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Create an internet connection from Lua?

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Posted by Twisol   USA  (2,257 posts)  Bio
Date Mon 08 Jun 2009 01:54 AM (UTC)

Amended on Mon 08 Jun 2009 01:55 AM (UTC) by Twisol

Message
I'm working on a number of plugins for MUSHclient, a few of which I need to be able to make a connection for. For example, I have some maps of Achaea on my website (in textual form), and I want to query my website and retrieve a given map. Is it possible to do this easily, or will I need to get a Lua extension DLL for this sort of networking functionality?
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
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Posted by Fadedparadox   USA  (91 posts)  Bio
Date Reply #1 on Mon 08 Jun 2009 02:49 AM (UTC)
Message
I was actually looking into that earlier, and I found these:

http://www.lua.org/pil/9.4.html
http://luaforge.net/projects/luasocket/
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Posted by Nick Gammon   Australia  (23,122 posts)  Bio   Forum Administrator
Date Reply #2 on Mon 08 Jun 2009 02:58 AM (UTC)
Message
There is a discussion here: http://www.gammon.com.au/forum/bbshowpost.php?id=4935
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Twisol   USA  (2,257 posts)  Bio
Date Reply #3 on Mon 08 Jun 2009 09:45 PM (UTC)

Amended on Mon 08 Jun 2009 09:51 PM (UTC) by Twisol

Message
It looks like the LuaSocket version you reference in that thread, Nick, is based on Lua 5.0; the directory structure and files in the version I downloaded appear to be different as well (for example, I can't find 'lua.lua' anywhere in the most recent version). I'll have to mess around with it to see how exactly to get it working.

Thanks, both of you. Hopefully I'll be able to get this to work with the plugin ideas I had. :)
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
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Posted by Nick Gammon   Australia  (23,122 posts)  Bio   Forum Administrator
Date Reply #4 on Tue 09 Jun 2009 12:10 AM (UTC)
Message
See this thread: http://www.gammon.com.au/forum/?id=7322

In particular, the part about "how to get luasocket to work" as it was written for Lua 5.1.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (23,122 posts)  Bio   Forum Administrator
Date Reply #5 on Tue 09 Jun 2009 12:12 AM (UTC)
Message
Or: http://www.gammon.com.au/forum/?id=8319
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Twisol   USA  (2,257 posts)  Bio
Date Reply #6 on Tue 09 Jun 2009 03:28 AM (UTC)
Message
I followed the directions, and tried the test code via the intermediate window (ctrl+I), but I get errors. I was sure to enable the DLL loading in the Global Preferences and reload my script file before trying, and I unzipped the luasocket files into the root MUSHclient folder just as your directions specified. Here are the errors:


Run-time error
World: VadiSol
Immediate execution
H:\Program Files\MUSHclient\lua\socket.lua:13: module 'socket.core' not found:
        no field package.preload['socket.core']
        no file '.\socket\core.lua'
        no file 'H:\Program Files\MUSHclient\lua\socket\core.lua'
        no file 'H:\Program Files\MUSHclient\lua\socket\core\init.lua'
        no file 'H:\Program Files\MUSHclient\socket\core.lua'
        no file 'H:\Program Files\MUSHclient\socket\core\init.lua'
stack traceback:
        [C]: in function 'require'
        H:\Program Files\MUSHclient\lua\socket.lua:13: in main chunk
        [C]: in function 'require'
        H:\Program Files\MUSHclient\socket\http.lua:11: in main chunk
        [C]: in function 'require'
        [string "Immediate"]:1: in main chunk



If you give 'H:' a weird look, I run MUSH off of my thumb drive, and that's the letter it gets normally on this particular computer.
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
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Posted by WillFa   USA  (525 posts)  Bio
Date Reply #7 on Tue 09 Jun 2009 03:35 AM (UTC)
Message
The files should be in the Lua folder under mushclient.exe's directory.

i.e. H:\Program Files\Mushclient\Lua\Socket\core.dll

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Posted by Twisol   USA  (2,257 posts)  Bio
Date Reply #8 on Tue 09 Jun 2009 03:44 AM (UTC)
Message
That's not what Nick said in the post...

Quote:

Unzip that into the same directory as MUSHclient.exe (eg. c:\Program Files\MUSHclient if that is where you put it).
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
Top
Posted by WillFa   USA  (525 posts)  Bio
Date Reply #9 on Tue 09 Jun 2009 04:04 AM (UTC)
Message
And you did that, and it didn't work.

Do this, and it will. ;)
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Posted by Twisol   USA  (2,257 posts)  Bio
Date Reply #10 on Tue 09 Jun 2009 04:12 AM (UTC)
Message
It still didn't work. =/
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
Top
Posted by WillFa   USA  (525 posts)  Bio
Date Reply #11 on Tue 09 Jun 2009 04:18 AM (UTC)
Message

C:\Program Files\MUSHclient\lua\mime\core.dll
C:\Program Files\MUSHclient\lua\socket\core.dll
C:\Program Files\MUSHclient\lua\socket\ftp.lua
C:\Program Files\MUSHclient\lua\socket\http.lua
C:\Program Files\MUSHclient\lua\socket\ltn12.lua
C:\Program Files\MUSHclient\lua\socket\mime.lua
C:\Program Files\MUSHclient\lua\socket\smtp.lua
C:\Program Files\MUSHclient\lua\socket\socket.lua
C:\Program Files\MUSHclient\lua\socket\tp.lua
C:\Program Files\MUSHclient\lua\socket\url.lua



/http = require "socket.http"
/print(http.request("http://www.mushclient.com"))


works fine for me. I'm using LuaSocket 2.0.2 downloaded from LuaForge.
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Posted by Twisol   USA  (2,257 posts)  Bio
Date Reply #12 on Tue 09 Jun 2009 04:26 AM (UTC)
Message
I'm using the zip Nick supplied in that thread, it's not working no matter what way I do it. I'll have to try it with the one from LuaForge.
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
Top
Posted by Twisol   USA  (2,257 posts)  Bio
Date Reply #13 on Tue 09 Jun 2009 05:03 AM (UTC)
Message
No luck with the one from LuaForge, even using the exact directory layout you have there. What in the world?
'Soludra' on Achaea

Blog: http://jonathan.com/
GitHub: http://github.com/Twisol
Top
Posted by Nick Gammon   Australia  (23,122 posts)  Bio   Forum Administrator
Date Reply #14 on Tue 09 Jun 2009 06:10 AM (UTC)

Amended on Tue 09 Jun 2009 06:11 AM (UTC) by Nick Gammon

Message
When I said "Unzip that into the same directory as MUSHclient.exe" I meant, preserving the directory structure in the .zip file. That is, in the folder under where MUSHclient is installed you should have three subfolders (in addition to the usual ones), namely:


  • lua
  • mime
  • socket


In those subfolders should be additional files. My structure isn't quite what Willfa has, I'll do a screenshot (see next page). However unzipping and preserving the directory structure should do it, as I said in the post.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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