^{Originally posted by marsom August 7, 2023}
Hi,

ok I'm probably wrong, I expected the from following curl:

curl --ipv4 --haproxy-clientip 192.168.1.2 http://localhost:8080

to set the client ip in the proxy protocol header to 192.168.1.2. in the proxy protocol naming for me its the source ip not the destination.

but

sets the destination address.

when i read ie.

• https://developers.cloudflare.com/spectrum/how-to/enable-proxy-protocol/#the-proxy-protocol-v1-header
• https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/enable-proxy-protocol.html
• https://community.f5.com/t5/codeshare/proxy-protocol-initiator/ta-p/280541

i think the client ip = source ip

if I dump the payload from the command obove i get

PROXY TCP4 127.0.0.1 192.168.1.2 62190 8080
GET / HTTP/1.1
Host: localhost:8080
User-Agent: curl/8.2.1
Accept: */*
...