java.lang.Object
net.i2p.router.transport.udp.SSU2Header.Header
Enclosing class:
SSU2Header
public static class SSU2Header.Headerextends Object
A temporary structure returned from trial decrypt, with methods to access the fields.

  • Field Details

    • data

      public final byte[] data
      The raw header bytes.

  • Constructor Details

    • Header

      public Header(int len)
      Create a Header with the given size.
      Parameters:
      len - the number of raw header bytes to allocate, one of the SHORT_HEADER_SIZE, LONG_HEADER_SIZE or SESSION_HEADER_SIZE values

  • Method Details

    • getDestConnID

      public long getDestConnID()
      Available in all header types.
      Returns:
      the destination connection ID, 0 if the header is all zeros

    • getPacketNumber

      public long getPacketNumber()
      Available in all header types.
      Returns:
      the packet number, for an I2P header sent before data phase it may be 0

    • getType

      public int getType()
      Available in all header types.
      Returns:
      the message type byte

    • getShortHeaderFlags

      public int getShortHeaderFlags()
      Short header flags byte, present only in short headers.
      Returns:
      the short header flags byte

    • getVersion

      public int getVersion()
      SSU2 protocol version, present only in long headers.
      Returns:
      the protocol version byte

    • getNetID

      public int getNetID()
      Network ID, present only in long headers.
      Returns:
      the network ID byte

    • getHandshakeHeaderFlags

      public int getHandshakeHeaderFlags()
      Long header flags byte, present only in long headers.
      Returns:
      the long header flags byte

    • getSrcConnID

      public long getSrcConnID()
      Source connection ID, present only in long headers.
      Returns:
      the source connection ID, 0 if absent

    • getToken

      public long getToken()
      Token, present only in long headers.
      Returns:
      the 8-byte token as a long, 0 if absent

    • getEphemeralKey

      public byte[] getEphemeralKey()
      X25519 ephemeral public key, present only in handshake headers.
      Returns:
      a newly allocated copy of the 32-byte ephemeral public key

    • toString

      public String toString()
      String representation of this header.
      Overrides:
      toString in class Object