Re: Using luasocket to read from the keyboard

[Nick Gammon <nick@...>]

Further to my question about 65 simultaneous connections. I had the  
idea of running two copies of my stress-test program, to see if the  
server still reported 65 players (and thus the server would not handle  
more than 65 at a time), or whether it would reach 130 players.

Without wishing to bore you with lots of randomly-generated names,  
these are my results:

  2 Warrior     Acilactred the Recruit.
  2 Augurer     Goniver the Understudy of Magic.
  2 Thief       Grodus the Footpad.
... etc etc ...
  1 Thief       Erauw the Pilferess.
  1 Warrior     Dweimas the Swordpupil.
  1 Warrior     Glemos the Swordpupil.

----------------------------------- 
[ IMMORTALS ]------------------------------

Supreme Entity  Admin the Attendant.
130 players.

It seems that simply running two copies of the identical Lua script,  
which attempts to make 200 connections, results in 130 connections -  
65 per copy. That seems to indicate that 65 is some sort of limiting  
factor inside luasocket.

... time passes ....

Well, this is a laugh. This particular script *was* running on  
Windows, so it seems that 64 or 65 is some sort of limitation on a  
Windows program calling select under luasocket (or indeed, anywhere).  
However when I ran it on a Unix look-alike (OS/X) it successfully made  
200 connections, and interacted with them. Here are the new results:

  1 Mage        Clilarka the Apprentice of Magic.
  2 Druid       Ereranyth the Attendant.
  1 Cleric      Silara the Believer.
... and so on ...
  1 Vampire     Wiciradfrid the Apprentice of Blood.
  1 Mage        Tirangwen the Apprentice of Magic.

----------------------------------- 
[ IMMORTALS ]------------------------------

Supreme Entity  Admin the Attendant.
329 players.

This demonstrates the server can handle 329 players, the OS/X version  
of luasocket can make 200 connections, and the Windows version made 64  
each. Well, that sort-of adds up to 329, a couple of the bots got  
killed. ;)

I think we can safely speculate that World of Warcraft is not  
implemented using Windows Sockets. :P

- Nick