Merge pull request #698 from OpenVidu/feature/custom-ice-servers

Feature/custom ice servers

openvidu-browser/src/OpenVidu/Session.ts

@@ -1501,7 +1501,21 @@ export class Session extends EventDispatcher {
 
     private processJoinRoomResponse(opts: LocalConnectionOptions) {
         this.sessionId = opts.session;
-        if (opts.coturnIp != null && opts.coturnPort != null && opts.turnUsername != null && opts.turnCredential != null) {
+        if (opts.customIceServers != null && opts.customIceServers.length > 0) {
+            this.openvidu.iceServers = [];
+            for(const iceServer of opts.customIceServers) {
+                let rtcIceServer: RTCIceServer = {
+                    urls: [ iceServer.url ]
+                }
+                logger.log("STUN/TURN server IP: " + iceServer.url);
+                if (iceServer.username != null && iceServer.credential != null) {
+                    rtcIceServer.username = iceServer.username;
+                    rtcIceServer.credential = iceServer.credential;
+                    logger.log('TURN credentials [' + iceServer.username + ':' + iceServer.credential + ']');
+                }
+                this.openvidu.iceServers.push(rtcIceServer);
+            }
+        } else if (opts.coturnIp != null && opts.coturnPort != null && opts.turnUsername != null && opts.turnCredential != null) {
             const turnUrl1 = 'turn:' + opts.coturnIp + ':' + opts.coturnPort;
             this.openvidu.iceServers = [
                 { urls: [turnUrl1], username: opts.turnUsername, credential: opts.turnCredential }

openvidu-browser/src/OpenViduInternal/Interfaces/Private/IceServerProperties.ts

@@ -0,0 +1,21 @@
+/*
+ * (C) Copyright 2017-2022 OpenVidu (https://openvidu.io)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+export interface IceServerProperties {
+    url: string;
+    username?: string;
+    credential?: string;
+}

openvidu-browser/src/OpenViduInternal/Interfaces/Private/LocalConnectionOptions.ts

@@ -16,6 +16,7 @@
  */
 
 import { RemoteConnectionOptions } from './RemoteConnectionOptions';
+import { IceServerProperties } from './IceServerProperties';
 
 export interface LocalConnectionOptions {
     id: string;
@@ -35,4 +36,5 @@ export interface LocalConnectionOptions {
     mediaServer: string;
     videoSimulcast: boolean;
     life: number;
+    customIceServers?: IceServerProperties[]
 }

openvidu-client/src/main/java/io/openvidu/client/internal/ProtocolElements.java

@@ -165,6 +165,7 @@ public class ProtocolElements {
 	public static final String PARTICIPANTJOINED_ROLE_PARAM = "role";
 	public static final String PARTICIPANTJOINED_COTURNIP_PARAM = "coturnIp";
 	public static final String PARTICIPANTJOINED_COTURNPORT_PARAM = "coturnPort";
+	public static final String PARTICIPANTJOINED_CUSTOM_ICE_SERVERS = "customIceServers";
 	public static final String PARTICIPANTJOINED_TURNUSERNAME_PARAM = "turnUsername";
 	public static final String PARTICIPANTJOINED_TURNCREDENTIAL_PARAM = "turnCredential";
 

openvidu-java-client/pom.xml

@@ -86,6 +86,11 @@
 			<version>${version.junit}</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>commons-validator</groupId>
+			<artifactId>commons-validator</artifactId>
+			<version>${version.commons-validator}</version>
+		</dependency>
 	</dependencies>
 
 	<profiles>

openvidu-java-client/src/main/java/io/openvidu/java/client/Connection.java

@@ -25,7 +25,9 @@ import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
 
 /**
  * See {@link io.openvidu.java.client.Session#getConnections()}
@@ -190,6 +192,19 @@ public class Connection {
 		return this.connectionProperties.getNetworkCache();
 	}
 
+	/**
+	 * Returns a list of custom ICE Servers configured for this connection.
+	 * <br><br>
+	 * See {@link io.openvidu.java.client.ConnectionProperties.Builder#addCustomIceServer(IceServerProperties)} for more
+	 * information.
+	 * <br><br>
+	 * <strong>Only for
+	 * {@link io.openvidu.java.client.ConnectionType#WEBRTC}</strong>
+	 */
+	public List<IceServerProperties> getCustomIceServers() {
+		return this.connectionProperties.getCustomIceServers();
+	}
+
 	/**
 	 * Returns the token string associated to the Connection. This is the value that
 	 * must be sent to the client-side to be consumed in OpenVidu Browser method
@@ -322,6 +337,11 @@ public class Connection {
 		if (this.connectionProperties.getNetworkCache() != null) {
 			builder.networkCache(this.connectionProperties.getNetworkCache());
 		}
+		if (this.connectionProperties.getCustomIceServers() != null && !this.connectionProperties.getCustomIceServers().isEmpty()) {
+			for (IceServerProperties iceServerProperties: this.connectionProperties.getCustomIceServers()) {
+				builder.addCustomIceServer(iceServerProperties);
+			}
+		}
 		this.connectionProperties = builder.build();
 	}
 
@@ -415,6 +435,24 @@ public class Connection {
 				? OpenViduRole.valueOf(json.get("role").getAsString())
 				: null;
 
+		List<IceServerProperties> customIceServers = new ArrayList<>();
+		if (json.has("customIceServers") && json.get("customIceServers").isJsonArray()) {
+			JsonArray customIceServersJsonArray = json.get("customIceServers").getAsJsonArray();
+			customIceServersJsonArray.forEach(iceJsonElem -> {
+				JsonObject iceJsonObj = iceJsonElem.getAsJsonObject();
+				String url = (iceJsonObj.has("url") && !iceJsonObj.get("url").isJsonNull())
+						? iceJsonObj.get("url").getAsString()
+						: null;
+				String username = (iceJsonObj.has("username") && !iceJsonObj.get("username").isJsonNull())
+						? iceJsonObj.get("username").getAsString()
+						: null;
+				String credential = (iceJsonObj.has("credential") && !iceJsonObj.get("credential").isJsonNull())
+						? iceJsonObj.get("credential").getAsString()
+						: null;
+				customIceServers.add(new IceServerProperties.Builder().url(url).username(username).credential(credential).build());
+			});
+		}
+
 		// IPCAM
 		String rtspUri = (json.has("rtspUri") && !json.get("rtspUri").isJsonNull()) ? json.get("rtspUri").getAsString()
 				: null;
@@ -428,8 +466,9 @@ public class Connection {
 		Integer networkCache = (json.has("networkCache") && !json.get("networkCache").isJsonNull())
 				? json.get("networkCache").getAsInt()
 				: null;
+
 		this.connectionProperties = new ConnectionProperties(type, data, record, role, null, rtspUri, adaptativeBitrate,
-				onlyPlayWithSubscribers, networkCache);
+				onlyPlayWithSubscribers, networkCache, customIceServers);
 
 		return this;
 	}

openvidu-java-client/src/main/java/io/openvidu/java/client/ConnectionProperties.java

@@ -1,8 +1,12 @@
 package io.openvidu.java.client;
 
+import com.google.gson.JsonArray;
 import com.google.gson.JsonNull;
 import com.google.gson.JsonObject;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * See
  * {@link io.openvidu.java.client.Session#createConnection(ConnectionProperties)}
@@ -22,6 +26,9 @@ public class ConnectionProperties {
 	private Boolean onlyPlayWithSubscribers;
 	private Integer networkCache;
 
+	// External Turn Service
+	private List<IceServerProperties> customIceServers;
+
 	/**
 	 * 
 	 * Builder for {@link io.openvidu.java.client.ConnectionProperties}
@@ -36,18 +43,21 @@ public class ConnectionProperties {
 		// WEBRTC
 		private OpenViduRole role;
 		private KurentoOptions kurentoOptions;
+		private List<IceServerProperties> customIceServers = new ArrayList<>();
 		// IPCAM
 		private String rtspUri;
 		private Boolean adaptativeBitrate;
 		private Boolean onlyPlayWithSubscribers;
 		private Integer networkCache;
 
+
 		/**
 		 * Builder for {@link io.openvidu.java.client.ConnectionProperties}.
 		 */
 		public ConnectionProperties build() {
 			return new ConnectionProperties(this.type, this.data, this.record, this.role, this.kurentoOptions,
-					this.rtspUri, this.adaptativeBitrate, this.onlyPlayWithSubscribers, this.networkCache);
+					this.rtspUri, this.adaptativeBitrate, this.onlyPlayWithSubscribers, this.networkCache,
+					this.customIceServers);
 		}
 
 		/**
@@ -219,11 +229,42 @@ public class ConnectionProperties {
 			this.networkCache = networkCache;
 			return this;
 		}
+
+		/**
+		 * On certain type of networks, clients using default OpenVidu STUN/TURN server can not be reached it because
+		 * firewall rules and network topologies at the client side. This method allows you to configure your
+		 * own ICE Server for specific connections if you need it. This is usually not necessary, only it is usefull for
+		 * OpenVidu users behind firewalls which allows traffic from/to specific ports which may need a custom
+		 * ICE Server configuration
+		 *
+		 * Add an ICE Server if in your use case you need this connection to use your own ICE Server deployment.
+		 * When the user uses this connection, it will use the specified ICE Servers defined here.
+		 *
+		 * The level of precedence for ICE Server configuration on every OpenVidu connection is:
+	 	 * <ol>
+		 * <li>Configured ICE Server using Openvidu.setAdvancedCofiguration() at openvidu-browser.</li>
+		 * <li>Configured ICE server at
+		 * {@link io.openvidu.java.client.ConnectionProperties#customIceServers ConnectionProperties.customIceServers}</li>
+		 * <li>Configured ICE Server at global configuration parameter: OPENVIDU_WEBRTC_ICE_SERVERS</li>
+		 * <li>Default deployed Coturn within OpenVidu deployment</li>
+		 * </ol>
+		 * <br>
+		 * If no value is found at level 1, level 2 will be used, and so on until level 4.
+		 * <br>
+		 * This method is equivalent to level 2 of precedence.
+		 * <br><br>
+		 * <strong>Only for
+		 * {@link io.openvidu.java.client.ConnectionType#WEBRTC}</strong>
+		 */
+		public Builder addCustomIceServer(IceServerProperties iceServerProperties) {
+			this.customIceServers.add(iceServerProperties);
+			return this;
+		}
 	}
 
 	ConnectionProperties(ConnectionType type, String data, Boolean record, OpenViduRole role,
 			KurentoOptions kurentoOptions, String rtspUri, Boolean adaptativeBitrate, Boolean onlyPlayWithSubscribers,
-			Integer networkCache) {
+			Integer networkCache, List<IceServerProperties> customIceServers) {
 		this.type = type;
 		this.data = data;
 		this.record = record;
@@ -233,6 +274,7 @@ public class ConnectionProperties {
 		this.adaptativeBitrate = adaptativeBitrate;
 		this.onlyPlayWithSubscribers = onlyPlayWithSubscribers;
 		this.networkCache = networkCache;
+		this.customIceServers = customIceServers;
 	}
 
 	/**
@@ -346,6 +388,19 @@ public class ConnectionProperties {
 		return this.networkCache;
 	}
 
