Enable gzip compression when api calls

[rnakano]

Issue

• None

Overview (Required)

I think using HTTP with gzip compression is a good way to reduce network traffic.

OkHttp adds Content-Encoding: gzip header automatically. However, to enable gzip in GoogleAppEngine, it must also be included in User-Agent.

Links

• https://cloud.google.com/appengine/docs/standard/go/how-requests-are-handled#response_compression

Screenshot

Before ⬇️

After ⬇️

I confirmed that the traffic of the timetable decreased to 1/3 by the Android Profiler.

[jmatsu-bot]

Your app is deployed! Try it via https://deploygate.com/distributions/e5e47d1b17a3bb5322853fbfe3a87622813c2a07

[panpanini]

However, to enable gzip in GoogleAppEngine, it must also be included in User-Agent.

📝 thats really useful information!! thanks!

[panpanini]

I wonder about iOS as well, is it possible to do something for this in ApiComponent.kt as well?
https://github.com/DroidKaigi/conference-app-2019/blob/master/data/api-impl/src/iosMain/kotlin/io/github/droidkaigi/confsched2019/data/api/ApiComponent.kt#L17

[rnakano]

Of course! I will also modify iOS code.

[rnakano]

I confirmed that the traffic was reduced even on iOS 😃

⬇️ Profiler Screenshot

Before	After

[panpanini]

💯 💯 💯 amazing!

[jmatsu-bot]

Your app is deployed! Try it via https://deploygate.com/distributions/e5e47d1b17a3bb5322853fbfe3a87622813c2a07

[jmatsu-bot]

Apk comparision results

Property	Summary
New File Size	13801063 Bytes. (13.16 MB)
File Size Change	+132 Bytes. (+0.13 KB)
Download Size Change	-1459 Bytes. (-1.42 KB)
New Method Reference Count	153760
Method Reference Count Change	0
New Number of dex file(s)	4
Number of dex file(s) Change	0

Generated by 🚫 Danger

[jmatsu-bot]

Asserted successfully. 💯

Generated by 🚫 Danger