The big problem with pipelining in http 1.x is that a response can break the pipeline part way through and there is no way to know what the server processed. A

The big problem with pipelining in http 1.x is that a response can break the pipeline part way through and there is no way to know what the server processed. A response night for example, mid pipeline be connection:close and that’s that, did any subsequent request get processed? Who knows.