+	/**
+	 * Returns a list of custom ICE Servers configured for this connection.
+	 * <br><br>
+	 * See {@link io.openvidu.java.client.ConnectionProperties.Builder#addCustomIceServer(IceServerProperties)} for more
+	 * information.
+	 * <br><br>
+	 * <strong>Only for
+	 * {@link io.openvidu.java.client.ConnectionType#WEBRTC}</strong>
+	 */
+	public List<IceServerProperties> getCustomIceServers() {
+		return new ArrayList<>(this.customIceServers);
+	}
+
 	public JsonObject toJson(String sessionId) {
 		JsonObject json = new JsonObject();
 		json.addProperty("session", sessionId);
@@ -376,6 +431,12 @@ public class ConnectionProperties {
 		} else {
 			json.add("kurentoOptions", JsonNull.INSTANCE);
 		}
+		JsonArray customIceServersJsonList = new JsonArray();
+		customIceServers.forEach((customIceServer) -> {
+			customIceServersJsonList.add(customIceServer.toJson());
+		});
+		json.add("customIceServers", customIceServersJsonList);
+
 		// IPCAM
 		if (getRtspUri() != null) {
 			json.addProperty("rtspUri", getRtspUri());

openvidu-java-client/src/main/java/io/openvidu/java/client/IceServerProperties.java

@@ -0,0 +1,286 @@
+/*
+ * (C) Copyright 2017-2020 OpenVidu (https://openvidu.io)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package io.openvidu.java.client;
+
+import com.google.gson.JsonObject;
+import org.apache.commons.validator.routines.DomainValidator;
+import org.apache.commons.validator.routines.InetAddressValidator;
+
+import java.net.Inet6Address;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * See
+ * {@link io.openvidu.java.client.ConnectionProperties.Builder#addCustomIceServer(IceServerProperties)}
+ */
+public class IceServerProperties {
+
+    private String url;
+    private String username;
+    private String credential;
+
+    /**
+     * Returns the defined ICE Server url for this {@link IceServerProperties} object.
+     */
+    public String getUrl() {
+        return url;
+    }
+
+    /**
+     * Returns the Username to be used for TURN connections at the defined {@link IceServerProperties#getUrl()}
+     * and {@link IceServerProperties#getCredential()} for this {@link IceServerProperties} object.
+     */
+    public String getUsername() {
+        return username;
+    }
+
+    /**
+     * Returns the credential to be used for TURN connections at the defined {@link IceServerProperties#getUrl()}
+     * and {@link IceServerProperties#getUsername()} for this {@link IceServerProperties} object.
+     */
+    public String getCredential() {
+        return credential;
+    }
+
+    private IceServerProperties(String url, String username, String credential) {
+        this.url = url;
+        this.username = username;
+        this.credential = credential;
+    }
+
+    /**
+     * @hidden
+     */
+    public JsonObject toJson() {
+        JsonObject json = new JsonObject();
+        json.addProperty("url", getUrl());
+        if (getUsername() != null && !getUsername().isEmpty()) {
+            json.addProperty("username", getUsername());
+        }
+        if (getCredential() != null && !getCredential().isEmpty()) {
+            json.addProperty("credential", getCredential());
+        }
+        return json;
+    }
+
+    /**
+     * Builder for {@link IceServerProperties}
+     */
+    public static class Builder {
+
+        private String url;
+        private String username;
+        private String credential;
+
+        /**
+         * Set the url for the ICE Server you want to use.
+         * It should follow a valid format:
+         * <ul>
+         *     <li><a href="https://datatracker.ietf.org/doc/html/rfc7065#section-3.1" target="_blank">https://datatracker.ietf.org/doc/html/rfc7065#section-3.1</a></li>
+         *     <li><a href="https://datatracker.ietf.org/doc/html/rfc7064#section-3.1" target="_blank">https://datatracker.ietf.org/doc/html/rfc7064#section-3.1</a></li>
+         * </ul>
+         */
+        public IceServerProperties.Builder url(String url) {
+            this.url = url;
+            return this;
+        }
+
+        /**
+         * Set a username for the ICE Server you want to use.
+         * This parameter should be defined only for TURN, not for STUN ICE Servers.
+         */
+        public IceServerProperties.Builder username(String userName) {
+            this.username = userName;
+            return this;
+        }
+
+        /**
+         * Set a credential for the ICE Server you want to use.
+         * This parameter should be defined only for TURN, not for STUN ICE Servers.
+         */
+        public IceServerProperties.Builder credential(String credential) {
+            this.credential = credential;
+            return this;
+        }
+
+
+        /**
+         * Builder for {@link io.openvidu.java.client.RecordingProperties}
+         * @throws IllegalArgumentException if the defined properties does not follows
+         * common STUN/TURN RFCs:
+         * <ul>
+         *     <li><a href="https://datatracker.ietf.org/doc/html/rfc7065#section-3.1" target="_blank">https://datatracker.ietf.org/doc/html/rfc7065#section-3.1</a></li>
+         *     <li><a href="https://datatracker.ietf.org/doc/html/rfc7064#section-3.1" target="_blank">https://datatracker.ietf.org/doc/html/rfc7064#section-3.1</a></li>
+         * </ul>
+         */
+        public IceServerProperties build() throws IllegalArgumentException {
+            if (this.url == null) {
+                throw new IllegalArgumentException("External turn url cannot be null");
+            }
+            this.checkValidStunTurn(this.url);
+            if (this.url.startsWith("turn")) {
+                if ((this.username == null || this.credential == null)) {
+                    throw new IllegalArgumentException("Credentials must be defined while using turn");
+                }
+            } else if (this.url.startsWith("stun")) {
+                if (this.username != null || this.credential != null) {
+                    // Credentials can not be defined using stun
+                    throw new IllegalArgumentException("Credentials can not be defined while using stun.");
+                }
+            }
+            return new IceServerProperties(this.url, this.username, this.credential);
+        }
+
+        private void checkValidStunTurn(String uri) throws IllegalArgumentException {
+            final String TCP_TRANSPORT_SUFFIX = "?transport=tcp";
+            final String UDP_TRANSPORT_SUFFIX = "?transport=udp";
+
+            // Protocols which accepts transport=tcp and transport=udp
+            final Set<String> TURN_PROTOCOLS = new HashSet<>(Arrays.asList(
+                    "turn",
+                    "turns"
+            ));
+            final Set<String> STUN_PROTOCOLS = new HashSet<>(Arrays.asList(
+                    "stun",
+                    "stuns"
+            ));
+
+            // Fails if no colons
+            int firstColonPos = uri.indexOf(':');
+            if (firstColonPos == -1) {
+                throw new IllegalArgumentException("Not a valid TURN/STUN uri provided. " +
+                        "No colons found in: '" + uri + "'");
+            }
+
+            // Get protocol and check
+            String protocol = uri.substring(0, firstColonPos);
+            if (!TURN_PROTOCOLS.contains(protocol) && !STUN_PROTOCOLS.contains(protocol)) {
+                throw new IllegalArgumentException("The protocol '" + protocol + "' is invalid. Only valid values are: "
+                        + TURN_PROTOCOLS + " " + STUN_PROTOCOLS);
+            }
+
+            // Check if query param with transport exist
+            int qmarkPos = uri.indexOf('?');
+            String hostAndPort = uri.substring(firstColonPos + 1);
+            if (qmarkPos != -1) {
+                if (TURN_PROTOCOLS.contains(protocol)) {
+                    // Only Turn uses transport arg
+                    String rawTransportType = uri.substring(qmarkPos);
+                    hostAndPort = uri.substring(firstColonPos + 1, qmarkPos);
+                    if (!TCP_TRANSPORT_SUFFIX.equals(rawTransportType) && !UDP_TRANSPORT_SUFFIX.equals(rawTransportType)) {
+                        // If other argument rather than transport is specified, it is a wrong query for a STUN/TURN uri
+                        throw new IllegalArgumentException("Wrong value specified in STUN/TURN uri: '"
+                                + uri + "'. " + "Unique valid arguments after '?' are '"
+                                + TCP_TRANSPORT_SUFFIX + "' or '" + UDP_TRANSPORT_SUFFIX);
+                    }
+                } else {
+                    throw new IllegalArgumentException("STUN uri can't have any '?' query param");
+                }
+            }
+
+            // Check if port is defined
+            int portColon = hostAndPort.indexOf(':');
+            // IPv6 are defined between brackets
+            int startIpv6Index = hostAndPort.indexOf('[');
+            int endIpv6Index = hostAndPort.indexOf(']');
+            if (startIpv6Index == -1 ^ endIpv6Index == -1) {
+                throw new IllegalArgumentException("Not closed bracket '[' or ']' in uri: " + uri);
+            }
+
+            if (portColon != -1) {
+                if (startIpv6Index == -1 && endIpv6Index == -1) {
+                    // If Ipv4 and port defined
+                    String[] splittedHostAndPort = hostAndPort.split(":");
+                    if (splittedHostAndPort.length != 2) {
+                        throw new IllegalArgumentException("Host or port are not correctly " +
+                                "defined in STUN/TURN uri: '" + uri + "'");
+                    }
+                    String host = splittedHostAndPort[0];
+                    String port = splittedHostAndPort[1];
+
+                    // Check if host is defined. Valid Host (Domain or IP) will be done at server side
+                    checkHostAndPort(uri, host, port);
+                } else {
+                    // If portColon is found and Ipv6
+                    String ipv6 = hostAndPort.substring(startIpv6Index + 1, endIpv6Index);
+                    String auxPort = hostAndPort.substring(endIpv6Index + 1);
+                    if (auxPort.startsWith(":")) {
+                        if (auxPort.length() == 1) {
+                            throw new IllegalArgumentException("Host or port are not correctly defined in STUN/TURN uri: " + uri);
+                        }
+                        // If port is defined
+                        // Get port without colon and check host and port
+                        String host = ipv6;
+                        String port = auxPort.substring(1);
+                        checkHostAndPort(uri, host, port);
+                    } else if (auxPort.length() > 0) {
+                        // If auxPort = 0, no port is defined
+                        throw new IllegalArgumentException("Port is not specified correctly after IPv6 in uri: '" + uri + "'");
+                    }
+                }
+            } else {
+                // If portColon not found, only host is defined
+                String host = hostAndPort;
+                checkHost(uri, host);
+            }
+        }
+
+        private void checkHost(String uri, String host) {
+            if (host == null || host.isEmpty()) {
+                throw new IllegalArgumentException("Host defined in '" + uri + "' is empty or null");
+            }
+            if (DomainValidator.getInstance().isValid(host)) {
+                return;
+            }
+            InetAddressValidator ipValidator = InetAddressValidator.getInstance();
+            if (ipValidator.isValid(host)) {
+                return;
+            }
+            try {
+                Inet6Address.getByName(host).getHostAddress();
+                return;
+            } catch (UnknownHostException e) {
+                throw new IllegalArgumentException("Is not a valid Internet Address (IP or Domain Name): '" + host + "'");
+            }
+        }
+
+        private void checkPort(String uri, String port) {
+            if (port == null || port.isEmpty()) {
+                throw new IllegalArgumentException("Port defined in '" + uri + "' is empty or null");
+            }
+
+            try {
+                int parsedPort = Integer.parseInt(port);
+                if (parsedPort <= 0 || parsedPort > 65535) {
+                    throw new IllegalArgumentException("The port defined in '" + uri + "' is not a valid port number (0-65535)");
+                }
+            } catch (NumberFormatException e) {
+                throw new IllegalArgumentException("The port defined in '" + uri + "' is not a number (0-65535)");
+            }
+        }
+
+        private void checkHostAndPort(String uri, String host, String port) {
+            this.checkHost(uri, host);
+            this.checkPort(uri, port);
+        }
+    }
+
+}

openvidu-node-client/src/Connection.ts

@@ -18,6 +18,7 @@
 import { Publisher } from './Publisher';
 import { ConnectionProperties } from './ConnectionProperties';
 import { OpenViduRole } from './OpenViduRole';
+import { IceServerProperties } from './IceServerProperties';
 
