/**
 * Collects current and cumulative measurements about a session.
 */
export declare class SessionMetrics {
    private startTime;
    private messagesSentCount;
    private messagesReceivedCount;
    private bytesSentSum;
    private bytesReceivedSum;
    private reconnectionsCount;
    private currentLatency;
    private minLatency;
    private maxLatency;
    private latencySum;
    private latencyCount;
    private browserTime;
    private nodejsTime;
    /**
     * Gets the total cumulative number of messages sent for the duration of the session,
     * including all channels and non-channel protocol messages.
     */
    get messagesSent(): number;
    /**
     * Gets the total cumulative number of messages received for the duration of the session,
     * including all channels and non-channel protocol messages.
     */
    get messagesReceived(): number;
    /**
     * Gets the total cumulative number of bytes sent for the duration of the session,
     * including all channels and non-channel protocol messages, and including message
     * framing, padding, and MAC bytes.
     */
    get bytesSent(): number;
    /**
     * Gets the total cumulative number of bytes received for the duration of the session,
     * including all channels and non-channel protocol messages, and including message
     * framing, padding, and MAC bytes.
     */
    get bytesReceived(): number;
    /**
     * Gets the number of times the session has reconnected.
     * </summary>
     * <remarks>
     * Reconnection requires both sides to support the
     * <see cref="SshProtocolExtensionNames.SessionReconnect" /> protocol extension.
     */
    get reconnections(): number;
    /**
     * Gets the average measured round-trip connection latency between client and server
     * over the duration of the session, in milliseconds.
     * </summary>
     * <remarks>
     * Latency measurement requires both sides to support the
     * <see cref="SshProtocolExtensionNames.SessionLatency" /> protocol extension.
     * If not supported, this Sum will be 0.
     */
    get latencyAverageMs(): number;
    /**
     * Gets the minimum measured round-trip connection latency between client and server
     * over the duration of the session, in milliseconds.
     * </summary>
     * <remarks>
     * Latency measurement requires both sides to support the
     * <see cref="SshProtocolExtensionNames.SessionLatency" /> protocol extension.
     * If not supported, this Sum will be 0.
     */
    get latencyMinMs(): number;
    /**
     * Gets the maximum measured round-trip connection latency between client and server
     * over the duration of the session, in milliseconds.
     * </summary>
     * <remarks>
     * Latency measurement requires both sides to support the
     * <see cref="SshProtocolExtensionNames.SessionLatency" /> protocol extension.
     * If not supported, this Sum will be 0.
     */
    get latencyMaxMs(): number;
    /**
     * Gets the most recent measurement of round-trip connection latency between client and
     * server, in milliseconds.
     * </summary>
     * <remarks>
     * Latency measurement requires both sides to support the
     * <see cref="SshProtocolExtensionNames.SessionLatency" /> protocol extension.
     * If not supported or the session is not currently connected, this Sum will be 0.
     */
    get latencyCurrentMs(): number;
    private readonly messageSentEmitter;
    readonly onMessageSent: import("vscode-jsonrpc").Event<{
        time: number;
        size: number;
    }>;
    private readonly messageReceivedEmitter;
    readonly onMessageReceived: import("vscode-jsonrpc").Event<{
        time: number;
        size: number;
    }>;
    private readonly latencyUpdatedEmitter;
    readonly onLatencyUpdated: import("vscode-jsonrpc").Event<{
        time: number;
        latency: number;
    }>;
    private readonly sessionClosedEmitter;
    readonly onSessionClosed: import("vscode-jsonrpc").Event<void>;
    toString(): string;
}
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