Fix WASM build: extract platform-specific WebRTC API creation

clientcore/consumer.go

@@ -18,7 +18,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/pion/transport/v3/stdnet"
 	"github.com/pion/webrtc/v4"
 
 	"github.com/getlantern/broflake/common"
@@ -61,28 +60,12 @@ func NewConsumerWebRTC(options *WebRTCOptions, wg *sync.WaitGroup) *WorkerFSM {
 				},
 			}
 
-			// // Example custom DTLS settings
-			// settingEngine := &webrtc.SettingEngine{}
-			// settingEngine.SetDTLSEllipticCurves(elliptic.P256, elliptic.P384, elliptic.X25519)
-			// webrtcAPI := webrtc.NewAPI(webrtc.WithSettingEngine(*settingEngine))
-			// peerConnection, err := webrtcAPI.NewPeerConnection(config)
-
-			// Set the network interface for WebRTC. If none is provided, use the default stdnet.Net
-			// that webrtc would use anyway.
-			rtcNet := options.Net
-			if rtcNet == nil {
-				var err error
-				rtcNet, err = stdnet.NewNet()
-				if err != nil {
-					common.Debugf("Error initializing stdnet.Net: %v", err)
-					return 0, []any{}
-				}
+			api, err := newWebRTCAPI(options.Net)
+			if err != nil {
+				common.Debugf("Error creating WebRTC API: %v", err)
+				return 0, []any{}
 			}
 
-			settingEngine := &webrtc.SettingEngine{}
-			settingEngine.SetNet(rtcNet)
-			api := webrtc.NewAPI(webrtc.WithSettingEngine(*settingEngine))
-
 			// Construct the RTCPeerConnection
 			peerConnection, err := api.NewPeerConnection(config)
 			if err != nil {

clientcore/settings.go

@@ -24,7 +24,8 @@ type WebRTCOptions struct {
 	Patience          time.Duration
 	ErrorBackoff      time.Duration
 	ConsumerSessionID string
-	Net               transport.Net
+	// 'Net' is currently only respected by the WebRTC *consumer*, and it won't work for Wasm builds!
+	Net transport.Net
 }
 
 func NewDefaultWebRTCOptions() *WebRTCOptions {

clientcore/ui_default_impl.go

@@ -9,7 +9,7 @@ import (
 
 type UIImpl struct {
 	UI
-	BroflakeEngine       *BroflakeEngine
+	BroflakeEngine         *BroflakeEngine
 	OnConnectionChangeFunc ConnectionChangeFunc
 }
 

clientcore/webrtc_api.go

@@ -0,0 +1,22 @@
+//go:build !wasm
+
+package clientcore
+
+import (
+	"github.com/pion/transport/v3"
+	"github.com/pion/transport/v3/stdnet"
+	"github.com/pion/webrtc/v4"
+)
+
+func newWebRTCAPI(net transport.Net) (*webrtc.API, error) {
+	if net == nil {
+		var err error
+		net, err = stdnet.NewNet()
+		if err != nil {
+			return nil, err
+		}
+	}
+	se := &webrtc.SettingEngine{}
+	se.SetNet(net)
+	return webrtc.NewAPI(webrtc.WithSettingEngine(*se)), nil
+}

clientcore/webrtc_api_js.go

@@ -0,0 +1,13 @@
+//go:build wasm
+
+package clientcore
+
+import (
+	"github.com/pion/transport/v3"
+	"github.com/pion/webrtc/v4"
+)
+
+func newWebRTCAPI(_ transport.Net) (*webrtc.API, error) {
+	panic("Congratulations, you found the unimplemented WebRTC consumer transport injector for Wasm builds!")
+	return webrtc.NewAPI(), nil
+}

common/version.go

@@ -1,4 +1,4 @@
 package common
 
 // Must be a valid semver
-const Version = "v2.1.6"
+const Version = "v2.1.7"