fix: make findprovs return all responses (#1041)

* fix: make findprovs return all responses

* test: add test for many providers from interface-ipfs-core

* chore: update interface-ipfs-core dep

Author: jacobheun

package.json

@@ -85,7 +85,7 @@
     "cross-env": "^5.2.0",
     "dirty-chai": "^2.0.1",
     "go-ipfs-dep": "~0.4.21",
-    "interface-ipfs-core": "~0.106.0",
+    "interface-ipfs-core": "~0.107.0",
     "ipfsd-ctl": "~0.43.0",
     "nock": "^10.0.2",
     "stream-equal": "^1.1.1"

src/dht/findprovs.js

@@ -23,29 +23,26 @@ module.exports = (send) => {
 
     const handleResult = (res, callback) => {
       // Inconsistent return values in the browser vs node
-      if (Array.isArray(res)) {
-        res = res.find(r => r.Type === 4)
+      if (!Array.isArray(res)) {
+        res = [res]
       }
 
-      // callback with an empty array if no providers are found
-      // 4 = Provider
-      // https://github.com/libp2p/go-libp2p-core/blob/6e566d10f4a5447317a66d64c7459954b969bdab/routing/query.go#L20
-      if (!res || res.Type !== 4) {
-        return callback(null, [])
-      }
-
-      const responses = res.Responses.map((r) => {
-        const peerInfo = new PeerInfo(PeerId.createFromB58String(r.ID))
-
-        if (r.Addrs) {
-          r.Addrs.forEach((addr) => {
-            const ma = multiaddr(addr)
-
-            peerInfo.multiaddrs.add(ma)
-          })
-        }
-
-        return peerInfo
+      let responses = []
+      res.forEach(result => {
+        // 4 = Provider
+        if (result.Type !== 4) return
+        result.Responses.forEach(response => {
+          const peerInfo = new PeerInfo(PeerId.createFromB58String(response.ID))
+
+          if (response.Addrs) {
+            response.Addrs.forEach((addr) => {
+              const ma = multiaddr(addr)
+              peerInfo.multiaddrs.add(ma)
+            })
+          }
+
+          responses.push(peerInfo)
+        })
       })
 
       callback(null, responses)

test/interface.spec.js

@@ -88,10 +88,6 @@ describe('interface-ipfs-core tests', () => {
         reason: 'FIXME checking what is exactly go-ipfs returning https://github.com/ipfs/go-ipfs/issues/3862#issuecomment-294168090'
       },
       // dht.findprovs
-      {
-        name: 'should provide from one node and find it through another node',
-        reason: 'FIXME go-ipfs endpoint doesn\'t conform with the others https://github.com/ipfs/go-ipfs/issues/5047'
-      },
       {
         name: 'should take options to override timeout config',
         reason: 'FIXME go-ipfs does not support a timeout option'