feat: enable /webrtc-direct listener

config/init.go

@@ -114,8 +114,10 @@ func addressesConfig() Addresses {
 			"/ip6/::/tcp/4001",
 			"/ip4/0.0.0.0/udp/4001/quic-v1",
 			"/ip4/0.0.0.0/udp/4001/quic-v1/webtransport",
+			"/ip4/0.0.0.0/udp/4002/webrtc-direct",
 			"/ip6/::/udp/4001/quic-v1",
 			"/ip6/::/udp/4001/quic-v1/webtransport",
+			"/ip6/::/udp/4002/webrtc-direct",
 		},
 		Announce:       []string{},
 		AppendAnnounce: []string{},

core/node/libp2p/transport.go

@@ -50,7 +50,7 @@ func Transports(tptConfig config.Transports) interface{} {
 			opts.Opts = append(opts.Opts, libp2p.Transport(webtransport.New))
 		}
 
-		if tptConfig.Network.WebRTCDirect.WithDefault(false) {
+		if tptConfig.Network.WebRTCDirect.WithDefault(!privateNetworkEnabled) {
 			if privateNetworkEnabled {
 				return opts, fmt.Errorf(
 					"WebRTC Direct transport does not support private networks, please disable Swarm.Transports.Network.WebRTCDirect",

docs/changelogs/v0.30.md

@@ -6,6 +6,7 @@
 
 - [Overview](#overview)
 - [🔦 Highlights](#-highlights)
+  - [WebRTC-Direct Transport enabled by default](#webrtc-direct-transport-enabled-by-default)
   - [Automated `ipfs version check`](#automated-ipfs-version-check)
   - [Version Suffix Configuration](#version-suffix-configuration)
 - [📝 Changelog](#-changelog)
@@ -15,6 +16,14 @@
 
 ### 🔦 Highlights
 
+#### WebRTC-Direct Transport enabled by default
+
+Kubo now ships with `/udp/4002/webrtc-direct` listener enabled by default.
+
+WebRTC Direct complements existing `/wss` (Secure WebSockets) and `/webtransport` transports. Unlike `/wss`, which requires a domain name and a CA-issued TLS certificate, WebRTC Direct works with IPs and can be enabled by default on all Kubo nodes.
+
+Learn more: [`Swarm.Transports.Network.WebRTCDirect`](https://github.com/ipfs/kubo/blob/master/docs/config.md#swarmtransportsnetworkwebrtcdirect)
+
 #### Automated `ipfs version check`
 
 Kubo now performs privacy-preserving version checks using the [libp2p identify protocol](https://github.com/libp2p/specs/blob/master/identify/README.md) on peers detected by the Amino DHT client.

docs/config.md

@@ -2144,7 +2144,7 @@ Configuration section for libp2p _network_ transports. Transports enabled in
 this section will be used for dialing. However, to receive connections on these
 transports, multiaddrs for these transports must be added to `Addresses.Swarm`.
 
-Supported transports are: QUIC, TCP, WS, Relay and WebTransport.
+Supported transports are: QUIC, TCP, WS, Relay, WebTransport and WebRTCDirect.
 
 Each field in this section is a `flag`.
 
@@ -2195,8 +2195,8 @@ Default: Enabled
 Type: `flag`
 
 Listen Addresses:
-* /ip4/0.0.0.0/udp/4001/quic-v1 (default)
-* /ip6/::/udp/4001/quic-v1 (default)
+- `/ip4/0.0.0.0/udp/4001/quic-v1` (default)
+- `/ip6/::/udp/4001/quic-v1` (default)
 
 #### `Swarm.Transports.Network.Relay`
 
@@ -2243,33 +2243,43 @@ Default: Enabled
 
 Type: `flag`
 
-#### `Swarm.Transports.Network.WebRTCDirect`
+Listen Addresses:
+- `/ip4/0.0.0.0/udp/4001/quic-v1/webtransport` (default)
+- `/ip6/::/udp/4001/quic-v1/webtransport` (default)
 
-**Experimental:** the support for WebRTC Direct is currently experimental.
-This feature was introduced in [`go-libp2p@v0.32.0`](https://github.com/libp2p/go-libp2p/releases/tag/v0.32.0).
+#### `Swarm.Transports.Network.WebRTCDirect`
 
 [WebRTC Direct](https://github.com/libp2p/specs/blob/master/webrtc/webrtc-direct.md)
 is a transport protocol that provides another way for browsers to
 connect to the rest of the libp2p network. WebRTC Direct allows for browser
 nodes to connect to other nodes without special configuration, such as TLS
 certificates. This can be useful for browser nodes that do not yet support
-[WebTransport](https://blog.libp2p.io/2022-12-19-libp2p-webtransport/).
+[WebTransport](https://blog.libp2p.io/2022-12-19-libp2p-webtransport/),
+which is still relatively new and has [known issues](https://github.com/libp2p/js-libp2p/issues/2572).
 
