Module json_frame 

Native-JSON WebSocket frame format for the +json codec.

JSON WebSocket messages are text frames carrying a flat object; you read which field is present to know the frame kind. One WebSocket carries exactly one stream, so the WS URL is the route — frames carry neither method nor a stream id (human-readable):

{ "metadata": {…}, "timeoutMillis": 5000 } // open (optional; metadata/deadline)
{ "message": {…} }                         // data message
{ "halfClose": true }                      // client done sending
{ "status": { "code": 0, "message": "" } } // terminal (trailer / reset)

The application message is a native JSON value (not base64 bytes). Proto mode uses binary frames (crate::frame).

Structs

JsonFrame

One WebSocket text frame. The frame kind is chosen by which of message / half_close / status (or a bare metadata open) is present.

JsonStatus

Functions

decode_json_frame

Parse a WebSocket text frame.

encode_json_frame

Serialize a JsonFrame to a WebSocket text payload.

json_frame_to_proto

Convert a post-open client JsonFrame (WS text) into the internal Frame. The frame kind is chosen by which field is present.

json_open_to_subscribe

Build a Subscribe from the open frame, taking the method from the WS route (the frame itself carries no method).

proto_frame_to_json

Convert an internal server Frame into a JsonFrame for a WS text message. Returns None for kinds with no JSON form (client-only kinds).

Type Aliases

JsonMeta

Metadata as a JSON object (single value per key).