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node js chunked transfer encoding


node js chunked transfer encoding  using -'node.js'

var fs = require('fs')
var http = require('http')

var buf=function(res,fd,i,s,buffer){
 if(i+buffer.length<s){
  fs.read(fd,buffer,0,buffer.length,i,function(e,l,b){
   res.write(b.slice(0,l))
   //console.log(b.toString('utf8',0,l))
   i=i+buffer.length
   buf(res,fd,i,s,buffer)
  })
 }
 else{
  fs.read(fd,buffer,0,buffer.length,i,function(e,l,b){
   res.end(b.slice(0,l))
   fs.close(fd)
  })
 }
}

var app = function(req,res){
 var head={'Content-Type':'text/html; charset=UTF-8'}
 switch(req.url.slice(-3)){
  case '.js':head={'Content-Type':'text/javascript'};break;
  case 'css':head={'Content-Type':'text/css'};break;
  case 'png':head={'Content-Type':'image/png'};break;
  case 'ico':head={'Content-Type':'image/x-icon'};break;
  case 'ogg':head={'Content-Type':'audio/ogg'};break;
  case 'ebm':head={'Content-Type':'video/webm'};break;
 }
 head['Transfer-Encoding']='chunked'
 res.writeHead(200,head)
 fs.open('.'+req.url,'r',function(err,fd){
  fs.fstat(fd,function(err, stats){
   console.log('.'+req.url+' '+stats.size+' '+head['Content-Type']+' '+head['Transfer-Encoding'])
   var buffer = new Buffer(100)
   buf(res,fd,0,stats.size,buffer)
  })
 })
}

http.createServer(app).listen(8000,"127.0.0.1")
console.log('GET http://127.0.0.1:8000/appwsgi/www/index.htm')


I think I am violating http 1.1 here? Text files do seem to work fine, but that could be coincidental. Is my header 200 ok or need it to be 100? Is one header sufficient?
    

asked Sep 18, 2015 by manju bhargava
0 votes
33 views



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