/**
 * @fileoverview Block Fetch Transport Interface
 *
 * Defines the transport abstraction for fetching raw block data from remote nodes.
 * The interface lives in brightchain-lib so it can be shared; HTTP implementations
 * live in brightchain-api-lib.
 *
 * @see cross-node-eventual-consistency design, Section 2
 */
import { PoolId } from '../storage/pooledBlockStore';
/**
 * Transport abstraction for fetching raw block data from a specific remote node.
 * Implementations handle the actual network protocol (HTTP, gRPC, etc.).
 */
export interface IBlockFetchTransport {
    /**
     * Fetch raw block data from a specific remote node.
     * @param nodeId - The target node identifier
     * @param blockId - The block checksum/ID to fetch
     * @param poolId - Optional pool scope for the fetch
     * @returns The raw block bytes
     * @throws BlockFetchError on failure
     */
    fetchBlockFromNode(nodeId: string, blockId: string, poolId?: PoolId): Promise<Uint8Array>;
}
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