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Author Topic: Wouter van Wegen  (Read 4021 times)

pascalbythree

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Wouter van Wegen
« on: May 05, 2015, 12:08:28 pm »
http://www.circuitsonline.net/forum/view/message/1716545#1716545


Does anybody have blocksocket source code to open a socket/lister as a small TCP/IP server on Raspbian Linux?

Is it possible with lNet for lazarus on a Raspberry to open a Server Socket, or is it only possible to work as a client socket?
« Last Edit: May 05, 2015, 10:17:12 pm by pascalbythree »
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Swirl

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Re: Wouter van Wegen
« Reply #1 on: August 11, 2015, 09:05:53 am »
Hallo Wouter,

yes it's (kind of) possible to run lnet components on Raspbian. It's not smart because the debugger certainly makes sense but...
You have to switch off debugging (see: -> tools -> settings -> and set debugger to <none>). Otherwise you get a "sigill" when you run your program in IDE.

Examples for a simple server (tcp/ip) you'll find in the web.
Basic usage is provided here: https://lnet.wordpress.com/usage/usage-guide/
And if you don't mind to read a german PDF look here: http://www.martinjakobs.de/media/Lazarus/Client-Server-Kommunikation-mit-LNET-und-Lazarus-26.11.2010.pdf

Regards,
Swirl
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avra

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Re: Wouter van Wegen
« Reply #2 on: August 11, 2015, 09:56:59 am »
Quote from: pascalbythree on May 05, 2015, 12:08:28 pm
Is it possible with lNet for lazarus on a Raspberry to open a Server Socket, or is it only possible to work as a client socket?
Try tcp server port greater then 1024.
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Thaddy

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Re: Wouter van Wegen
« Reply #3 on: August 11, 2015, 10:13:02 am »
I am using synapse trunk for Raspbian and it works like a charm. Synapse is a blocking sockets library.
I also have examples if you want.
« Last Edit: August 11, 2015, 11:12:07 am by Thaddy »
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Object Pascal programmers should get rid of their "component fetish" especially with the non-visuals.

Thaddy

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Re: Wouter van Wegen
« Reply #4 on: August 11, 2015, 11:14:24 am »
Quote from: avra on August 11, 2015, 09:56:59 am
Quote from: pascalbythree on May 05, 2015, 12:08:28 pm
Is it possible with lNet for lazarus on a Raspberry to open a Server Socket, or is it only possible to work as a client socket?
Try tcp server port greater then 1024.

Not necessary. The Pi can happily be used as a webserver, provided the provider allows you to do that. In NL most do, otherwise use 8080/8081 which is pretty much standard.
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Object Pascal programmers should get rid of their "component fetish" especially with the non-visuals.

marcov

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Re: Wouter van Wegen
« Reply #5 on: August 11, 2015, 11:21:15 am »
I think Avra means that you must be root for sockets below 1024.
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Thaddy

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Re: Wouter van Wegen
« Reply #6 on: August 11, 2015, 11:27:43 am »
Huh? You know what I do for a living, Marco.

But: there have to be sufficient rights. root is not necessary. No proper server runs with root rights.
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Object Pascal programmers should get rid of their "component fetish" especially with the non-visuals.

eny

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Re: Wouter van Wegen
« Reply #7 on: August 11, 2015, 11:47:51 am »
Quote from: pascalbythree on May 05, 2015, 12:08:28 pm
http://www.circuitsonline.net/forum/view/message/1716545#1716545
Ah yes, those friendly teen admins from CO: you can come in with your opinion, but we'll force you to leave with ours...
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