StartExec creates a new runtime and returns the initial ExecState.

Metadata keys.

HTTP request attributes.

HTTP response attributes.

Downstream connection attributes.

Upstream connection attributes.

RequestBodyState processes the request body.

RequestSendState processes request send operation.

ResponseBodyState requests the response body from the Proxy, passes it the plugin, and awaits one of the following: - a response to be sent upstream - an immediate response to be sent downstream (with no further processing) - runtime exit.

ResponseSendState sends the response to the Proxy (either a header or body response depending on the phase) and concludes the execution.

SendDownstreamState processes the end of the request.

StartState is the initial state of the runtime.

ExecState defines the interface for a single state in the plugin execution.