Implement gzip content encoding

[clue]

No description provided.

[WyriHaximus]

👍 , fully agree on adding this. My main concern is how to do it non-blocking. A child process could be an option unless you know a good way to do it streaming chunk by chunk in future ticks.

[clue]

Gzip encoding/decoding should in fact not actually be part of this library. It should be added as a dependency here.

I suppose it makes sense to build this on top of PHP's ZLib functions. I've started looking into building a streaming gzip encoder/decoder a while ago but have never been quite happy with its API.

Can't promise anything, but I'll try to look into this 👍

[WyriHaximus]

It should not be part of this library at all but we need to find a way to make it non-blocking so we can use it within this library. A streaming encoder/decoder sounds great and that is something we could use in react/http as well.

[clue]

make it non-blocking

IMO this is a non-issue for two reasons:

• zlib can easily decompress 100+ MByte/s on even a moderate system
• React PHP's Stream implementation uses usual chunk sizes of 4 KiB each

This means that using a blocking decompressing algorithm for individual chunks can be considered non-blocking for the purpose of this library :-)

(Obviously, this doesn't apply if you're decompressing a multi-megabyte string variable – which does not apply to this library)

[clue]

Can't promise anything, but I'll try to look into this 👍

Just for the reference, I've started looking into the available implementation approaches a few weeks ago: clue/reactphp-zlib#1

Using PHP's zlib stream filters works okay-ish. I'm currently working around some of its limitations:
clue/reactphp-zlib#3 (comment)

[clue]

For the reference again, I've pushed an initial v0.1.0 release of clue/zlib-react a few days ago. This can now be integrated here to offer HTTP compression support (gzip and/or deflate).

I hear @WyriHaximus is working on this? 👍

[WyriHaximus]

Not just working on it, I have a working prototype getting molded into a PR :)

[ghost]

@WyriHaximus What is the status of your prototype?

[WyriHaximus]

@CharlotteDunois about 3 and a half years old now so no clue. Feel free to build something because it has been ages

[clue]

I have to close this one as per #152 now that future development will focus on https://github.com/reactphp/http instead.

I've migrated this ticket to reactphp/http#377.