Struct r_extcap::interface::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 used in the ExtcapApplication. 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 copy 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.