create pulseaudio sink, fixes #267.

.docker/base/Dockerfile

@@ -79,7 +79,9 @@ RUN set -eux; \
         # Japanese fonts
         fonts-takao-mincho \
         # Chinese fonts
-        fonts-wqy-zenhei; \
+        fonts-wqy-zenhei xfonts-intl-chinese xfonts-wqy \
+        # Korean fonts
+        fonts-wqy-microhei; \
     #
     # create a non-root user
     groupadd --gid $USER_GID $USERNAME; \

.docker/base/Dockerfile.arm

@@ -85,7 +85,9 @@ RUN set -eux; \
         # Japanese fonts
         fonts-takao-mincho \
         # Chinese fonts
-        fonts-wqy-zenhei; \
+        fonts-wqy-zenhei xfonts-intl-chinese xfonts-wqy \
+        # Korean fonts
+        fonts-wqy-microhei; \
     #
     # create a non-root user
     groupadd --gid $USER_GID $USERNAME; \

.docker/base/Dockerfile.intel

@@ -88,7 +88,9 @@ RUN set -eux; \
         # Japanese fonts
         fonts-takao-mincho \
         # Chinese fonts
-        fonts-wqy-zenhei; \
+        fonts-wqy-zenhei xfonts-intl-chinese xfonts-wqy \
+        # Korean fonts
+        fonts-wqy-microhei; \
     #
     # create a non-root user
     groupadd --gid $USER_GID $USERNAME; \
@@ -131,6 +133,7 @@ ENV DISPLAY=:99.0
 ENV NEKO_PASSWORD=neko
 ENV NEKO_PASSWORD_ADMIN=admin
 ENV NEKO_BIND=:8080
+ENV NEKO_HWENC=VAAPI
 ENV RENDER_GID=
 
 #

.docker/base/Dockerfile.nvidia

@@ -97,7 +97,9 @@ RUN set -eux; \
         # Japanese fonts
         fonts-takao-mincho \
         # Chinese fonts
-        fonts-wqy-zenhei; \
+        fonts-wqy-zenhei xfonts-intl-chinese xfonts-wqy \
+        # Korean fonts
+        fonts-wqy-microhei; \
     #
     # create a non-root user
     groupadd --gid $USER_GID $USERNAME; \

.docker/base/default.pa

@@ -1,5 +1,8 @@
 #!/usr/bin/pulseaudio -nF
 
+### Create virtual output device sink
+load-module module-null-sink sink_name=audio_output sink_properties=device.description="Virtual\ Audio\ Output"
+
 # Allow pulse audio to be accessed via TCP (from localhost only), to allow other users to access the virtual devices
 load-module module-native-protocol-unix socket=/tmp/pulseaudio.socket auth-anonymous=1
 

.docker/kde/Dockerfile

@@ -15,6 +15,11 @@ RUN set -eux; apt-get update; \
     apt-get clean -y; \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/*
 
+#
+# disable autolock
+RUN kwriteconfig5 --file /home/neko/.config/kscreenlockerrc --group Daemon --key Autolock false; \
+    chown neko:neko /home/neko/.config/kscreenlockerrc
+
 #
 # copy configuation files
 COPY supervisord.conf /etc/neko/supervisord/kde.conf

.docker/rebuild-server

@@ -17,5 +17,9 @@ fi
 
 docker run --rm -it \
   -v "${PWD}/../server:/src" \
-  --entrypoint="go" \
+  -e GIT_COMMIT=`git rev-parse --short HEAD` \
-  neko_dev_server build -o "bin/neko" "cmd/neko/main.go"
+  -e GIT_BRANCH=`git rev-parse --symbolic-full-name --abbrev-ref HEAD` \
+  -e GIT_DIRTY=`git diff-index --quiet HEAD -- || echo "✗-"` \
+  --entrypoint="bash" \
+  --workdir="/src" \
+  neko_dev_server ./build

