luasocket/samples/README

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This directory contains some sample programs using
LuaSocket. This code is not supported.
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tftp.lua -- Trivial FTP client
This module implements file retrieval by the TFTP protocol.
Its main use was to test the UDP code, but since someone
found it usefull, I turned it into a module that is almost
official (no uploads, yet).
dict.lua -- Dict client
The dict.lua module started with a cool simple client
for the DICT protocol, written by Luiz Henrique Figueiredo.
This new version has been converted into a library, similar
to the HTTP and FTP libraries, that can be used from within
any luasocket application. Take a look on the source code
and you will be able to figure out how to use it.
lp.lua -- LPD client library
The lp.lua module implements the client part of the Line
Printer Daemon protocol, used to print files on Unix
machines. It is courtesy of David Burgess! See the source
code and the lpr.lua in the examples directory.
b64.lua
qp.lua
eol.lua
These are tiny programs that perform Base64,
Quoted-Printable and end-of-line marker conversions.
get.lua -- file retriever
This little program is a client that uses the FTP and
HTTP code to implement a command line file graber. Just
run
lua get.lua <remote-file> [<local-file>]
to download a remote file (either ftp:// or http://) to
the specified local file. The program also prints the
download throughput, elapsed time, bytes already downloaded
etc during download.
check-memory.lua -- checks memory consumption
This is just to see how much memory each module uses.
dispatch.lua -- coroutine based dispatcher
This is a first try at a coroutine based non-blocking
dispatcher for LuaSocket. Take a look at 'check-links.lua'
and at 'forward.lua' to see how to use it.
check-links.lua -- HTML link checker program
This little program scans a HTML file and checks for broken
links. It is similar to check-links.pl by Jamie Zawinski,
but uses all facilities of the LuaSocket library and the Lua
language. It has not been thoroughly tested, but it should
work. Just run
lua check-links.lua [-n] {<url>} > output
and open the result to see a list of broken links. Make sure
you check the '-n' switch. It runs in non-blocking mode,
using coroutines, and is MUCH faster!
forward.lua -- coroutine based forward server
This is a forward server that can accept several connections
and transfers simultaneously using non-blocking I/O and the
coroutine-based dispatcher. You can run, for example
lua forward.lua 8080:proxy.com:3128
to redirect all local conections to port 8080 to the host
'proxy.com' at port 3128.
unix.c and unix.h
This is an implementation of Unix local domain sockets and
demonstrates how to extend LuaSocket with a new type of
transport. It has been tested on Linux and on Mac OS X.
listener.lua -- socket to stdout
talker.lua -- stdin to socket
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listener.lua and talker.lua are about the simplest
applications you can write using LuaSocket. Run
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'lua listener.lua' and 'lua talker.lua'
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on different terminals. Whatever you type on talk.lua will
be printed by listen.lua.
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lpr.lua -- lpr client
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This is a cool program written by David Burgess to print
files using the Line Printer Daemon protocol, widely used in
Unix machines. It uses the lp.lua implementation, in the
samples directory. Just run 'lua lpr.lua <filename>
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queue=<printername>' and the file will print!
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cddb.lua -- CDDB client
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This is the first try on a simple CDDB client. Not really
useful, but one day it might become a module.
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daytimeclnt.lua -- day time client
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Just run the program to retrieve the hour and date in
readable form from any server running an UDP daytime daemon.
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echoclnt.lua -- UDP echo client
echosrvr.lua -- UDP echo server
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These are a UDP echo client/server pair. They work with
other client and servers as well.
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tinyirc.lua -- irc like broadcast server
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This is a simple server that waits simultaneously on two
server sockets for telnet connections. Everything it
receives from the telnet clients is broadcasted to every
other connected client. It tests the select function and
shows how to create a simple server whith LuaSocket. Just
run tinyirc.lua and then open as many telnet connections
as you want to ports 8080 and 8081.
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Good luck,
Diego.