Problem recording mobile app - gzipped JSON payload doesn't unzip

[Alexander Boitsev]

Hello,

I have noticed an unexpected behavior when recording a mobile 
application traffic in JMeter. I have confirmed it in almost all 
versions - starting from 2.13 to the latest trunk code.

I am recording traffic from a mobile app (iOS in my case) and in POST 
requests (JSON) I see some unreadable data which is confirmed to be a 
not unzipped payload.

I have tried recording with Charles Proxy and it shows JSON properly. So 
it is JMeter who processes something incorrectly in my case.

Any ideas why this might happen? Never had such problems with mobile 
apps before.

Thank you,
Alexander