title: How to handle ajax/http-post request (responsetype: arraybuffer) using nodejs+express in the backend
body: <p>Situation : Client js sends ajax request to nodejs express server.</p>
  
  <p>Client </p>
  
  <pre><code>xmlHttpRequest=new XMLHttpRequest();  
  xmlHttpRequest.open("POST","/some/server/path,true);
  xmlHttpRequest.responseType="arraybuffer";
  xmlHttpRequest.send(new Uint8Array(arraybufferobject));
  </code></pre>
  
  <p>Server(so far)</p>
  
  <pre><code>var express = require('express');
  var server = express();
  server.use(express.static(__dirname));
  server.use(express.bodyParser());
  server.post('/goforms/modbus/',function(req,res,next){
      //How to access the uint8array || arraybuffer ?
  });
  
  server.listen(80);
  </code></pre>
  
  <p>Im stuck at this point. How to access the HTTP POST data? </p>