import type Http from 'http';
import Stream from 'stream';
import { ClickHouseLogLevel, type LogWriter, type ConnOperation, type ResponseHeaders, type ClickHouseSummary } from '@clickhouse/client-common';
import { type NodeConnectionParams } from './node_base_connection';
export interface RequestParams {
    method: 'GET' | 'POST';
    url: URL;
    headers: Http.OutgoingHttpHeaders;
    body?: string | Stream.Readable;
    abort_signal: AbortSignal;
    enable_response_compression?: boolean;
    enable_request_compression?: boolean;
    try_decompress_response_stream?: boolean;
    ignore_error_response?: boolean;
    parse_summary?: boolean;
    query: string;
    query_id: string;
    log_writer: LogWriter;
    log_level: ClickHouseLogLevel;
}
export interface RequestResult {
    stream: Stream.Readable;
    response_headers: ResponseHeaders;
    http_status_code?: number;
    summary?: ClickHouseSummary;
}
type CreateClientRequest = (params: RequestParams) => Http.ClientRequest;
export declare class SocketPool {
    private readonly connectionId;
    private readonly params;
    private readonly createClientRequest;
    private readonly agent;
    private readonly jsonHandling;
    private readonly knownSockets;
    private requestCounter;
    private getNewRequestId;
    private socketCounter;
    private getNewSocketId;
    constructor(connectionId: string, params: NodeConnectionParams, createClientRequest: CreateClientRequest, agent: Http.Agent);
    request(params: RequestParams, op: ConnOperation): Promise<RequestResult>;
    private parseSummary;
}
export {};