import { Transport } from '@modelcontextprotocol/sdk/shared/transport.js';
import { JSONRPCMessage } from '@modelcontextprotocol/sdk/types.js';
export declare class WebSocketServerTransport implements Transport {
    private wss;
    private clients;
    onclose?: () => void;
    onerror?: (error: Error) => void;
    onmessage?: (message: JSONRPCMessage) => void;
    constructor(port?: number);
    send(message: JSONRPCMessage): Promise<void>;
    start(): Promise<void>;
    close(): Promise<void>;
    broadcast(message: JSONRPCMessage): void;
}
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