tree b23142364d2403ee5bf6ce5a1aa48b210a764a54
parent bae0181ae03d43997e24c4b48853d0d760e2ecb2
author Piotr Sikora <piotrsikora@google.com> 1502271461 -0700
committer Piotr Sikora <piotrsikora@google.com> 1505857933 +0000

HTTP/2: signal 0-byte HPACK's dynamic table size.

This change lets NGINX talk to clients with SETTINGS_HEADER_TABLE_SIZE
smaller than the default 4KB. Previously, NGINX would ACK the SETTINGS
frame with a small dynamic table size, but it would never send dynamic
table size update, leading to a connection-level COMPRESSION_ERROR.

Also, it allows clients to release 4KB of memory per connection, since
NGINX doesn't use HPACK's dynamic table when encoding headers, however
clients had to maintain it, since NGINX never signaled that it doesn't
use it.

Change-Id: Id4af7b5268ac1335f0df33d5bd78769ca6216155
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
Reviewed-on: https://nginx-review.googlesource.com/3140