fix: open API spec

openapi/SwarmCommon.yaml

@@ -326,11 +326,11 @@ components:
                 $ref: "#/components/schemas/Address"
               fullNode:
                 type: boolean
-              p2pTransport:
+              underlay:
                 type: array
                 nullable: true
                 items:
-                  type: string
+                  $ref: "SwarmCommon.yaml#/components/schemas/MultiAddress"
 
 
     BlockListedPeers:

pkg/p2p/discover.go

@@ -5,11 +5,11 @@
 package p2p
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
-	"sort"
-	"strings"
+	"slices"
 
 	ma "github.com/multiformats/go-multiaddr"
 	madns "github.com/multiformats/go-multiaddr-dns"
@@ -36,9 +36,9 @@ func Discover(ctx context.Context, addr ma.Multiaddr, f func(ma.Multiaddr) (bool
 		return false, errors.New("non-resolvable API endpoint")
 	}
 
-	// sort addrs so that quic is tried first
-	sort.Slice(addrs, func(i, j int) bool {
-		return strings.Contains(addrs[i].String(), "/quic")
+	// Prioritize QUIC transport connections over the others.
+	slices.SortFunc(addrs, func(i, j ma.Multiaddr) int {
+		return cmp.Compare(i.String(), "/quic")
 	})
 
 	for _, addr := range addrs {