sdp_client: iterate over registered SDP query callbacks

CHANGELOG.md

@@ -48,6 +48,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - GAP: return command disallowed if disconnect already requested
 - GAP: improve handling of incorrectly resolved addresses in HCI_SUBEVENT_LE_CONNECTION_COMPLETE
 - GAP: only store link key if at least one side requests bonding during the IO Capabilities exchange.
+- SDP Client: trigger next SDP query callback, if registered callback does not start SDP query
 - GOEP Client: remove goep_client_create_connection. Use goep_client_connect instead.
 - HID Parser: cleanup of function names and signatures
 - HIDS Client: use error code instead of att status in conencted event

src/classic/sdp_client.c

@@ -348,14 +348,14 @@ void sdp_parser_handle_service_search(uint8_t * data, uint16_t total_count, uint
 #endif
 
 static void sdp_client_notify_callbacks(void){
-    if (sdp_client_ready() == false) {
-        return;
+    while (sdp_client_ready()) {
+        btstack_context_callback_registration_t *callback = (btstack_context_callback_registration_t *) btstack_linked_list_pop(&sdp_client_query_requests);
+        if (callback != NULL) {
+            (*callback->callback)(callback->context);
+        } else {
+            return;
+        }
     }
-    btstack_context_callback_registration_t * callback = (btstack_context_callback_registration_t*) btstack_linked_list_pop(&sdp_client_query_requests);
-    if (callback == NULL) {
-        return;
-    }
-    (*callback->callback)(callback->context);
 }
 
 void sdp_parser_handle_done(uint8_t status){