[sean0407]

Summary

Config.createCopy() serializes and unmarshals configuration through JAXB:

Config.createCopy()
  -> ConfigIO.write()
  -> JAXB unmarshal
  -> PreferredAddress no-arg constructor + InetAddress byte adapter

JAXB could not instantiate PreferredAddress, and its InetAddress properties were not JAXB-compatible. The change adds a no-argument constructor and maps both addresses to their raw bytes for the configuration round trip.

Changed files:

• TLS-Core/src/main/java/de/rub/nds/tlsattacker/core/protocol/message/extension/quic/QuicTransportParametersExtensionMessage.java
• TLS-Core/src/test/java/de/rub/nds/tlsattacker/core/config/PreferredAddressConfigCopyTest.java

Fixes #252.

Evidence

• Before: the focused Config.createCopy() reproduction failed with NoSuchMethodException for PreferredAddress.<init>().
• After: mvn -o -B -pl TLS-Core -am '-Dtest=PreferredAddressConfigCopyTest,QuicTransportParameterTest' -Dsurefire.failIfNoSpecifiedTests=false test passed (3 tests).

Merge Danger

Door: Two-way

Blast Radius: Low

This changes JAXB mapping for QUIC preferred-address IPv4/IPv6 values in configuration copies. The adapter preserves each address as raw address bytes.