 /**
  * See [[Session.connections]]
@@ -138,6 +139,7 @@ export class Connection {
             this.connectionProperties.adaptativeBitrate = json.adaptativeBitrate;
             this.connectionProperties.onlyPlayWithSubscribers = json.onlyPlayWithSubscribers;
             this.connectionProperties.networkCache = json.networkCache;
+            this.connectionProperties.customIceServers = json.customIceServers ?? []
         } else {
             this.connectionProperties = {
                 type: json.type,
@@ -148,7 +150,8 @@ export class Connection {
                 rtspUri: json.rtspUri,
                 adaptativeBitrate: json.adaptativeBitrate,
                 onlyPlayWithSubscribers: json.onlyPlayWithSubscribers,
-                networkCache: json.networkCache
+                networkCache: json.networkCache,
+                customIceServers: json.customIceServers ?? []
             }
         }
         this.role = json.role;
@@ -224,6 +227,7 @@ export class Connection {
             this.connectionProperties.adaptativeBitrate === other.connectionProperties.adaptativeBitrate &&
             this.connectionProperties.onlyPlayWithSubscribers === other.connectionProperties.onlyPlayWithSubscribers &&
             this.connectionProperties.networkCache === other.connectionProperties.networkCache &&
+            this.connectionProperties.customIceServers.length === other.connectionProperties.customIceServers.length &&
             this.token === other.token &&
             this.location === other.location &&
             this.ip === other.ip &&
@@ -238,6 +242,15 @@ export class Connection {
                 equals = (this.connectionProperties.kurentoOptions === other.connectionProperties.kurentoOptions);
             }
         }
+        if (equals) {
+            if (this.connectionProperties.customIceServers != null) {
+                // Order alphabetically Ice servers using url just to keep the same list order.
+                const simpleIceComparator = (a: IceServerProperties, b: IceServerProperties) => (a.url > b.url) ? 1 : -1
+                const sortedIceServers = this.connectionProperties.customIceServers.sort(simpleIceComparator);
+                const sortedOtherIceServers = other.connectionProperties.customIceServers.sort(simpleIceComparator);
+                equals = JSON.stringify(sortedIceServers) === JSON.stringify(sortedOtherIceServers);
+            }
+        }
         if (equals) {
             equals = JSON.stringify(this.subscribers.sort()) === JSON.stringify(other.subscribers.sort());
             if (equals) {

openvidu-node-client/src/ConnectionProperties.ts

@@ -15,6 +15,7 @@
  *
  */
 
+import { IceServerProperties } from './IceServerProperties';
 import { ConnectionType } from './ConnectionType';
 import { OpenViduRole } from './OpenViduRole';
 
@@ -127,4 +128,30 @@ export interface ConnectionProperties {
      */
     networkCache?: number;
 
+    /**
+     * On certain type of networks, clients using default OpenVidu STUN/TURN server can not be reached it because
+     * firewall rules and network topologies at the client side. This method allows you to configure your
+     * own ICE Server for specific connections if you need it. This is usually not necessary, only it is usefull for
+     * OpenVidu users behind firewalls which allows traffic from/to specific ports which may need a custom
+     * ICE Server configuration
+     *
+     * Add an ICE Server if in your use case you need this connection to use your own ICE Server deployment.
+     * When the user uses this connection, it will use the specified ICE Servers defined here.
+     *
+     * The level of precedence for ICE Server configuration on every OpenVidu connection is:
+     *
+     * 1. Configured ICE Server using Openvidu.setAdvancedCofiguration() at openvidu-browser.
+     * 2. Configured ICE server at [[ConnectionProperties.customIceServers]].
+     * 3. Configured ICE Server at global configuration parameter: `OPENVIDU_WEBRTC_ICE_SERVERS`.
+     * 4. Default deployed Coturn within OpenVidu deployment.
+     *
+     *
+     * If no value is found at level 1, level 2 will be used, and so on until level 4.
+     *
+     * This method is equivalent to level 2 of precedence.
+     *
+     * **Only for [[ConnectionType.WEBRTC]]**
+     *
+     */
+    customIceServers?: IceServerProperties[];
 }

openvidu-node-client/src/IceServerProperties.ts

@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2017-2020 OpenVidu (https://openvidu.io)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+export interface IceServerProperties {
+
+    /**
+     * Set the url for the ICE Server you want to use.
+     * It should follow a valid format:
+     *
+     * - [https://datatracker.ietf.org/doc/html/rfc7065#section-3.1](https://datatracker.ietf.org/doc/html/rfc7065#section-3.1)
+     * - [https://datatracker.ietf.org/doc/html/rfc7064#section-3.1](https://datatracker.ietf.org/doc/html/rfc7064#section-3.1)
+     *
+     */
+    url: string;
+
+    /**
+     * Set a username for the ICE Server you want to use.
+     * This parameter should be defined only for TURN, not for STUN ICE Servers.
+     */
+    username?: string;
+
+    /**
+     * Set a credential for the ICE Server you want to use.
+     * This parameter should be defined only for TURN, not for STUN ICE Servers.
+     */
+    credential?: string;
+
+}

openvidu-node-client/src/Session.ts

@@ -28,6 +28,7 @@ import { RecordingMode } from './RecordingMode';
 import { SessionProperties } from './SessionProperties';
 import { TokenOptions } from './TokenOptions';
 import { RecordingProperties } from 'RecordingProperties';
+import { IceServerProperties } from 'IceServerProperties';
 
 export class Session {
 
@@ -150,7 +151,8 @@ export class Session {
                 rtspUri: (!!connectionProperties && !!connectionProperties.rtspUri) ? connectionProperties.rtspUri : null,
                 adaptativeBitrate: !!connectionProperties ? connectionProperties.adaptativeBitrate : null,
                 onlyPlayWithSubscribers: !!connectionProperties ? connectionProperties.onlyPlayWithSubscribers : null,
-                networkCache: (!!connectionProperties && (connectionProperties.networkCache != null)) ? connectionProperties.networkCache : null
+                networkCache: (!!connectionProperties && (connectionProperties.networkCache != null)) ? connectionProperties.networkCache : null,
+                customIceServers: (!!connectionProperties && (!!connectionProperties.customIceServers != null)) ? connectionProperties.customIceServers : null
             });
             axios.post(
                 this.ov.host + OpenVidu.API_SESSIONS + '/' + this.sessionId + '/connection',
@@ -560,7 +562,6 @@ export class Session {
         // 1. Array to store fetched connections and later remove closed ones
         const fetchedConnectionIds: string[] = [];
         json.connections.content.forEach(jsonConnection => {
-
             const connectionObj: Connection = new Connection(jsonConnection);
             fetchedConnectionIds.push(connectionObj.connectionId);
             let storedConnection = this.connections.find(c => c.connectionId === connectionObj.connectionId);
@@ -583,6 +584,16 @@ export class Session {
 
         // Order connections by time of creation
         this.connections.sort((c1, c2) => (c1.createdAt > c2.createdAt) ? 1 : ((c2.createdAt > c1.createdAt) ? -1 : 0));
+
+        // Order Ice candidates in connection properties
+        this.connections.forEach(connection => {
+            if (connection.connectionProperties.customIceServers != null &&
+                connection.connectionProperties.customIceServers.length > 0) {
+                    // Order alphabetically Ice servers using url just to keep the same list order.
+                    const simpleIceComparator = (a: IceServerProperties, b: IceServerProperties) => (a.url > b.url) ? 1 : -1
+                    connection.connectionProperties.customIceServers.sort(simpleIceComparator);
+                }
+        });
         // Populate activeConnections array
         this.updateActiveConnectionsArray();
         return this;

openvidu-node-client/src/index.ts

@@ -13,3 +13,4 @@ export * from './RecordingProperties';
 export * from './Connection';
 export * from './Publisher';
 export * from './VideoCodec';
+export * from './IceServerProperties';

openvidu-server/src/main/java/io/openvidu/server/config/OpenviduConfig.java

@@ -38,6 +38,7 @@ import java.util.Map.Entry;
 
 import javax.annotation.PostConstruct;
 
+import io.openvidu.java.client.IceServerProperties;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.validator.routines.DomainValidator;
@@ -220,10 +221,12 @@ public class OpenviduConfig {
 
 	private MediaServer mediaServerInfo = MediaServer.kurento;
 
-	// Media properties
+	// Webrtc properties
 
 	private boolean webrtcSimulcast = false;
 
+	private List<IceServerProperties> webrtcIceServers;
+
 	// Plain config properties getters
 
 	public String getCoturnDatabaseDbname() {
@@ -290,6 +293,10 @@ public class OpenviduConfig {
 		return this.webrtcSimulcast;
 	}
 
+	public List<IceServerProperties> getWebrtcIceServers() {
+		return webrtcIceServers;
+	}
+
 	public String getOpenViduRecordingPath() {
 		return this.openviduRecordingPath;
 	}
@@ -619,6 +626,8 @@ public class OpenviduConfig {
 
 		checkCertificateType();
 
+		webrtcIceServers = loadWebrtcIceServers("OPENVIDU_WEBRTC_ICE_SERVERS");
+
 	}
 
 	private void checkCertificateType() {
@@ -1147,4 +1156,46 @@ public class OpenviduConfig {
 		}
 	}
 
