Joachim Lindenberg via Postfix-users:
> >Is there a technical spec of that protocol? Does it look in any
> way like HaProxy protocol version 1 or 2? What are the source IP
> address and port?
> https://nginx.org/en/docs/stream/ngx_stream_proxy_module.html#:~:text=Enables%20the%20PROXY%20protocol
> links to the expected suspect (HaProxy)... IIRC last time I tested
> only v1 was supported. I.e. yes, HaProxy v1, but this may have
> changed. As source I am passing external addresses (ipv4 in ipv6
> style or true ipv6, always matching the target/server address
> family in same format) of one of my VPS, and nginx chooses a dynamic
> source port.
This means that nginx ignores the source port in the proxy protocol.
Is that documented somewhere?
Does nginx also ignore the source IP address in the proxy protocol?
Is that documented somewhere?
How does the client find out that a destination server is down?
Is that documented somewhere?
This case is very different from the inbound case where the backends
are monitored for availability. One cannot do monitor the whole
Internet that way.
Wietse
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