.docker/serve-client

@@ -16,7 +16,7 @@ if [ ! -d "${PWD}/../client/node_modules" ] || [ "$1" == "-i" ]; then
     -v "${PWD}/../client:/app" \
     --workdir="/app" \
     --entrypoint="npm" \
-    node:14-buster-slim install
+    node:18-bullseye-slim install
 fi
 
 docker run --rm -it \
@@ -25,5 +25,5 @@ docker run --rm -it \
   -e "VUE_APP_SERVER_PORT=${SERVER_PORT}" \
   --workdir="/app" \
   --entrypoint="npm" \
-  node:14-buster-slim run serve
+  node:18-bullseye-slim run serve
   

client/src/app.vue

@@ -1,17 +1,22 @@
 <template>
-  <div id="neko" :class="[side ? 'expanded' : '']">
+  <div id="neko" :class="[!videoOnly && side ? 'expanded' : '']">
     <template v-if="!$client.supported">
       <neko-unsupported />
     </template>
     <template v-else>
       <main class="neko-main">
-        <div v-if="!hideControls" class="header-container">
+        <div v-if="!videoOnly" class="header-container">
           <neko-header />
         </div>
         <div class="video-container">
-          <neko-video ref="video" :hideControls="hideControls" @control-attempt="controlAttempt" />
+          <neko-video
+            ref="video"
+            :hideControls="hideControls"
+            :extraControls="isEmbedMode"
+            @control-attempt="controlAttempt"
+          />
         </div>
-        <div v-if="!hideControls" class="room-container">
+        <div v-if="!videoOnly" class="room-container">
           <neko-members />
           <div class="room-menu">
             <div class="settings">
@@ -26,11 +31,11 @@
           </div>
         </div>
       </main>
-      <neko-side v-if="!hideControls && side" />
+      <neko-side v-if="!videoOnly && side" />
       <neko-connect v-if="!connected" />
       <neko-about v-if="about" />
       <notifications
-        v-if="!hideControls"
+        v-if="!videoOnly"
         group="neko"
         position="top left"
         style="top: 50px; pointer-events: none"
@@ -176,10 +181,22 @@
 
     shakeKbd = false
 
-    get hideControls() {
+    get isCastMode() {
       return !!new URL(location.href).searchParams.get('cast')
     }
 
+    get isEmbedMode() {
+      return !!new URL(location.href).searchParams.get('embed')
+    }
+
+    get hideControls() {
+      return this.isCastMode
+    }
+
+    get videoOnly() {
+      return this.isCastMode || this.isEmbedMode
+    }
+
     @Watch('hideControls', { immediate: true })
     onHideControls(enabled: boolean) {
       if (enabled) {

client/src/components/video.vue

@@ -22,25 +22,25 @@
           @mouseenter.stop.prevent="onMouseEnter"
           @mouseleave.stop.prevent="onMouseLeave"
         />
-        <div v-if="!playing && playable" class="player-overlay" @click.stop.prevent="toggle">
+        <div v-if="!playing && playable" class="player-overlay" @click.stop.prevent="playAndUnmute">
           <i class="fas fa-play-circle" />
         </div>
-        <div v-if="mutedOverlay && muted" class="player-overlay" @click.stop.prevent="unmute">
+        <div v-else-if="mutedOverlay && muted" class="player-overlay" @click.stop.prevent="unmute">
           <i class="fas fa-volume-up" />
         </div>
         <div ref="aspect" class="player-aspect" />
       </div>
-      <ul v-if="!fullscreen" class="video-menu top">
+      <ul v-if="!fullscreen && !hideControls" class="video-menu top">
         <li><i @click.stop.prevent="requestFullscreen" class="fas fa-expand"></i></li>
         <li v-if="admin"><i @click.stop.prevent="openResolution" class="fas fa-desktop"></i></li>
-        <li :class="hideControls || 'request-control'">
+        <li v-if="!implicitHosting" :class="extraControls || 'extra-control'">
           <i
             :class="[hosted && !hosting ? 'disabled' : '', !hosted && !hosting ? 'faded' : '', 'fas', 'fa-keyboard']"
             @click.stop.prevent="toggleControl"
           />
         </li>
       </ul>
-      <ul v-if="!fullscreen" class="video-menu bottom">
+      <ul v-if="!fullscreen && !hideControls" class="video-menu bottom">
         <li v-if="hosting && (!clipboard_read_available || !clipboard_write_available)">
           <i @click.stop.prevent="openClipboard" class="fas fa-clipboard"></i>
         </li>
@@ -106,12 +106,12 @@
             }
           }
 
-          &.request-control {
+          /* usually extra controls are only shown on mobile */
+          &.extra-control {
             display: none;
           }
-
           @media (max-width: 768px) {
-            &.request-control {
+            &.extra-control {
               display: inline-block;
             }
           }
@@ -223,13 +223,15 @@
     @Ref('resolution') readonly _resolution!: Resolution
     @Ref('clipboard') readonly _clipboard!: Clipboard
 
