Add a resolver flush method

The flush method sends any pending resolving requests. A resolver can
queue requests to some pending list when e.g. it knows ConnMan is offline.

3 files changed, 26 insertions, 0 deletions

diff --git a/include/resolver.h b/include/resolver.h
index 3b274c9f..ae77039e 100644
--- a/include/resolver.h
+++ b/include/resolver.h
@@ -41,6 +41,8 @@ int connman_resolver_remove_all(const char *interface);
 int connman_resolver_append_public_server(const char *server);
 int connman_resolver_remove_public_server(const char *server);
 
+void connman_resolver_flush(void);
+
 #define CONNMAN_RESOLVER_PRIORITY_LOW      -100
 #define CONNMAN_RESOLVER_PRIORITY_DEFAULT     0
 #define CONNMAN_RESOLVER_PRIORITY_HIGH      100
@@ -52,6 +54,7 @@ struct connman_resolver {
 							const char *server);
 	int (*remove) (const char *interface, const char *domain,
 							const char *server);
+	void (*flush) (void);
 };
 
 int connman_resolver_register(struct connman_resolver *resolver);
diff --git a/src/resolver.c b/src/resolver.c
index 5caf7a85..f3faacdf 100644
--- a/src/resolver.c
+++ b/src/resolver.c
@@ -291,6 +291,27 @@ int connman_resolver_remove_public_server(const char *server)
 	return connman_resolver_remove(NULL, NULL, server);
 }
 
+/**
+ * connman_resolver_flush:
+ *
+ * Flush pending resolver requests
+ */
+void connman_resolver_flush(void)
+{
+	GSList *list;
+
+	for (list = resolver_list; list; list = list->next) {
+		struct connman_resolver *resolver = list->data;
+
+		if (resolver->flush == NULL)
+			continue;
+
+		resolver->flush();
+	}
+
+	return;
+}
+
 static int selftest_append(const char *interface, const char *domain,
 							const char *server)
 {
diff --git a/src/service.c b/src/service.c
index d1309587..038d1a08 100644
--- a/src/service.c
+++ b/src/service.c
@@ -340,6 +340,8 @@ static void update_nameservers(struct connman_service *service)
 						service->nameservers[i]);
 	} else if (service->nameserver != NULL)
 		connman_resolver_append(ifname, NULL, service->nameserver);
+
+	connman_resolver_flush();
 }
 
 void __connman_service_append_nameserver(struct connman_service *service,