Package com.silabs.na.pcap.impl

Class PcapInputNio

  • All Implemented Interfaces:
    IPcapInput, java.io.Closeable, java.lang.AutoCloseable
    public class PcapInputNio
extends java.lang.Object
implements IPcapInput
    The PCAP implementation variant. https://wiki.wireshark.org/Development/LibpcapFileFormat

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int MAGIC  
      static int NANOSEC_MAGIC  

    • Constructor Summary

      Constructors 
      Constructor Description
      PcapInputNio​(java.nio.channels.ReadableByteChannel rbc, boolean isBigEndian, boolean isNanosec)
      Starts the pcap stream, with the is rolled up at 4 bytes into it.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Closes the streams.
      int network()
      Returns the network ID.
      Block nextBlock()
      Returns next packet block, or null when at the end of the file.
      int snapLen()
      SNAP len, defining max length of the packet.
      java.lang.String type()
      Returns type of the file.
      java.lang.String version()
      Returns version string of this PCAP file.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • PcapInputNio

        public PcapInputNio​(java.nio.channels.ReadableByteChannel rbc,
                    boolean isBigEndian,
                    boolean isNanosec)
             throws java.io.IOException
        Starts the pcap stream, with the is rolled up at 4 bytes into it.
        Parameters:
        rbc - Byte channel that contains data.
        isBigEndian - Specifies the endianess of the file.
        isNanosec - Specify if timestamps are micro- or nano-seconds.
        Throws:
        java.io.IOException - if anything goes wrong with the IO operations.

    • Method Detail

      • version

        public java.lang.String version()
        Returns version string of this PCAP file.
        Returns:
        String, represeting the version.

      • network

        public int network()
        Returns the network ID.
        Returns:
        int, representing network.

      • snapLen

        public int snapLen()
        SNAP len, defining max length of the packet.
        Returns:
        value of SNAP len

      • nextBlock

        public Block nextBlock()
                throws java.io.IOException
        Returns next packet block, or null when at the end of the file.
        Specified by:
        nextBlock in interface IPcapInput
        Returns:
        next block read from the input.
        Throws:
        java.io.IOException - if anything goes wrong with the underlying IO operations.

      • type

        public java.lang.String type()
        Returns type of the file. In this case, "pcap".
        Specified by:
        type in interface IPcapInput
        Returns:
        "pcap"

      • close

        public void close()
           throws java.io.IOException
        Closes the streams.
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Throws:
        java.io.IOException