wireshark
w0-验证计算得出的UDP校验和与wireshark是否相同。
http://baike.baidu.com/item/Wireshark
Wireshark（前称Ethereal）是一个网络封包分析软件。网络封包分析软件的功能是撷取网络封包，并尽可能显示出最为详细的网络封包资料。Wireshark使用WinPCAP作为接口，直接与网卡进行数据报文交换。
网络封包分析软件的功能可想像成 "电工技师使用电表来量测电流、电压、电阻" 的工作 - 只是将场景移植到网络上，并将电线替换成网络线。在过去，网络封包分析软件是非常昂贵的，或是专门属于盈利用的软件。Ethereal的出现改变了这一切。在GNUGPL通用许可证的保障范围底下，使用者可以以免费的代价取得软件与其源代码，并拥有针对其源代码修改及客制化的权利。Ethereal是目前全世界最广泛的网络封包分析软件之一。
Wireshark · Go Deep.https://www.wireshark.org/
Wireshark has a rich feature set which includes the following:
[*]Deep inspection of hundreds of protocols, with more being added all the time
[*]Live capture and offline analysis
[*]Standard three-pane packet browser
[*]Multi-platform: Runs on Windows, Linux, macOS, Solaris, FreeBSD, NetBSD, and many others
[*]Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility
[*]The most powerful display filters in the industry
[*]Rich VoIP analysis
[*]Read/write many different capture file formats: tcpdump (libpcap), Pcap NG, Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, Network General Sniffer® (compressed and uncompressed), Sniffer® Pro, and NetXray®, Network Instruments Observer, NetScreen snoop, Novell LANalyzer, RADCOM WAN/LAN Analyzer, Shomiti/Finisar Surveyor, Tektronix K12xx, Visual Networks Visual UpTime, WildPackets EtherPeek/TokenPeek/AiroPeek, and many others
[*]Capture files compressed with gzip can be decompressed on the fly
[*]Live data can be read from Ethernet, IEEE 802.11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay, FDDI, and others (depending on your platform)
[*]Decryption support for many protocols, including IPsec, ISAKMP, Kerberos, SNMPv3, SSL/TLS, WEP, and WPA/WPA2
[*]Coloring rules can be applied to the packet list for quick, intuitive analysis
[*]Output can be exported to XML, PostScript®, CSV, or plain text
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