Disable to_client http detection. Libhtp expects to_server data first.

src/app-layer-htp.c

@@ -1123,7 +1123,7 @@ void RegisterHTPParsers(void)
     AlpProtoAdd(&alp_proto_ctx, IPPROTO_TCP, ALPROTO_HTTP, "OPTIONS|09|", 8, 0, STREAM_TOSERVER);
     AlpProtoAdd(&alp_proto_ctx, IPPROTO_TCP, ALPROTO_HTTP, "CONNECT|20|", 8, 0, STREAM_TOSERVER);
     AlpProtoAdd(&alp_proto_ctx, IPPROTO_TCP, ALPROTO_HTTP, "CONNECT|09|", 8, 0, STREAM_TOSERVER);
-    AlpProtoAdd(&alp_proto_ctx, IPPROTO_TCP, ALPROTO_HTTP, "HTTP/", 5, 0, STREAM_TOCLIENT);
+    //AlpProtoAdd(&alp_proto_ctx, IPPROTO_TCP, ALPROTO_HTTP, "HTTP/", 5, 0, STREAM_TOCLIENT);
 
     AppLayerRegisterStateFuncs(ALPROTO_HTTP, HTPStateAlloc, HTPStateFree);