Question

我正在使用Node JS + socket.io应用程序。

整个应用程序运行正常，但是大约5分钟后服务器停止接收客户端触发的事件。 :(

当未触发事件时，我可以看到服务器已成功接收到心跳。

   debug - got heartbeat packet
   debug - cleared heartbeat timeout for client 4cKMC4Iqje-7dDfibJZm
   debug - set heartbeat interval for client 4cKMC4Iqje-7dDfibJZm
   debug - emitting heartbeat for client 4cKMC4Iqje-7dDfibJZm
   debug - websocket writing 2::
   debug - set heartbeat timeout for client 4cKMC4Iqje-7dDfibJZm

我也确定客户端正在发出消息，因为我可以看到在chrome Developer工具中发送的数据。以下是正在发送的样本数据

5:::{"name":"ev_SendChatMessage","args":[{"chatMsg":"dgdfsgfs","aID":"10010001835364"}]}

另外，我已经在服务器机器上检查了TCP Dump的结果，它已成功接收数据包。

节点版本为v0.10.21 socket.io版本为0.9.16

客户代码

var socket;

$(function() 
{   
    // Connect to the Live Proctoring Server.
    socket = io.connect('http://autoproc.am.in:8899');
});
function SendChatMsg()
{
    // This get called on click of a button
    socket.emit( "ev_SendChatMessage", { chatMsg : "textToSend", aID : "123" } );
}

服务器代码

    var options = {};
    var io = require( 'socket.io' ).listen( 8899, options );

    // Called when a connection is made with a new Client
    function OnConnection ( socket )
    {
        console.log( "Connection has been made with " + socket.id );

        socket.on('ev_SendChatMessage', SendChatMessageFromModerator );

        socket.on('disconnect', OnDisconnect );
    }

// This stops getting called after some time. In the beginning it is getting called successfully.
function SendChatMessageFromModerator( data )
{
     console.log( data );
}

编辑：更准确地说，只有在收到7-8条消息并发出7-8条消息后才会发生这种情况。

编辑：我试图将传输机制从Web Socket更改为“xhr-polling”。即便如此，我也面临同样的问题，而不是我可以在调试中看到一些值得的东西。

   debug - xhr-polling received data packet 5:::{"name":"ev_SendChatMessage","args":[{"chatMsg":"sfsdfdsfs","aID":"10010001167896"}]}
   debug - clearing poll timeout
   debug - xhr-polling writing 8::
   debug - set close timeout for client JfaWyiP3YqTRmqyzz4z6
   debug - xhr-polling closed due to exceeded duration
   debug - setting request GET /socket.io/1/xhr-polling/JfaWyiP3YqTRmqyzz4z6?t=1389965419417
   debug - setting poll timeout
   debug - discarding transport
   debug - cleared close timeout for client JfaWyiP3YqTRmqyzz4z6

这清楚地表明数据已经到达Node JS应用程序。

Answer 1

我找到了解决问题的方法..

问题是我正在创建数据库连接池，但我没有使用dbConn.release();发布连接

一旦池中的连接耗尽，应用程序就会一直等待从池中提取数据库连接。

简而言之，魔鬼在细节中。我在问题中没有提到的细节。哈哈哈.. !!

节点JS + Socket.io应用程序在一段时间后停止接收事件

1 个答案: