7221071989

Committed 15 Dec 2023 10:45AM UTC coverage: 68.695% (+0.04%) from 68.654%

Build # 7221071989

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nodech

Commit Message

Merge PR #856 from 'nodech/interactive-scan'

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61.82

/lib/node/http.js

/*!
 * server.js - http server for hsd
 * Copyright (c) 2017-2018, Christopher Jeffrey (MIT License).
 * https://github.com/handshake-org/hsd
 */

'use strict';

const assert = require('bsert');
const path = require('path');
const {Server} = require('bweb');
const Validator = require('bval');
const base58 = require('bcrypto/lib/encoding/base58');
const {BloomFilter} = require('@handshake-org/bfilter');
const sha256 = require('bcrypto/lib/sha256');
const random = require('bcrypto/lib/random');
const {safeEqual} = require('bcrypto/lib/safe');
const util = require('../utils/util');
const TX = require('../primitives/tx');
const Claim = require('../primitives/claim');
const Address = require('../primitives/address');
const Network = require('../protocol/network');
const scanActions = require('../blockchain/common').scanActions;
const pkg = require('../pkg');

/**
 * HTTP
 * @alias module:http.Server
 */

class HTTP extends Server {
  /**
   * Create an http server.
   * @constructor
   * @param {Object} options
   */

  constructor(options) {
    super(new HTTPOptions(options));

    this.network = this.options.network;
    this.logger = this.options.logger.context('node-http');
    this.node = this.options.node;

    this.chain = this.node.chain;
    this.mempool = this.node.mempool;
    this.pool = this.node.pool;
    this.fees = this.node.fees;
    this.miner = this.node.miner;
    this.rpc = this.node.rpc;

    this.init();
  }

  /**
   * Initialize routes.
   * @private
   */

  init() {
    this.on('request', (req, res) => {
      if (req.method === 'POST' && req.pathname === '/')
        return;

      this.logger.debug('Request for method=%s path=%s (%s).',
        req.method, req.pathname, req.socket.remoteAddress);
    });

    this.on('listening', (address) => {
      this.logger.info('Node HTTP server listening on %s (port=%d).',
        address.address, address.port);
    });

    this.initRouter();
    this.initSockets();
  }

  /**
   * Initialize routes.
   * @private
   */

  initRouter() {
    if (this.options.cors)
      this.use(this.cors());

    if (!this.options.noAuth) {
      this.use(this.basicAuth({
        hash: sha256.digest,
        password: this.options.apiKey,
        realm: 'node'
      }));
    }

    this.use(this.bodyParser({
      type: 'json'
    }));

    this.use(this.jsonRPC());
    this.use(this.router());

    this.error((err, req, res) => {
      const code = err.statusCode || 500;
      res.json(code, {
        error: {
          type: err.type,
          code: err.code,
          message: err.message
        }
      });
    });

    this.get('/', async (req, res) => {
      const totalTX = this.mempool ? this.mempool.map.size : 0;
      const size = this.mempool ? this.mempool.getSize() : 0;
      const claims = this.mempool ? this.mempool.claims.size : 0;
      const airdrops = this.mempool ? this.mempool.airdrops.size : 0;
      const orphans = this.mempool ? this.mempool.orphans.size : 0;
      const brontide = this.pool.hosts.brontide;

      const pub = {
        listen: this.pool.options.listen,
        host: null,
        port: null,
        brontidePort: null
      };

      const addr = this.pool.hosts.getLocal();

      if (addr && pub.listen) {
        pub.host = addr.host;
        pub.port = addr.port;
        pub.brontidePort = brontide.port;
      }

      const treeInterval = this.network.names.treeInterval;
      const prevHeight = this.chain.height - 1;
      const treeRootHeight = this.chain.height === 0 ? 0 :
        prevHeight - (prevHeight % treeInterval) + 1;

      const treeCompaction = {
        compacted: false,
        compactOnInit: false,
        compactInterval: null,
        lastCompaction: null,
        nextCompaction: null
      };

      if (!this.chain.options.spv) {
        const chainOptions = this.chain.options;
        const {
          compactionHeight,
          compactFrom
        } = await this.chain.getCompactionHeights();

        treeCompaction.compactOnInit = chainOptions.compactTreeOnInit;

