Cloudflare Developers•8mo ago

How to test two binding workers in dev environment?

I have 2 workers, one of which needs to call the fetch result of the other worker. I understand that we can modify the services binding in wrangler.toml to enable two workers to call each other. But if I don’t want to deploy and just want to test the modification results locally (wrangler dev), is there a more convenient method? For Example: worker A: services = [ { binding = "WORKER_B", service = "worker_b" } ] I run wrangler dev in worker_b Can I use fetch method in work_A to get result from work_B? If I can't use fetch, what method can I use?

2 Replies

oof2win2•8mo ago

you run wrangler dev in both directories assuming its the same instance of wrangler (say installed globally) it will auto connect

Vlady•7mo ago

Hey folks, is there a way to explicitly point to the port of the other instance of wrangler? I'm trying to proxy a local API worker from a pages, but getting this error

[wrangler] Couldn't find `wrangler dev` session for service "yupty-api" to proxy to

[wrangler] Couldn't find `wrangler dev` session for service "yupty-api" to proxy to

My pages project config:

name = "front"
dev.port = 3000
services = [
  { binding = "API", service = "yupty-api" }
]

name = "front"
dev.port = 3000
services = [
  { binding = "API", service = "yupty-api" }
]

My API project config:

name = "yupty-api"
dev.port = 3010

name = "yupty-api"
dev.port = 3010

I restarted my computer and it found the other worker 🤷🏼‍♂️ ✅

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How to test two binding workers in dev environment?