multithreading - Http headers for starting a multithreaded download -


i trying create multi threaded downloader using nodejs. able download file using single thread. simple http.get request in nodejs.

to create multi threaded downloader have send http headers in request not able figure out how. want know http headers should sending able download range of bytes offset. 

var http = require('http');  var options = {   host: 'hostname.com',   path: '/path/to/a/large/file.zip',   headers: {     //some headers me download part of file.   } };  callback = function(response) {   response.on('data', function (chunk) {      //write chunk file   }); }  http.request(options, callback).end();

you need range header. example given in wiki 

range: bytes=500-999

for more detail see 14.35 range in http header definitions


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