New: Jarvis can push a stream of events to browsers over plain HTTP, consumed by the JavaScript EventSource API. SSE works in both JSON and REST modes and reuses Jarvis's existing CORS, validation, authentication and sessions. See Using Server-Sent Events.
New settings: SSEEndpoints names the endpoints that serve event streams, and SSEHeartbeatInterval controls the keep-alive heartbeat (default 30 seconds, 0 to disable).
New instance methods SendSSE (send an event to one or more streams) and SSEConnections (list open streams), and new shared methods FormatSSE (build an event) and IsSSEText.
The Request object gains IsSSE (true for an SSE request), Connection (the Conga connection name) and an AddHeader method.
Shy results are now accepted from every user hook function. Previously a hook such as AppInitFn or ValidateRequestFn that returned a shy result was rejected at start-up; now it is treated as returning a result.
WebSockets
The built-in WebSocket message handler (used when OnWsReceiveFn is not defined and the HTML interface is enabled) now applies the same restrictions as the HTTP interface: a message's endpoint is run only if it passes IncludeFns/ExcludeFns and is not a hook function. Previously any function in CodeLocation was reachable over the built-in handler. A disallowed endpoint now returns Invalid Endpoint.
WebSocket authentication (WsAuthenticateFn) now runs once per connection: after it succeeds the connection is marked authenticated. A failed authentication closes the connection without dispatching the message to OnWsReceiveFn (previously the message was dispatched before the connection was closed).
With WsAutoUpgrade←0 and no OnWsUpgradeReqFn, the upgrade is now accepted (previously the connection was left waiting). OnWsUpgradeReqFn is now valence-checked at start-up like the other hooks.
OnWsErrorFn is now called when an error occurs on a WebSocket.
Errors from the built-in handler are now reported following ErrorInfoLevel, and WebSocket error events are logged with their detail.
The WsTimeout setting, which had no effect, has been removed.