Workers Routes Replacement

I want to create a workers route to:

a.com/api/sth
b.com/api/sth
c.com/api/sth

a.com/api/sth
b.com/api/sth
c.com/api/sth

if worker does not have response, then fetch origin a.com/api/sth as result.
how to write the fetch codes in the worker script?

3 Replies

kian•13mo ago

export default {
  async fetch(req, env, ctx) {
    // do whatever to generate a response

    if (!response) {
      return fetch(req);
    }

    return response;
  }
}

export default {
  async fetch(req, env, ctx) {
    // do whatever to generate a response

    if (!response) {
      return fetch(req);
    }

    return response;
  }
}

willinOP•13mo ago

but this api does not exists on b.com/c.com if i change req url hostname, can it work?

kian•13mo ago

Sure, just do fetch(url, req) where url is the a.com one

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Workers Routes Replacement