 Enabling this transport allows Kubo node to act on `/udp/4002/webrtc-direct`
 listeners defined in `Addresses.Swarm`, `Addresses.Announce` or
-`Addresses.AppendAnnounce`. At the moment, WebRTC Direct doesn't support listening on the same port as a QUIC or WebTransport listener
+`Addresses.AppendAnnounce`.
+
+> [!IMPORTANT]
+> At the moment, WebRTC Direct doesn't support listening on the same port as a QUIC or WebTransport listener, and Kubo uses 4002 for it.
 
-**NOTE:** at the moment, WebRTC Direct cannot be used to connect to a browser
-node to a node that is behind a NAT or firewall.
-This requires using normal
-[WebRTC](https://github.com/libp2p/specs/blob/master/webrtc/webrtc.md),
-which is currently being worked on in
-[go-libp2p#2009](https://github.com/libp2p/go-libp2p/issues/2009).
+> [!NOTE]
+> WebRTC Direct is browser-to-node. It cannot be used to connect a browser
+> node to a node that is behind a NAT or firewall.
+> This requires using normal
+> [WebRTC](https://github.com/libp2p/specs/blob/master/webrtc/webrtc.md),
+> which is currently being worked on in
+> [go-libp2p#2009](https://github.com/libp2p/go-libp2p/issues/2009).
 
-Default: Disabled
+Default: Enabled
 
 Type: `flag`
 
+Listen Addresses:
+- `/ip4/0.0.0.0/udp/4002/webrtc-direct` (default)
+- `/ip6/::/udp/4001/webrtc-direct` (default)
+
 ### `Swarm.Transports.Security`
 
 Configuration section for libp2p _security_ transports. Transports enabled in

go.mod

@@ -18,7 +18,7 @@ require (
 	github.com/hashicorp/go-version v1.6.0
 	github.com/ipfs-shipyard/nopfs v0.0.12
 	github.com/ipfs-shipyard/nopfs/ipfs v0.13.2-0.20231027223058-cde3b5ba964c
-	github.com/ipfs/boxo v0.21.1-0.20240730141506-8e51658f8a1b
+	github.com/ipfs/boxo v0.20.0
 	github.com/ipfs/go-block-format v0.2.0
 	github.com/ipfs/go-cid v0.4.1
 	github.com/ipfs/go-cidutil v0.1.0
@@ -48,7 +48,7 @@ require (
 	github.com/jbenet/goprocess v0.1.4
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/libp2p/go-doh-resolver v0.4.0
-	github.com/libp2p/go-libp2p v0.35.4
+	github.com/libp2p/go-libp2p v0.35.1-0.20240726083353-205f7be11544
 	github.com/libp2p/go-libp2p-http v0.5.0
 	github.com/libp2p/go-libp2p-kad-dht v0.25.2
 	github.com/libp2p/go-libp2p-kbucket v0.6.3

