getByteLength method
Returns the total on-the-wire byte length of the full HTTP/3 frame (type varint + length varint + payload).
Implementation
int getByteLength() {
final payload = serializePayload();
final typeBytes = VarInt.encode(Http3FrameType.origin.value);
final lengthBytes = VarInt.encode(payload.length);
return typeBytes.length + lengthBytes.length + payload.length;
}