LinuxQuestions.org - Entries for January 2013

Sockets -- A Chat Server with a non-blocking 'select' (i.e., GUI ready)

Posted 01-27-2013 at 06:47 AM by rainbowsally
Updated 08-06-2014 at 07:29 AM by rainbowsally (fix bad edit)

Tags computer mad science, mc2, simple c, sockets

Sockets -- A Chat Server with a non-blocking 'select' (i.e., GUI ready)

[GUI-ready but no GUI in this version. Terminal only.]

Today's feature is

A chat server.
Non blocking 'select' (which we need for importing into an lqMiniTerm).
A web link to more generic sockets code that I wish I had found earlier.
Tarred up example code with makefile for all the code examples at bgnet.

Here's a chat-server you can use to communicate between folks on your computer...

rainbowsally

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lqNetDog Addon For Experimenters

Posted 01-24-2013 at 03:14 PM by rainbowsally
Updated 01-24-2013 at 03:18 PM by rainbowsally

lqNetDog Addon For Experimenters

Today's feature is

An addon for netdog-v1.2 to get and set connection properties.
Setting the blocking timout for the receiver (ans).

Remember, 'ans' (accept) needs to be online to receive the 'orig'inating connection, just like with a phone. Someone has to be there to accept the call or you'll never 'connect'.

We're currently simplifying sockets by combining two or three related functions in a single call using a common...

rainbowsally

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Sockets - The Black Box

Posted 01-23-2013 at 09:44 AM by rainbowsally

Today's feature:

A simple sockets debugging exercise.

Relax. It actually IS simple. You'll see.

You probably wouldn't be reading this if you didn't know how hard it is to find decent, simple example code.

Me too! And so there have been a few missteps in the previous entries (though they are adequate as demos), but it's all starting to shape up.

Yuh know, all I personally needed was a way to communicate between application so I could do stuff...

rainbowsally

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Sockets - lqNetDog and lqMiniTerm (req's libLQ)

Posted 01-23-2013 at 04:17 AM by rainbowsally
Updated 08-06-2014 at 07:36 AM by rainbowsally (bum link, note on sizes)

Tags computer mad science, mc2, qt4, sockets

Sockets - lqNetDog and lqMiniTerm (req's libLQ)

Today's feature is:

lqNetDog and lqMiniTerm running sockets in a Qt gui.
C-style functions, Windows style conversion of slots to C funcs.
I/O in one terminal widget (still very simple).

Here's a screenshot.
http://rainbowsally.org/rainbowsally...ui-800x600.png

Here's a self extractor for the files.

file: ans-orig-gui.sfxz
purpose: utility (executable)...

rainbowsally

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Sockets - The lqNetDog mini-lib for socket connections

Posted 01-22-2013 at 06:40 AM by rainbowsally
Updated 01-22-2013 at 10:52 AM by rainbowsally (moved some includes)

Tags computer mad science, mc2, simple c, sockets

[Bad logic level in netdog_request() presumably fixed. -rs]

Sockets - The NetDog mini-lib for socket connections

Today's feature is:

NetDog. :-)
A simple non-blocking ans (listen) and orig (connect) example.
Minor bundling of socket functions to greatly simplify a successful connection.

Complicating this stuff is easy. Simplifying it is the hard part.

The non-blocking setup here simplifies coding for a gui which needs to constantly be...

rainbowsally

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