Crate mdns_sd_discovery 

Access the operating system’s built-in DNS-SD / mDNS stack for service discovery.

This crate provides a cross-platform async API (using Tokio) for browsing DNS-SD services via the native OS facilities:

• macOS: native DNS-SD framework (available since macOS 10.12)
• Windows: native Win32 DNS-SD API (available since Windows 10)
• Linux/FreeBSD: Avahi via D-Bus (no binary dependency on libavahi)

Service registration lives in a separate crate.

Discovery

By default a ServiceBrowser discovers every service type on the network. Filter on DiscoveredService::service_type, or narrow to a single type with ServiceBrowserBuilder::service_type.

use mdns_sd_discovery::{BrowseEvent, ServiceBrowserBuilder};

let mut browser = ServiceBrowserBuilder::new().browse().await?;

while let Some(event) = browser.recv().await {
    match event? {
        BrowseEvent::Found(svc) => {
            println!("+ [{}] {} at {}:{}", svc.service_type, svc.name, svc.host_name, svc.port);
        }
        BrowseEvent::Removed(svc) => println!("- [{}] {}", svc.service_type, svc.name),
    }
}
// Dropping `browser` stops the browse.

Structs

DiscoveredService

A resolved, connectable service instance.

RemovedService

Identity of a service instance that disappeared.

ServiceBrowser

A live handle to an ongoing browse operation.

ServiceBrowserBuilder

Builder for a DNS-SD service browse (discovery) operation.

ServiceResolverBuilder

Builder for a one-shot DNS-SD resolve of a single, already-known service instance.

TxtRecord

A single TXT record key/value entry.

Enums

BrowseEvent

A single change in the set of discovered services.

ServiceBrowseError

Error type for service browse / discovery failures.