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sample_Loop_ja.md

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org.pcap4j.sample.Loopは パケットをキャプチャーしてダンプするサンプルクラス。 以下はLinuxでeth2からICMPパケットを2つキャプチャーした実行例。

  [root@localhost Desktop]# java -cp pcap4j-core.jar:pcap4j-packetfactory-static.jar:pcap4j-sample.jar:jna-3.5.2.jar:slf4j-api-1.6.4.jar -Dorg.pcap4j.sample.Loop.count=2 org.pcap4j.sample.Loop icmp
  org.pcap4j.sample.Loop.count: 2
  org.pcap4j.sample.Loop.readTimeout: 10
  org.pcap4j.sample.Loop.maxCapLen: 65536


  SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
  SLF4J: Defaulting to no-operation (NOP) logger implementation
  SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
  NIF[0]: eth0
        : description: null
        : address: /192.168.209.128
  NIF[1]: eth1
        : description: null
        : address: /192.168.76.128
  NIF[2]: eth2
        : description: null
        : address: /192.168.2.109
  NIF[3]: any
        : description: Pseudo-device that captures on all interfaces
  NIF[4]: lo
        : description: null
        : address: /127.0.0.1

  Select a device number to capture packets, or enter 'q' to quit > 2
  eth2(null)
  2012-10-05 03:48:51.881454
  [Ethernet Header (14 bytes)]
    Destination address: 00:0c:29:02:65:62
    Source address: 04:7d:7b:4c:2f:0a
    Type: 0x0800(IPv4)
  [IPv4 Header (20 bytes)]
    Version: 4(IPv4)
    IHL: 5 (20 [bytes])
    TOS: [precedence: 0(Routine)] [tos: 0(Default)] [mbz: 0]
    Total length: 60 [bytes]
    Identification: 3340
    Flags: (Reserved, Don't Fragment, More Fragment) = (false, false, false)
    Flagment offset: 0 (0 [bytes])
    TTL: 128
    Protocol: 1(ICMPv4)
    Header checksum: 0xa792
    Source address: /192.168.2.101
    Destination address: /192.168.2.109
  [ICMP Common Header (4 bytes)]
    Type: 8(Echo)
    Code: 0(No Code)
    Checksum: 0x4c53
  [ICMPv4 Echo Header (4 bytes)]
    Identifier: 256
    SequenceNumber: 9
  [data (32 bytes)]
    Hex stream: 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 61 62 63 64 65 66 67 68 69

  2012-10-05 03:48:51.979233
  [Ethernet Header (14 bytes)]
    Destination address: 04:7d:7b:4c:2f:0a
    Source address: 00:0c:29:02:65:62
    Type: 0x0800(IPv4)
  [IPv4 Header (20 bytes)]
    Version: 4(IPv4)
    IHL: 5 (20 [bytes])
    TOS: [precedence: 0(Routine)] [tos: 0(Default)] [mbz: 0]
    Total length: 60 [bytes]
    Identification: 19161
    Flags: (Reserved, Don't Fragment, More Fragment) = (false, false, false)
    Flagment offset: 0 (0 [bytes])
    TTL: 64
    Protocol: 1(ICMPv4)
    Header checksum: 0xa9c5
    Source address: /192.168.2.109
    Destination address: /192.168.2.101
  [ICMP Common Header (4 bytes)]
    Type: 0(Echo Reply)
    Code: 0(No Code)
    Checksum: 0x5453
  [ICMPv4 Echo Reply Header (4 bytes)]
    Identifier: 256
    SequenceNumber: 9
  [data (32 bytes)]
    Hex stream: 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 61 62 63 64 65 66 67 68 69