I have a question about the v2 protocol spec.
- \x0 : LOCAL : the connection was established on purpose by the proxy
without being relayed. The connection endpoints are the sender and the
receiver. Such connections exist when the proxy sends health-checks to the
server. The receiver must accept this connection as valid and must use the
real connection endpoints and discard the protocol block including the
family which is ignored.
Real connection == the endpoints of the TCP connection from proxy to Postfix?
- 0x0 : AF_UNSPEC : the connection is forwarded for an unknown, unspecified
or unsupported protocol. The sender should use this family when sending
LOCAL commands or when dealing with unsupported protocol families. The
receiver is free to accept the connection anyway and use the real endpoint
addresses or to reject it. The receiver should ignore address information.
What does 'reject' mean in this context? If it means closing the
connection, what is the point of rejecting a connection that was
made for the purpose of a health check?
Wietse
