import { SshChannel } from '../sshChannel';
import { ChannelMessage, ChannelOpenMessage, SshChannelOpenFailureReason } from '../messages/connectionMessages';
import { CancellationToken } from 'vscode-jsonrpc';
export declare class SshChannelOpeningEventArgs {
    readonly request: ChannelOpenMessage;
    readonly channel: SshChannel;
    readonly isRemoteRequest: boolean;
    constructor(request: ChannelOpenMessage, channel: SshChannel, isRemoteRequest: boolean, cancellation?: CancellationToken);
    /**
     * Specifies a reason that the channel could not be opened.
     *
     * The handler of this event can optionally block the channel by setting
     * a failure reason. If the event is not handled or the reason remains
     * `none` then the channel is allowed to open.
     */
    failureReason: SshChannelOpenFailureReason;
    /**
     * Optional message to go along with a failure reason.
     */
    failureDescription: string | null;
    /**
     * Gets or sets an optional promise that blocks opening the channel until the promise is
     * resolved. An event-handler may assign a promise to this property to handle the channel
     * opening as an asynchronous operation. The promise must resolve to an instance of
     * `ChannelOpenConfirmationMessage`, `ChannelOpenFailureMessage`, or a subclass of one of those.
     */
    openingPromise?: Promise<ChannelMessage>;
    /**
     * Gets a token that is cancelled if the session ends before the request handler
     * completes.
     */
    get cancellation(): CancellationToken;
    private cancellationValue;
    toString(): string;
}
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