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64 lines
1.4 KiB
ReStructuredText
64 lines
1.4 KiB
ReStructuredText
WebSocket Keywords
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==================
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websocket.payload
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-----------------
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A sticky buffer on the unmasked payload,
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limited by suricata.yaml config value ``websocket.max-payload-size``.
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Examples::
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websocket.payload; pcre:"/^123[0-9]*/";
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websocket.payload content:"swordfish";
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``websocket.payload`` is a 'sticky buffer' and can be used as ``fast_pattern``.
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websocket.flags
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---------------
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Matches on the websocket flags.
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It uses a 8-bit unsigned integer as value.
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Only the four upper bits are used.
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The value can also be a list of strings (comma-separated),
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where each string is the name of a specific bit like `fin` and `comp`,
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and can be prefixed by `!` for negation.
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websocket.flags uses an :ref:`unsigned 8-bits integer <rules-integer-keywords>`
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Examples::
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websocket.flags:128;
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websocket.flags:&0x40=0x40;
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websocket.flags:fin,!comp;
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websocket.mask
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--------------
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Matches on the websocket mask if any.
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It uses a 32-bit unsigned integer as value (big-endian).
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websocket.mask uses an :ref:`unsigned 32-bits integer <rules-integer-keywords>`
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Examples::
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websocket.mask:123456;
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websocket.mask:>0;
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websocket.opcode
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----------------
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Matches on the websocket opcode.
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It uses a 8-bit unsigned integer as value.
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Only 16 values are relevant.
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It can also be specified by text from the enumeration
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websocket.opcode uses an :ref:`unsigned 8-bits integer <rules-integer-keywords>`
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Examples::
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websocket.opcode:1;
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websocket.opcode:>8;
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websocket.opcode:ping;
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