All files / lib/serialize/address serializeIPv4.ts

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import { BufferWriter } from '@node-dlc/bufio';
 
import { AddressIPv4 } from '../../domain/AddressIPv4';
import { ipv4StringToBuffer } from './ipv4StringToBuffer';
 
/**
 * Serializes an IPv4 address in a Buffer that can be sent
 * over the wire.
 */
export function serializeIPv4(address: AddressIPv4): Buffer {
  const writer = new BufferWriter(Buffer.alloc(7));
 
  const hostBytes = ipv4StringToBuffer(address.host);
 
  writer.writeUInt8(address.type);
  writer.writeBytes(hostBytes);
  writer.writeUInt16BE(address.port);
 
  return writer.toBuffer();
}