# libtmux::ProtocolError

- **Module:** libtmux
- **Package:** libtmux-cxx
- **Language:** C++
- **Kind:** struct
- **Source:** https://github.com/libtmux/libtmux-cxx/blob/393d4b0ad666f18a6581f1eb281741a75a7503f0/include/libtmux/control.hpp#L40
- **Page:** https://libtmux.org/en/cxx/latest/reference/libtmux-protocolerror/

Why a control operation stopped.

The stream is terminal after a protocol failure: a caller cannot resynchronise it, only start a new one. `delivery` says whether the affected request was untouched, fully written, answered, or left indeterminate.

## Members

- `message` (attribute)
- `delivery` (attribute)