Local firestore emulator webchannel configure not work

[REQUIRED] Environment info

firebase-tools: 7.3.1

Platform: Linux(use Docker node:12.9.1-stretch image)

[REQUIRED] Test case

// firebase.json
{
  "firestore": {
    "rules": "firestore.rules"
  },
  "emulators": {
    "firestore": {
      "host": "0.0.0.0",
      "webchannel-port": 10055
    }
  }
}

$ npx firebase emulators:start --only firestore

[REQUIRED] Steps to reproduce

$ npm i firebase-tools

[REQUIRED] Expected behavior

root@8057431e08b7:/usr/src/app (master *)# npx firebase emulators:start --only firestore
firestore: Serving WebChannel traffic on at http://0.0.0.0:10055

• host configuration
• port configuration
• webchannel host configuration
• webchannel port configuration

is working. In particular, I want webchannel host 0.0.0.0.

[REQUIRED] Actual behavior

root@8057431e08b7:/usr/src/app (master *)# npx firebase emulators:start --only firestore --debug
[2019-09-05T20:57:30.281Z] ----------------------------------------------------------------------
[2019-09-05T20:57:30.293Z] Command:       /usr/local/bin/node /usr/src/app/node_modules/.bin/firebase emulators:start --only firestore --debug
[2019-09-05T20:57:30.295Z] CLI Version:   7.3.1
[2019-09-05T20:57:30.295Z] Platform:      linux
[2019-09-05T20:57:30.296Z] Node Version:  v12.9.1
[2019-09-05T20:57:30.298Z] Time:          Thu Sep 05 2019 20:57:30 GMT+0000 (Coordinated Universal Time)
[2019-09-05T20:57:30.298Z] ----------------------------------------------------------------------

i  Starting emulators: ["firestore"]
i  firestore: Serving WebChannel traffic on at http://0.0.0.0:8081
[2019-09-05T20:57:30.352Z] Ignoring unsupported arg: projectId
[2019-09-05T20:57:30.353Z] Ignoring unsupported arg: auto_download
[2019-09-05T20:57:30.355Z] Starting emulator firestore with command {"binary":"java","args":["-Duser.language=en","-jar","/root/.cache/firebase/emulators/cloud-firestore-emulator-v1.8.2.jar","--host","0.0.0.0","--port",8080,"--rules","/usr/src/app/firestore.rules","--webchannel_port",8081],"optionalArgs":["port","webchannel_port","host","rules","functions_emulator"]}
i  firestore: Emulator logging to firestore-debug.log
[2019-09-05T20:57:33.244Z] API endpoint: http://0.0.0.0:8080

[2019-09-05T20:57:33.246Z] WebChannel endpoint: http://localhost:8081
If you are using a library that supports the FIRESTORE_EMULATOR_HOST environment variable, run:

   export FIRESTORE_EMULATOR_HOST=0.0.0.0:8080

Dev App Server is now running.


✔  firestore: Emulator started at http://0.0.0.0:8080
i  firestore: For testing set FIRESTORE_EMULATOR_HOST=0.0.0.0:8080
✔  All emulators started, it is now safe to connect.

Probrem1. Host configure not work

cli display [2019-09-05T20:57:33.244Z] API endpoint: http://0.0.0.0:8080. But, log display [2019-09-05T20:57:33.246Z] WebChannel endpoint: http://localhost:8081.

Host is different!. And Host configure not work.

Probrem2. webchannel-port configure not work

or this feature does not exist?

[ryanpbrewster]

Done, should go out with the next release. Thanks for filing this 😃

[ryanpbrewster]

Ah, gotcha, you want the webchannel traffic to inherit the normal hostname. Totally reasonable. I’ll plumb that through.