+	private List<IceServerProperties> loadWebrtcIceServers(String property) {
+		String rawIceServers = asOptionalString(property);
+		List<IceServerProperties> webrtcIceServers = new ArrayList<>();
+		if (rawIceServers == null || rawIceServers.isEmpty()) {
+			return webrtcIceServers;
+		}
+		List<String> arrayIceServers = asJsonStringsArray(property);
+		for (String iceServerString : arrayIceServers) {
+			try {
+				IceServerProperties iceServerProperties = readIceServer(property, iceServerString);
+				webrtcIceServers.add(iceServerProperties);
+			} catch (Exception e) {
+				addError(property, iceServerString + " is not a valid webrtc ice server: " + e.getMessage());
+			}
+		}
+		return webrtcIceServers;
+	}
+
+	private IceServerProperties readIceServer(String property, String iceServerString) {
+		String url = null, username = null, credential = null;
+		String[] iceServerPropList = iceServerString.split(",");
+		for (String iceServerProp: iceServerPropList) {
+			String[] iceServerPropEntry = iceServerProp.split("=");
+			if (iceServerPropEntry.length == 2) {
+				if (iceServerProp.startsWith("url=")) {
+					url = iceServerPropEntry[1];
+				} else if (iceServerProp.startsWith("username=")) {
+					username = iceServerPropEntry[1];
+				} else if (iceServerProp.startsWith("credential=")) {
+					credential = iceServerPropEntry[1];
+				} else {
+					addError(property, "Wrong parameter: " + iceServerProp);
+				}
+			} else {
+				addError(property, "Wrong parameter: " + iceServerProp);
+			}
+		}
+		IceServerProperties iceServerProperties = new IceServerProperties.Builder()
+				.url(url).username(username).credential(credential).build();
+		return iceServerProperties;
+	}
+
 }

openvidu-server/src/main/java/io/openvidu/server/core/SessionEventsHandler.java

@@ -25,6 +25,7 @@ import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 
+import io.openvidu.java.client.IceServerProperties;
 import org.kurento.client.GenericMediaEvent;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -186,6 +187,11 @@ public class SessionEventsHandler {
 			}
 			result.addProperty(ProtocolElements.PARTICIPANTJOINED_COTURNIP_PARAM, openviduConfig.getCoturnIp());
 			result.addProperty(ProtocolElements.PARTICIPANTJOINED_COTURNPORT_PARAM, openviduConfig.getCoturnPort());
+			List<IceServerProperties> customIceServers = participant.getToken().getCustomIceServers();
+			if (customIceServers!= null && !customIceServers.isEmpty()) {
+				result.add(ProtocolElements.PARTICIPANTJOINED_CUSTOM_ICE_SERVERS,
+						participant.getToken().getCustomIceServersAsJson());
+			}
 			if (participant.getToken().getTurnCredentials() != null) {
 				result.addProperty(ProtocolElements.PARTICIPANTJOINED_TURNUSERNAME_PARAM,
 						participant.getToken().getTurnCredentials().getUsername());

openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java

@@ -19,6 +19,7 @@ package io.openvidu.server.core;
 
 import java.util.Collection;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -51,6 +52,7 @@ import io.openvidu.java.client.KurentoOptions;
 import io.openvidu.java.client.OpenViduRole;
 import io.openvidu.java.client.Recording;
 import io.openvidu.java.client.SessionProperties;
+import io.openvidu.java.client.IceServerProperties;
 import io.openvidu.server.cdr.CDREventRecordingStatusChanged;
 import io.openvidu.server.config.OpenviduConfig;
 import io.openvidu.server.coturn.CoturnCredentialsService;
@@ -329,13 +331,13 @@ public abstract class SessionManager {
 	}
 
 	public Token newToken(Session session, OpenViduRole role, String serverMetadata, boolean record,
-			KurentoOptions kurentoOptions) throws Exception {
+			KurentoOptions kurentoOptions, List<IceServerProperties> customIceServers) throws Exception {
 		if (!formatChecker.isServerMetadataFormatCorrect(serverMetadata)) {
 			log.error("Data invalid format");
 			throw new OpenViduException(Code.GENERIC_ERROR_CODE, "Data invalid format");
 		}
 		Token tokenObj = tokenGenerator.generateToken(session.getSessionId(), serverMetadata, record, role,
-				kurentoOptions);
+				kurentoOptions, customIceServers);
 
 		// Internal dev feature: allows customizing connectionId
 		if (serverMetadata.contains("openviduCustomConnectionId")) {

openvidu-server/src/main/java/io/openvidu/server/core/Token.java

@@ -17,18 +17,18 @@
 
 package io.openvidu.server.core;
 
+import com.google.gson.JsonArray;
+import io.openvidu.java.client.*;
 import org.apache.commons.lang3.RandomStringUtils;
 
 import com.google.gson.JsonNull;
 import com.google.gson.JsonObject;
 
-import io.openvidu.java.client.ConnectionProperties;
-import io.openvidu.java.client.ConnectionType;
-import io.openvidu.java.client.KurentoOptions;
-import io.openvidu.java.client.OpenViduRole;
 import io.openvidu.server.core.Participant.ParticipantStatus;
 import io.openvidu.server.coturn.TurnCredentials;
 
+import java.util.List;
+
 public class Token {
 
 	private String token;
@@ -77,7 +77,8 @@ public class Token {
 		this.updateConnectionProperties(connectionProperties.getType(), connectionProperties.getData(), newRecord,
 				connectionProperties.getRole(), connectionProperties.getKurentoOptions(),
 				connectionProperties.getRtspUri(), connectionProperties.adaptativeBitrate(),
-				connectionProperties.onlyPlayWithSubscribers(), connectionProperties.getNetworkCache());
+				connectionProperties.onlyPlayWithSubscribers(), connectionProperties.getNetworkCache(),
+				connectionProperties.getCustomIceServers());
 	}
 
 	public OpenViduRole getRole() {
@@ -88,7 +89,8 @@ public class Token {
 		this.updateConnectionProperties(connectionProperties.getType(), connectionProperties.getData(),
 				connectionProperties.record(), newRole, connectionProperties.getKurentoOptions(),
 				connectionProperties.getRtspUri(), connectionProperties.adaptativeBitrate(),
-				connectionProperties.onlyPlayWithSubscribers(), connectionProperties.getNetworkCache());
+				connectionProperties.onlyPlayWithSubscribers(), connectionProperties.getNetworkCache(),
+				connectionProperties.getCustomIceServers());
 	}
 
 	public KurentoOptions getKurentoOptions() {
@@ -119,6 +121,10 @@ public class Token {
 		return connectionId;
 	}
 
+	public List<IceServerProperties> getCustomIceServers() {
+		return this.connectionProperties.getCustomIceServers();
+	}
+	
 	public void setConnectionId(String connectionId) {
 		this.connectionId = connectionId;
 	}
@@ -138,6 +144,16 @@ public class Token {
 		return json;
 	}
 
+	public JsonArray getCustomIceServersAsJson() {
+		JsonArray customIceServersJsonList = new JsonArray();
+		if (this.connectionProperties.getCustomIceServers() != null) {
+			this.connectionProperties.getCustomIceServers().forEach((customIceServer) -> {
+				customIceServersJsonList.add(customIceServer.toJson());
+			});
+		}
+		return customIceServersJsonList;
+	}
+
 	public JsonObject toJsonAsParticipant() {
 		JsonObject json = new JsonObject();
 		json.addProperty("id", this.getConnectionId());
@@ -178,7 +194,7 @@ public class Token {
 
 	private void updateConnectionProperties(ConnectionType type, String data, Boolean record, OpenViduRole role,
 			KurentoOptions kurentoOptions, String rtspUri, Boolean adaptativeBitrate, Boolean onlyPlayWithSubscribers,
-			Integer networkCache) {
+			Integer networkCache, List<IceServerProperties> iceServerProperties) {
 		ConnectionProperties.Builder builder = new ConnectionProperties.Builder();
 		if (type != null) {
 			builder.type(type);
@@ -207,6 +223,11 @@ public class Token {
 		if (networkCache != null) {
 			builder.networkCache(networkCache);
 		}
+		if (iceServerProperties != null) {
+			for (IceServerProperties customIceServer: iceServerProperties) {
+				builder.addCustomIceServer(customIceServer);
+			}
+		}
 		this.connectionProperties = builder.build();
 	}
 

openvidu-server/src/main/java/io/openvidu/server/core/TokenGenerator.java

@@ -24,12 +24,15 @@ import io.openvidu.java.client.ConnectionProperties;
 import io.openvidu.java.client.ConnectionType;
 import io.openvidu.java.client.KurentoOptions;
 import io.openvidu.java.client.OpenViduRole;
+import io.openvidu.java.client.IceServerProperties;
 import io.openvidu.server.OpenViduServer;
 import io.openvidu.server.config.OpenviduBuildInfo;
 import io.openvidu.server.config.OpenviduConfig;
 import io.openvidu.server.coturn.CoturnCredentialsService;
 import io.openvidu.server.coturn.TurnCredentials;
 
+import java.util.List;
+
 public class TokenGenerator {
 
 	@Autowired
@@ -42,7 +45,7 @@ public class TokenGenerator {
 	protected OpenviduBuildInfo openviduBuildConfig;
 
 	public Token generateToken(String sessionId, String serverMetadata, boolean record, OpenViduRole role,
-			KurentoOptions kurentoOptions) throws Exception {
+			KurentoOptions kurentoOptions, List<IceServerProperties> customIceServers) throws Exception {
 		String token = OpenViduServer.wsUrl;
 		token += "?sessionId=" + sessionId;
 		token += "&token=" + IdentifierPrefixes.TOKEN_ID + RandomStringUtils.randomAlphabetic(1).toUpperCase()
@@ -51,8 +54,13 @@ public class TokenGenerator {
 		if (this.openviduConfig.isTurnadminAvailable()) {
 			turnCredentials = coturnCredentialsService.createUser();
 		}
-		ConnectionProperties connectionProperties = new ConnectionProperties.Builder().type(ConnectionType.WEBRTC)
+		ConnectionProperties.Builder connectionPropertiesBuilder = new ConnectionProperties.Builder()
-				.data(serverMetadata).record(record).role(role).kurentoOptions(kurentoOptions).build();
+				.type(ConnectionType.WEBRTC).data(serverMetadata).record(record).role(role)
+				.kurentoOptions(kurentoOptions);
+		for (IceServerProperties customIceServer: customIceServers) {
+			connectionPropertiesBuilder.addCustomIceServer(customIceServer);
+		}
+		ConnectionProperties connectionProperties = connectionPropertiesBuilder.build();
 		return new Token(token, sessionId, connectionProperties, turnCredentials);
 	}
 

openvidu-server/src/main/java/io/openvidu/server/rest/SessionRestController.java

@@ -21,11 +21,13 @@ import java.net.MalformedURLException;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
+import io.openvidu.java.client.*;
 import org.apache.commons.lang3.RandomStringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -51,17 +53,7 @@ import com.google.gson.JsonParser;
 import io.openvidu.client.OpenViduException;
 import io.openvidu.client.OpenViduException.Code;
 import io.openvidu.client.internal.ProtocolElements;
-import io.openvidu.java.client.ConnectionProperties;
-import io.openvidu.java.client.ConnectionType;
-import io.openvidu.java.client.KurentoOptions;
-import io.openvidu.java.client.MediaMode;
-import io.openvidu.java.client.OpenViduRole;
 import io.openvidu.java.client.Recording.OutputMode;
-import io.openvidu.java.client.RecordingLayout;
-import io.openvidu.java.client.RecordingMode;
-import io.openvidu.java.client.RecordingProperties;
-import io.openvidu.java.client.SessionProperties;
-import io.openvidu.java.client.VideoCodec;
 import io.openvidu.server.config.OpenviduConfig;
 import io.openvidu.server.core.EndReason;
 import io.openvidu.server.core.IdentifierPrefixes;
@@ -662,7 +654,7 @@ public class SessionRestController {
 			try {
 				Token token = sessionManager.newToken(session, connectionProperties.getRole(),
 						connectionProperties.getData(), connectionProperties.record(),
-						connectionProperties.getKurentoOptions());
+						connectionProperties.getKurentoOptions(), connectionProperties.getCustomIceServers());
 				return new ResponseEntity<>(token.toJsonAsParticipant().toString(), RestUtils.getResponseHeaders(),
 						HttpStatus.OK);
 			} catch (Exception e) {
@@ -914,6 +906,41 @@ public class SessionRestController {
 				}
 			}
 
