Crate codetics_ocpp_ws 

A small, dependency-light WebSocket implementation for OCPP-J.

• RFC 6455 framing, fragmentation, control frames and close handshake.
• RFC 7692 permessage-deflate, which OCPP 2.0.1/2.1 make mandatory for a CSMS (Part 4 §3.3), with a memory profile suited to very many idle connections (see deflate).
• The HTTP upgrade itself is left to the embedding HTTP server (axum/hyper on the CSMS side); client contains a minimal client for tests and simulators.

The connection is split into a cancel-safe WsReader and a WsWriter so that one task per connection can multiplex reads, timers and commands.

Re-exports

pub use conn::Message;

pub use conn::Role;

pub use conn::WsConfig;

pub use conn::WsError;

pub use conn::WsReader;

pub use conn::WsWriter;

pub use conn::close_code;

pub use deflate::DeflateConfig;

pub use deflate::DeflateParams;

Modules

base64

Standard Base64 (RFC 4648 §4) with padding.

client

Minimal WebSocket client, used by integration tests and the charging-station simulator. connect opens plain TCP; [handshake] runs over any established stream (e.g. a TLS stream).

conn

Message-level reader and writer halves of a WebSocket connection.

deflate

RFC 7692 permessage-deflate: negotiation and per-message codec.

frame

RFC 6455 §5 base framing.

handshake

Opening handshake helpers (RFC 6455 §4).

sha1

SHA-1 (FIPS 180-4), used only to compute Sec-WebSocket-Accept. SHA-1 is not used for any security property here; RFC 6455 mandates it purely as a handshake checksum.

Functions

server

Wraps an upgraded server-side stream into reader/writer halves.