Merge pull request #13543 from rabbitmq/mergify/bp/v4.1.x/pr-13542

Increase initial AMQP 0-9-1 connection frame size limit (backport #13542)

Author: michaelklishin

deps/rabbit_common/include/rabbit_framing.hrl

@@ -11,7 +11,7 @@
 -define(FRAME_HEADER, 2).
 -define(FRAME_BODY, 3).
 -define(FRAME_HEARTBEAT, 8).
--define(FRAME_MIN_SIZE, 4096).
+-define(FRAME_MIN_SIZE, 8192).
 -define(FRAME_END, 206).
 -define(REPLY_SUCCESS, 200).
 -define(CONTENT_TOO_LARGE, 311).