Package io.github.mahmoudimus.quic.packet

Class UnsupportedVersionException

java.lang.Object

java.lang.Throwable

java.lang.Exception

io.github.mahmoudimus.quic.packet.PacketDecodeException

io.github.mahmoudimus.quic.packet.UnsupportedVersionException

All Implemented Interfaces:

Serializable

public final class UnsupportedVersionException
extends PacketDecodeException

A long header packet of a version this endpoint does not speak. A server answers it with a Version Negotiation packet (versionNegotiation(int...)) when the datagram is at least 1200 bytes (RFC 9000 section 6.1). The connection IDs follow the version-independent invariants (RFC 8999), so they may be up to 255 bytes long.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
UnsupportedVersionException(int version, byte[] destinationId, byte[] sourceId)	An unsupported version.

Method Summary

Modifier and Type	Method	Description
byte[]	destinationId()	The packet's Destination Connection ID.
byte[]	sourceId()	The packet's Source Connection ID.
int	version()	The version number in the packet.
byte[]	versionNegotiation(int... supportedVersions)	The Version Negotiation packet that answers this packet: the connection IDs swapped and the supported versions listed (RFC 9000 section 17.2.1).

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

UnsupportedVersionException

public UnsupportedVersionException(int version,
 byte[] destinationId,
 byte[] sourceId)

An unsupported version.

Parameters:

version - the version number in the packet

destinationId - the packet's Destination Connection ID

sourceId - the packet's Source Connection ID

Method Details

version

public int version()

The version number in the packet.

Returns:

the 32-bit version

destinationId

public byte[] destinationId()

The packet's Destination Connection ID.

Returns:

a copy of its 0 to 255 bytes

sourceId

public byte[] sourceId()

The packet's Source Connection ID.

Returns:

a copy of its 0 to 255 bytes

versionNegotiation

public byte[] versionNegotiation(int... supportedVersions)

The Version Negotiation packet that answers this packet: the connection IDs swapped and the supported versions listed (RFC 9000 section 17.2.1).

Parameters:

supportedVersions - the version numbers to offer, often with a reserved one added

Returns:

the packet bytes