Create my first Server Web application
lazarus / 38-Networking and Web Programming

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Saylo_49 · 2020-05-07 18:24

Hello,

I want to start developping a Web server application, but I have no
clue where and how to start.

What I am looking for is to create an app to be hosted on shared web
hosting servers (powered by Linux, and Apache or Nginx server).

This server app will be running 24/7, and it will do two tasks :

Receive data from client apps installed anywhere (mobile or desktop,
created in Pascal or other languages).
This data are juste strings (OS version, current time, etc.) sent on
FormCreateAnd, send messages to the client apps, this messages can be
parsed by the client apps as notifications or something else
This server app will not use any SQL database (MySql and else). But it
must store data in a specified scheme in text files on the Web Host.

The user (me) can access this server app in the browser or by REST API
to :

Read the received data (for analytical purpose).Retrieve the archived
dataTo write and send messages to client apps
Please is there a specifique way to achieve this ?
Please tell which tutorial, which packages and which component to use.

___________________________________
P.S :
I know, there is commercial and free business-grade solutions and
services that can do this, but they do not support programming desktop
apps nor mobile apps developped in pascal.
They only provide Java, Kotlin and Swift plugins and code snippets.
And neither pascal-specifique tutorial about how to use them (in
Delphi or Lazarus) actually worked nor those tutorials writers
answered my support demands or bug reports.

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egsuh · 2020-05-08 07:05

You can write both web-server and web client in FPC. For server, you
may use fpweb, and for client, "synapse" allows you to communicate
with webservers within Lazarus application (in my case, Windows
application).  And many other ways.

You can find (all? most? ) related contents at :

 https://wiki.freepascal.org/Portal:Web_Development

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devEric69 · 2020-05-08 08:56

Hello,

You can also study the examples in the directory
...fpc\x.x.x\source\packages\fcl-web\examples, of your Lazarus
installation (how to manage session-id cookie with Object Pascal, how
to serialize HTML with  fpWeb  framework's template engine, etc).

And here are interesting discussion posts (according to the research
skills of everyone in the forum):
· https://forum.lazarus.freepascal.org/index.php/topic,10814.msg54008.
html#msg54008
· https://forum.lazarus.freepascal.org/index.php/topic,6377.msg29972.h
tml#msg29972
· https://forum.lazarus.freepascal.org/index.php/topic,6361.msg29875.h
tml#msg29875
· https://forum.lazarus.freepascal.org/index.php/topic,12757.msg66546.
html#msg66546
...

Regards