Jitsi Videobridge is a WebRTC-compatible Selective Forwarding Unit (SFU) that routes video streams between participants. Here's a comprehensive guide to building a Jitsi Videobridge client in Java.
Approaches Overview
- Jitsi Meet API Integration - Using Jitsi's JavaScript API with Java backend
- WebRTC Java Libraries - Direct WebRTC implementation
- JVB REST API Client - Managing conferences programmatically
- Custom WebSocket Client - Direct JVB communication
Approach 1: Jitsi Meet API Integration with Java Backend
Dependencies
<dependency> <groupId>org.java-websocket</groupId> <artifactId>Java-WebSocket</artifactId> <version>1.5.3</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.15.0</version> </dependency> <dependency> <groupId>org.apache.httpcomponents.client5</groupId> <artifactId>httpclient5</artifactId> <version>5.2.1</version> </dependency>
Example 1: Basic Jitsi Conference Manager
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.classic.methods.HttpPost;
import org.apache.hc.client5.http.entity.UrlEncodedFormEntity;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.core5.http.NameValuePair;
import org.apache.hc.core5.http.message.BasicNameValuePair;
import java.util.*;
public class JitsiConferenceManager {
private final String jitsiDomain;
private final CloseableHttpClient httpClient;
private final ObjectMapper objectMapper;
public JitsiConferenceManager(String jitsiDomain) {
this.jitsiDomain = jitsiDomain;
this.httpClient = HttpClients.createDefault();
this.objectMapper = new ObjectMapper();
}
public static class ConferenceInfo {
public String conferenceId;
public String roomName;
public int participantCount;
public Map<String, Object> properties;
public ConferenceInfo(String conferenceId, String roomName) {
this.conferenceId = conferenceId;
this.roomName = roomName;
this.properties = new HashMap<>();
}
}
public ConferenceInfo createConference(String roomName) throws Exception {
// Generate a unique conference ID
String conferenceId = generateConferenceId(roomName);
ConferenceInfo conference = new ConferenceInfo(conferenceId, roomName);
conference.properties.put("createdAt", new Date());
conference.properties.put("moderator", true);
System.out.println("Created conference: " + conferenceId + " for room: " + roomName);
return conference;
}
public String generateJitsiMeetURL(ConferenceInfo conference) {
String baseURL = "https://" + jitsiDomain + "/";
String roomName = conference.roomName.replaceAll("[^a-zA-Z0-9]", "");
// Add configuration parameters
Map<String, String> config = new HashMap<>();
config.put("prejoinPageEnabled", "false");
config.put("startWithAudioMuted", "true");
config.put("startWithVideoMuted", "false");
StringBuilder urlBuilder = new StringBuilder(baseURL).append(roomName);
// Add config parameters
config.forEach((key, value) -> {
urlBuilder.append(urlBuilder.indexOf("?") == -1 ? "?" : "&")
.append("config.").append(key).append("=").append(value);
});
// Add user info if available
if (conference.properties.containsKey("displayName")) {
urlBuilder.append("&userInfo.displayName=")
.append(conference.properties.get("displayName"));
}
return urlBuilder.toString();
}
public Map<String, Object> getConferenceStatistics(String conferenceId) throws Exception {
String statsUrl = "http://" + jitsiDomain + ":8080/colibri/stats";
HttpGet request = new HttpGet(statsUrl);
try (CloseableHttpResponse response = httpClient.execute(request)) {
if (response.getCode() == 200) {
return objectMapper.readValue(response.getEntity().getContent(), Map.class);
} else {
throw new RuntimeException("Failed to get conference stats: " + response.getCode());
}
}
}
public boolean endConference(String conferenceId) throws Exception {
// Jitsi conferences automatically end when all participants leave
// This is a placeholder for custom conference management
System.out.println("Ending conference: " + conferenceId);
return true;
}
private String generateConferenceId(String roomName) {
return roomName + "_" + System.currentTimeMillis() + "_" +
UUID.randomUUID().toString().substring(0, 8);
}
public static void main(String[] args) {
try {
JitsiConferenceManager manager = new JitsiConferenceManager("meet.jit.si");
// Create a conference
ConferenceInfo conference = manager.createConference("TestRoom123");
