Assume publish response as ping response

[cosmo0920]

Fixes #127 This option should be needed due to high frequently traffic environment.

When flood of messages are reached in this client, keep_alive! response may not reached until response timeout and causes MQTT::ProtocolException with "No Ping Response received for xxx seconds".

Signed-off-by: Hiroshi Hatake [email protected]

[phlegx]

Cool! Exactly my case. Thx!