+			// Custom Ice Servers
+			JsonArray customIceServersJsonArray = null;
+			if (params.get("customIceServers") != null) {
+				try {
+					customIceServersJsonArray = new Gson().toJsonTree(params.get("customIceServers"), List.class)
+							.getAsJsonArray();
+				} catch (Exception e) {
+					throw new Exception("Error in parameter 'customIceServersJson'. It is not a valid JSON object");
+				}
+			}
+			if (customIceServersJsonArray != null) {
+				try {
+					for (int i = 0; i < customIceServersJsonArray.size(); i++) {
+						JsonObject customIceServerJson = customIceServersJsonArray.get(i).getAsJsonObject();
+						IceServerProperties.Builder iceServerPropertiesBuilder = new IceServerProperties.Builder();
+						iceServerPropertiesBuilder.url(customIceServerJson.get("url").getAsString());
+						if (customIceServerJson.has("username")) {
+							iceServerPropertiesBuilder.username(customIceServerJson.get("username").getAsString());
+						}
+						if (customIceServerJson.has("credential")) {
+							iceServerPropertiesBuilder.credential(customIceServerJson.get("credential").getAsString());
+						}
+						IceServerProperties iceServerProperties = iceServerPropertiesBuilder.build();
+						builder.addCustomIceServer(iceServerProperties);
+					}
+				} catch (Exception e) {
+					throw new Exception("Type error in some parameter of 'customIceServers': " + e.getMessage());
+				}
+			} else if(!openviduConfig.getWebrtcIceServers().isEmpty()){
+				// If not defined in connection, check if defined in openvidu config
+				for (IceServerProperties iceServerProperties: openviduConfig.getWebrtcIceServers()) {
+					builder.addCustomIceServer(iceServerProperties);
+				}
+			}
+
 			// Build WEBRTC options
 			builder.role(role).kurentoOptions(kurentoOptions);
 
@@ -939,6 +966,8 @@ public class SessionRestController {
 					.onlyPlayWithSubscribers(onlyPlayWithSubscribers).networkCache(networkCache).build();
 		}
 
+
+
 		return builder;
 	}
 

openvidu-server/src/test/java/io/openvidu/server/test/unit/IceServerPropertiesTest.java

@@ -0,0 +1,249 @@
+package io.openvidu.server.test.unit;
+
+import io.openvidu.java.client.IceServerProperties;
+import org.junit.Test;
+import org.junit.jupiter.api.DisplayName;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class IceServerPropertiesTest {
+
+    @Test
+    @DisplayName("IceServerProperty exceptions tests")
+    public void iceServerPropertiesExceptionTest() {
+        // Wrong urls
+        notValidIceServerTest(
+                "wrongurl", null, null,
+                "Not a valid TURN/STUN uri provided. No colons found in: 'wrongurl'"
+        );
+        notValidIceServerTest(
+                "wrongurl", "anyuser", null,
+                "Not a valid TURN/STUN uri provided. No colons found in: 'wrongurl'"
+        );
+        notValidIceServerTest(
+                "wrongurl", null, "anypassword",
+                "Not a valid TURN/STUN uri provided. No colons found in: 'wrongurl'"
+        );
+        notValidIceServerTest(
+                "wrongurl", "anyuser", "anypassword",
+                "Not a valid TURN/STUN uri provided. No colons found in: 'wrongurl'"
+        );
+
+        // Wrong prefixes
+        notValidIceServerTest(
+                "turnss:wrongurl", null, null,
+                "The protocol 'turnss' is invalid. Only valid values are: [turn, turns] [stuns, stun]"
+        );
+        notValidIceServerTest(
+                "stunss:wrongurl", "anyuser", null,
+                "The protocol 'stunss' is invalid. Only valid values are: [turn, turns] [stuns, stun]"
+        );
+        notValidIceServerTest(
+                "anything:wrongurl", null, "anypassword",
+                "The protocol 'anything' is invalid. Only valid values are: [turn, turns] [stuns, stun]"
+        );
+        notValidIceServerTest(
+                ":", null, null,
+                "The protocol '' is invalid. Only valid values are: [turn, turns] [stuns, stun]"
+        );
+        notValidIceServerTest(
+                "", null, null,
+                "Not a valid TURN/STUN uri provided. No colons found in: ''"
+        );
+
+        // Try invalid host and ports
+        notValidIceServerTest(
+                "stun:hostname.com:99a99", null, null,
+                "The port defined in 'stun:hostname.com:99a99' is not a number (0-65535)"
+        );
+        notValidIceServerTest(
+                "stun:hostname.com:-1", null, null,
+                "The port defined in 'stun:hostname.com:-1' is not a valid port number (0-65535)"
+        );
+        notValidIceServerTest(
+                "stun:hostname:port:more", null, null,
+                "Host or port are not correctly defined in STUN/TURN uri: 'stun:hostname:port:more'"
+        );
+        notValidIceServerTest(
+                "stun:hostname.com:port more", null, null,
+                "The port defined in 'stun:hostname.com:port more' is not a number (0-65535)"
+        );
+        notValidIceServerTest(
+                "stun:hostname.com:", null, null,
+                "Host or port are not correctly defined in STUN/TURN uri: 'stun:hostname.com:'"
+        );
+        notValidIceServerTest(
+                "stun:[1:2:3:4:5:6:7:8]junk:1000", null, null,
+                "Port is not specified correctly after IPv6 in uri: 'stun:[1:2:3:4:5:6:7:8]junk:1000'"
+        );
+        notValidIceServerTest(
+                "stun:[notvalid:]:1000", null, null,
+                "Is not a valid Internet Address (IP or Domain Name): 'notvalid:'"
+        );
+        notValidIceServerTest(
+                "stun::5555", null, null,
+                "Host defined in 'stun::5555' is empty or null"
+        );
+        notValidIceServerTest(
+                "stun:", null, null,
+                "Host defined in 'stun:' is empty or null"
+        );
+
+        // Illegal Uri tests according to RFC 3986 and RFC 7064 (URI schemes for STUN and TURN)
+        notValidIceServerTest(
+                "stun:/hostname.com", null, null,
+                "Is not a valid Internet Address (IP or Domain Name): '/hostname.com'"
+        );
+        notValidIceServerTest(
+                "stun:?hostname.com", null, null,
+                "STUN uri can't have any '?' query param"
+        );
+        notValidIceServerTest(
+                "stun:#hostname.com", null, null,
+                "Is not a valid Internet Address (IP or Domain Name): '#hostname.com'"
+        );
+
+        // illegal ?transport=xxx tests in turn uris
+        notValidIceServerTest(
+                "turn:hostname.com?transport=invalid", "anyuser", "anypassword",
+                "Wrong value specified in STUN/TURN uri: 'turn:hostname.com?transport=invalid'. Unique valid arguments after '?' are '?transport=tcp' or '?transport=udp"
+        );
+        notValidIceServerTest(
+                "turn:hostname.com?transport=", "anyuser", "anypassword",
+                "Wrong value specified in STUN/TURN uri: 'turn:hostname.com?transport='. Unique valid arguments after '?' are '?transport=tcp' or '?transport=udp"
+        );
+        notValidIceServerTest(
+                "turn:hostname.com?=", "anyuser", "anypassword",
+                "Wrong value specified in STUN/TURN uri: 'turn:hostname.com?='. Unique valid arguments after '?' are '?transport=tcp' or '?transport=udp"
+        );
+        notValidIceServerTest(
+                "turn:hostname.com?", "anyuser", "anypassword",
+                "Wrong value specified in STUN/TURN uri: 'turn:hostname.com?'. Unique valid arguments after '?' are '?transport=tcp' or '?transport=udp"
+        );
+        notValidIceServerTest(
+                "?", "anyuser", "anypassword",
+                "Not a valid TURN/STUN uri provided. No colons found in: '?'"
+        );
+
+        // Transport can not be defined in STUN
+        notValidIceServerTest(
+                "stun:hostname.com?transport=tcp", null, null,
+                "STUN uri can't have any '?' query param"
+        );
+        notValidIceServerTest(
+                "stun:hostname.com?transport=udp", null, null,
+                "STUN uri can't have any '?' query param"
+        );
+
+        // Stun can not have credentials defined
+        notValidIceServerTest(
+                "stun:hostname.com", "username", "credential",
+                "Credentials can not be defined while using stun."
+        );
+        notValidIceServerTest(
+                "stun:hostname.com", "username", "credential",
+                "Credentials can not be defined while using stun."
+        );
+        notValidIceServerTest(
+                "stun:hostname.com", "username", null,
+                "Credentials can not be defined while using stun."
+        );
+        notValidIceServerTest(
+                "stun:hostname.com", null, "credential",
+                "Credentials can not be defined while using stun."
+        );
+
+        // Turn must have credentials
+        notValidIceServerTest(
+                "turn:hostname.com", null, null,
+                "Credentials must be defined while using turn"
+        );
+        notValidIceServerTest(
+                "turn:hostname.com", "username", null,
+                "Credentials must be defined while using turn"
+        );
+        notValidIceServerTest(
+                "turn:hostname.com", null, "credential",
+                "Credentials must be defined while using turn"
+        );
+    }
+
+    @Test
+    @DisplayName("IceServerProperty exceptions tests")
+    public void iceServerPropertiesValidTest() {
+        // Stun and stuns
+        validIceServerTest("stun:hostname.com", null, null);
+        validIceServerTest("stuns:hostname.com", null, null);
+
+        // Turn and turns
+        validIceServerTest("turn:hostname.com", "anyuser", "credential");
+        validIceServerTest("turns:hostname.com", "anyuser", "credential");
+
+        // Test IPv4/IPv6/hostname and with/without port
+        validIceServerTest("stun:1.2.3.4:1234", null, null);
+        validIceServerTest("stun:[1:2:3:4:5:6:7:8]:4321", null, null);
+        validIceServerTest("stun:hostname.com:9999", null, null);
+        validIceServerTest("stun:1.2.3.4", null, null);
+        validIceServerTest("stun:[1:2:3:4:5:6:7:8]", null, null);
+        validIceServerTest("stuns:1.2.3.4:1234", null, null);
+        validIceServerTest("stuns:[1:2:3:4:5:6:7:8]:4321", null, null);
+        validIceServerTest("stuns:hostname.com:9999", null, null);
+        validIceServerTest("stuns:1.2.3.4", null, null);
+        validIceServerTest("stuns:[1:2:3:4:5:6:7:8]", null, null);
+        validIceServerTest("turn:1.2.3.4:1234", "anyuser", "credential");
+        validIceServerTest("turn:[1:2:3:4:5:6:7:8]:4321", "anyuser", "credential");
+        validIceServerTest("turn:hostname.com:9999", "anyuser", "credential");
+        validIceServerTest("turn:1.2.3.4", "anyuser", "credential");
+        validIceServerTest("turn:[1:2:3:4:5:6:7:8]", "anyuser", "credential");
+        validIceServerTest("turns:1.2.3.4:1234", "anyuser", "credential");
+        validIceServerTest("turns:[1:2:3:4:5:6:7:8]:4321", "anyuser", "credential");
+        validIceServerTest("turns:hostname.com:9999", "anyuser", "credential");
+        validIceServerTest("turns:1.2.3.4", "anyuser", "credential");
+        validIceServerTest("turns:[1:2:3:4:5:6:7:8]", "anyuser", "credential");
+
+        // Test valid ?transport=tcp or ?transport=udp
+        validIceServerTest("turn:hostname.com:1234?transport=tcp", "anyuser", "credential");
+        validIceServerTest("turn:hostname.com?transport=udp", "anyuser", "credential");
+        validIceServerTest("turn:1.2.3.4:1234?transport=tcp", "anyuser", "credential");
+        validIceServerTest("turn:1.2.3.4?transport=udp", "anyuser", "credential");
+        validIceServerTest("turn:[1:2:3:4:5:6:7:8]:4321?transport=udp", "anyuser", "credential");
+        validIceServerTest("turn:[1:2:3:4:5:6:7:8]?transport=udp", "anyuser", "credential");
+    }
+
+    private void validIceServerTest(String url, String username, String credential) {
+        assertDoesNotThrow(() -> {
+            IceServerProperties.Builder iceServerPropertiesBuilder = new IceServerProperties.Builder().url(url);
+            if (username != null) {
+                iceServerPropertiesBuilder.username(username);
+            }
+            if (credential != null) {
+                iceServerPropertiesBuilder.credential(credential);
+            }
+            IceServerProperties iceServerProperties = iceServerPropertiesBuilder.build();
+            assertEquals(url, iceServerProperties.getUrl());
+            if (username != null) {
+                assertEquals(username, iceServerProperties.getUsername());
+            }
+            if (credential != null) {
+                assertEquals(credential, iceServerProperties.getCredential());
+            }
+        });
+    }
+
+    private void notValidIceServerTest(String url, String username, String credential, String expectedMessage) {
+        Exception exception = assertThrows(IllegalArgumentException.class, () -> {
+            IceServerProperties.Builder iceServerPropertiesBuilder = new IceServerProperties.Builder().url(url);
+            if (username != null) {
+                iceServerPropertiesBuilder.username(username);
+            }
+            if (credential != null) {
+                iceServerPropertiesBuilder.credential(credential);
+            }
+            iceServerPropertiesBuilder.build();
+        });
+
+        String actualMessage = exception.getMessage();
+        assertEquals(actualMessage, expectedMessage);
+    }
+
+}

openvidu-test-e2e/src/main/java/io/openvidu/test/e2e/OpenViduTestE2e.java

@@ -68,9 +68,9 @@ public class OpenViduTestE2e {
 	protected static String MEDIA_SERVER_IMAGE = KURENTO_IMAGE + ":6.16.0";
 
 	final protected String DEFAULT_JSON_SESSION = "{'id':'STR','object':'session','sessionId':'STR','createdAt':0,'mediaMode':'STR','recordingMode':'STR','defaultRecordingProperties':{'hasVideo':true,'frameRate':25,'hasAudio':true,'shmSize':536870912,'name':'','outputMode':'COMPOSED','resolution':'1280x720','recordingLayout':'BEST_FIT'},'customSessionId':'STR','connections':{'numberOfElements':0,'content':[]},'recording':false,'forcedVideoCodec':'STR','forcedVideoCodecResolved':'STR','allowTranscoding':false}";
-	final protected String DEFAULT_JSON_PENDING_CONNECTION = "{'id':'STR','object':'connection','type':'WEBRTC','status':'pending','connectionId':'STR','sessionId':'STR','createdAt':0,'activeAt':null,'location':null,'ip':null,'platform':null,'token':'STR','serverData':'STR','record':true,'role':'STR','kurentoOptions':null,'rtspUri':null,'adaptativeBitrate':null,'onlyPlayWithSubscribers':null,'networkCache':null,'clientData':null,'publishers':null,'subscribers':null}";
+	final protected String DEFAULT_JSON_PENDING_CONNECTION = "{'id':'STR','object':'connection','type':'WEBRTC','status':'pending','connectionId':'STR','sessionId':'STR','createdAt':0,'activeAt':null,'location':null,'ip':null,'platform':null,'token':'STR','serverData':'STR','record':true,'role':'STR','kurentoOptions':null,'rtspUri':null,'adaptativeBitrate':null,'onlyPlayWithSubscribers':null,'networkCache':null,'clientData':null,'publishers':null,'subscribers':null, 'customIceServers':[]}";
-	final protected String DEFAULT_JSON_ACTIVE_CONNECTION = "{'id':'STR','object':'connection','type':'WEBRTC','status':'active','connectionId':'STR','sessionId':'STR','createdAt':0,'activeAt':0,'location':'STR','ip':'STR','platform':'STR','token':'STR','serverData':'STR','record':true,'role':'STR','kurentoOptions':null,'rtspUri':null,'adaptativeBitrate':null,'onlyPlayWithSubscribers':null,'networkCache':null,'clientData':'STR','publishers':[],'subscribers':[]}";
+	final protected String DEFAULT_JSON_ACTIVE_CONNECTION = "{'id':'STR','object':'connection','type':'WEBRTC','status':'active','connectionId':'STR','sessionId':'STR','createdAt':0,'activeAt':0,'location':'STR','ip':'STR','platform':'STR','token':'STR','serverData':'STR','record':true,'role':'STR','kurentoOptions':null,'rtspUri':null,'adaptativeBitrate':null,'onlyPlayWithSubscribers':null,'networkCache':null,'clientData':'STR','publishers':[],'subscribers':[], 'customIceServers':[]}";
-	final protected String DEFAULT_JSON_IPCAM_CONNECTION = "{'id':'STR','object':'connection','type':'IPCAM','status':'active','connectionId':'STR','sessionId':'STR','createdAt':0,'activeAt':0,'location':'STR','ip':'STR','platform':'IPCAM','token':null,'serverData':'STR','record':true,'role':null,'kurentoOptions':null,'rtspUri':'STR','adaptativeBitrate':true,'onlyPlayWithSubscribers':true,'networkCache':2000,'clientData':null,'publishers':[],'subscribers':[]}";
+	final protected String DEFAULT_JSON_IPCAM_CONNECTION = "{'id':'STR','object':'connection','type':'IPCAM','status':'active','connectionId':'STR','sessionId':'STR','createdAt':0,'activeAt':0,'location':'STR','ip':'STR','platform':'IPCAM','token':null,'serverData':'STR','record':true,'role':null,'kurentoOptions':null,'rtspUri':'STR','adaptativeBitrate':true,'onlyPlayWithSubscribers':true,'networkCache':2000,'clientData':null,'publishers':[],'subscribers':[], 'customIceServers':[]}";
 	final protected String DEFAULT_JSON_TOKEN = "{'id':'STR','token':'STR','connectionId':'STR','createdAt':0,'session':'STR','role':'STR','data':'STR','kurentoOptions':{}}";
 
 	protected static String OPENVIDU_SECRET = "MY_SECRET";

openvidu-test-e2e/src/test/java/io/openvidu/test/e2e/OpenViduTestAppE2eTest.java

@@ -35,6 +35,8 @@ import java.util.concurrent.TimeoutException;
 import java.util.function.BiFunction;
 import java.util.stream.Collectors;
 
+import com.google.gson.*;
+import io.openvidu.java.client.*;
 import org.apache.http.HttpStatus;
 import org.junit.Assert;
 import org.junit.jupiter.api.BeforeAll;
@@ -49,35 +51,15 @@ import org.openqa.selenium.Dimension;
 import org.openqa.selenium.Keys;
 import org.openqa.selenium.WebDriver;
 import org.openqa.selenium.WebElement;
+import org.openqa.selenium.interactions.Actions;
 import org.openqa.selenium.support.ui.ExpectedCondition;
 import org.openqa.selenium.support.ui.ExpectedConditions;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 
-import com.google.gson.JsonArray;
-import com.google.gson.JsonNull;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
 import com.mashape.unirest.http.HttpMethod;
 
 import io.appium.java_client.AppiumDriver;
-import io.openvidu.java.client.Connection;
-import io.openvidu.java.client.ConnectionProperties;
-import io.openvidu.java.client.ConnectionType;
-import io.openvidu.java.client.KurentoOptions;
-import io.openvidu.java.client.MediaMode;
-import io.openvidu.java.client.OpenVidu;
-import io.openvidu.java.client.OpenViduHttpException;
-import io.openvidu.java.client.OpenViduJavaClientException;
-import io.openvidu.java.client.OpenViduRole;
-import io.openvidu.java.client.Publisher;
-import io.openvidu.java.client.Recording;
 import io.openvidu.java.client.Recording.OutputMode;
-import io.openvidu.java.client.RecordingLayout;
-import io.openvidu.java.client.RecordingMode;
-import io.openvidu.java.client.RecordingProperties;
-import io.openvidu.java.client.Session;
-import io.openvidu.java.client.SessionProperties;
-import io.openvidu.java.client.VideoCodec;
 import io.openvidu.test.browsers.BrowserUser;
 import io.openvidu.test.browsers.utils.BrowserNames;
 import io.openvidu.test.browsers.utils.CustomHttpClient;
@@ -3002,6 +2984,20 @@ public class OpenViduTestAppE2eTest extends AbstractOpenViduTestappE2eTest {
 		body = "{'type':'WEBRTC','role':'MODERATOR','data':true}";
 		restClient.rest(HttpMethod.POST, "/openvidu/api/sessions/CUSTOM_SESSION_ID/connection", body,
 				HttpStatus.SC_BAD_REQUEST);
+
+		// 400 - Test some not valid customIceServers configured
+		body = "{'customIceServers': [{'url':'bad-ice-server'}]}";
+		restClient.rest(HttpMethod.POST, "/openvidu/api/sessions/CUSTOM_SESSION_ID/connection", body,
+				HttpStatus.SC_BAD_REQUEST);
+
+		body = "{'customIceServers': [{'url':'turn:bad-ice-server'}]}";
+		restClient.rest(HttpMethod.POST, "/openvidu/api/sessions/CUSTOM_SESSION_ID/connection", body,
+				HttpStatus.SC_BAD_REQUEST);
+
+		body = "{'customIceServers': [{'url':'bad-prefix:bad-ice-server'}]}";
+		restClient.rest(HttpMethod.POST, "/openvidu/api/sessions/CUSTOM_SESSION_ID/connection", body,
+				HttpStatus.SC_BAD_REQUEST);
+
 		// 200
 		String kurentoOpts = "'kurentoOptions':{'videoMaxSendBandwidth':777,'allowedFilters':['GStreamerFilter']}";
 		body = "{'type':'WEBRTC','role':'MODERATOR','data':'SERVER_DATA'," + kurentoOpts + "}";
@@ -3011,6 +3007,18 @@ public class OpenViduTestAppE2eTest extends AbstractOpenViduTestappE2eTest {
 		restClient.rest(HttpMethod.DELETE,
 				"/openvidu/api/sessions/CUSTOM_SESSION_ID/connection/" + res.get("id").getAsString(),
 				HttpStatus.SC_NO_CONTENT);
+
+		// 200 - Test some good Ice Servers configured
+		String goodTurn = "{'url': 'turn:valid-domain.es', 'username': 'user', 'credential': 'pass'}";
+		String goodStun = "{'url': 'stun:valid-domain.es:1234'}";
+		body = "{ 'customIceServers': [" + goodTurn + "," + goodStun + "]}";
+		res = restClient.rest(HttpMethod.POST, "/openvidu/api/sessions/CUSTOM_SESSION_ID/connection", body,
+				HttpStatus.SC_OK, true, false, true,
+				mergeJson(DEFAULT_JSON_PENDING_CONNECTION, "{ 'customIceServers': [" + goodTurn + "," + goodStun+ "] }", new String[0]));
+		restClient.rest(HttpMethod.DELETE,
+				"/openvidu/api/sessions/CUSTOM_SESSION_ID/connection/" + res.get("id").getAsString(),
+				HttpStatus.SC_NO_CONTENT);
+
 		// Default values
 		res = restClient.rest(HttpMethod.POST, "/openvidu/api/sessions/CUSTOM_SESSION_ID/connection", "{}",
 				HttpStatus.SC_OK);
@@ -4373,7 +4381,8 @@ public class OpenViduTestAppE2eTest extends AbstractOpenViduTestappE2eTest {
 				connectionJson.get("subscribers").getAsJsonArray().size() == 0);
 		Assert.assertTrue("Wrong token Connection property",
 				connectionJson.get("token").getAsString().contains(session.getSessionId()));
-		Assert.assertEquals("Wrong number of keys in connectionProperties", 9, connectionProperties.keySet().size());
+		Assert.assertEquals("Wrong number of keys in connectionProperties", 10, connectionProperties.keySet().size());
+		Assert.assertTrue("Wrong customIceServer property", connectionProperties.get("customIceServers").getAsJsonArray().size() == 0);
 		Assert.assertEquals("Wrong type property", ConnectionType.WEBRTC.name(),
 				connectionProperties.get("type").getAsString());
 		Assert.assertEquals("Wrong data property", "MY_SERVER_DATA", connectionProperties.get("data").getAsString());
@@ -4489,7 +4498,216 @@ public class OpenViduTestAppE2eTest extends AbstractOpenViduTestappE2eTest {
 		Assert.assertFalse("Java fetch should be false", OV.fetch());
 		checkNodeFetchChanged(user, false, true);
 		checkNodeFetchChanged(user, false, false);
+	}
+
+	@Test
+	@DisplayName("Custom Ice Server connection tests from openvidu-java-client")
+	void customIceServerConnectionJavaClientTest() throws Exception {
+		customIceServerTest("openvidu-java-client");
+	}
+
+	@Test
+	@DisplayName("Custom Ice Server connection tests from openvidu-node-client")
+	void customIceServerConnectionNodeClientTest() throws Exception {
+		customIceServerTest("openvidu-node-client");
+	}
+
+	private void customIceServerTest(String client) throws Exception {
+		OpenViduTestappUser user = setupBrowserAndConnectToOpenViduTestapp("chrome");
+
+		// ------
+		// 1. Initialize connection with Custom Ice Servers from openvidu-java-client
+		// ------
+		Session session = OV.createSession();
+		String sessionId1 = session.getSessionId();
+
+		Assert.assertFalse("Java fetch should be false", OV.fetch());
+		Assert.assertFalse("Session fetch should be false", session.fetch());
+		user.getDriver().findElement(By.id("add-user-btn")).click();
+		WebElement sessionName1 = user.getDriver().findElement(By.id("session-name-input-0"));
+		sessionName1.clear();
+		sessionName1.sendKeys(session.getSessionId());
+		user.getDriver().findElements(By.className("join-btn")).forEach(el -> el.sendKeys(Keys.ENTER));
+		user.getEventManager().waitUntilEventReaches("connectionCreated", 1);
+		user.getEventManager().waitUntilEventReaches("accessAllowed", 1);
+		user.getEventManager().waitUntilEventReaches("streamCreated", 1);
+		user.getEventManager().waitUntilEventReaches("streamPlaying", 1);
+
+		session.fetch();
+		Assert.assertEquals(session.getActiveConnections().size(), 1);
+
+		// Add second user with connection using custom ice servers
+		Connection connection1 = createConnWithCustomIceServer(session, user, client);
+		user.getDriver().findElement(By.id("add-user-btn")).click();
+		WebElement sessionName2 = user.getDriver().findElement(By.id("session-name-input-1"));
+		sessionName2.clear();
+		sessionName2.sendKeys(sessionId1);
+
+		user.getDriver().findElement(By.id("session-settings-btn-1")).click();
+		Thread.sleep(1000);
+
+		WebElement token1Input = user.getDriver().findElement(By.cssSelector("#custom-token-div input"));
+		token1Input.clear();
+		token1Input.sendKeys(connection1.getToken());
+
+		user.getDriver().findElement(By.id("save-btn")).click();
+		Thread.sleep(1000);
+		user.getDriver().findElements(By.className("join-btn"))
+				.stream().filter(el -> el.isEnabled()).forEach(el -> el.sendKeys(Keys.ENTER));
+		user.getEventManager().waitUntilEventReaches("connectionCreated", 4);
+		user.getEventManager().waitUntilEventReaches("accessAllowed", 2);
+		user.getEventManager().waitUntilEventReaches("streamCreated", 4);
+		user.getEventManager().waitUntilEventReaches("streamPlaying", 4);
+
+		// ------
+		// 2. Check that the IceServer is correctly setup on RTCPeerConnections created. This will ensure that the property
+		// is reached in WebRTC browser related objects
+		// ------
+		List<WebElement> iceConfiguredButtons = user.getDriver().findElements(By.className("ice-config-button-" + connection1.getConnectionId()));
+		for (WebElement iceConfigured : iceConfiguredButtons) {
+			iceConfigured.click();
+			Thread.sleep(1000);
+			for(int i = 0; i < connection1.getCustomIceServers().size(); i++) {
+				IceServerProperties customIceServer = connection1.getCustomIceServers().get(i);
+				String foundIceUrl = user.getDriver().findElement(By.id("ice-server-url-" + i)).getText();
+				String foundIceUsername = null, foundIceCred = null;
+				List<WebElement> foundIceUsernameWebElem = user.getDriver().findElements(By.id("ice-server-username-" + i));
+				List<WebElement> foundIceCredWebElem = user.getDriver().findElements(By.id("ice-server-credential-" + i));
+				if (foundIceUsernameWebElem.size() == 1) {
+					foundIceUsername = foundIceUsernameWebElem.get(0).getText();
+				}
+				if (foundIceCredWebElem.size() == 1) {
+					foundIceCred = foundIceCredWebElem.get(0).getText();
+				}
+				Assert.assertEquals(foundIceUrl, customIceServer.getUrl());
+				Assert.assertEquals(foundIceUsername, customIceServer.getUsername());
+				Assert.assertEquals(foundIceCred, customIceServer.getCredential());
+			}
+			user.getDriver().findElement(By.id("close-dialog-btn")).click();
+			Thread.sleep(1000);
+		}
+
+		// ------
+		// 3. Check that the data in openvidu-node-client is correctly fetched
+		// ------
+		user.getDriver().findElement(By.id("session-api-btn-0")).click();
+		Thread.sleep(1000);
+		checkNodeFetchChanged(user, false, true);
+		checkNodeFetchChanged(user, false, false);
 		checkNodeFetchChanged(user, true, false);
+
+		// ------
+		// 4. Check if Ice Servers are correctly received in openvidu-node-client
+		// ------
+		user.getDriver().findElement(By.id("close-dialog-btn")).click();
+		Thread.sleep(1000);
+		user.getDriver().findElement(By.id("session-info-btn-0")).click();
+
+		// 4.1. Get all session data
+		JsonObject res = JsonParser
+				.parseString(user.getDriver().findElement(By.id("session-text-area")).getAttribute("value"))
+				.getAsJsonObject();
+
+		JsonArray connectionsJsonArray = res.get("connections").getAsJsonArray();
+		boolean foundConnection = false;
+		for (JsonElement connectionJson: connectionsJsonArray) {
+			// 4.2. Of all connections, get only the one created with openvidu-java-client with customIceServers added
+			// Check if connection is the one configured from java client
+			String connectionId = connectionJson.getAsJsonObject().get("connectionId").getAsString();
+			if (connectionId.equals(connection1.getConnectionId())) {
+				// 4.3. If connection with custom ice server is found, get the property with all customIceServers
+				foundConnection = true;
+				JsonArray customIceServersJsonArray = connectionJson.getAsJsonObject()
+						.get("connectionProperties").getAsJsonObject()
+						.get("customIceServers").getAsJsonArray();
+				for (IceServerProperties customIceServer: connection1.getCustomIceServers()) {
+					// 4.4 Compare both list, the one created with openvidu-java-client with the one received from openvidu-node-client
+					boolean foundIceServer = false;
+					Iterator<JsonElement> customIceServersJsonIterator = customIceServersJsonArray.iterator();
+					while(customIceServersJsonIterator.hasNext() && !foundIceServer) {
+						// 4.5 When the custom ICE server is found in the openvidu-node-client object, compare it with the
+						// openvidu-java-client object
+						JsonObject customIceJsonObject = customIceServersJsonIterator.next().getAsJsonObject();
+						String url = customIceJsonObject.get("url").getAsString();
+						if (url.equals(customIceServer.getUrl())) {
+							foundIceServer = true;
+							Assert.assertEquals(customIceServer.getUrl(), customIceJsonObject.get("url").getAsString());
+							if (customIceJsonObject.get("username") != null) {
+								Assert.assertEquals(customIceServer.getUsername(), customIceJsonObject.get("username").getAsString());
+							}
+							if (customIceJsonObject.get("credential") != null) {
+								Assert.assertEquals(customIceServer.getCredential(), customIceJsonObject.get("credential").getAsString());
+							}
+						}
+					}
+					// 4.6 Assert that the custom Ice Server was found on the openvidu-node-client connection object
+					Assert.assertTrue(foundIceServer);
+				}
+			}
+
+		}
+		// 4.7 Assert that the connection was found on the openvidu-node-client session object, to fail in case it was not registered
+		Assert.assertTrue(foundConnection);
+	}
+
+	private Connection createConnWithCustomIceServer(Session session, OpenViduTestappUser user, String fromClient)
+			throws OpenViduJavaClientException, OpenViduHttpException, InterruptedException {
+		if (fromClient.equals("openvidu-java-client")) {
+			IceServerProperties iceServerProperties1 = new IceServerProperties.Builder()
+					.url("turn:turn-server.com")
+					.username("usertest")
+					.credential("credtest")
+					.build();
+			IceServerProperties iceServerProperties2 = new IceServerProperties.Builder()
+					.url("stun:1.2.3.4:1234")
+					.build();
+			ConnectionProperties connectionProperties = new ConnectionProperties.Builder()
+					.addCustomIceServer(iceServerProperties1)
+					.addCustomIceServer(iceServerProperties2)
+					.build();
+			return session.createConnection(connectionProperties);
+		} else if (fromClient.equals("openvidu-node-client")) {
+			user.getDriver().findElement(By.id("session-api-btn-0")).click();
+			Thread.sleep(1000);
+			user.getDriver().findElement(By.id("num-ice-servers-select")).click();
+			Thread.sleep(500);
+			user.getDriver().findElement(By.id("num-ice-servers-2")).click();
+			Thread.sleep(500);
+			WebElement iceUrl1 = user.getDriver().findElement(By.id("ice-server-url-0"));
+			WebElement iceUsername1 = user.getDriver().findElement(By.id("ice-server-username-0"));
+			WebElement iceCredential1 = user.getDriver().findElement(By.id("ice-server-credential-0"));
+			WebElement iceUrl2 = user.getDriver().findElement(By.id("ice-server-url-1"));
+			iceUrl1.clear();
+			iceUsername1.clear();
+			iceCredential1.clear();
+			iceUrl2.clear();
+			iceUrl1.sendKeys("turn:turn-server.com");
+			iceUsername1.sendKeys("usertest");
+			iceCredential1.sendKeys("credtest");
+			iceUrl2.sendKeys("stun:1.2.3.4:1234");
+
+			// Create connection
+			user.getDriver().findElement(By.id("crate-connection-api-btn")).click();
+			Thread.sleep(1000);
+			String responseAreaText = user.getDriver().findElement(By.id("api-response-text-area")).getAttribute("value");
+			user.getDriver().findElement(By.id("close-dialog-btn")).click();
+			String connectionCreatedPrefix = "Connection created: ";
+			Assert.assertTrue(responseAreaText.startsWith(connectionCreatedPrefix));
+			String connectionStringResponse = responseAreaText.split(connectionCreatedPrefix, 2)[1];
+			JsonObject connectionJsonResponse = JsonParser.parseString(connectionStringResponse).getAsJsonObject();
+			String connectionId = connectionJsonResponse.get("connectionId").getAsString();
+			Assert.assertTrue(session.fetch());
+			Assert.assertFalse(session.fetch());
+			Assert.assertFalse(OV.fetch());
+			for (Connection connection: session.getConnections()) {
+				if (connection.getConnectionId().equals(connectionId)) {
+					return connection;
+				}
+			}
+			return null;
+		} else {
+			return null;
+		}
 	}
 