conference.properties.put("displayName", "Java Client User");
// Generate Jitsi Meet URL
String meetURL = manager.generateJitsiMeetURL(conference);
System.out.println("Join the meeting: " + meetURL);
// Get conference statistics
Map<String, Object> stats = manager.getConferenceStatistics(conference.conferenceId);
System.out.println("Conference stats: " + stats);
} catch (Exception e) {
e.printStackTrace();
}
}
}
Approach 2: WebRTC Java Client with Jitsi Videobridge
Example 2: WebRTC Client Implementation
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.handshake.ServerHandshake;
import javax.json.*;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class JitsiWebRTCClient {
private WebSocketClient webSocketClient;
private final String jitsiDomain;
private final String roomName;
private String participantId;
private boolean connected = false;
private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(2);
private final ConcurrentHashMap<String, Object> sessionData = new ConcurrentHashMap<>();
public JitsiWebRTCClient(String jitsiDomain, String roomName) {
this.jitsiDomain = jitsiDomain;
this.roomName = roomName;
this.participantId = generateParticipantId();
}
public CompletableFuture<Boolean> connect() {
CompletableFuture<Boolean> future = new CompletableFuture<>();
try {
String wsUrl = "wss://" + jitsiDomain + "/xmpp-websocket";
webSocketClient = new WebSocketClient(new URI(wsUrl)) {
@Override
public void onOpen(ServerHandshake handshake) {
System.out.println("WebSocket connection opened");
connected = true;
future.complete(true);
// Start XMPP authentication and join room
authenticateAndJoin();
}
@Override
public void onMessage(String message) {
handleWebSocketMessage(message);
}
@Override
public void onClose(int code, String reason, boolean remote) {
System.out.println("WebSocket connection closed: " + reason);
connected = false;
future.completeExceptionally(new RuntimeException("Connection closed: " + reason));
}
@Override
public void onError(Exception ex) {
System.err.println("WebSocket error: " + ex.getMessage());
future.completeExceptionally(ex);
}
};
webSocketClient.connect();
} catch (URISyntaxException e) {
future.completeExceptionally(e);
}
return future;
}
private void authenticateAndJoin() {
// Simulate XMPP authentication and room joining
scheduler.schedule(() -> {
sendXMPPStanza(createPresenceStanza());
sendXMPPStanza(createJoinRoomStanza());
}, 1, TimeUnit.SECONDS);
}
private void handleWebSocketMessage(String message) {
try {
JsonReader reader = Json.createReader(new java.io.StringReader(message));
JsonObject jsonMessage = reader.readObject();
String messageType = jsonMessage.getString("type", "unknown");
switch (messageType) {
case "presence":
handlePresenceMessage(jsonMessage);
break;
case "iq":
handleIQMessage(jsonMessage);
break;
case "message":
handleChatMessage(jsonMessage);
break;
case "bridge":
handleBridgeMessage(jsonMessage);
break;
default:
System.out.println("Unknown message type: " + messageType);
}
} catch (Exception e) {
System.err.println("Error parsing WebSocket message: " + e.getMessage());
}
}
private void handlePresenceMessage(JsonObject presence) {
String from = presence.getString("from", "");
if (from.contains(roomName)) {
System.out.println("Participant presence update: " + from);
// Handle participant joining/leaving
}
}
private void handleIQMessage(JsonObject iq) {
String id = iq.getString("id", "");
String type = iq.getString("type", "");
if ("result".equals(type)) {
// Handle successful IQ result
System.out.println("IQ result received: " + id);
} else if ("set".equals(type)) {
// Handle IQ set (Jingle session initiation)
handleJingleSession(iq);
}
}
private void handleJingleSession(JsonObject jingleIQ) {
// Handle WebRTC session initiation via Jingle
System.out.println("Jingle session initiated");
// Extract SDP offer and ICE candidates
JsonObject jingle = jingleIQ.getJsonObject("jingle");
if (jingle != null) {
String action = jingle.getString("action", "");
String sid = jingle.getString("sid", "");
if ("session-initiate".equals(action)) {
// Create and send SDP answer
sendSDPAnswer(sid);
}
}
}
private void sendSDPAnswer(String sessionId) {
// Simulate SDP answer creation
JsonObjectBuilder sdpAnswer = Json.createObjectBuilder()
