/**
 * Spok SmartSuite TCP API client.
 * Implements the proprietary binary+XML socket protocol.
 *
 * Protocol: 12-byte header (version(4) + refId(4) + bodySize(4), big-endian)
 * followed by a UTF-8 XML body padded to a minimum of 1000 bytes.
 */
import { AmcomHeader, SpokResponse } from "./types";
/** Amcom API protocol version. */
export declare const API_VERSION = 2;
/** Reference ID sent with each request. */
export declare const REFERENCE_ID = 0;
/** Minimum body size in bytes (Amcom requires at least 1000 bytes). */
export declare const MIN_BODY_SIZE = 1000;
/** Binary header size in bytes. */
export declare const HEADER_SIZE = 12;
/** Default request timeout in milliseconds. */
export declare const DEFAULT_TIMEOUT = 60000;
/**
 * Build a 12-byte binary header: version(4) + refid(4) + size(4), big-endian.
 */
export declare function buildHeader(bodyLength: number): Buffer;
/**
 * Parse a 12-byte binary header.
 */
export declare function parseHeader(buf: Buffer): AmcomHeader;
/**
 * Send a request to a single Spok SmartSuite TCP API host and return the parsed response.
 */
export declare function amcomRequest(host: string, port: number, method: string, params?: Record<string, string | null | undefined>, useSsl?: boolean, insecure?: boolean, debug?: boolean, timeout?: number): Promise<SpokResponse>;
/**
 * Send a request trying failover hosts on connection failure.
 */
export declare function amcomRequestWithFailover(hosts: string[], port: number, method: string, params?: Record<string, string | null | undefined>, useSsl?: boolean, insecure?: boolean, debug?: boolean, timeout?: number): Promise<SpokResponse>;