        if (chainOptions.compactTreeOnInit) {
          treeCompaction.compactInterval = chainOptions.compactTreeInitInterval;
          treeCompaction.nextCompaction = compactFrom;
        }

        if (compactionHeight > 0) {
          treeCompaction.compacted = true;
          treeCompaction.lastCompaction = compactionHeight;
        }
      }

      res.json(200, {
        version: pkg.version,
        network: this.network.type,
        chain: {
          height: this.chain.height,
          tip: this.chain.tip.hash.toString('hex'),
          treeRoot: this.chain.tip.treeRoot.toString('hex'),
          treeRootHeight: treeRootHeight,
          progress: this.chain.getProgress(),
          indexers: {
            indexTX: this.chain.options.indexTX,
            indexAddress: this.chain.options.indexAddress
          },
          options: {
            spv: this.chain.options.spv,
            prune: this.chain.options.prune
          },
          treeCompaction: treeCompaction,
          state: {
            tx: this.chain.db.state.tx,
            coin: this.chain.db.state.coin,
            value: this.chain.db.state.value,
            burned: this.chain.db.state.burned
          }
        },
        pool: {
          host: this.pool.options.host,
          port: this.pool.options.port,
          brontidePort: this.pool.options.brontidePort,
          identitykey: brontide.getKey('base32'),
          agent: this.pool.options.agent,
          services: this.pool.options.services.toString(2),
          outbound: this.pool.peers.outbound,
          inbound: this.pool.peers.inbound,
          public: pub
        },
        mempool: {
          tx: totalTX,
          size: size,
          claims: claims,
          airdrops: airdrops,
          orphans: orphans
        },
        time: {
          uptime: this.node.uptime(),
          system: util.now(),
          adjusted: this.network.now(),
          offset: this.network.time.offset
        },
        memory: this.logger.memoryUsage()
      });
    });

    // UTXO by address
    this.get('/coin/address/:address', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const address = valid.str('address');

      enforce(address, 'Address is required.');
      enforce(!this.chain.options.spv, 'Cannot get coins in SPV mode.');

      const addr = Address.fromString(address, this.network);
      const coins = await this.node.getCoinsByAddress(addr);
      const result = [];

      for (const coin of coins)
        result.push(coin.getJSON(this.network));

      res.json(200, result);
    });

    // UTXO by id
    this.get('/coin/:hash/:index', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const hash = valid.bhash('hash');
      const index = valid.u32('index');

      enforce(hash, 'Hash is required.');
      enforce(index != null, 'Index is required.');
      enforce(!this.chain.options.spv, 'Cannot get coins in SPV mode.');

      const coin = await this.node.getCoin(hash, index);

      if (!coin) {
        res.json(404);
        return;
      }

      res.json(200, coin.getJSON(this.network));
    });

    // Bulk read UTXOs
    // TODO(boymanjor): Deprecate this endpoint
    // once the equivalent functionality is included
    // in the wallet API.
    this.post('/coin/address', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const addresses = valid.array('addresses');

      enforce(addresses, 'Addresses is required.');
      enforce(!this.chain.options.spv, 'Cannot get coins in SPV mode.');

      this.logger.warning('%s %s %s',
        'Warning: endpoint being considered for deprecation.',
        'Known to cause CPU exhaustion if too many addresses',
        'are queried or too many results are found.');

      const addrs = [];
      for (const address of addresses) {
        addrs.push(Address.fromString(address, this.network));
      }

      const coins = await this.node.getCoinsByAddress(addrs);
      const result = [];

      for (const coin of coins)
        result.push(coin.getJSON(this.network));

      res.json(200, result);
    });

    // TX by hash
    this.get('/tx/:hash', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const hash = valid.bhash('hash');

      enforce(hash, 'Hash is required.');
      enforce(!this.chain.options.spv, 'Cannot get TX in SPV mode.');

      const meta = await this.node.getMeta(hash);

      if (!meta) {
        res.json(404);
        return;
      }

      const view = await this.node.getMetaView(meta);

      res.json(200, meta.getJSON(this.network, view, this.chain.height));
    });