.add("type", "iq")
.add("to", roomName + "@conference." + jitsiDomain + "/focus")
.add("type", "set")
.add("id", "sdp_answer_" + System.currentTimeMillis())
.add("jingle", Json.createObjectBuilder()
.add("xmlns", "urn:xmpp:jingle:1")
.add("action", "session-accept")
.add("sid", sessionId)
.add("contents", Json.createArrayBuilder()
.add(Json.createObjectBuilder()
.add("name", "audio")
.add("creator", "initiator")
.add("description", Json.createObjectBuilder()
.add("xmlns", "urn:xmpp:jingle:apps:rtp:1")
.add("media", "audio"))
)
)
);
sendJsonMessage(sdpAnswer.build().toString());
}
private void handleBridgeMessage(JsonObject bridgeMessage) {
// Handle messages from Jitsi Videobridge
String colibriClass = bridgeMessage.getString("colibriClass", "");
switch (colibriClass) {
case "EndpointConnectedEvent":
System.out.println("Endpoint connected to bridge");
break;
case "EndpointMessage":
handleEndpointMessage(bridgeMessage);
break;
case "LastNEndpointsChangeEvent":
handleLastNChange(bridgeMessage);
break;
default:
System.out.println("Unknown bridge message: " + colibriClass);
}
}
private void handleEndpointMessage(JsonObject endpointMsg) {
// Handle messages from other participants
String from = endpointMsg.getString("from", "");
JsonObject data = endpointMsg.getJsonObject("data");
if (data != null) {
System.out.println("Message from " + from + ": " + data);
}
}
private void handleLastNChange(JsonObject lastNMsg) {
// Handle changes in forwarded video streams
JsonArray endpoints = lastNMsg.getJsonArray("lastNEndpoints");
System.out.println("Active video endpoints: " + endpoints);
}
private void sendXMPPStanza(String stanza) {
if (connected && webSocketClient != null) {
webSocketClient.send(stanza);
}
}
private void sendJsonMessage(String jsonMessage) {
if (connected && webSocketClient != null) {
webSocketClient.send(jsonMessage);
}
}
private String createPresenceStanza() {
return "<presence from='" + participantId + "@" + jitsiDomain + "/" +
generateResource() + "' to='" + roomName + "@conference." + jitsiDomain +
"/" + participantId + "' xmlns='jabber:client'/>";
}
private String createJoinRoomStanza() {
return "<iq type='set' id='join_room_1' from='" + participantId + "@" + jitsiDomain +
"/" + generateResource() + "' to='" + roomName + "@conference." + jitsiDomain +
"' xmlns='jabber:client'><query xmlns='http://jabber.org/protocol/muc#owner'>" +
"<x xmlns='jabber:x:data' type='submit'></x></query></iq>";
}
public void sendChatMessage(String message) {
JsonObjectBuilder chatMsg = Json.createObjectBuilder()
.add("type", "message")
.add("to", roomName + "@conference." + jitsiDomain)
.add("body", message)
.add("subject", "chat");
sendJsonMessage(chatMsg.build().toString());
}
public void setAudioMute(boolean muted) {
JsonObjectBuilder audioControl = Json.createObjectBuilder()
.add("type", "message")
.add("to", roomName + "@conference." + jitsiDomain)
.add("subject", "audioMute")
.add("muted", muted);
sendJsonMessage(audioControl.build().toString());
}
public void setVideoMute(boolean muted) {
JsonObjectBuilder videoControl = Json.createObjectBuilder()
.add("type", "message")
.add("to", roomName + "@conference." + jitsiDomain)
.add("subject", "videoMute")
.add("muted", muted);
sendJsonMessage(videoControl.build().toString());
}
public void disconnect() {
if (webSocketClient != null) {
webSocketClient.close();
}
scheduler.shutdown();
connected = false;
}
private String generateParticipantId() {
return "java-client-" + UUID.randomUUID().toString().substring(0, 8);
}
private String generateResource() {
return "java" + System.currentTimeMillis();
}
public boolean isConnected() {
return connected;
}
public static void main(String[] args) {
JitsiWebRTCClient client = new JitsiWebRTCClient("meet.jit.si", "TestJavaRoom");
client.connect().thenAccept(success -> {
if (success) {
System.out.println("Successfully connected to Jitsi room");
// Send a test chat message after 5 seconds
client.scheduler.schedule(() -> {
client.sendChatMessage("Hello from Java client!");
client.setAudioMute(false);
client.setVideoMute(false);
}, 5, TimeUnit.SECONDS);
// Disconnect after 30 seconds for demo
client.scheduler.schedule(client::disconnect, 30, TimeUnit.SECONDS);
} else {
