http OPTIONS req returns 502 bad gateway from rocky server

[sergueyarellano]

Hi @h2non I'm making an OPTIONS request and rocky returns a 502 to the client.

I'm just forwarding:

  proxy
    .forward('http://127.0.0.1:9990');

  proxy
    .all('/*')

localhost 9990 is not getting any request, rocky server is complaining and responding 502.

Any idea?

[h2non]

toxy does not support CORS by default and therefore does not handle OPTIONS pre-flight requests. Instead, it invites you to plug in a third-party custom middleware that provides the required capabilities in your proxy.

I wrote a simple representative working toxy proxy server that enables CORS (via cors package):

const cors = require('cors')
const toxy = require('toxy')
const { poisons, rules } = toxy

// Create toxy proxy
const proxy = toxy({
  forwardHost: true,
  timeout: 6e4,
  proxyTimeout: 6e4
})

// Enable CORS via middleware
proxy.use(cors())

// Default global traffic forwaring
proxy.forward('http://httpbin.org')

// Route all traffic with custom poisoning
proxy.all('/*')
  .poison(poisons.bandwidth({ bps: 1024 }))
  .withRule(rules.method('GET'))
  .withRule(rules.probability(50))

// Listen on the network
proxy.listen(3000)
console.log('Server listening on port:', 3000)

You can test it by fetching:
http://localhost:3000/image/jpeg