feat_: wakuext_enr (#5367)

eth-node/bridge/geth/waku.go

@@ -109,6 +109,11 @@ func (w *GethWakuWrapper) ListenAddresses() ([]string, error) {
 	return nil, errors.New("not available in WakuV1")
 }
 
+// ENR function only added for compatibility with waku V2
+func (w *GethWakuWrapper) ENR() (string, error) {
+	return "", errors.New("not available in WakuV1")
+}
+
 // PeerCount function only added for compatibility with waku V2
 func (w *GethWakuWrapper) DropPeer(peerID string) error {
 	return errors.New("not available in WakuV1")

eth-node/bridge/geth/wakuv2.go

@@ -283,6 +283,11 @@ func (w *gethWakuV2Wrapper) ListenAddresses() ([]string, error) {
 	return w.waku.ListenAddresses(), nil
 }
 
+// ENR function only added for compatibility with waku V2
+func (w *gethWakuV2Wrapper) ENR() (string, error) {
+	return w.waku.ENR()
+}
+
 func (w *gethWakuV2Wrapper) DropPeer(peerID string) error {
 	return w.waku.DropPeer(peerID)
 }

eth-node/types/waku.go

@@ -92,6 +92,8 @@ type Waku interface {
 
 	ListenAddresses() ([]string, error)
 
+	ENR() (string, error)
+
 	Peers() map[string]WakuV2Peer
 
 	StartDiscV5() error

protocol/messenger_peers.go

@@ -36,6 +36,10 @@ func (m *Messenger) ListenAddresses() ([]string, error) {
 	return m.transport.ListenAddresses()
 }
 
+func (m *Messenger) ENR() (string, error) {
+	return m.transport.ENR()
+}
+
 // Subscribe to a pubsub topic, passing an optional public key if the pubsub topic is protected
 func (m *Messenger) SubscribeToPubsubTopic(topic string, optPublicKey *ecdsa.PublicKey) error {
 	return m.transport.SubscribeToPubsubTopic(topic, optPublicKey)

protocol/transport/transport.go

@@ -651,6 +651,10 @@ func (t *Transport) ListenAddresses() ([]string, error) {
 	return t.waku.ListenAddresses()
 }
 
+func (t *Transport) ENR() (string, error) {
+	return t.waku.ENR()
+}
+
 func (t *Transport) AddStorePeer(address string) (peer.ID, error) {
 	return t.waku.AddStorePeer(address)
 }

services/ext/api.go

@@ -1484,6 +1484,10 @@ func (api *PublicAPI) ListenAddresses() ([]string, error) {
 	return api.service.messenger.ListenAddresses()
 }
 
+func (api *PublicAPI) Enr() (string, error) {
+	return api.service.messenger.ENR()
+}
+
 func (api *PublicAPI) ChangeIdentityImageShowTo(showTo settings.ProfilePicturesShowToType) error {
 	err := api.service.accountsDB.SaveSettingField(settings.ProfilePicturesShowTo, showTo)
 	if err != nil {

wakuv2/waku.go

@@ -1692,6 +1692,15 @@ func (w *Waku) ListenAddresses() []string {
 	return result
 }
 
+func (w *Waku) ENR() (string, error) {
+	enr := w.node.ENR()
+	if enr == nil {
+		return "", errors.New("enr not available")
+	}
+
+	return enr.String(), nil
+}
+
 func (w *Waku) SubscribeToPubsubTopic(topic string, pubkey *ecdsa.PublicKey) error {
 	topic = w.GetPubsubTopic(topic)