System.err.println("Failed to connect to Jitsi room");
}
}).exceptionally(throwable -> {
System.err.println("Connection error: " + throwable.getMessage());
return null;
});
// Keep the program running
try {
Thread.sleep(35000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
Approach 3: JVB REST API Client
Example 3: Jitsi Videobridge REST API Client
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.classic.methods.HttpPost;
import org.apache.hc.client5.http.classic.methods.HttpDelete;
import org.apache.hc.client5.http.entity.StringEntity;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import java.util.*;
public class JVBClient {
private final String jvbBaseUrl;
private final CloseableHttpClient httpClient;
private final ObjectMapper objectMapper;
public JVBClient(String jvbHost, int jvbPort) {
this.jvbBaseUrl = "http://" + jvbHost + ":" + jvbPort;
this.httpClient = HttpClients.createDefault();
this.objectMapper = new ObjectMapper();
}
public static class Conference {
public String id;
public String name;
public List<Participant> participants;
public Map<String, Object> stats;
public Conference(String id, String name) {
this.id = id;
this.name = name;
this.participants = new ArrayList<>();
this.stats = new HashMap<>();
}
}
public static class Participant {
public String id;
public String endpoint;
public Map<String, Object> stats;
public Map<String, Object> channels;
public Participant(String id, String endpoint) {
this.id = id;
this.endpoint = endpoint;
this.stats = new HashMap<>();
this.channels = new HashMap<>();
}
}
public Map<String, Object> getJVBStatistics() throws Exception {
HttpGet request = new HttpGet(jvbBaseUrl + "/colibri/stats");
try (CloseableHttpResponse response = httpClient.execute(request)) {
if (response.getCode() == 200) {
String responseBody = EntityUtils.toString(response.getEntity());
return objectMapper.readValue(responseBody, Map.class);
} else {
throw new RuntimeException("Failed to get JVB stats: " + response.getCode());
}
}
}
public List<Conference> getActiveConferences() throws Exception {
HttpGet request = new HttpGet(jvbBaseUrl + "/colibri/conferences");
try (CloseableHttpResponse response = httpClient.execute(request)) {
if (response.getCode() == 200) {
String responseBody = EntityUtils.toString(response.getEntity());
Map<String, Object> conferencesData = objectMapper.readValue(responseBody, Map.class);
return parseConferences(conferencesData);
} else {
throw new RuntimeException("Failed to get conferences: " + response.getCode());
}
}
}
public Conference createConference(String conferenceId) throws Exception {
Map<String, Object> conferenceRequest = new HashMap<>();
conferenceRequest.put("id", conferenceId);
conferenceRequest.put("contents", Collections.emptyList());
String requestBody = objectMapper.writeValueAsString(conferenceRequest);
HttpPost request = new HttpPost(jvbBaseUrl + "/colibri/conferences");
request.setEntity(new StringEntity(requestBody));
request.setHeader("Content-Type", "application/json");
try (CloseableHttpResponse response = httpClient.execute(request)) {
if (response.getCode() == 200 || response.getCode() == 201) {
String responseBody = EntityUtils.toString(response.getEntity());
Map<String, Object> conferenceData = objectMapper.readValue(responseBody, Map.class);
return parseConference(conferenceData);
} else {
throw new RuntimeException("Failed to create conference: " + response.getCode());
}
}
}
public boolean shutdownConference(String conferenceId) throws Exception {
HttpDelete request = new HttpDelete(jvbBaseUrl + "/colibri/conferences/" + conferenceId);
try (CloseableHttpResponse response = httpClient.execute(request)) {
return response.getCode() == 200;
}
}
public Map<String, Object> getParticipantStats(String conferenceId, String participantId) throws Exception {
HttpGet request = new HttpGet(jvbBaseUrl + "/colibri/conferences/" + conferenceId +
"/participants/" + participantId + "/stats");
try (CloseableHttpResponse response = httpClient.execute(request)) {
if (response.getCode() == 200) {
String responseBody = EntityUtils.toString(response.getEntity());
return objectMapper.readValue(responseBody, Map.class);
} else {
throw new RuntimeException("Failed to get participant stats: " + response.getCode());
}
}
}
