A UDP client for sending "QUIC PING"s.
A QUIC Initial packet with random payload and the version 0xbabababa to force Version Negotiation.
The QUIC PING packet satifies the minimum Initial datagram size (as specified in RFC 9000), i.e. the unencrypted QUIC packet (header + payload) has a size of exactly 1200 bytes.
go mod init quicping
go get golang.org/x/crypto/hkdf
go build .
./quicping google.com:443 [--hexdump]
The option --hexdump saves the generated QUIC packet as hexdump to packet.txt.