pi_tcp is used at run time in 5 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) pi_tcp version
650 1 pi_mqtt ^0.5
600 1 pi_http ^0.5
500 pi_mqtt_proxy ^0.5
370 pi_async_wsc ^0.5
3 pi_ws ^0.5
2 pi_async_httpc dev ^0.5