public boolean healthCheck() throws Exception {
HttpGet request = new HttpGet(jvbBaseUrl + "/about/health");
try (CloseableHttpResponse response = httpClient.execute(request)) {
return response.getCode() == 200;
}
}
public Map<String, Object> getVersion() throws Exception {
HttpGet request = new HttpGet(jvbBaseUrl + "/about/version");
try (CloseableHttpResponse response = httpClient.execute(request)) {
if (response.getCode() == 200) {
String responseBody = EntityUtils.toString(response.getEntity());
return objectMapper.readValue(responseBody, Map.class);
} else {
throw new RuntimeException("Failed to get version: " + response.getCode());
}
}
}
private List<Conference> parseConferences(Map<String, Object> conferencesData) {
List<Conference> conferences = new ArrayList<>();
if (conferencesData.containsKey("conferences")) {
@SuppressWarnings("unchecked")
List<Map<String, Object>> conferencesList =
(List<Map<String, Object>>) conferencesData.get("conferences");
for (Map<String, Object> confData : conferencesList) {
Conference conference = parseConference(confData);
conferences.add(conference);
}
}
return conferences;
}
private Conference parseConference(Map<String, Object> conferenceData) {
String conferenceId = (String) conferenceData.get("id");
Conference conference = new Conference(conferenceId, conferenceId);
// Parse participants
if (conferenceData.containsKey("contents")) {
@SuppressWarnings("unchecked")
List<Map<String, Object>> contents =
(List<Map<String, Object>>) conferenceData.get("contents");
for (Map<String, Object> content : contents) {
if ("participant".equals(content.get("name"))) {
parseParticipants(content, conference);
}
}
}
// Parse statistics
if (conferenceData.containsKey("stats")) {
@SuppressWarnings("unchecked")
Map<String, Object> stats = (Map<String, Object>) conferenceData.get("stats");
conference.stats.putAll(stats);
}
return conference;
}
private void parseParticipants(Map<String, Object> content, Conference conference) {
if (content.containsKey("channels")) {
@SuppressWarnings("unchecked")
List<Map<String, Object>> channels =
(List<Map<String, Object>>) content.get("channels");
for (Map<String, Object> channel : channels) {
String participantId = (String) channel.get("endpoint");
Participant participant = findOrCreateParticipant(conference, participantId);
// Add channel info
String channelType = (String) channel.get("channel-bundle-id");
participant.channels.put(channelType, channel);
}
}
}
private Participant findOrCreateParticipant(Conference conference, String participantId) {
return conference.participants.stream()
.filter(p -> p.id.equals(participantId))
.findFirst()
.orElseGet(() -> {
Participant newParticipant = new Participant(participantId, participantId);
conference.participants.add(newParticipant);
return newParticipant;
});
}
public static void main(String[] args) {
try {
// Connect to local JVB instance (default port 8080)
JVBClient jvbClient = new JVBClient("localhost", 8080);
// Health check
boolean healthy = jvbClient.healthCheck();
System.out.println("JVB Health: " + (healthy ? "OK" : "UNHEALTHY"));
if (healthy) {
// Get version info
Map<String, Object> version = jvbClient.getVersion();
System.out.println("JVB Version: " + version);
// Get statistics
Map<String, Object> stats = jvbClient.getJVBStatistics();
System.out.println("JVB Statistics: " + stats);
// Get active conferences
List<Conference> conferences = jvbClient.getActiveConferences();
System.out.println("Active conferences: " + conferences.size());
for (Conference conf : conferences) {
System.out.println("Conference: " + conf.id +
" Participants: " + conf.participants.size());
}
// Create a test conference
String testConfId = "test-conference-" + System.currentTimeMillis();
Conference newConference = jvbClient.createConference(testConfId);
System.out.println("Created conference: " + newConference.id);
// Clean up
jvbClient.shutdownConference(testConfId);
System.out.println("Conference shutdown: " + testConfId);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
Approach 4: Complete Jitsi Client Application
Example 4: Integrated Jitsi Client with GUI
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
public class JitsiClientApplication extends JFrame {
private JitsiWebRTCClient jitsiClient;
