Corrected with rubocop cop 'Style/InfiniteLoop'.

.rubocop.yml

@@ -262,8 +262,6 @@ Lint/UnreachableCode:
   Enabled: false
 Lint/ShadowingOuterLocalVariable:
   Enabled: false
-Style/InfiniteLoop:
-  Enabled: false
 Lint/Eval:
   Enabled: false
 Style/ModuleFunction:

app/controllers/long_polling_controller.rb

@@ -120,7 +120,7 @@ class LongPollingController < ApplicationController
 
       # set max loop time to 24 sec. because of 30 sec. timeout of mod_proxy
       count = 12
-      while true
+      loop do
         count = count - 1
         queue = Sessions.queue( client_id )
         if queue && queue[0]

app/models/scheduler.rb

@@ -7,7 +7,7 @@ class Scheduler < ApplicationModel
     Thread.abort_on_exception = true
 
     jobs_started = {}
-    while true
+    loop do
       logger.info "Scheduler running (runner #{runner} of #{runner_count})..."
 
       # reconnect in case db connection is lost
@@ -34,7 +34,7 @@ class Scheduler < ApplicationModel
 
     Thread.new {
       if job.period
-        while true
+        loop do
           self._start_job( job, runner, runner_count )
           job = Scheduler.lookup( id: job.id )
 

lib/sessions.rb

@@ -505,7 +505,7 @@ returns
     end
 
     Thread.abort_on_exception = true
-    while true
+    loop do
       client_ids = self.sessions
       client_ids.each { |client_id|
 

lib/sessions/client.rb

@@ -21,7 +21,7 @@ class Sessions::Client
     backend_pool = []
     user_id_last_run = nil
     loop_count = 0
-    while true
+    loop do
 
       # get connection user
       session_data = Sessions.get( @client_id )