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README.md

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To use this script with Wireshark just copy the file coap18.lua into the "plugins" directory of Wireshark (e.g. ~/.wireshark/plugins for Ubuntu). This directory must be created if it does not yet exist. After the next start of Wireshark it is ready to use.

Supported protocol and extension versions:

  • CoAP Protocol (RFC 7252, aka draft 18)
  • CoAP Observe (RFC 7641)
  • CoAP Blockwise Transfer (draft 18)

Type "coap18" in the filter field of Wireshark to filter all CoAP messages using this script. However, you can use "coap18.*" as prefix for a huge number of other (more advanced) filters, e.g.

  • coap18.msgid == 123 for all messages with message ID 123, or
  • coap18.options.uripath == "test" for all messages that contain an URI-Path option with value "test".

Note: This script needs LUA 5.2 (which for sure is available in Wireshark 1.10.5)