res_pjsip_transport_websocket: Don't assert on 0 length payloads

If an external pjproject is used and built with assertions enabled, we
will assert if passed a payload length of 0, so treat empty frames as if
we didn't receive them.

Change-Id: I9c5fdccd89cc8d2f3ed7e3ee405ef0fc78178f48

diff --git a/res/res_pjsip_transport_websocket.c b/res/res_pjsip_transport_websocket.c
index 2cbff335f0f39677934f07ca9dec0eb4798b9e5a..624919687ef0ccabf242c3ce6d3d2626bb2ccc26 100644 (file)
--- a/res/res_pjsip_transport_websocket.c
+++ b/res/res_pjsip_transport_websocket.c
@@ -396,7 +396,9 @@ static void websocket_cb(struct ast_websocket *session, struct ast_variable *par
                }
 
                if (opcode == AST_WEBSOCKET_OPCODE_TEXT || opcode == AST_WEBSOCKET_OPCODE_BINARY) {
-                       ast_sip_push_task_wait_serializer(serializer, transport_read, &read_data);
+                       if (read_data.payload_len) {
+                               ast_sip_push_task_wait_serializer(serializer, transport_read, &read_data);
+                       }
                } else if (opcode == AST_WEBSOCKET_OPCODE_CLOSE) {
                        break;
                }