 	@Test

openvidu-testapp/src/app/app.module.ts

@@ -33,6 +33,7 @@ import { OpenviduParamsService } from './services/openvidu-params.service';
 import { TestFeedService } from './services/test-feed.service';
 import { MuteSubscribersService } from './services/mute-subscribers.service';
 import { SessionInfoDialogComponent } from "./components/dialogs/session-info-dialog/session-info-dialog.component";
+import { ShowIceServerConfiguredDialog } from './components/dialogs/show-configured-ice/show-configured-ice.component';
 
 @NgModule({
   declarations: [
@@ -53,6 +54,7 @@ import { SessionInfoDialogComponent } from "./components/dialogs/session-info-di
     ScenarioPropertiesDialogComponent,
     FilterDialogComponent,
     ShowCodecDialogComponent,
+    ShowIceServerConfiguredDialog,
     SessionInfoDialogComponent,
     UsersTableComponent,
     TableVideoComponent
@@ -82,6 +84,7 @@ import { SessionInfoDialogComponent } from "./components/dialogs/session-info-di
     ScenarioPropertiesDialogComponent,
     FilterDialogComponent,
     ShowCodecDialogComponent,
+    ShowIceServerConfiguredDialog,
     SessionInfoDialogComponent
   ],
   bootstrap: [AppComponent]

openvidu-testapp/src/app/components/dialogs/session-api-dialog/session-api-dialog.component.css

@@ -39,3 +39,12 @@ mat-dialog-content button {
   top: 0;
   right: 0;
 }
+
+#manual-turn-div {
+  background-color: #f7f7f7;
+  margin-top: 10px;
+  margin-bottom: 10px;
+  padding: 5px;
+  border: 1px solid #00000026;
+  border-radius: 3px;
+}

openvidu-testapp/src/app/components/dialogs/session-api-dialog/session-api-dialog.component.html

@@ -30,6 +30,27 @@
         <input matInput id="connection-data-field" placeholder="data" [(ngModel)]="connectionProperties.data">
       </mat-form-field>
     </div>
+    <div>
+      <mat-form-field class="inner-text-input" [style.fontSize.px]=14 style="width:33%">
+        <mat-label>Custom Ice Servers</mat-label>
+        <mat-select [(ngModel)]="numCustomIceServers" id="num-ice-servers-select" (selectionChange)="changedNumIceServers(numCustomIceServers)">
+          <mat-option *ngFor="let i of [0,1,2,3,4,5,6,7,8,9,10]" [value]="i">
+            <span [attr.id]="'num-ice-servers-' + i">{{ i }}</span>
+          </mat-option>
+        </mat-select>
+      </mat-form-field>
+        <div id="manual-turn-div" *ngFor="let configuredIce of configuredCustomIceServers; let i = index">
+          <mat-form-field style="width: 100%">
+            <input matInput id="ice-server-url-{{i}}" placeholder="url" type="text" [(ngModel)]="configuredIce.url">
+          </mat-form-field>
+          <mat-form-field style="width: 48%; padding-right: 2px">
+            <input matInput id="ice-server-username-{{i}}" placeholder="username" type="text" [(ngModel)]="configuredIce.username">
+          </mat-form-field>
+          <mat-form-field style="width: 48%; padding-left: 2px">
+            <input matInput id="ice-server-credential-{{i}}" placeholder="credential" type="text" [(ngModel)]="configuredIce.credential">
+          </mat-form-field>
+      </div>
+    </div>
     <div>
       <button mat-button id="crate-connection-api-btn" (click)="createConnection()">Create connection</button>
       <button mat-button id="update-connection-api-btn" (click)="updateConnection()" [disabled]="!connectionId">Update

openvidu-testapp/src/app/components/dialogs/session-api-dialog/session-api-dialog.component.ts

@@ -23,6 +23,8 @@ export class SessionApiDialogComponent {
     customLayout = '';
     recPropertiesIcon = 'add_circle';
     showRecProperties = false;
+    numCustomIceServers = 0;
+    configuredCustomIceServers = []
 
     connectionProperties: ConnectionProperties = {
         record: true,
@@ -205,6 +207,7 @@ export class SessionApiDialogComponent {
 
     createConnection() {
         console.log('Creating connection');
+        this.connectionProperties.customIceServers = this.configuredCustomIceServers;
         this.session.createConnection(this.connectionProperties)
             .then(connection => {
                 this.response = 'Connection created: ' + JSON.stringify(connection);
@@ -238,4 +241,23 @@ export class SessionApiDialogComponent {
         this.recPropertiesIcon = this.showRecProperties ? 'remove_circle' : 'add_circle';
     }
 
+    changedNumIceServers(numIceServers: number) {
+        // Save Previous Ice Servers
+        let previousIceServers = [];
+        for (let i = 0; i < this.configuredCustomIceServers.length; i++) {
+            previousIceServers.push(this.configuredCustomIceServers[i]);
+        }
+
+        // Fill empty ice servers
+        this.configuredCustomIceServers = []
+        for(let i = 1; i <= numIceServers; i++) {
+            this.configuredCustomIceServers.push({});
+        }
+
+        // Add previous items
+        for(let i = 0; i < previousIceServers.length && i < this.configuredCustomIceServers.length; i++) {
+            this.configuredCustomIceServers[0] = previousIceServers[0];
+        }
+    }
+
 }

openvidu-testapp/src/app/components/dialogs/show-configured-ice/show-configured-ice.component.ts

@@ -0,0 +1,37 @@
+import { Component, Inject } from '@angular/core';
+import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
+
+
+@Component({
+  selector: 'app-ice-configured-dialog',
+  template: `
+        <div id="app-ice-configured-dialog-container">
+            <ul id="ice-server-list">
+              <div class="ice-server" *ngFor="let iceServer of iceServerList; index as i">
+                <li id="ice-server-{{i}}">
+                  <p>
+                  ICE Server URL: <span id="ice-server-url-{{i}}">{{iceServer.urls}}</span> -
+                  Username: <span *ngIf="iceServer.username" id="ice-server-username-{{i}}">{{iceServer.username}}</span> -
+                  Credential: <span *ngIf="iceServer.credential" id="ice-server-credential-{{i}}">{{iceServer.credential}}</span>
+                  </p>
+                </li>
+              </div>
+              <button mat-button id="close-dialog-btn" [mat-dialog-close]="{}">CLOSE</button>
+          </ul>
+        </div>
+    `,
+  styles: [`
+        #app-ice-configured-dialog-container {
+            text-align: center
+        }
+    `]
+})
+export class ShowIceServerConfiguredDialog {
+
+  iceServerList: RTCIceServer[]
+
+  constructor(public dialogRef: MatDialogRef<ShowIceServerConfiguredDialog>,
+    @Inject(MAT_DIALOG_DATA) public data) {
+    this.iceServerList = data.iceServerList;
+  }
+}

openvidu-testapp/src/app/components/video/video.component.html

@@ -11,6 +11,11 @@
             <button class="video-btn stats-button bottom-left-rounded" title="Peer Connection Stats" (click)="showCodecUsed()">
               <mat-icon aria-label="Peer Connection Stats" class="mat-icon material-icons" role="img" aria-hidden="true">info</mat-icon>
             </button>
+            <button *ngIf="OV.session.connection.connectionId"
+              class="video-btn bottom-left-rounded ice-config-button-{{OV.session.connection.connectionId}}"
+              title="Ice Server configuration" (click)="getConfiguredIceServer()">
+              <mat-icon aria-label="Ice Server configuration" class="mat-icon material-icons" role="img" aria-hidden="true">storage</mat-icon>
+            </button>
         </div>
         <div class="bottom-div">
             <button class="video-btn pub-btn" title="Publish/Unpublish" (click)="pubUnpub()">
@@ -53,6 +58,11 @@
             <button class="video-btn stats-button bottom-left-rounded" title="Peer Connection Stats" (click)="showCodecUsed()">
               <mat-icon aria-label="Peer Connection Stats" class="mat-icon material-icons" role="img" aria-hidden="true">info</mat-icon>
             </button>
+            <button *ngIf="OV.session.connection.connectionId"
+              class="video-btn bottom-left-rounded ice-config-button-{{OV.session.connection.connectionId}}"
+              title="Ice Server configuration" (click)="getConfiguredIceServer()">
+              <mat-icon aria-label="Ice Server configuration" class="mat-icon material-icons" role="img" aria-hidden="true">storage</mat-icon>
+            </button>
         </div>
         <div class="bottom-div">
             <button class="video-btn sub-btn" title="Subscribe/Unsubscribe" (click)="subUnsub()">

openvidu-testapp/src/app/components/video/video.component.ts

@@ -23,6 +23,7 @@ import { LocalRecordingDialogComponent } from '../dialogs/local-recording-dialog
 import { ExtensionDialogComponent } from '../dialogs/extension-dialog/extension-dialog.component';
 import { FilterDialogComponent } from '../dialogs/filter-dialog/filter-dialog.component';
 import { OpenViduEvent } from '../openvidu-instance/openvidu-instance.component';
+import { ShowIceServerConfiguredDialog } from '../dialogs/show-configured-ice/show-configured-ice.component';
 
 @Component({
     selector: 'app-video',
@@ -813,6 +814,16 @@ export class VideoComponent implements OnInit, OnDestroy {
           });
       }
 
+      getConfiguredIceServer() {
+        let iceServerList: RTCIceServer[] = this.streamManager.stream.getWebRtcPeer().pc.getConfiguration().iceServers;
+        this.dialog.open(ShowIceServerConfiguredDialog, {
+          data: {
+            iceServerList: iceServerList
+          },
+          width: '450px'
+        })
+      }
+
       async showCodecUsed() {
           let stats = await this.streamManager.stream.getWebRtcPeer().pc.getStats();
           let codecIdIndex = null;