    // TX by address
    this.get('/tx/address/:address', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const address = valid.str('address');

      enforce(address, 'Address is required.');
      enforce(!this.chain.options.spv, 'Cannot get TX in SPV mode.');

      const addr = Address.fromString(address, this.network);
      const metas = await this.node.getMetaByAddress(addr);
      const result = [];

      for (const meta of metas) {
        const view = await this.node.getMetaView(meta);
        result.push(meta.getJSON(this.network, view, this.chain.height));
      }

      res.json(200, result);
    });

    // Bulk read TXs
    // TODO(boymanjor): Deprecate this endpoint
    // once the equivalent functionality is included
    // in the wallet API.
    this.post('/tx/address', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const addresses = valid.array('addresses');

      enforce(addresses, 'Addresses is required.');
      enforce(!this.chain.options.spv, 'Cannot get TX in SPV mode.');

      this.logger.warning('%s %s %s',
        'Warning: endpoint being considered for deprecation.',
        'Known to cause CPU exhaustion if too many addresses',
        'are queried or too many results are found.');

      const addrs = [];
      for (const address of addresses) {
        addrs.push(Address.fromString(address, this.network));
      }

      const metas = await this.node.getMetaByAddress(addrs);
      const result = [];

      for (const meta of metas) {
        const view = await this.node.getMetaView(meta);
        result.push(meta.getJSON(this.network, view, this.chain.height));
      }

      res.json(200, result);
    });

    // Block by hash/height
    this.get('/block/:block', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const hash = valid.uintbhash('block');

      enforce(hash != null, 'Hash or height required.');
      enforce(!this.chain.options.spv, 'Cannot get block in SPV mode.');

      const block = await this.chain.getBlock(hash);

      if (!block) {
        res.json(404);
        return;
      }

      const view = await this.chain.getBlockView(block);

      if (!view) {
        res.json(404);
        return;
      }

      const height = await this.chain.getHeight(hash);
      const depth = this.chain.height - height + 1;

      res.json(200, block.getJSON(this.network, view, height, depth));
    });

    // Block Header by hash/height
    this.get('/header/:block', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const hash = valid.uintbhash('block');

      enforce(hash != null, 'Hash or height required.');

      const entry = await this.chain.getEntry(hash);

      if (!entry) {
        res.json(404);
        return;
      }

      res.json(200, entry.toJSON());
    });

    // Mempool snapshot
    this.get('/mempool', async (req, res) => {
      enforce(this.mempool, 'No mempool available.');

      const hashes = this.mempool.getSnapshot();
      const result = [];

      for (const hash of hashes)
        result.push(hash.toString('hex'));

      res.json(200, result);
    });

    // Mempool Rejection Filter
    this.get('/mempool/invalid', async (req, res) => {
      enforce(this.mempool, 'No mempool available.');

      const valid = Validator.fromRequest(req);
      const verbose = valid.bool('verbose', false);

      const rejects = this.mempool.rejects;
      res.json(200, {
        items: rejects.items,
        filter: verbose ? rejects.filter.toString('hex') : undefined,
        size: rejects.size,
        entries: rejects.entries,
        n: rejects.n,
        limit: rejects.limit,
        tweak: rejects.tweak
      });
    });

    // Mempool Rejection Test
    this.get('/mempool/invalid/:hash', async (req, res) => {
      enforce(this.mempool, 'No mempool available.');

      const valid = Validator.fromRequest(req);
      const hash = valid.bhash('hash');

      enforce(hash, 'Must pass hash.');

      const invalid = this.mempool.rejects.test(hash, 'hex');

      res.json(200, { invalid });
    });

    // Broadcast TX
    this.post('/broadcast', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const raw = valid.buf('tx');

      enforce(raw, 'TX is required.');

      const tx = TX.decode(raw);

      await this.node.sendTX(tx);

      res.json(200, { success: true });
    });

    // Broadcast Claim
    this.post('/claim', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const raw = valid.buf('claim');

      enforce(raw, 'Claim is required.');

      const claim = Claim.decode(raw);

      await this.node.sendClaim(claim);

      res.json(200, { success: true });
    });

    // Estimate fee
    this.get('/fee', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const blocks = valid.u32('blocks');

      if (!this.fees) {
        res.json(200, { rate: this.network.feeRate });
        return;
      }

      const fee = this.fees.estimateFee(blocks);

      res.json(200, { rate: fee });
    });

