udppacketconn

Overview ¶

Package main sketches a net.PacketConn wrapper for the PROXY protocol over UDP.

The library deliberately ships only ParseUDPDatagram and Header.FormatUDPDatagram. A full wrapper has to answer a question the spec does not: ReadFrom reports the client address carried by the header, but replies must travel to the proxy that relayed the datagram, so WriteTo needs a client→proxy flow table — and its bounds, expiry, and spoofing exposure are application policy. This example shows the shape of such a wrapper with the simplest possible policy, so you can adapt it rather than import an opinion.