/**
 * Supported web protocols for requests made by the SAP Cloud SDK.
 */
export type Protocol = 'http' | 'https' | 'socks';
/**
 * @internal
 * Get {@link Protocol} from its string representation.
 * @param protocol - Protocol as string, either 'http'/'https' or 'http:'/'https:'.
 * @returns Either the matching protocol or undefined.
 */
export declare function getProtocol(protocol: string): Protocol | undefined;