Question

I’m not going to use other module like request, how about writing this with http,
What should I consider while seeding post to browserid?

error:

$ coffee server.coffee 
  info  - socket.io started
to send
to write
end?

node.js:201
    throw e; // process.nextTick error, or 'error' event on first tick
          ^
Error: getaddrinfo ENOENT
  at errnoException (dns.js:31:11)
  at Object.onanswer [as oncomplete] (dns.js:140:16)

source:

ll = console.log

fs = require 'fs'
page = fs.readFileSync 'page.html', 'utf-8'
query = require 'querystring'

client = fs.readFileSync 'client.coffee', 'utf-8'
page = page.replace '@@@', client

handler = (req, res) ->
  res.writeHead 200, 'Content-Type': 'text/html'
  res.end page

http = require 'http'
app = http.createServer handler
app.listen 8000

io = (require 'socket.io').listen app
io.set 'log level', 1
io.sockets.on 'connection', (socket) ->
  socket.emit 'ready', 'go'

  socket.on 'assertion', (data) ->
    msg = query.stringify
      assertion: data
      audience: 'localhost:8000'

    options =
      host: 'https://browserid.org'
      path: '/verify'
      method: 'POST'
      headers:
        'Content-Type':  'application/x-www-form-urlencoded'
        'Content-Length': msg.length
    ll 'to send'
    request = http.request options, (response) ->
      str = ''
      ll 'prepare'
      response.on 'data', (chunk) ->
        str += chunk
        ll str
      response.on 'end', ->
        ll str
    request.write msg
    ll 'to write'
    request.end()
    ll 'end?'

with long-stack-traces:

$ coffee server.coffee 
       info  - socket.io started
    to send
    to write
    end?
    Uncaught Error: getaddrinfo ENOENT
        at errnoException (dns.js:31:11)
        at Object.onanswer [as oncomplete] (dns.js:140:16)
    ----------------------------------------
        at EventEmitter.on
        at Array.<anonymous> (http.js:1147:12)
        at EventEmitter._tickCallback (node.js:192:40)
    ----------------------------------------
        at EventEmitter.nextTick
        at ClientRequest.onSocket (http.js:1115:11)
        at Agent.addRequest (http.js:938:9)
        at new ClientRequest (http.js:1068:16)
        at Object.request (http.js:1331:10)
        at Socket.<anonymous> (/home/chen/code/home/git/docview/learning/coffee/browserid/server.coffee:52:22)
        at Socket.$emit (events.js:67:17)
        at SocketNamespace.handlePacket (/usr/lib/nodejs/socket.io/lib/namespace.js:335:22)
    ----------------------------------------
        at EventEmitter.on
        at SocketNamespace.<anonymous> (/home/chen/code/home/git/docview/learning/coffee/browserid/server.coffee:37:19)
        at SocketNamespace.$emit (events.js:88:20)
        at connect (/usr/lib/nodejs/socket.io/lib/namespace.js:292:10)
        at /usr/lib/nodejs/socket.io/lib/namespace.js:308:13
        at SocketNamespace.authorize (/usr/lib/nodejs/socket.io/lib/namespace.js:252:5)
        at SocketNamespace.handlePacket (/usr/lib/nodejs/socket.io/lib/namespace.js:302:14)
        at Manager.handleClient (/usr/lib/nodejs/socket.io/lib/manager.js:669:30)
    ----------------------------------------
        at EventEmitter.on
        at Object.<anonymous> (/home/chen/code/home/git/docview/learning/coffee/browserid/server.coffee:35:14)
        at Object.<anonymous> (/home/chen/code/home/git/docview/learning/coffee/browserid/server.coffee:71:4)
        at Module._compile (module.js:441:26)
        at Object.run (/usr/lib/nodejs/coffee-script/lib/coffee-script/coffee-script.js:68:25)
        at /usr/lib/nodejs/coffee-script/lib/coffee-script/command.js:135:29
        at /usr/lib/nodejs/coffee-script/lib/coffee-script/command.js:110:18
        at [object Object].<anonymous> (fs.js:115:5)
        at [object Object].emit (events.js:64:17)
    Uncaught undefined

node.js:201
    throw e; // process.nextTick error, or 'error' event on first tick
          ^

Answer 1

Looking at the http.request documentation, we find:

Options:

• host: A domain name or IP address of the server to issue the request to. Defaults to ‘localhost’.
• hostname: To support url.parse() hostname is preferred over host
• port: Port of remote server. Defaults to 80.

You might try these options instead:

options =
  hostname: 'browserid.org'
  port: 443
  path: '/verify'
  method: 'POST'
  headers:
    'Content-Type':  'application/x-www-form-urlencoded'
    'Content-Length': msg.length

Edit: http.request doesn’t work for SSL requests, for this, you need to use https.request. Changing to that fixes your other error as well, and the default port is 443 so you can omit that from the options if you wish.