123456789101112131415161718192021222324252627282930313233343536373839404142434445464748
import { WireProtocol } from "./protocol.ts";import { Document } from "../types.ts";
export const driverMetadata = {  driver: {    name: "Deno Mongo",    version: "v0.0.1",  },  os: {    type: Deno.build.os,    name: Deno.build.os,    architecture: Deno.build.arch,  },};
export interface HandshakeDocument extends Document {  ismaster: boolean;  // deno-lint-ignore no-explicit-any  client: any;  compression: string[];  saslSupportedMechs?: string;  speculativeAuthenticate?: Document;}
interface HandshakeResponse {  ismaster: string;  maxBsonObjectSize: number;  maxMessageSizeBytes: number;  maxWriteBatchSize: number;  localTime: Date;  logicalSessionTimeoutMinutes: number;  connectionId: number;  minWireVersion: number;  maxWireVersion: number;  readOnly: boolean;  ok: number;}
export async function handshake(  protocol: WireProtocol,): Promise<HandshakeResponse> {  const reply = await protocol.commandSingle<HandshakeResponse>("admin", {    isMaster: true,    client: driverMetadata,  });  return reply;}