    // Reset chain
    this.post('/reset', async (req, res) => {
      const valid = Validator.fromRequest(req);
      const height = valid.u32('height');

      enforce(height != null, 'Height is required.');
      enforce(height <= this.chain.height,
        'Height cannot be greater than chain tip.');

      await this.chain.reset(height);

      res.json(200, { success: true });
    });
  }

  /**
   * Handle new websocket.
   * @private
   * @param {WebSocket} socket
   */

  handleSocket(socket) {
    socket.hook('auth', (...args) => {
      if (socket.channel('auth'))
        throw new Error('Already authed.');

      if (!this.options.noAuth) {
        const valid = new Validator(args);
        const key = valid.str(0, '');

        if (key.length > 255)
          throw new Error('Invalid API key.');

        const data = Buffer.from(key, 'ascii');
        const hash = sha256.digest(data);

        if (!safeEqual(hash, this.options.apiHash))
          throw new Error('Invalid API key.');
      }

      socket.join('auth');

      this.logger.info('Successful auth from %s.', socket.host);
      this.handleAuth(socket);

      return null;
    });

    socket.fire('version', {
      version: pkg.version,
      network: this.network.type
    });
  }

  /**
   * Handle new auth'd websocket.
   * @private
   * @param {WebSocket} socket
   */

  handleAuth(socket) {
    socket.hook('watch chain', () => {
      socket.join('chain');
      return null;
    });

    socket.hook('unwatch chain', () => {
      socket.leave('chain');
      return null;
    });

    socket.hook('watch mempool', () => {
      socket.join('mempool');
      return null;
    });

    socket.hook('unwatch mempool', () => {
      socket.leave('mempool');
      return null;
    });

    socket.hook('set filter', (...args) => {
      const valid = new Validator(args);
      const data = valid.buf(0);

      if (!data)
        throw new Error('Invalid parameter.');

      socket.filter = BloomFilter.decode(data);

      return null;
    });

    socket.hook('get tip', () => {
      return this.chain.tip.encode();
    });

    socket.hook('get entry', async (...args) => {
      const valid = new Validator(args);
      const block = valid.uintbhash(0);

      if (block == null)
        throw new Error('Invalid parameter.');

      const entry = await this.chain.getEntry(block);

      if (!entry)
        return null;

      if (!await this.chain.isMainChain(entry))
        return null;

      return entry.encode();
    });

    socket.hook('get hashes', async (...args) => {
      const valid = new Validator(args);
      const start = valid.i32(0, -1);
      const end = valid.i32(1, -1);

      return this.chain.getHashes(start, end);
    });

    socket.hook('add filter', (...args) => {
      const valid = new Validator(args);
      const chunks = valid.array(0);

      if (!chunks)
        throw new Error('Invalid parameter.');

      if (!socket.filter)
        throw new Error('No filter set.');

      const items = new Validator(chunks);

      for (let i = 0; i < chunks.length; i++) {
        const data = items.buf(i);

        if (!data)
          throw new Error('Bad data chunk.');

        socket.filter.add(data);

        if (this.node.spv)
          this.pool.watch(data);
      }

      return null;
    });

    socket.hook('reset filter', () => {
      socket.filter = null;
      return null;
    });

    socket.hook('estimate fee', (...args) => {
      const valid = new Validator(args);
      const blocks = valid.u32(0);

      if (!this.fees)
        return this.network.feeRate;

      return this.fees.estimateFee(blocks);
    });

    socket.hook('send', (...args) => {
      const valid = new Validator(args);
      const data = valid.buf(0);

      if (!data)
        throw new Error('Invalid parameter.');

      const tx = TX.decode(data);

      this.node.relay(tx);

      return null;
    });

    socket.hook('send claim', (...args) => {
      const valid = new Validator(args);
      const data = valid.buf(0);

      if (!data)
        throw new Error('Invalid parameter.');

      const claim = Claim.decode(data);

      this.node.relayClaim(claim);

      return null;
    });

    socket.hook('get name', async (...args) => {
      const valid = new Validator(args);
      const nameHash = valid.bhash(0);

      if (!nameHash)
        throw new Error('Invalid parameter.');

      const ns = await this.node.getNameStatus(nameHash);

