Node.js 如何使用 net.Server 处理数据包碎片 [英] Node.js how to handle packet fragmentation with net.Server

问题描述

当 net.Server 接收到超过 1500 字节(默认 mtu)的数据时，将针对数据包的每个片段执行 'on data' 事件.有没有办法在单个数据"调用中接收整个数据包?

When a net.Server receives data that exceeds 1500 bytes (default mtu), the 'on data' event is executed with each fragment of the packet. Is there a way to receive the whole packet in a single 'on data' call?

谢谢.

推荐答案

试试这个

var sys     = require('sys');
var net     = require('net');;

var socktimeout = 600000;
var svrport = your_port;

var svr = net.createServer(function(sock) {
  var mdata = new Buffer(0);
    //sys.puts('Connected: ' + sock.remoteAddress + ':' + sock.remotePort); 
     sock.setTimeout(socktimeout,function(){
            sock.end("timeout");
            sock.destroy();
        });

    sock.on('data', function(data) {  


        if(mdata.length != 0)
        {
          var tempBuf = Buffer.concat([mdata, data]);
          mdata = tempBuf;
        }
        else
        {
          mdata = data;
        }

        var len=got_your_Packget_length(mdata);
         
      if(mdata.length == len)
      {
        do_your_job(mdata)
        mdata = new Buffer(0);
      }


    });
 


    sock.on('error', function(err) { // Handle the connection error.
        sys.puts('error: ' + err +'\n');
    });
});
 
svr.listen(svrport);

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