Files
allwpilib/simulation/halsim_ws_server
PJ Reiniger f8de482385 [bazel] Update toolchains to 2027-1 (#9016)
This updates to the 2027-1 toolchains. This also is the first version
with the `rules_bzlmodrio_toolchains -> wpilib_toolchains` rename, so
the surface area of the change is a little bit big.

The opencv dep has bzlmod'ified as part of this as well.
2026-06-26 22:44:00 -07:00
..

HAL WebSockets Server

This is an extension that provides a server version of a WebSockets API for transmitting robot hardware interface state over a network. See the Robot Hardware Interface WebSockets API specification for more details on the protocol.

Configuration

The WebSockets server has a number of configuration options available through environment variables.

HALSIMWS_SYSROOT: The local directory to serve non-websocket HTTP content from (e.g. HTML files) starting from /. Defaults to the sim subdirectory of the current working directory.

HALSIMWS_USERROOT: The local directory to serve non-websocket HTTP content from (e.g. HTML files) starting from /user/. Defaults to the sim/user subdirectory of the current working directory.

HALSIMWS_PORT: The port number to listen at. Defaults to 3300.

HALSIMWS_URI: The URI path to use for WebSockets connections. Defaults to "/wpilibws".