proxy-gremlin

Proxy Gremlin

Proxy Gremlin is a tiny library that helps you to intercept and alter proxied responses. It is a middleware-type tool intended for use with node-http-proxy.

Example

var http    = require('http')
  , proxy   = require('http-proxy')
  , gremlin = require('proxy-gremlin')

http.createServer(function(req, res) { // start an http server

  // Proxy the request
  proxy.proxyRequest(req, res, {
    host: proxiedHost, // put your proxied host here
    port: proxiedPort  // put your proxied port here
  })

  // tell proxy-gremlin to intercept this response before it goes out
  gremlin.intercept(res, function interceptor(buffer) {

    // log buffered response info
    console.log(buffer.headers)
    console.log(buffer.encoding)
    console.log(buffer.statusCode)
    console.log(buffer.getData())

    // change the response
    buffer.headers['Content-Type'] = 'text/html' // change a header
    buffer.setData('Hello world')                // change the response's data
  })

}).listen(8080)

License

MIT