Created
June 26, 2014 05:36
-
-
Save cmawhorter/a527a2350d5982559bb6 to your computer and use it in GitHub Desktop.
Node script to forward all http requests to another server and return the response with an access-control-allow-origin header. Follows redirects.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Simple proxy/forwarding server for when you don't want to have to add CORS during development. | |
| // Usage: node proxy.js | |
| // Open browser and navigate to http://localhost:9100/[url] | |
| // Example: http://localhost:9100/http://www.google.com | |
| // This is *NOT* for anything outside local development. It has zero error handling among other glaring problems. | |
| // This started as code I grabbed from this SO question: http://stackoverflow.com/a/13472952/670023 | |
| var url = require('url') | |
| , http = require('http') | |
| , https = require('https'); | |
| var PORT = process.argv[2] || 9100; | |
| var server = http.createServer(function(req, res) { | |
| var reqUrl = req.url.substr(1); | |
| console.log('==> Making req for' + reqUrl + '\n'); | |
| req.pause(); | |
| var options = url.parse(reqUrl); | |
| options.headers = req.headers; | |
| options.method = req.method; | |
| options.agent = false; | |
| options.headers['host'] = options.host; | |
| var connector = (options.protocol == 'https:' ? https : http).request(options, function(serverResponse) { | |
| console.log('<== Received res for', serverResponse.statusCode, reqUrl); | |
| console.log('\t-> Request Headers: ', options); | |
| console.log(' '); | |
| console.log('\t-> Response Headers: ', serverResponse.headers); | |
| serverResponse.pause(); | |
| serverResponse.headers['access-control-allow-origin'] = '*'; | |
| switch (serverResponse.statusCode) { | |
| // pass through. we're not too smart here... | |
| case 200: case 201: case 202: case 203: case 204: case 205: case 206: | |
| case 304: | |
| case 400: case 401: case 402: case 403: case 404: case 405: | |
| case 406: case 407: case 408: case 409: case 410: case 411: | |
| case 412: case 413: case 414: case 415: case 416: case 417: case 418: | |
| res.writeHeader(serverResponse.statusCode, serverResponse.headers); | |
| serverResponse.pipe(res, {end:true}); | |
| serverResponse.resume(); | |
| break; | |
| // fix host and pass through. | |
| case 301: | |
| case 302: | |
| case 303: | |
| serverResponse.statusCode = 303; | |
| serverResponse.headers['location'] = 'http://localhost:'+PORT+'/'+serverResponse.headers['location']; | |
| console.log('\t-> Redirecting to ', serverResponse.headers['location']); | |
| res.writeHeader(serverResponse.statusCode, serverResponse.headers); | |
| serverResponse.pipe(res, {end:true}); | |
| serverResponse.resume(); | |
| break; | |
| // error everything else | |
| default: | |
| var stringifiedHeaders = JSON.stringify(serverResponse.headers, null, 4); | |
| serverResponse.resume(); | |
| res.writeHeader(500, { | |
| 'content-type': 'text/plain' | |
| }); | |
| res.end(process.argv.join(' ') + ':\n\nError ' + serverResponse.statusCode + '\n' + stringifiedHeaders); | |
| break; | |
| } | |
| console.log('\n\n'); | |
| }); | |
| req.pipe(connector, {end:true}); | |
| req.resume(); | |
| }); | |
| console.log('Listening on http://localhost:%s...', PORT); | |
| server.listen(PORT); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Listening on http://localhost:9100...
==> Making req for
<== Received res for 302
-> Request Headers: { protocol: null,
slashes: null,
auth: null,
host: null,
port: null,
hostname: null,
hash: null,
search: null,
query: null,
pathname: null,
path: null,
href: '',
headers:
{ host: null,
connection: 'keep-alive',
accept: 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,/;q=0.8',
'upgrade-insecure-requests': '1',
'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36',
'accept-encoding': 'gzip, deflate, sdch',
'accept-language': 'en-US,en;q=0.8,hi;q=0.6,it;q=0.4,pt;q=0.2,de;q=0.2',
cookie: 'PYPCLOUDY=P566GmTmSboSORtPFeAgB1' },
method: 'GET',
agent: false }
server: 'Apache',
location: 'https://localhost/',
vary: 'Accept-Encoding',
'content-encoding': 'gzip',
'content-length': '181',
'keep-alive': 'timeout=5',
connection: 'Keep-Alive',
'content-type': 'text/html; charset=iso-8859-1' }
-> Redirecting to http://localhost:9100/https://localhost/
==> Making req forhttps://localhost/
events.js:85
throw er; // Unhandled 'error' event
^
Error: self signed certificate
at Error (native)
at TLSSocket. (_tls_wrap.js:936:36)
at TLSSocket.emit (events.js:104:17)
at TLSSocket._finishInit (_tls_wrap.js:467:8)
i got above error , please help me how to have a proxy server in node js which opens web ui of another machine and also forwards request to the other machine.