Display Filter Reference: Constrained Application Protocol

Protocol field name: coap

Versions: 1.6.0 to 3.4.4

Back to Display Filter Reference

Field name Description Type Versions
coap.block Block Frame number 3.4.0 to 3.4.4
coap.block.count Block count Unsigned integer, 4 bytes 3.4.0 to 3.4.4
coap.block.error Block defragmentation error Frame number 3.4.0 to 3.4.4
coap.block.multiple_tails Block has multiple tails Boolean 3.4.0 to 3.4.4
coap.block.overlap Block overlap Boolean 3.4.0 to 3.4.4
coap.block.overlap.conflicts Block overlapping with conflicting data Boolean 3.4.0 to 3.4.4
coap.block.reassembled.in Reassembled in Frame number 3.4.0 to 3.4.4
coap.block.reassembled.length Reassembled block length Unsigned integer, 4 bytes 3.4.0 to 3.4.4
coap.block.too_long Block too long Boolean 3.4.0 to 3.4.4
coap.block_length Block Length Unsigned integer, 4 bytes 3.4.0 to 3.4.4
coap.block_payload Block Payload Sequence of bytes 3.4.0 to 3.4.4
coap.blocks Blocks Label 3.4.0 to 3.4.4
coap.code Code Unsigned integer, 1 byte 1.6.0 to 3.4.4
coap.invalid_option_number Invalid Option Number Label 1.12.0 to 3.4.4
coap.invalid_option_range Invalid Option Range Label 1.12.0 to 3.4.4
coap.length Length Unsigned integer, 4 bytes 3.2.0 to 3.4.4
coap.mid Message ID Unsigned integer, 2 bytes 1.12.0 to 3.4.4
coap.ocount Opt Count Unsigned integer, 1 byte 1.10.0 to 1.10.14
coap.opt.accept Accept Character string 1.8.0 to 3.4.4
coap.opt.block_mflag More Flag Unsigned integer, 1 byte 1.6.0 to 3.4.4
coap.opt.block_number Block Number Unsigned integer, 4 bytes 1.6.0 to 3.4.4
coap.opt.block_size Encoded Block Size Unsigned integer, 1 byte 1.6.0 to 3.4.4
coap.opt.ctype Content-type Character string 1.6.0 to 3.4.4
coap.opt.delta Opt Delta Unsigned integer, 1 byte 1.6.0 to 3.4.4
coap.opt.delta_ext Opt Delta extended Unsigned integer, 2 bytes 1.12.0 to 3.4.4
coap.opt.desc Opt Desc Character string 1.10.0 to 3.4.4
coap.opt.end_marker End of options marker Unsigned integer, 1 byte 1.12.0 to 3.4.4
coap.opt.etag Etag Sequence of bytes 1.6.0 to 3.4.4
coap.opt.hop_limit Hop Limit Unsigned integer, 1 byte 3.4.0 to 3.4.4
coap.opt.if_match If-Match Sequence of bytes 1.8.0 to 3.4.4
coap.opt.if_none_match If-None-Match Sequence of bytes 1.8.0 to 1.8.15
coap.opt.jump Opt Jump Unsigned integer, 1 byte 1.10.0 to 1.10.14
coap.opt.length Opt Length Unsigned integer, 1 byte 1.6.0 to 3.4.4
coap.opt.length_ext Opt Length extended Unsigned integer, 2 bytes 1.12.0 to 3.4.4
coap.opt.location Location Character string 1.6.0 to 1.6.16
coap.opt.location_path Location-Path Character string 1.8.0 to 3.4.4
coap.opt.location_query Location-Query Character string 1.8.0 to 3.4.4
coap.opt.max_age Max-age Unsigned integer, 4 bytes 1.6.0 to 3.4.4
coap.opt.name Opt Name Character string 1.10.0 to 3.4.4
coap.opt.object_security_expand Expanded Flag Byte Boolean 2.6.0 to 3.2.12
coap.opt.object_security_kid Key ID Sequence of bytes 2.6.0 to 3.4.4
coap.opt.object_security_kid_context Key ID Context Sequence of bytes 2.6.0 to 3.4.4
coap.opt.object_security_kid_context_len Key ID Context Length Unsigned integer, 1 byte 2.6.0 to 3.4.4
coap.opt.object_security_kid_context_present Key ID Context Present Boolean 2.6.0 to 3.4.4
coap.opt.object_security_kid_present Key ID Present Boolean 3.0.0 to 3.4.4
