browser.swift

browser.swift

import Foundation

print("Scanning for chromecasts")

class BrowserDelegate : NSObject, NetServiceBrowserDelegate {
    
    var chromeCasts: [NetService] = []
    
    func netServiceBrowser(_ browser: NetServiceBrowser, didFind service: NetService, moreComing: Bool) {
        let existingChromeCast = chromeCasts.filter({ $0.name == service.name })
     
        if existingChromeCast.isEmpty {
            chromeCasts.append(service)
        }
    }

    func netServiceBrowser(_ browser: NetServiceBrowser, didRemove service: NetService, moreComing: Bool) {
        chromeCasts = chromeCasts.filter({ $0.name != service.name })
    }
}

let browser = NetServiceBrowser()

let browserDelegate = BrowserDelegate()

browser.delegate = browserDelegate

browser.searchForServices(ofType: "_googlecast._tcp.", inDomain: "")

RunLoop.current.run(until: Date(timeIntervalSinceNow: 10.0))

print("Found \(browserDelegate.chromeCasts.count) ChromeCasts.")

for cc in browserDelegate.chromeCasts {
    print(
        """

        ---
        
        Name: \(cc.name)
        Type: \(cc.type)
        Domain: \(cc.domain)
        Addresses: \(cc.addresses!.map({ String(data: $0, encoding: .utf8) ?? "Couldn't decode Data" }).joined(separator: ", ")). Data length: \(cc.addresses!.count)
        txtRecordData: \(String(data: cc.txtRecordData()!, encoding: .utf8)!)
        """
    )
}

output.sh

CastIron:master* λ /Users/luke/Library/Developer/Xcode/DerivedData/browse-test-cjdvjeiqrmdmlkaxatplggloinpz/Build/Products/Debug/browse-test
Scanning for chromecasts
Found 1 ChromeCasts.

---

Name: Chromecast-Ultra-0a473f3e7745be6bbf3ad9710e7f9031
Type: _googlecast._tcp.
Domain: local.
Addresses: . Data length: 0
txtRecordData:
CastIron:master* λ