      return ns.getJSON(this.chain.height + 1, this.network);
    });

    socket.hook('rescan', (...args) => {
      const valid = new Validator(args);
      const start = valid.uintbhash(0);

      if (start == null)
        throw new Error('Invalid parameter.');

      return this.scan(socket, start);
    });

    socket.hook('rescan interactive', (...args) => {
      const valid = new Validator(args);
      const start = valid.uintbhash(0);
      const rawFilter = valid.buf(1);
      let filter = socket.filter;

      if (start == null)
        throw new Error('Invalid parameter.');

      if (rawFilter)
        filter = BloomFilter.fromRaw(rawFilter);

      return this.scanInteractive(socket, start, filter);
    });
  }

  /**
   * Bind to chain events.
   * @private
   */

  initSockets() {
    const pool = this.mempool || this.pool;

    this.chain.on('connect', (entry, block, view) => {
      const sockets = this.channel('chain');

      if (!sockets)
        return;

      const raw = entry.encode();

      this.to('chain', 'chain connect', raw);

      for (const socket of sockets) {
        const txs = this.filterBlock(socket, block);
        socket.fire('block connect', raw, txs);
      }
    });

    this.chain.on('disconnect', (entry, block, view) => {
      const sockets = this.channel('chain');

      if (!sockets)
        return;

      const raw = entry.encode();

      this.to('chain', 'chain disconnect', raw);
      this.to('chain', 'block disconnect', raw);
    });

    this.chain.on('reset', (tip) => {
      const sockets = this.channel('chain');

      if (!sockets)
        return;

      this.to('chain', 'chain reset', tip.encode());
    });

    pool.on('tx', (tx) => {
      const sockets = this.channel('mempool');

      if (!sockets)
        return;

      const raw = tx.encode();

      for (const socket of sockets) {
        if (!this.filterTX(socket, tx))
          continue;

        socket.fire('tx', raw);
      }
    });

    this.chain.on('tree commit', (root, entry, block) => {
      const sockets = this.channel('chain');

      if (!sockets)
        return;

      this.to('chain', 'tree commit', root, entry, block);
    });
  }

  /**
   * Filter block by socket.
   * @private
   * @param {WebSocket} socket
   * @param {Block} block
   * @returns {TX[]}
   */

  filterBlock(socket, block) {
    if (!socket.filter)
      return [];

    const txs = [];

    for (const tx of block.txs) {
      if (this.filterTX(socket, tx))
        txs.push(tx.encode());
    }

    return txs;
  }

  /**
   * Filter transaction by socket.
   * @private
   * @param {WebSocket} socket
   * @param {TX} tx
   * @returns {Boolean}
   */

  filterTX(socket, tx) {
    if (!socket.filter)
      return false;

    return tx.testAndMaybeUpdate(socket.filter);
  }

  /**
   * Scan using a socket's filter.
   * @private
   * @param {WebSocket} socket
   * @param {Hash} start
   * @returns {Promise}
   */

  async scan(socket, start) {
    await this.node.scan(start, socket.filter, (entry, txs) => {
      const block = entry.encode();
      const raw = [];

      for (const tx of txs)
        raw.push(tx.encode());

      return socket.call('block rescan', block, raw);
    });

    return null;
  }

  /**
   * Scan using a socket's filter (interactive).
   * @param {WebSocket} socket
   * @param {Hash} start
   * @param {BloomFilter} filter
   * @returns {Promise}
   */

  async scanInteractive(socket, start, filter) {
    const iter = async (entry, txs) => {
      const block = entry.encode();
      const raw = [];

      for (const tx of txs)
        raw.push(tx.encode());

      const action = await socket.call('block rescan interactive', block, raw);
      const valid = new Validator(action);
      const actionType = valid.i32('type');

      switch (actionType) {
        case scanActions.NEXT:
        case scanActions.ABORT:
        case scanActions.REPEAT: {
          return {
            type: actionType
          };
        }
        case scanActions.REPEAT_SET: {
          // NOTE: This is operation is on the heavier side,
          // because it sends the whole Filter that can be quite
          // big depending on the situation.
          // NOTE: In HTTP Context REPEAT_SET wont modify socket.filter
          // but instead setup new one for the rescan. Further REPEAT_ADDs will
          // modify this filter instead of the socket.filter.
          const rawFilter = valid.buf('filter');
          let filter = null;

