adding in sample code

broadcaster/main.cpp

@@ -0,0 +1,51 @@
+#include <cstring>
+#include <dns_sd.h>
+#include <iostream>
+
+void register_service_callback(DNSServiceRef service, DNSServiceFlags flags,
+                               DNSServiceErrorType errorCode, const char *name,
+                               const char *regtype, const char *domain,
+                               void *context) {
+  if (errorCode == kDNSServiceErr_NoError) {
+    std::cout << "Service registered successfully!" << std::endl;
+    std::cout << "Service Name: " << name << std::endl;
+    std::cout << "Service Type: " << regtype << std::endl;
+    std::cout << "Domain: " << domain << std::endl;
+  } else {
+    std::cerr << "Error registering service: " << errorCode << std::endl;
+  }
+}
+
+int main() {
+  DNSServiceRef serviceRef;
+
+  // Register a service with Bonjour
+  const char *serviceName = "My HTTP Service";
+  const char *serviceType = "_flowy._tcp";
+  uint16_t servicePort = 8080;
+
+  // Register the service
+  DNSServiceErrorType err = DNSServiceRegister(
+      &serviceRef, 0, 0, serviceName, serviceType, nullptr, nullptr,
+      htons(servicePort), 0, nullptr, register_service_callback, nullptr);
+  if (err != kDNSServiceErr_NoError) {
+    std::cerr << "Error registering service: " << err << std::endl;
+    return 1;
+  }
+
+  // Run the Bonjour service (advertise the service)
+  std::cout << "Advertising service: " << serviceName << " on port "
+            << servicePort << std::endl;
+
+  // Now keep the event loop running properly to process mDNS queries
+  // This will block here while the service is being advertised
+  while (true) {
+    // Processing the events - this is the blocking call
+    DNSServiceProcessResult(serviceRef);
+  }
+
+  // Cleanup when done (this line will never be reached in this version)
+  DNSServiceRefDeallocate(serviceRef);
+
+  return 0;
+}