combine multiple bootstrap addrs into single peer info

core/bootstrap.go

@@ -203,10 +203,22 @@ func bootstrapConnect(ctx context.Context, ph host.Host, peers []peer.PeerInfo)
 }
 
 func toPeerInfos(bpeers []config.BootstrapPeer) []peer.PeerInfo {
-	var peers []peer.PeerInfo
+	pinfos := make(map[peer.ID]*peer.PeerInfo)
 	for _, bootstrap := range bpeers {
-		peers = append(peers, toPeerInfo(bootstrap))
+		pinfo, ok := pinfos[bootstrap.ID()]
+		if !ok {
+			pinfo = new(peer.PeerInfo)
+			pinfos[bootstrap.ID()] = pinfo
+			pinfo.ID = bootstrap.ID()
+		}
+		pinfo.Addrs = append(pinfo.Addrs, bootstrap.Multiaddr())
+	}
+
+	var peers []peer.PeerInfo
+	for _, pinfo := range pinfos {
+		peers = append(peers, *pinfo)
 	}
+
 	return peers
 }
 

core/bootstrap_test.go

@@ -1,9 +1,11 @@
 package core
 
 import (
+	"fmt"
 	"testing"
 
 	peer "github.com/ipfs/go-ipfs/p2p/peer"
+	config "github.com/ipfs/go-ipfs/repo/config"
 	testutil "github.com/ipfs/go-ipfs/util/testutil"
 )
 
@@ -23,3 +25,32 @@ func TestSubsetWhenMaxIsGreaterThanLengthOfSlice(t *testing.T) {
 		t.Fail()
 	}
 }
+
+func TestMultipleAddrsPerPeer(t *testing.T) {
+	var bsps []config.BootstrapPeer
+	for i := 0; i < 10; i++ {
+		pid, err := testutil.RandPeerID()
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		addr := fmt.Sprintf("/ip4/127.0.0.1/tcp/5001/ipfs/%s", pid.Pretty())
+		bsp1, err := config.ParseBootstrapPeer(addr)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		addr = fmt.Sprintf("/ip4/127.0.0.1/udp/5002/utp/ipfs/%s", pid.Pretty())
+		bsp2, err := config.ParseBootstrapPeer(addr)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		bsps = append(bsps, bsp1, bsp2)
+	}
+
+	pinfos := toPeerInfos(bsps)
+	if len(pinfos) != len(bsps)/2 {
+		t.Fatal("expected fewer peers")
+	}
+}