+static void discovery_resolve_callback(AvahiSServiceResolver *resolver, AvahiIfIndex interface, AvahiProtocol protocol, AvahiResolverEvent event, const char *name, const char *type, const char *domain, const char *host_name, const AvahiAddress *address, uint16_t port, AvahiStringList *txt, AvahiLookupResultFlags flags, void* userdata)
+{
+ meshlink_handle_t *mesh = userdata;
+
+ // asserts
+ assert(resolver != NULL);
+ assert(mesh != NULL);
+ assert(mesh->avahi_server != NULL);
+
+ /* Called whenever a service has been resolved successfully or timed out */
+ switch(event)
+ {
+ case AVAHI_RESOLVER_FAILURE:
+ {
+ // asserts
+ assert(name != NULL);
+ assert(type != NULL);
+ assert(domain != NULL);
+
+ fprintf(stderr, "(Resolver) Failed to resolve service '%s' of type '%s' in domain '%s': %s\n", name, type, domain, avahi_strerror(avahi_server_errno(mesh->avahi_server)));
+ }
+ break;
+
+ case AVAHI_RESOLVER_FOUND:
+ {
+ // asserts
+ assert(name != NULL);
+ assert(type != NULL);
+ assert(domain != NULL);
+ assert(host_name != NULL);
+ assert(address != NULL);
+ assert(txt != NULL);
+
+ char straddr[AVAHI_ADDRESS_STR_MAX], *strtxt;
+
+ fprintf(stderr, "(Resolver) Service '%s' of type '%s' in domain '%s':\n", name, type, domain);
+
+ avahi_address_snprint(straddr, sizeof(straddr), address);
+ strtxt = avahi_string_list_to_string(txt);
+ fprintf(stderr,
+ "\t%s:%u (%s)\n"
+ "\tTXT=%s\n"
+ "\tcookie is %u\n"
+ "\tis_local: %i\n"
+ "\twide_area: %i\n"
+ "\tmulticast: %i\n"
+ "\tcached: %i\n",
+ host_name, port, straddr,
+ strtxt,
+ avahi_string_list_get_service_cookie(txt),
+ !!(flags & AVAHI_LOOKUP_RESULT_LOCAL),
+ !!(flags & AVAHI_LOOKUP_RESULT_WIDE_AREA),
+ !!(flags & AVAHI_LOOKUP_RESULT_MULTICAST),
+ !!(flags & AVAHI_LOOKUP_RESULT_CACHED));
+ avahi_free(strtxt);
+
+ // retrieve fingerprint
+ AvahiStringList *fgli = avahi_string_list_find(txt, MESHLINK_MDNS_FINGERPRINT_KEY);
+ meshlink_node_t *node = meshlink_get_node(mesh, name);
+
+ fprintf(stderr, "%p, %p, %s, %s\n", fgli, node, avahi_string_list_get_text(fgli), meshlink_get_fingerprint(mesh, node));
+
+ if(node && fgli && strcmp(avahi_string_list_get_text(fgli) + strlen(MESHLINK_MDNS_FINGERPRINT_KEY) + 1, meshlink_get_fingerprint(mesh, node)) == 0 )
+ {
+ fprintf(stderr, "Node %s is part of the mesh network.\n", node->name);
+
+ sockaddr_t naddress;
+ memset(&naddress, 0, sizeof(naddress));
+
+ switch(address->proto)
+ {
+ case AVAHI_PROTO_INET:
+ {
+ naddress.in.sin_family = AF_INET;
+ naddress.in.sin_port = port;
+ naddress.in.sin_addr.s_addr = address->data.ipv4.address;
+ }
+ break;
+
+ case AVAHI_PROTO_INET6:
+ {
+ naddress.in6.sin6_family = AF_INET6;
+ naddress.in6.sin6_port = port;
+ memcpy(naddress.in6.sin6_addr.s6_addr, address->data.ipv6.address, sizeof(naddress.in6.sin6_addr.s6_addr));
+ }
+ break;
+
+ default:
+ naddress.unknown.family = AF_UNKNOWN;
+ break;
+ }
+
+ if(naddress.unknown.family != AF_UNKNOWN)
+ {
+ meshlink_hint_address(mesh, node, (struct sockaddr*)&naddress);
+ }
+ else
+ {
+ fprintf(stderr, "Could not resolve node %s to a known address family type.\n", node->name);
+ }
+ }
+ else
+ {
+ fprintf(stderr, "Node %s is not part of the mesh network.\n", node ? node->name : "n/a");
+ }
+ }
+ break;
+ }
+
+ avahi_s_service_resolver_free(resolver);
+}
+
+static void discovery_browse_callback(AvahiSServiceBrowser *browser, AvahiIfIndex interface, AvahiProtocol protocol, AvahiBrowserEvent event, const char *name, const char *type, const char *domain, AvahiLookupResultFlags flags, void* userdata)