coap.opt.object_security_non_compressed Non-compressed COSE message Boolean 2.6.0 to 3.2.12
coap.opt.object_security_piv Partial IV Sequence of bytes 2.6.0 to 3.4.4
coap.opt.object_security_piv_len Partial IV Length Unsigned integer, 1 byte 2.6.0 to 3.4.4
coap.opt.object_security_reserved Reserved Boolean 3.4.0 to 3.4.4
coap.opt.object_security_signature Signature Present Boolean 2.6.0 to 3.2.12
coap.opt.observe Observe Unsigned integer, 4 bytes 2.0.0 to 3.4.4
coap.opt.payload_desc Payload Desc Character string 1.10.0 to 2.2.17
coap.opt.proxy_scheme Proxy-Scheme Character string 2.0.0 to 3.4.4
coap.opt.proxy_uri Proxy-Uri Character string 1.8.0 to 3.4.4
coap.opt.size1 Size1 Unsigned integer, 4 bytes 2.0.0 to 3.4.4
coap.opt.subscr_lifetime Lifetime Unsigned integer, 4 bytes 1.6.0 to 1.12.13
coap.opt.token Token Character string 1.6.0 to 1.10.14
coap.opt.unknown Unknown Sequence of bytes 1.10.0 to 3.4.4
coap.opt.uri_auth Uri-Authority Character string 1.6.0 to 1.6.16
coap.opt.uri_host Uri-Host Character string 1.8.0 to 3.4.4
coap.opt.uri_path Uri-Path Character string 1.6.0 to 3.4.4
coap.opt.uri_path_recon Uri-Path Character string 2.4.0 to 3.4.4
coap.opt.uri_port Uri-Port Unsigned integer, 2 bytes 1.8.0 to 3.4.4
coap.opt.uri_query Uri-Query Character string 1.6.0 to 3.4.4
coap.optcount Option Count Unsigned integer, 1 byte 1.6.0 to 1.8.15
coap.option_length_bad Option length bad Label 1.12.0 to 3.4.4
coap.option_object_security_bad Invalid Object-Security Option Format Label 2.6.0 to 3.2.2
coap.option_oscore_bad Invalid OSCORE Option Format Label 3.2.3 to 3.4.4
coap.oscore_kid OSCORE Key ID Sequence of bytes 2.6.0 to 3.4.4
coap.oscore_kid_context OSCORE Key ID Context Sequence of bytes 2.6.0 to 3.4.4
coap.oscore_piv OSCORE Partial IV Sequence of bytes 2.6.0 to 3.4.4
coap.payload Payload Character string 1.12.0 to 3.4.4
coap.payload_desc Payload Desc Character string 2.4.0 to 3.4.4
coap.payload_length Payload Length Unsigned integer, 4 bytes 2.4.0 to 3.4.4
coap.request_first_in Retransmission of request in Frame number 3.2.0 to 3.4.4
coap.response_first_in Retransmission of response in Frame number 3.2.0 to 3.4.4
coap.response_in Response In Frame number 2.2.0 to 3.4.4
coap.response_time Response Time Time offset 2.2.0 to 3.4.4
coap.response_to Request In Frame number 2.2.0 to 3.4.4
coap.retransmitted Retransmitted Label 3.2.0 to 3.4.4
coap.tid Transaction ID Unsigned integer, 2 bytes 1.6.0 to 1.10.14
coap.token Token Sequence of bytes 1.12.0 to 3.4.4
coap.token_len Token Length Unsigned integer, 1 byte 1.12.0 to 3.4.4
coap.type Type Unsigned integer, 1 byte 1.6.0 to 3.4.4
coap.unknown_option_number Unknown Option Number Label 3.2.5 to 3.4.4
coap.version Version Unsigned integer, 1 byte 1.6.0 to 3.4.4
Go Beyond with Riverbed Technology

Riverbed is Wireshark's primary sponsor and provides our funding. They also make great products that fully integrate with Wireshark.

I have a lot of traffic...

ANSWER: SteelCentral™ AppResponse 11
  • • Full stack analysis – from packets to pages
  • • Rich performance metrics & pre-defined insights for fast problem identification/resolution
  • • Modular, flexible solution for deeply-analyzing network & application performance
Learn More