21 		end

    21 		end

    22 	end

    22 	end

    23 

    23 

    24 	for session in pairs(prosody.incoming_s2s) do

    24 	for session in pairs(prosody.incoming_s2s) do

    25 		if session.type ~= "s2sin_unauthed"

    25 		if session.type ~= "s2sin_unauthed"

    26 		and session.to_host == host

    27 		and session.to_host == host

    27 		and (not(keepalive_servers) or keepalive_servers:contains(session.from_host)) then

    28 		and (not(keepalive_servers) or keepalive_servers:contains(session.from_host)) then

    28 			if not s2sout[session.from_host] then ping_hosts[session.from_host] = true; end

    29 			if not s2sout[session.from_host] then ping_hosts[session.from_host] = true; end

    29 			session.sends2s " ";

    30 			session.sends2s " ";

    30 			-- If the connection is dead, this should make it time out.

    31 			-- If the connection is dead, this should make it time out.