+    // all controls are hidden (e.g. for cast mode)
     @Prop(Boolean) readonly hideControls!: boolean
+    // extra controls are shown (e.g. for embed mode)
+    @Prop(Boolean) readonly extraControls!: boolean
 
     private keyboard = GuacamoleKeyboard()
     private observer = new ResizeObserver(this.onResize.bind(this))
     private focused = false
     private fullscreen = false
-    private startsMuted = true
     private mutedOverlay = true
 
     get admin() {
@@ -361,7 +363,6 @@
     onMutedChanged(muted: boolean) {
       if (this._video && this._video.muted != muted) {
         this._video.muted = muted
-        this.startsMuted = muted
 
         if (!muted) {
           this.mutedOverlay = false
@@ -384,9 +385,29 @@
     }
 
     @Watch('playing')
-    onPlayingChanged(playing: boolean) {
+    async onPlayingChanged(playing: boolean) {
       if (this._video && this._video.paused && playing) {
-        this.play()
+        // if autoplay is disabled, play() will throw an error
+        // and we need to properly save the state otherwise we
+        // would be thinking we're playing when we're not
+        try {
+          await this._video.play()
+        } catch (err: any) {
+          if (!this._video.muted) {
+            // video.play() can fail if audio is set due restrictive
+            // browsers autoplay policy -> retry with muted audio
+            try {
+              this.$accessor.video.setMuted(true)
+              this._video.muted = true
+              await this._video.play()
+            } catch (err: any) {
+              // if it still fails, we're not playing anything
+              this.$accessor.video.pause()
+            }
+          } else {
+            this.$accessor.video.pause()
+          }
+        }
       }
 
       if (this._video && !this._video.paused && !playing) {
@@ -424,11 +445,6 @@
       this._video.addEventListener('canplaythrough', () => {
         this.$accessor.video.setPlayable(true)
         if (this.autoplay) {
-          // start as muted due to restrictive browsers autoplay policy
-          if (this.startsMuted && (!document.hasFocus() || !this.$accessor.active)) {
-            this.$accessor.video.setMuted(true)
-          }
-
           this.$nextTick(() => {
             this.$accessor.video.play()
           })
@@ -560,6 +576,11 @@
       }
     }
 
+    playAndUnmute() {
+      this.$accessor.video.play()
+      this.$accessor.video.setMuted(false)
+    }
+
     unmute() {
       this.$accessor.video.setMuted(false)
     }

client/src/neko/base.ts

@@ -203,11 +203,12 @@ export abstract class BaseClient extends EventEmitter<BaseEvents> {
       return
     }
 
-    this._peer = new RTCPeerConnection()
     if (lite !== true) {
       this._peer = new RTCPeerConnection({
         iceServers: servers,
       })
+    } else {
+      this._peer = new RTCPeerConnection()
     }
 
     this._peer.onconnectionstatechange = () => {
@@ -251,11 +252,28 @@ export abstract class BaseClient extends EventEmitter<BaseEvents> {
 
     this._peer.ontrack = this.onTrack.bind(this)
 
+    this._peer.onicecandidate = (event: RTCPeerConnectionIceEvent) => {
+      if (!event.candidate) {
+        this.emit('debug', `sent all local ICE candidates`)
+        return
+      }
+
+      const init = event.candidate.toJSON()
+      this.emit('debug', `sending local ICE candidate`, init)
+
+      this._ws!.send(
+        JSON.stringify({
+          event: EVENT.SIGNAL.CANDIDATE,
+          data: JSON.stringify(init),
+        }),
+      )
+    }
+
     this._peer.onnegotiationneeded = async () => {
       this.emit('warn', `negotiation is needed`)
 
       const d = await this._peer!.createOffer()
-      this._peer!.setLocalDescription(d)
+      await this._peer!.setLocalDescription(d)
 
       this._ws!.send(
         JSON.stringify({
@@ -277,10 +295,10 @@ export abstract class BaseClient extends EventEmitter<BaseEvents> {
       return
     }
 
-    this._peer.setRemoteDescription({ type: 'offer', sdp })
+    await this._peer.setRemoteDescription({ type: 'offer', sdp })
 
     for (const candidate of this._candidates) {
-      this._peer.addIceCandidate(candidate)
+      await this._peer.addIceCandidate(candidate)
     }
     this._candidates = []
 
@@ -310,7 +328,7 @@ export abstract class BaseClient extends EventEmitter<BaseEvents> {
       return
     }
 
-    this._peer.setRemoteDescription({ type: 'answer', sdp })
+    await this._peer.setRemoteDescription({ type: 'answer', sdp })
   }
 
   private async onMessage(e: MessageEvent) {

docs/changelog.md

@@ -6,16 +6,23 @@
 - Added AV1 tag, metadata and pipeline. Unfortunately does not work yet, since the encoding is way too slow (by @mbattista).
 - Added `m1k1o/neko:kde` tag as an alternative to `m1k1o/neko:xfce`.
 - New VirtualGL version 3.1 was released, adding support for Chromium browsers to use Nvidia GPU acceleration!
+- Added `?embed=1` parameter to the URL, which will hide the sidebar and the top bar, so that it can be embedded in other websites.
 
