Compression during replication(sync)

Mobile Sync Gateway
1

My understanding is that we can set compressResponses to true(default) to enable GZip compression of HTTP responses for the sync contents. My questions are these:

  1. Is this available for both iOS and Android implementations with Sync GW 1.1?
  2. Does this compress both the push and pull replication contents?

Thx

2

YES

YES

DELTA SYNC
In CBL 2.5 and SG 2.5 there is now Delta Sync on the EE version. Delta Compression/Sync send only the changes in the document not the whole document like before.
Docs on Delta Sync: Legacy Pre-3.0 Configuration | Couchbase Docs