import { URI } from "../../grammar/uri.js";
import { TransportError } from "../exceptions/transport-error.js";
import { IncomingRequestMessage } from "./incoming-request-message.js";
import { OutgoingResponse, ResponseOptions } from "./outgoing-response.js";
/**
 * A SIP message sent from a remote client to a local server.
 * @remarks
 * For the purpose of invoking a particular operation.
 * https://tools.ietf.org/html/rfc3261#section-7.1
 * @public
 */
export interface IncomingRequest {
    /** Delegate providing custom handling of this incoming request. */
    delegate?: IncomingRequestDelegate;
    /** The incoming message. */
    readonly message: IncomingRequestMessage;
    /**
     * Send a 2xx positive final response to this request. Defaults to 200.
     * @param options - Response options bucket.
     */
    accept(options?: ResponseOptions): OutgoingResponse;
    /**
     * Send a 1xx provisional response to this request. Defaults to 180. Excludes 100.
     * Note that per RFC 4320, this method may only be used to respond to INVITE requests.
     * @param options - Response options bucket.
     */
    progress(options?: ResponseOptions): OutgoingResponse;
    /**
     * Send a 3xx negative final response to this request. Defaults to 302.
     * @param contacts - Contacts to redirect the UAC to.
     * @param options - Response options bucket.
     */
    redirect(contacts: Array<URI>, options?: ResponseOptions): OutgoingResponse;
    /**
     * Send a 4xx, 5xx, or 6xx negative final response to this request. Defaults to 480.
     * @param options -  Response options bucket.
     */
    reject(options?: ResponseOptions): OutgoingResponse;
    /**
     * Send a 100 outgoing response to this request.
     * @param options - Response options bucket.
     */
    trying(options?: ResponseOptions): OutgoingResponse;
}
/**
 * Delegate providing custom handling of incoming requests.
 * @public
 */
export interface IncomingRequestDelegate {
    /**
     * Receive CANCEL request.
     * https://tools.ietf.org/html/rfc3261#section-9.2
     * Note: Currently CANCEL is being handled as a special case.
     * No UAS is created to handle the CANCEL and the response to
     * it CANCEL is being handled statelessly by the user agent core.
     * As such, there is currently no way to externally impact the
     * response to the a CANCEL request and thus the method here is
     * receiving a "message" (as apposed to a "uas").
     * @param message - Incoming CANCEL request message.
     */
    onCancel?(message: IncomingRequestMessage): void;
    /**
     * A transport error occurred attempted to send a response.
     * @param error - Transport error.
     */
    onTransportError?(error: TransportError): void;
}