 ### Bugs
 - Fixed TCP mux occasional freeze by adding write buffer to it.
 - Fixed stereo problem in chromium-based browsers, where it was only as mono by adding `stereo=1` to opus SDP to clients answer.
 - Fixed keysym mapping for unknown keycodes, which was causing some key combinations to not work on some keyboards.
 - Fixed a bug where `max_fps=0` would lead to an invalid pipeline.
+- Fixed client side webrtc ICE gathering, so that neko can be used without exposed ports, only with STUN and TURN servers.
+- Fixed play state synchronization, when autoplay is disabled.
 
 ### Misc
 - Updated to go 1.19 and Node 18, removed go-events as dependency (by @mbattista).
 - Added adaptive framerate which now streams in the framerate you selected from the dropdown.
+- Improved chinese and korean characters support.
+- Disabled autolock for kde, so that it does not lock the screen when you are not using it.
+- Refactored autoplay, so that it will start playing audio, if it's allowed by the browser (by @urbanekpj).
+- Renamed pulseaudio sink from `auto_null` to `audio_output`, because it was ignored by KDE.
 
 ## [n.eko v2.7](https://github.com/m1k1o/neko/releases/tag/v2.7)
 

docs/getting-started/README.md

@@ -162,6 +162,57 @@ services:
   "RestoreOnStartup": 1,
 ```
 
+### Nvidia GPU acceleration
+
+You need to have nvidia-docker installed, start the container with `--gpus all` flag and use images built for nvidia (see above).
+
+```bash
+docker run -d --gpus all \
+  -p 8080:8080 \
+  -p 56000-56100:56000-56100/udp \
+  -e NEKO_SCREEN=1920x1080@30 \
+  -e NEKO_PASSWORD=neko \
+  -e NEKO_PASSWORD_ADMIN=admin \
+  -e NEKO_EPR=56000-56100 \
+  -e NEKO_NAT1TO1=192.168.1.10 \
+  -e NEKO_ICELITE=1 \
+  --shm-size=2gb \
+  --cap-add=SYS_ADMIN \
+  --name neko \
+  ghcr.io/m1k1o/neko/nvidia-google-chrome:latest
+```
+
+If you want to use docker-compose, you can use this example:
+
+```yaml
+version: "3.4"
+services:
+  neko:
+    image: "ghcr.io/m1k1o/neko/nvidia-google-chrome:latest"
+    restart: "unless-stopped"
+    shm_size: "2gb"
+    ports:
+      - "8080:8080"
+      - "56000-56100:56000-56100/udp"
+    cap_add:
+      - SYS_ADMIN
+    environment:
+      NEKO_SCREEN: '1920x1080@30'
+      NEKO_PASSWORD: neko
+      NEKO_PASSWORD_ADMIN: admin
+      NEKO_EPR: 56000-56100
+      NEKO_NAT1TO1: 192.168.1.10
+    deploy:
+      resources:
+        reservations:
+          devices:
+            - driver: nvidia
+              count: 1
+              capabilities: [gpu]
+```
+
+Note, currently only browser GPU acceleration is supported, not encoding.
+
 ### Want to use VPN for your n.eko browsing?
 - Check this out: https://github.com/m1k1o/neko-vpn
 
@@ -179,6 +230,7 @@ services:
   - Adding `?pwd=<password>` will prefill password.
   - Adding `?usr=<display-name>` will prefill username.
   - Adding `?cast=1` will hide all control and show only video.
+  - Adding `?embed=1` will hide most additional components and show only video.
   - e.g. `http(s)://<URL:Port>/?pwd=neko&usr=guest&cast=1`
 
 ### Screen size

docs/getting-started/configuration.md

@@ -25,7 +25,7 @@ nat1to1: <ip>
   - Control protection means, users can gain control only if at least one admin is in the room.
   - e.g. `false`
 #### `NEKO_IMPLICIT_CONTROL`:
-  - If enabled members can gain control implicitly, they don't needd to request control.
+  - If enabled members can gain control implicitly, they don't need to request control.
   - e.g. `false`
 #### `NEKO_LOCKS`:
   - Resources, that will be locked when starting, separated by whitespace.
