LavinMQ::ProxyProtocol
https://raw.githubusercontent.com/haproxy/haproxy/master/doc/proxy-protocol.txt
Constants
HANDSHAKE_TIMEOUT = 15.seconds
Bound how long a pre-auth connection may keep the accept fiber (and its FD) parked while we wait for the first bytes. Without this the initial peek blocks forever on a peer that completes the handshake but sends nothing.