net.server_select: Add and improve some comments.

diff --git a/net/server_select.lua b/net/server_select.lua
index 86c9daef24ae7e8fd63a130a28177b95c9ddde05..983b06a20daeec9d6b9ed8cee0781c47c72a35c8 100644 (file)
--- a/net/server_select.lua
+++ b/net/server_select.lua
@@ -847,6 +847,7 @@ loop = function(once) -- this is the main loop of the program
                end
                _currenttime = luasocket_gettime( )
 
+               -- Check for socket timeouts
                local difftime = os_difftime( _currenttime - _starttime )
                if difftime > _checkinterval then
                        _starttime = _currenttime
@@ -866,6 +867,7 @@ loop = function(once) -- this is the main loop of the program
                        end
                end
 
+               -- Fire timers
                if _currenttime - _timer >= math_min(next_timer_time, 1) then
                        next_timer_time = math_huge;
                        for i = 1, _timerlistlen do
@@ -876,8 +878,9 @@ loop = function(once) -- this is the main loop of the program
                else
                        next_timer_time = next_timer_time - (_currenttime - _timer);
                end
-               socket_sleep( _sleeptime ) -- wait some time
-               --collectgarbage( )
+
+               -- wait some time (0 by default)
+               socket_sleep( _sleeptime )
        until quitting;
        if once and quitting == "once" then quitting = nil; return; end
        return "quitting"