@@ -167,7 +167,7 @@ Flags:
       --cert string                 path to the SSL cert used to secure the neko server
       --control_protection          control protection means, users can gain control only if at least one admin is in the room
       --cors strings                list of allowed origins for CORS (default [*])
-      --device string               audio device to capture (default "auto_null.monitor")
+      --device string               audio device to capture (default "audio_output.monitor")
       --display string              XDisplay to capture (default ":99.0")
       --epr string                  limits the pool of ephemeral ports that ICE UDP connections can allocate from (default "59000-59100")
       --file_transfer_enabled       enable file transfer feature (default false)

server/build

@@ -3,8 +3,22 @@
 set -ex
 
 BUILD_TIME=`date -u +'%Y-%m-%dT%H:%M:%SZ'`
-GIT_COMMIT=`git rev-parse --short HEAD`
-GIT_BRANCH=`git rev-parse --symbolic-full-name --abbrev-ref HEAD`
-GIT_DIRTY=`git diff-index --quiet HEAD -- || echo "✗-"`
 
-go build -o bin/neko -ldflags "-s -X 'm1k1o/neko.buildDate=${BUILD_TIME}' -X 'm1k1o/neko.gitCommit=${GIT_DIRTY}${GIT_COMMIT}' -X 'm1k1o/neko.gitBranch=${GIT_BRANCH}'" -i cmd/neko/main.go
+#
+# set git build variables if git exists
+if git status > /dev/null 2>&1 && [ -z $GIT_COMMIT ] && [ -z $GIT_BRANCH ] && [ -z $GIT_DIRTY ];
+then
+    GIT_COMMIT=`git rev-parse --short HEAD`
+    GIT_BRANCH=`git rev-parse --symbolic-full-name --abbrev-ref HEAD`
+    GIT_DIRTY=`git diff-index --quiet HEAD -- || echo "✗-"`
+fi
+
+go build \
+    -o bin/neko \
+    -ldflags "
+        -s -w
+        -X 'm1k1o/neko.buildDate=${BUILD_TIME}'
+        -X 'm1k1o/neko.gitCommit=${GIT_DIRTY}${GIT_COMMIT}'
+        -X 'm1k1o/neko.gitBranch=${GIT_BRANCH}'
+    " \
+    cmd/neko/main.go;

server/internal/config/capture.go

@@ -92,7 +92,7 @@ func (Capture) Init(cmd *cobra.Command) error {
 	// audio
 	//
 
-	cmd.PersistentFlags().String("device", "auto_null.monitor", "audio device to capture")
+	cmd.PersistentFlags().String("device", "audio_output.monitor", "audio device to capture")
 	if err := viper.BindPFlag("device", cmd.PersistentFlags().Lookup("device")); err != nil {
 		return err
 	}

server/internal/session/session.go

@@ -131,6 +131,17 @@ func (session *Session) SignalLocalAnswer(sdp string) error {
 	})
 }
 
+func (session *Session) SignalLocalCandidate(data string) error {
+	if session.socket == nil {
+		return nil
+	}
+	session.logger.Info().Msg("signal update - LocalCandidate")
+	return session.socket.Send(&message.SignalCandidate{
+		Event: event.SIGNAL_CANDIDATE,
+		Data:  data,
+	})
+}
+
 func (session *Session) SignalRemoteOffer(sdp string) error {
 	if session.peer == nil {
 		return nil
@@ -154,14 +165,12 @@ func (session *Session) SignalRemoteAnswer(sdp string) error {
 	return session.peer.SetAnswer(sdp)
 }
 
-func (session *Session) SignalCandidate(data string) error {
+func (session *Session) SignalRemoteCandidate(data string) error {
 	if session.socket == nil {
 		return nil
 	}
-	return session.socket.Send(&message.SignalCandidate{
+	session.logger.Info().Msg("signal update - RemoteCandidate")
-		Event: event.SIGNAL_CANDIDATE,
+	return session.peer.SetCandidate(data)
-		Data:  data,
-	})
 }
 
 func (session *Session) destroy() error {

server/internal/types/session.go

@@ -40,9 +40,10 @@ type Session interface {
 	Send(v interface{}) error
 	SignalLocalOffer(sdp string) error
 	SignalLocalAnswer(sdp string) error
+	SignalLocalCandidate(data string) error