          if (rawFilter != null)
            filter = BloomFilter.fromRaw(rawFilter);

          return {
            type: scanActions.REPEAT_SET,
            filter: filter
          };
        }
        case scanActions.REPEAT_ADD: {
          // NOTE: This operation depending on the filter
          // that was provided can be either modifying the
          // socket.filter or the filter provided by REPEAT_SET.
          const chunks = valid.array('chunks');

          if (!chunks)
            throw new Error('Invalid parameter.');

          return {
            type: scanActions.REPEAT_ADD,
            chunks: chunks
          };
        }

        default:
          throw new Error('Unknown action.');
      }
    };

    try {
      await this.node.scanInteractive(start, filter, iter);
    } catch (err) {
      return socket.call('block rescan interactive abort', err.message);
    }

    return null;
  }
}

class HTTPOptions {
  /**
   * HTTPOptions
   * @alias module:http.HTTPOptions
   * @constructor
   * @param {Object} options
   */

  constructor(options) {
    this.network = Network.primary;
    this.logger = null;
    this.node = null;
    this.apiKey = base58.encode(random.randomBytes(20));
    this.apiHash = sha256.digest(Buffer.from(this.apiKey, 'ascii'));
    this.noAuth = false;
    this.cors = false;

    this.prefix = null;
    this.host = '127.0.0.1';
    this.port = 8080;
    this.ssl = false;
    this.keyFile = null;
    this.certFile = null;

    this.fromOptions(options);
  }

  /**
   * Inject properties from object.
   * @private
   * @param {Object} options
   * @returns {HTTPOptions}
   */

  fromOptions(options) {
    assert(options);
    assert(options.node && typeof options.node === 'object',
      'HTTP Server requires a Node.');

    this.node = options.node;
    this.network = options.node.network;
    this.logger = options.node.logger;

    this.port = this.network.rpcPort;

    if (options.logger != null) {
      assert(typeof options.logger === 'object');
      this.logger = options.logger;
    }

    if (options.apiKey != null) {
      assert(typeof options.apiKey === 'string',
        'API key must be a string.');
      assert(options.apiKey.length <= 255,
        'API key must be under 256 bytes.');
      this.apiKey = options.apiKey;
      this.apiHash = sha256.digest(Buffer.from(this.apiKey, 'ascii'));
    }

    if (options.noAuth != null) {
      assert(typeof options.noAuth === 'boolean');
      this.noAuth = options.noAuth;
    }

    if (options.cors != null) {
      assert(typeof options.cors === 'boolean');
      this.cors = options.cors;
    }

    if (options.prefix != null) {
      assert(typeof options.prefix === 'string');
      this.prefix = options.prefix;
      this.keyFile = path.join(this.prefix, 'key.pem');
      this.certFile = path.join(this.prefix, 'cert.pem');
    }

    if (options.host != null) {
      assert(typeof options.host === 'string');
      this.host = options.host;
    }

    if (options.port != null) {
      assert((options.port & 0xffff) === options.port,
        'Port must be a number.');
      this.port = options.port;
    }

    if (options.ssl != null) {
      assert(typeof options.ssl === 'boolean');
      this.ssl = options.ssl;
    }

    if (options.keyFile != null) {
      assert(typeof options.keyFile === 'string');
      this.keyFile = options.keyFile;
    }

    if (options.certFile != null) {
      assert(typeof options.certFile === 'string');
      this.certFile = options.certFile;
    }

    // Allow no-auth implicitly
    // if we're listening locally.
    if (!options.apiKey) {
      if (   this.host === '127.0.0.1'
          || this.host === '::1'
          || this.host === 'localhost')
        this.noAuth = true;
    }

    return this;
  }

  /**
   * Instantiate http options from object.
   * @param {Object} options
   * @returns {HTTPOptions}
   */

  static fromOptions(options) {
    return new HTTPOptions().fromOptions(options);
  }
}

/*
 * Helpers
 */

function enforce(value, msg) {
  if (!value) {
    const err = new Error(msg);
    err.statusCode = 400;
    throw err;
  }
}

/*
 * Expose
 */

module.exports = HTTP;

handshake-org / hsd / 7221071989

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