Protocol Violation in Quant

[QUICTester]

Hi,

During our tests involving a Quant (511d91c) implementation, we identified a protocol violation on the Quiche server implementation.

Bug detail:
The server does not discard an Initial packet if it's carried in a UDP datagram with a payload size smaller than the minimum allowed maximum datagram size of 1200 bytes (Section 14.1, RFC 9000).

This requirement ensures that the network path supports a reasonable Path Maximum Transmission Unit (PMTU) in both directions, as QUIC MUST NOT be employed if the network path cannot handle a maximum datagram size of at least 1200 bytes.

[larseggert]

Thanks for the report. It's very likely that you identified a bug. Quant isn't under active maintenance anymore, since it was meant as a proof-of-concept to validate the evolving QUIC spec during its standardization. So it's unlikely I'll fix this.

Also, who are you? Your profile does not have any contact information.