a simple node.js ajax get to post proxy server.

post-proxy-server.coffee

http = require("http")                                                                                                                                                                  
q = require("querystring")
url = require("url")
server = http.createServer().listen 9006

server.on "request", (req, res) ->
  params = url.parse(req.url, true).query
  callbackFn = "callback"

  if params.url is undefined or params.url is ""
    res.write "missing target url"
    res.end()
    return
 
  if params.data is undefined or params.data is ""
    res.write "missing post data"
    res.end()
    return
 
  if params.callback isnt undefined and params.callback isnt ""
    callbackFn = params.callback

  # console.log callbackFn
  requestUrl = url.parse(params.url)
  # console.log requestUrl
  
  post_data = params.data

  options =
    host: requestUrl.hostname
    path: requestUrl.path
    method: "POST"
    headers:
      "Content-Length": post_data.length
      "Content-Type": "application/json"

  client = http.request(options)
  client.on "response", (response) ->
    data = ""
    response.setEncoding('utf8')
    response.on "data", (chunk) ->
      data += chunk
    response.on "end", () =>
      @emit("end",data)

  client.write(post_data)
  client.end()

  client.on "end", (data) ->
    res.write "#{callbackFn} (#{data})"
    res.end()

console.log "post proxy running on 9006"