:21) 

更新2 process.tick()通过process.nextTick(替换) 然后我得到此错误

node.js:415 
      callback(); 
      ^
TypeError: undefined is not a function 
    at process._tickCallback (node.js:415:13) 

回答

2

RangeError: Maximum call stack size exceeded. The error is generated by infinite loop somewhere in your app. Updated code inside io.on('connection' ...

var txt = ''; 
process.stdin.on('data', function (text) { 
    process.nextTick(); 
    txt = util.inspect(text); 
}); 
io.on('connection', function(socket){ 
     socket.on('chat message', function(msg){ 
     console.log('message: ' + msg); 

     socket.emit('chat message',txt); 
     }); 
    }); 

Putting socket.emit inside io.on('connection', function(socket){}); directly will be continuously emitting that socket event' like a infinite loop and raises stack size range error. So, Please update your code as above.

+0

我更新的代码与您的代码,我除了消息得到了来自客户端的邮件服务器,但与此 - **上'socket'缺少错误处理程序。未定义** - 我明白我需要做错误处理。另一件事,我仍然无法发送消息从服务器到客户端。当我在服务器上输入消息并按回车时,我得到这个错误..查看错误的更新问题。 –

+0

好的另一个更新。函数** process.tick()**是错误的,正确的函数是** process.nextTick()**。我纠正了功能,然后我得到了这个错误信息。 ** node.js:415 callback(); ^ TypeError:undefined不是函数 at process._tickCallback(node.js:415:13)** –

+0

好吧,让进程保持在io事件之外。 –

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