go.sum

@@ -330,8 +330,8 @@ github.com/ipfs-shipyard/nopfs/ipfs v0.13.2-0.20231027223058-cde3b5ba964c h1:7Uy
 github.com/ipfs-shipyard/nopfs/ipfs v0.13.2-0.20231027223058-cde3b5ba964c/go.mod h1:6EekK/jo+TynwSE/ZOiOJd4eEvRXoavEC3vquKtv4yI=
 github.com/ipfs/bbloom v0.0.4 h1:Gi+8EGJ2y5qiD5FbsbpX/TMNcJw8gSqr7eyjHa4Fhvs=
 github.com/ipfs/bbloom v0.0.4/go.mod h1:cS9YprKXpoZ9lT0n/Mw/a6/aFV6DTjTLYHeA+gyqMG0=
-github.com/ipfs/boxo v0.21.1-0.20240730141506-8e51658f8a1b h1:vH+ly+ghScnm4fDTsFnRkWIqZ0Vux6U3aOzPc3bQsOM=
-github.com/ipfs/boxo v0.21.1-0.20240730141506-8e51658f8a1b/go.mod h1:NmweAYeY1USOaJJxouy7DLr/Y5M8UBSsCI2KRivO+TY=
+github.com/ipfs/boxo v0.20.0 h1:umUl7q1v5g5AX8FPLTnZBvvagLmT+V0Tt61EigP81ec=
+github.com/ipfs/boxo v0.20.0/go.mod h1:mwttn53Eibgska2DhVIj7ln3UViq7MVHRxOMb+ehSDM=
 github.com/ipfs/go-bitfield v1.1.0 h1:fh7FIo8bSwaJEh6DdTWbCeZ1eqOaOkKFI74SCnsWbGA=
 github.com/ipfs/go-bitfield v1.1.0/go.mod h1:paqf1wjq/D2BBmzfTVFlJQ9IlFOZpg422HL0HqsGWHU=
 github.com/ipfs/go-bitswap v0.11.0 h1:j1WVvhDX1yhG32NTC9xfxnqycqYIlhzEzLXG/cU1HyQ=
@@ -508,8 +508,8 @@ github.com/libp2p/go-flow-metrics v0.0.1/go.mod h1:Iv1GH0sG8DtYN3SVJ2eG221wMiNpZ
 github.com/libp2p/go-flow-metrics v0.0.3/go.mod h1:HeoSNUrOJVK1jEpDqVEiUOIXqhbnS27omG0uWU5slZs=
 github.com/libp2p/go-flow-metrics v0.1.0 h1:0iPhMI8PskQwzh57jB9WxIuIOQ0r+15PChFGkx3Q3WM=
 github.com/libp2p/go-flow-metrics v0.1.0/go.mod h1:4Xi8MX8wj5aWNDAZttg6UPmc0ZrnFNsMtpsYUClFtro=
-github.com/libp2p/go-libp2p v0.35.4 h1:FDiBUYLkueFwsuNJUZaxKRdpKvBOWU64qQPL768bSeg=
-github.com/libp2p/go-libp2p v0.35.4/go.mod h1:RKCDNt30IkFipGL0tl8wQW/3zVWEGFUZo8g2gAKxwjU=
+github.com/libp2p/go-libp2p v0.35.1-0.20240726083353-205f7be11544 h1:2ivyU6vXAsqOZ0+V54CibsXoxXJ43F8G4r+FfWEHx5Q=
+github.com/libp2p/go-libp2p v0.35.1-0.20240726083353-205f7be11544/go.mod h1:M/fCHPPkWjectocXCOUua4Z2lSr2cjQNByVVuxWPwXI=
 github.com/libp2p/go-libp2p-asn-util v0.4.1 h1:xqL7++IKD9TBFMgnLPZR6/6iYhawHKHl950SO9L6n94=
 github.com/libp2p/go-libp2p-asn-util v0.4.1/go.mod h1:d/NI6XZ9qxw67b4e+NgpQexCIiFYJjErASrYW4PFDN8=
 github.com/libp2p/go-libp2p-core v0.2.4/go.mod h1:STh4fdfa5vDYr0/SzYYeqnt+E6KfEV5VxfIrm0bcI0g=

test/cli/transports_test.go

@@ -90,23 +90,27 @@ func TestTransports(t *testing.T) {
 		nodes.ForEachPar(func(n *harness.Node) {
 			n.UpdateConfig(func(cfg *config.Config) {
 				cfg.Addresses.Swarm = []string{"/ip4/127.0.0.1/udp/0/quic-v1"}
-				cfg.Swarm.Transports.Network.QUIC = config.True
 				cfg.Swarm.Transports.Network.TCP = config.False
+				cfg.Swarm.Transports.Network.QUIC = config.True
+				cfg.Swarm.Transports.Network.WebTransport = config.False
+				cfg.Swarm.Transports.Network.WebRTCDirect = config.False
 			})
 		})
 		disableRouting(nodes)
 		nodes.StartDaemons().Connect()
 		runTests(nodes)
 	})
 
-	t.Run("QUIC", func(t *testing.T) {
+	t.Run("QUIC+Webtransport", func(t *testing.T) {
 		t.Parallel()
 		nodes := harness.NewT(t).NewNodes(5).Init()
 		nodes.ForEachPar(func(n *harness.Node) {
 			n.UpdateConfig(func(cfg *config.Config) {
 				cfg.Addresses.Swarm = []string{"/ip4/127.0.0.1/udp/0/quic-v1/webtransport"}
+				cfg.Swarm.Transports.Network.TCP = config.False
 				cfg.Swarm.Transports.Network.QUIC = config.True
 				cfg.Swarm.Transports.Network.WebTransport = config.True
+				cfg.Swarm.Transports.Network.WebRTCDirect = config.False
 			})
 		})
 		disableRouting(nodes)