[Lazarus] How to handle webservice gzip streams

[Zbyněk Fiala]

Hello,

I used this unit in my project.

unit zuncomprfp;

	
	

	
	{ uncompr.c -- decompress a memory buffer

	
	Copyright (C) 1995-1998 Jean-loup Gailly.

	
	

	
	Pascal tranlastion

	
	Copyright (C) 1998 by Jacques Nomssi Nzali

	
	For conditions of distribution and use, see copyright notice in readme.txt

	
	}

source:
https://github.com/zbyna/Media-Stub-Kodi-Creator/blob/master/zuncomprfp.pas
     
            Zbyna
Dne 24.9.2019 v 18:50 detlef oertel via lazarus napsal(a):
> Hello,
>
> I have to 'speak' with a web service that only handles gzip compression.
> The zstream TCompressionStream only does deflate.
> Any hints according to zlib derivates to use windowbits = 15+16
> do not work with zstream or paszlib because this part of zlib is not implemented here.
> It seems that there is a solution with indy using the http component and TIdCompressorZLib as compressor.
> But I just switched from Indy to synapse because indy has no openssl 1.1 support, which is needed to support
> actual Linux distributions.
>
> The only ways I see at the moment seems to be ugly:
> Using the external zlib runtime libraries or
> creating for every request a temporary file in order to use the zstream Tgzfilestream.
>
> Is there no gzip stream library for lazarus ?
>
> detlef oertel
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