Module org.snmp4j
Package org.snmp4j.transport

Interface MessageLengthDecoder

All Known Implementing Classes:
DefaultTcpTransportMapping.SnmpMesssageLengthDecoder
public interface MessageLengthDecoder
The MessageLengthDecoder needs to be implemented for connection oriented transport mappings, because those transport mappings have no message boundaries. To determine the message length, the message header is decoded in a protocol specific way.
Since:
1.7
Version:
1.7
Author:
Frank Fock

  • Method Summary

    Modifier and Type
    Method
    Description
    MessageLength
    getMessageLength(ByteBuffer buf)
    Returns the total message length to read (including header) and the actual header length.
    int
    getMinHeaderLength()
    Returns the minimum length of the header to be decoded.

  • Method Details

    • getMinHeaderLength

      int getMinHeaderLength()
      Returns the minimum length of the header to be decoded. Typically this is a constant value.
      Returns:
      the minimum length in bytes.

    • getMessageLength

      MessageLength getMessageLength(ByteBuffer buf) throws IOException
      Returns the total message length to read (including header) and the actual header length.
      Parameters:
      buf - a ByteBuffer with a minimum of getMinHeaderLength().
      Returns:
      the total message length in bytes and the actual header length in bytes.
      Throws:
      IOException - if the header cannot be decoded.