ipfs-http-client/esm/src/dht/find-provs.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 { Provider } from './response-types.js';
export const createFindProvs = configure(api => {
  async function* findProvs(cid, options = {}) {
    const res = await api.post('dht/findprovs', {
      signal: options.signal,
      searchParams: toUrlSearchParams({
        arg: cid.toString(),
        ...options
      }),
      headers: options.headers
    });
    for await (const message of res.ndjson()) {
      if (message.Type === Provider && message.Responses) {
        for (const {ID, Addrs} of message.Responses) {
          yield {
            id: ID,
            addrs: (Addrs || []).map(a => new Multiaddr(a))
          };
        }
      }
    }
  }
  return findProvs;
});