SSU2Header.Scratch | Javadocs [I2P+]

net.i2p.router.transport.udp.SSU2Header.Scratch

private static final class SSU2Header.Scratchextends Object

Thread-scoped scratch for the trial decrypts, which run 3-6 times per inbound datagram on the UDP handle threads.

Safe because a trial-decrypted Header never escapes the calling method: SSU2Header.acceptTrialDecrypt(UDPPacket, Header) copies the bytes into the packet, and no caller stores the Header. One scratch per header size, because SSU2Header.Header.toString() and SSU2Header.Header.getEphemeralKey() infer the header type from the array length, and because PacketHandler may hold a handshake header while falling back to a long-header decrypt of the same packet.

Field Summary
Fields
Modifier and Type
Field
Description
(package private) final SSU2Header.Header
longHdr
Reusable buffer for a long header.
(package private) final SSU2Header.Header
session
Reusable buffer for a session request header.
(package private) final SSU2Header.Header
shortHdr
Reusable buffer for a short header.
(package private) final byte[]
xor
Reused by SSU2Header.decryptDestConnID(DatagramPacket, byte[]), decryptShortHeader(), encryptShortHeader().
Constructor Summary
Constructors
Modifier
Constructor
Description
private
Scratch()
Per-thread scratch headers and xor buffer for header protection.
Method Summary
Methods inherited from class Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- session
  final SSU2Header.Header session
  Reusable buffer for a session request header.
- longHdr
  final SSU2Header.Header longHdr
  Reusable buffer for a long header.
- shortHdr
  final SSU2Header.Header shortHdr
  Reusable buffer for a short header.
- xor
  final byte[] xor
  Reused by SSU2Header.decryptDestConnID(DatagramPacket, byte[]), decryptShortHeader(), encryptShortHeader().
Constructor Details
- Scratch
  private Scratch()
  Per-thread scratch headers and xor buffer for header protection.

Field Summary