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/// This interface defines a handler of incoming HTTP Requests. It should
/// be exported by components which can respond to HTTP Requests.
@since(version = 0.2.0)
interface incoming-handler {
@since(version = 0.2.0)
use types.{incoming-request, response-outparam};
/// This function is invoked with an incoming HTTP Request, and a resource
/// `response-outparam` which provides the capability to reply with an HTTP
/// Response. The response is sent by calling the `response-outparam.set`
/// method, which allows execution to continue after the response has been
/// sent. This enables both streaming to the response body, and performing other
/// work.
///
/// The implementor of this function must write a response to the
/// `response-outparam` before returning, or else the caller will respond
/// with an error on its behalf.
@since(version = 0.2.0)
handle: func(
request: incoming-request,
response-out: response-outparam
);
}
/// This interface defines a handler of outgoing HTTP Requests. It should be
/// imported by components which wish to make HTTP Requests.
@since(version = 0.2.0)
interface outgoing-handler {
@since(version = 0.2.0)
use types.{
outgoing-request, request-options, future-incoming-response, error-code
};
/// This function is invoked with an outgoing HTTP Request, and it returns
/// a resource `future-incoming-response` which represents an HTTP Response
/// which may arrive in the future.
///
/// The `options` argument accepts optional parameters for the HTTP
/// protocol's transport layer.
///
/// This function may return an error if the `outgoing-request` is invalid
/// or not allowed to be made. Otherwise, protocol errors are reported
/// through the `future-incoming-response`.
@since(version = 0.2.0)
handle: func(
request: outgoing-request,
options: option<request-options>
) -> result<future-incoming-response, error-code>;
}
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