feat: enable hole-punching by default

.circleci/main.yml

@@ -245,7 +245,7 @@ jobs:
           command: |
             npm init -y
             npm install ipfs@^0.61.0
-            npm install ipfs-interop@^8.0.0
+            npm install ipfs-interop@^8.0.10
             npm install mocha-circleci-reporter@0.0.3
           working_directory: ~/ipfs/go-ipfs/interop
       - run:

core/node/libp2p/relay.go

@@ -69,9 +69,10 @@ func AutoRelay(staticRelays []string, peerChan <-chan peer.AddrInfo) func() (opt
 
 func HolePunching(flag config.Flag, hasRelayClient bool) func() (opts Libp2pOpts, err error) {
 	return func() (opts Libp2pOpts, err error) {
-		if flag.WithDefault(false) {
+		if flag.WithDefault(true) {
 			if !hasRelayClient {
-				log.Fatal("To enable `Swarm.EnableHolePunching` requires `Swarm.RelayClient.Enabled` to be enabled.")
+				log.Fatal("Failed to enable `Swarm.EnableHolePunching`, it requires `Swarm.RelayClient.Enabled` to be true.")
+				return
 			}
 			opts.Opts = append(opts.Opts, libp2p.EnableHolePunching())
 		}

docs/config.md

@@ -1383,7 +1383,7 @@ to [upgrade to a direct connection](https://github.com/libp2p/specs/blob/master/
 through a NAT/firewall whenever possible.
 This feature requires `Swarm.RelayClient.Enabled` to be set to `true`.
 
-Default: `false`
+Default: `true`
 
 Type: `flag`