Kick out streams with gaps in them in the app layer parser until we add proper support.

src/app-layer-parser.c

@@ -707,6 +707,11 @@ int AppLayerParse(Flow *f, uint8_t proto, uint8_t flags, uint8_t *input,
     uint16_t parser_idx = 0;
     AppLayerProto *p = &al_proto_table[proto];
 
+    if (flags & STREAM_GAP) {
+        SCLogDebug("stream gap detected (missing packets), this is not yet supported.");
+        goto error;
+    }
+
     TcpSession *ssn = f->protoctx;
     if (ssn == NULL) {
         SCLogDebug("no TCP session");