Question - Using replyOptions

[thejones]

I have a general question on how to call, if possible, the onResponse method from reply-from when using http-proxy. I am successful in calling rewriteHeaders but have not had luck with the onResponse call.

I am testing with an app generated with fastify-cli.

This is what I have.

  fastify.register(proxy, {
    upstream: 'myUrl',
    prefix: '/apiProxy',
    async beforeHandler(request, reply) {
      console.log('beforeHandler from proxy called'); // works as expected
    },
    replyOptions: {
      rewriteHeaders: headers => Object.assign({ 'x-from-proxy': 'yes-indeed' }, headers), // works as expected
      onResponse: (res) => {
        console.log('here'); // Should this work? Nothing is logged at this point.
      },
    },
  });

I have tried a few iterations but wanted to know if this is a supported and (most likely) a syntax error.

I did post this in Gitter as well but my timing seems to be a bit off of when others are online (not trying to spam two places).

Any help is appreciated.

[mcollina]

That's passed as-is to fastify-reply-from (https://github.com/fastify/fastify-http-proxy/blob/master/index.js#L49). Does that option work if fastify-reply-from?

[thejones]

Thanks @mcollina for the response. Yes, fastify-reply-from when called directly does work. The same route is called in both cases with the dame options, etc. I might have some time to look into this today but if you have any suggestions please let me know.

[mcollina]

I've got no idea really

[thejones]

No worries! I will dig in and report back what I find. Appreciate the help.