ipfs-http-client/esm/src/dht/find-peer.js

A client library for the IPFS HTTP API

import { Multiaddr } from 'multiaddr';
import { configure } from '../lib/configure.js';
import { toUrlSearchParams } from '../lib/to-url-search-params.js';
import { FinalPeer } from './response-types.js';
export const createFindPeer = configure(api => {
  async function findPeer(peerId, options = {}) {
    const res = await api.post('dht/findpeer', {
      signal: options.signal,
      searchParams: toUrlSearchParams({
        arg: peerId,
        ...options
      }),
      headers: options.headers
    });
    for await (const data of res.ndjson()) {
      if (data.Type === FinalPeer && data.Responses) {
        const {ID, Addrs} = data.Responses[0];
        return {
          id: ID,
          addrs: (Addrs || []).map(a => new Multiaddr(a))
        };
      }
    }
    throw new Error('not found');
  }
  return findPeer;
});