From 6ad81c62702028559f2ccc2851842c871a2c79c4 Mon Sep 17 00:00:00 2001
From: Tom Gilbert <tom@linuxbrit.co.uk>
Date: Sat, 27 Aug 2005 14:16:42 +0000
Subject: [PATCH] better setup for ping timeouts.

I need to work on the timer code, it's not currently possible to create a
timer within a timer event, due to the thread stop/start thing
---
 lib/rbot/ircbot.rb | 44 +++++++++++++++++++++-----------------------
 lib/rbot/timer.rb  |  4 ++++
 2 files changed, 25 insertions(+), 23 deletions(-)

diff --git a/lib/rbot/ircbot.rb b/lib/rbot/ircbot.rb
index 3881771d..1374929d 100644
--- a/lib/rbot/ircbot.rb
+++ b/lib/rbot/ircbot.rb
@@ -140,7 +140,8 @@ class IrcBot
     Dir.mkdir("#{botclass}/logs") unless File.exist?("#{botclass}/logs")
 
     @ping_timer = nil
-    @timeout_timer = nil
+    @pong_timer = nil
+    @last_ping = nil
     @startup_time = Time.new
     @config = BotConfig.new(self)
 # TODO background self after botconfig has a chance to run wizard
@@ -186,9 +187,7 @@ class IrcBot
       @socket.puts "PONG #{data[:pingid]}"
     }
     @client[:pong] = proc {|data|
-      # cancel the timeout timer
-      debug "got a pong from the server, cancelling timeout"
-      remove_timeout_timer
+      @last_ping = nil
     }
     @client[:nick] = proc {|data|
       sourcenick = data[:sourcenick]
@@ -574,34 +573,33 @@ class IrcBot
       @timer.remove @ping_timer
       @ping_timer = nil
     end
-    remove_timeout_timer
-    timeout = @config['server.ping_timeout']
-    return unless timeout > 0
-    timeout = 30 if timeout > 30
+    unless @pong_timer.nil?
+      @timer.remove @pong_timer
+      @pong_timer = nil
+    end
+    return unless @config['server.ping_timeout'] > 0
     # we want to respond to a hung server within 30 secs or so
     @ping_timer = @timer.add(30) {
-      remove_timeout_timer
+      @last_ping = Time.now
       @socket.puts "PING :rbot"
-      @timeout_timer = @timer.add_once(timeout) {
-        debug "no PONG from server for #{timeout} seconds, reconnecting"
-        begin
-          @socket.shutdown
-        rescue
-          debug "couldn't shutdown connection (already shutdown?)"
+    }
+    @pong_timer = @timer.add(10) {
+      unless @last_ping.nil?
+        diff = Time.now - @last_ping
+        unless diff < @config['server.ping_timeout']
+          debug "no PONG from server for #{diff} seconds, reconnecting"
+          begin
+            @socket.shutdown
+          rescue
+            debug "couldn't shutdown connection (already shutdown?)"
+          end
         end
-      } if @config['server.ping_timeout']
+      end
     }
   end
 
   private
 
-  def remove_timeout_timer
-    unless @timeout_timer.nil?
-      @timer.remove(@timeout_timer)
-      @timeout_timer = nil
-    end
-  end
-
   # handle help requests for "core" topics
   def corehelp(topic="")
     case topic
diff --git a/lib/rbot/timer.rb b/lib/rbot/timer.rb
index 64324b6a..03a4c91e 100644
--- a/lib/rbot/timer.rb
+++ b/lib/rbot/timer.rb
@@ -78,6 +78,7 @@ module Timer
     # 
     # add an action to the timer
     def add(period, data=nil, &func)
+      debug "adding timer, period #{period}"
       @handle += 1
       @timers[@handle] = Action.new(period, data, &func)
       start_on_add
@@ -90,6 +91,7 @@ module Timer
     # 
     # add an action to the timer which will be run just once, after +period+
     def add_once(period, data=nil, &func)
+      debug "adding one-off timer, period #{period}"
       @handle += 1
       @timers[@handle] = Action.new(period, data, true, &func)
       start_on_add
@@ -135,6 +137,8 @@ module Timer
           @next_action_time = timer.in
         end
       }
+      #debug "ticked. now #{@timers.length} timers remain"
+      #debug "next timer due at #{@next_action_time}"
     end
 
     # for backwards compat - this is a bit primitive
-- 
2.39.5