Struct Dlt

pub struct Dlt {
    pub data_link_type: DataLink,
    pub name: Cow<'static, str>,
    pub display: Cow<'static, str>,
}

Struct defining the DLT to be used for this extcap. Typically the DLT is defined together with the Interface and passed into InterfacesStep::list_interfaces. But you can also use this class standalone and print out the resulting config using the print_sentence method.

Fields

data_link_type: DataLink

The data link type this packet should be analyzed as.

See: http://www.tcpdump.org/linktypes.html for the list of DLTs.

name: Cow<'static, str>

The name of this DLT. Typically this is the same as the name in http://www.tcpdump.org/linktypes.html without the LINKTYPE_ prefix.

display: Cow<'static, str>

A user-friendly string describing this DLT.

Implementations

impl Dlt

pub fn builder() -> DltBuilder<((), (), ())>

Create a builder for building Dlt. On the builder, call .data_link_type(...), .name(...), .display(...) to set the values of the fields. Finally, call .build() to create the instance of Dlt.

Trait Implementations

impl Clone for Dlt

fn clone(&self) -> Dlt

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Dlt

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PrintSentence for Dlt

Print the configuration line suitable for use with --extcap-dlts.

Example

use r_extcap::config::ExtcapFormatter;
use r_extcap::interface::{DataLink, Dlt};

let dlt = Dlt {
    data_link_type: DataLink::ETHERNET,
    name: "ETHERNET".into(),
    display: "IEEE 802.3 Ethernet".into(),
};
assert_eq!(
    ExtcapFormatter(&dlt).to_string(),
    "dlt {number=1}{name=ETHERNET}{display=IEEE 802.3 Ethernet}\n",
);

fn format_sentence(&self, f: &mut Formatter<'_>) -> Result

The extcap interface expects certain output “sentences” to stdout to communicate with Wireshark, like

fn print_sentence(&self)

Prints the extcap sentence to stdout.