replay.html

<script>
var whitelist_domains = [];

function generate(){
  var har = document.getElementById('har').value;
  var entries = JSON.parse(har).log.entries;
  var default_headers = false; 

  var whitelist_domains = whitelist.value == '' ? [] : whitelist.value.split(',');
  var cache = {};
  var out="";

  for(var i = 0; i < entries.length;i++){
    var request = entries[i].request;
    var domain = request.url.split('/')[2];

    if(whitelist_domains.length){
      if(whitelist_domains.indexOf(domain) == -1)
      	continue;
    }

    if(!default_headers){
      default_headers = headers_to_hash(request.headers,{});
      out += "function get_headers(){return "+JSON.stringify(default_headers, undefined, 2)+"}\n\n";

    }

    var cache_key = request.method+" "+request.url;
    if(cache[cache_key]){
      continue;
    }
    cache[cache_key] = true;

    var hdr = headers_to_hash(request.headers, default_headers)
    hdr = hdr.length ? to_json(hdr) : '{}';

    var body = '"'+((request.postData && request.postData.text) ? request.postData.text : '')+'"';

    var expect = entries[i].response.status;
    if(entries[i].response.redirectURL) expect += " "+entries[i].response.redirectURL;

    var command = "run(\"" + request.method + "\",\"" + request.url + "\",\n"+
      body+','+hdr+",\n\""+expect+ "\");\n";

    if(race.checked){
      command = "for(var i=0;i<5;i++){  "+command+"}\n"
    }

    out += command; 

  }
  document.getElementById('out').innerHTML = out
}

function to_json(obj){
  return JSON.stringify(obj, undefined, 2);
}

function headers_to_hash(headers, default_headers){
  var back = {}
  for(var i = 0;i<headers.length;i++){
  	if(default_headers[headers[i].name] && default_headers[headers[i].name] == headers[i].value){
  	  continue;
  	}

    back[headers[i].name] = headers[i].value;
  }
  return back;
}

</script>

<textarea placeholder="paste HAR here" raws=40 cols=80 onchange="generate();" id="har"></textarea><br>
<input onchange="generate();" size=40 placeholder="Comma separated whitelist domains" id="whitelist"><input type="checkbox" onchange="generate();"  id="race"> Race condition

<pre>
var request = require('request');

function run(method, url, body, new_headers, expect){
  var headers = get_headers();
  for (var n in new_headers) { headers[n] = new_headers[n]; }

  console.log("sent at "+process.hrtime().join(' '));

  var opts = {
    method:method,
    url:url,
    headers: headers,
    body: body
  }

  request(opts, function(error, response, body) {
    //response.statusCode
    console.log(method, url, expect, " | ", response.statusCode, body.substr(1000))
  })
}
</pre>

<pre id="out"></pre>