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reset

Reset position of PCAP file reader to first protocol packet of PCAP file

Since R2021b

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    Syntax

    reset(pcap)

    Description

    reset(pcap) resets the position of the specified PCAP file reader to the first protocol packet in the PCAP file.

    example

    Examples

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    Open Live Script

    Create a PCAP file reader object, specifying the name of a PCAP file.

    pcapReaderObj = pcapReader('ethernetSamplePackets.pcap');

    Create a filter for the eCPRI packets, specifying the message type as a bit sequence.

    filterString = 'ecpri.MessageType == BitSequence';

    Read the first eCPRI packet that matches the specified filter to the MATLAB® workspace.

    ecpriFilteredFirstPacket = read(pcapReaderObj,filterString)
    ecpriFilteredFirstPacket = struct with fields:
             SNo: 22
       Timestamp: 1.6128e+15
        LinkType: 1
        Protocol: 'eth'
    PacketLength: 64
          Packet: [1x1 struct]
        RawBytes: [1x0 double]

    Reset the position of the PCAP file reader to the first packet of the PCAP file.

    reset(pcapReaderObj);

    Create a new filter for the eCPRI packets, specifying the message type as a bit sequence.

    filterString = 'ecpri.MessageType == IQData';

    Read the eCPRI packets that match the specified filter to the MATLAB workspace.

    ecpriFilteredPackets = readAll(pcapReaderObj,filterString)
    ecpriFilteredPackets = struct with fields:
             SNo: 21
       Timestamp: 1.6128e+15
        LinkType: 1
        Protocol: 'eth'
    PacketLength: 64
          Packet: [1x1 struct]
        RawBytes: [1x0 double]

    Input Arguments

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    PCAP file reader, specified as a pcapReader object.

    References

    [1] “Common Public Radio Interface: eCPRI Interface Specification V1.2 ” Accessed June 22, 2021.

    Version History

    Introduced in R2021b

    See Also

    Objects

    Functions