Module protocol 

Rendering the extcap control protocol.

Wireshark parses these as keyword {key=value}{key=value} lines, one per line, so every interpolated value has to be kept clear of the delimiters. Nothing here does I/O: the whole wire format is a pure function of the tool’s state, which is what makes it testable without a radio or a Wireshark.

Constants

CALL_RADIO

The {call=} of the reloadable radio selector.

DLT_LORATAP

pcap LINKTYPE_LORATAP. The radio frame arrives under a header describing the channel it was heard on, so nothing has to be invented the way the synthetic Ethernet encapsulation does.

INTERFACE

The interface name. Wireshark writes this into its recent file and into the preference keys for the configuration dialog, so it is permanent: changing it silently orphans saved capture setups.

Functions

config

The reply to --extcap-config: the capture-options dialog.

dlts

The reply to --extcap-dlts.

interfaces

The reply to --extcap-interfaces.

radio_value_auto 🔒

The always-present first entry of the radio selector.

radio_values

The reply to --extcap-reload-option=--radio: what a scan just saw.

sanitize 🔒

Strip the delimiters of the extcap grammar out of a value.