 	SignalRemoteOffer(sdp string) error
 	SignalRemoteAnswer(sdp string) error
-	SignalCandidate(data string) error
+	SignalRemoteCandidate(data string) error
 }
 
 type SessionManager interface {

server/internal/types/webrtc.go

@@ -21,6 +21,7 @@ type Peer interface {
 	CreateAnswer() (string, error)
 	SetOffer(sdp string) error
 	SetAnswer(sdp string) error
+	SetCandidate(candidateString string) error
 	WriteData(v interface{}) error
 	Destroy() error
 }

server/internal/webrtc/peer.go

@@ -1,6 +1,7 @@
 package webrtc
 
 import (
+	"encoding/json"
 	"sync"
 
 	"github.com/pion/webrtc/v3"
@@ -49,6 +50,16 @@ func (peer *Peer) SetAnswer(sdp string) error {
 	return peer.connection.SetRemoteDescription(webrtc.SessionDescription{SDP: sdp, Type: webrtc.SDPTypeAnswer})
 }
 
+func (peer *Peer) SetCandidate(candidateString string) error {
+	var candidate webrtc.ICECandidateInit
+	err := json.Unmarshal([]byte(candidateString), &candidate)
+	if err != nil {
+		return err
+	}
+
+	return peer.connection.AddICECandidate(candidate)
+}
+
 func (peer *Peer) WriteData(v interface{}) error {
 	peer.mu.Lock()
 	defer peer.mu.Unlock()

server/internal/webrtc/webrtc.go

@@ -123,7 +123,6 @@ func (manager *WebRTCManager) initAPI() error {
 		LoggerFactory: logger,
 	}
 
-	_ = settings.SetEphemeralUDPPortRange(manager.config.EphemeralMin, manager.config.EphemeralMax)
 	settings.SetNAT1To1IPs(manager.config.NAT1To1IPs, webrtc.ICECandidateTypeHost)
 	settings.SetICETimeouts(6*time.Second, 6*time.Second, 3*time.Second)
 	settings.SetSRTPReplayProtectionWindow(512)
@@ -168,12 +167,15 @@ func (manager *WebRTCManager) initAPI() error {
 
 		networkType = append(networkType, webrtc.NetworkTypeUDP4)
 		manager.logger.Info().Int("port", manager.config.UDPMUX).Msg("using UDP MUX")
+	} else if manager.config.EphemeralMax != 0 {
+		_ = settings.SetEphemeralUDPPortRange(manager.config.EphemeralMin, manager.config.EphemeralMax)
+		networkType = append(networkType,
+			webrtc.NetworkTypeUDP4,
+			webrtc.NetworkTypeUDP6,
+		)
 	}
 
-	// Enable support for TCP and UDP ICE candidates
+	settings.SetNetworkTypes(networkType)
-	if len(networkType) > 0 {
-		settings.SetNetworkTypes(networkType)
-	}
 
 	// Create MediaEngine with selected codecs
 	engine := webrtc.MediaEngine{}
@@ -299,7 +301,7 @@ func (manager *WebRTCManager) CreatePeer(id string, session types.Session) (type
 			return
 		}
 
-		if err := session.SignalCandidate(string(candidateString)); err != nil {
+		if err := session.SignalLocalCandidate(string(candidateString)); err != nil {
 			manager.logger.Warn().Err(err).Msg("sending SignalCandidate failed")
 			return
 		}

server/internal/websocket/handler/handler.go

@@ -87,6 +87,12 @@ func (h *MessageHandler) Message(id string, raw []byte) error {
 			utils.Unmarshal(payload, raw, func() error {
 				return h.signalRemoteAnswer(id, session, payload)
 			}), "%s failed", header.Event)
+	case event.SIGNAL_CANDIDATE:
+		payload := &message.SignalCandidate{}
+		return errors.Wrapf(
+			utils.Unmarshal(payload, raw, func() error {
+				return h.signalRemoteCandidate(id, session, payload)
+			}), "%s failed", header.Event)
 
 	// Control Events
 	case event.CONTROL_RELEASE:

server/internal/websocket/handler/signal.go

@@ -45,3 +45,7 @@ func (h *MessageHandler) signalRemoteAnswer(id string, session types.Session, pa
 
 	return nil
 }
+
+func (h *MessageHandler) signalRemoteCandidate(id string, session types.Session, payload *message.SignalCandidate) error {
+	return session.SignalRemoteCandidate(payload.Data)
+}