[Bug][Federation] Request that loops

I hope you are well.

Description:

I am currently in version 3.4.2 of the official docker image ( rocketchat/rocket.chat ) , when I switch to 3.6.2 the migration is done correctly, but when I go to the federation dashboard the application crashes.

Steps to reproduce:

Go to Admin
Click on Federation Dashboard

Expected behavior:

See the dashboard

Actual behavior:

I noticed that a loop is created in the developer console with many call of :

/api/v1/method.call/federation%3AgetOverviewData && /api/v1/method.call/federation%3AgetServers

The application ends up crashing due to api limits.

Server Setup Information:

• Version of Rocket.Chat Server: 3.6.2
• Operating System: linux
• Deployment Method: docker
• Number of Running Instances: 1
• DB Replicaset Oplog: Enabled
• NodeJS Version: 12.16.1 - x64
• MongoDB Version: 4.0

Client Setup Information

• Desktop App or Browser Version: Chromium Version 85.0.4183.102 (Official Build) snap (64-bit)
• Operating System: Ubuntu 20.04

Additional context

Relevant logs:

Exception while invoking method federation:getOverviewData Error: Error, too many requests. Please slow down. You must wait 27 seconds before trying again. [too-many-requests]
    at Object.post (app/api/server/v1/misc.js:255:11)
    at app/api/server/api.js:394:82
    at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12)
    at Object._internalRouteActionHandler [as action] (app/api/server/api.js:394:39)
    at Route.share.Route.Route._callEndpoint (packages/nimble_restivus/lib/route.coffee:150:32)
    at packages/nimble_restivus/lib/route.coffee:59:33
    at packages/simple_json-routes.js:98:9
API ➔ debug Success {
  statusCode: 200,
  body: {
    message: '{"msg":"result","id":"3947","error":{"isClientSafe":true,"error":"too-many-requests","reason":"Error, too many requests. Please slow down. You must wait 27 seconds before trying again.","details":{"timeToReset":26564},"message":"Error, too many requests. Please slow down. You must wait 27 seconds before trying again. [too-many-requests]","errorType":"Meteor.Error"}}',
    success: true
  }
}
API ➔ debug POST: /api/v1/method.call/federation%3AgetServers
RateLimiter ➔ info DDP RATE LIMIT: limit by userId per method
RateLimiter ➔ info {
  "allowed": false,
  "timeToReset": 6863,
  "numInvocationsLeft": 0,
  "userId": "xxxxxxxxxxxxx",
  "clientAddress": "x.x.x.x",
  "type": "method",
  "name": "federation:getServers",
  "connectionId": "xxxxxxxxx",
  "broadcastAuth": false
}

Thank you

Start at the Federation Dashboard and trace its requests to federation:getOverviewData and federation:getServers. Inspect the referenced API paths in app/api/server/v1/misc.js and app/api/server/api.js, reproduce the repeated calls, and verify that the dashboard loads without looping or triggering rate-limit errors.