private JVBClient jvbAdminClient;
private ScheduledExecutorService scheduler;
// UI Components
private JTextArea logArea;
private JTextField roomField;
private JTextField domainField;
private JButton connectButton;
private JButton disconnectButton;
private JButton muteAudioButton;
private JButton muteVideoButton;
private JButton sendMessageButton;
private JTextField messageField;
public JitsiClientApplication() {
initializeUI();
scheduler = Executors.newScheduledThreadPool(2);
}
private void initializeUI() {
setTitle("Jitsi Java Client");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLayout(new BorderLayout());
// Control panel
JPanel controlPanel = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.insets = new Insets(5, 5, 5, 5);
gbc.gridx = 0; gbc.gridy = 0;
controlPanel.add(new JLabel("Domain:"), gbc);
gbc.gridx = 1;
domainField = new JTextField("meet.jit.si", 15);
controlPanel.add(domainField, gbc);
gbc.gridx = 0; gbc.gridy = 1;
controlPanel.add(new JLabel("Room:"), gbc);
gbc.gridx = 1;
roomField = new JTextField("JavaClientTest", 15);
controlPanel.add(roomField, gbc);
gbc.gridx = 0; gbc.gridy = 2; gbc.gridwidth = 2;
connectButton = new JButton("Connect");
connectButton.addActionListener(this::connectToRoom);
controlPanel.add(connectButton, gbc);
gbc.gridy = 3;
disconnectButton = new JButton("Disconnect");
disconnectButton.addActionListener(e -> disconnectFromRoom());
disconnectButton.setEnabled(false);
controlPanel.add(disconnectButton, gbc);
// Media controls
gbc.gridy = 4;
JPanel mediaPanel = new JPanel(new FlowLayout());
muteAudioButton = new JButton("Mute Audio");
muteVideoButton = new JButton("Mute Video");
muteAudioButton.addActionListener(e -> toggleAudioMute());
muteVideoButton.addActionListener(e -> toggleVideoMute());
muteAudioButton.setEnabled(false);
muteVideoButton.setEnabled(false);
mediaPanel.add(muteAudioButton);
mediaPanel.add(muteVideoButton);
controlPanel.add(mediaPanel, gbc);
// Chat panel
gbc.gridy = 5;
JPanel chatPanel = new JPanel(new BorderLayout());
messageField = new JTextField();
sendMessageButton = new JButton("Send");
sendMessageButton.addActionListener(e -> sendChatMessage());
sendMessageButton.setEnabled(false);
chatPanel.add(new JLabel("Message:"), BorderLayout.WEST);
chatPanel.add(messageField, BorderLayout.CENTER);
chatPanel.add(sendMessageButton, BorderLayout.EAST);
controlPanel.add(chatPanel, gbc);
add(controlPanel, BorderLayout.NORTH);
// Log area
logArea = new JTextArea(20, 50);
logArea.setEditable(false);
logArea.setBackground(Color.BLACK);
logArea.setForeground(Color.GREEN);
logArea.setFont(new Font("Monospaced", Font.PLAIN, 12));
add(new JScrollPane(logArea), BorderLayout.CENTER);
pack();
setLocationRelativeTo(null);
}
private void connectToRoom(ActionEvent e) {
String domain = domainField.getText().trim();
String room = roomField.getText().trim();
if (domain.isEmpty() || room.isEmpty()) {
log("Please enter both domain and room name");
return;
}
log("Connecting to room: " + room + " on domain: " + domain);
// Initialize clients
jitsiClient = new JitsiWebRTCClient(domain, room);
jvbAdminClient = new JVBClient("localhost", 8080); // For monitoring
connectButton.setEnabled(false);
jitsiClient.connect().thenAccept(success -> {
if (success) {
SwingUtilities.invokeLater(() -> {
log("Successfully connected to Jitsi room");
disconnectButton.setEnabled(true);
muteAudioButton.setEnabled(true);
muteVideoButton.setEnabled(true);
sendMessageButton.setEnabled(true);
// Start monitoring
startMonitoring();
});
} else {
SwingUtilities.invokeLater(() -> {
log("Failed to connect to Jitsi room");
connectButton.setEnabled(true);
});
}
}).exceptionally(throwable -> {
SwingUtilities.invokeLater(() -> {
log("Connection error: " + throwable.getMessage());
connectButton.setEnabled(true);
});
return null;
});
}
private void disconnectFromRoom() {
if (jitsiClient != null) {
jitsiClient.disconnect();
log("Disconnected from Jitsi room");
}
connectButton.setEnabled(true);
disconnectButton.setEnabled(false);
muteAudioButton.setEnabled(false);
muteVideoButton.setEnabled(false);
sendMessageButton.setEnabled(false);
}
private void toggleAudioMute() {
if (jitsiClient != null) {
// Toggle audio mute state
boolean currentlyMuted = muteAudioButton.getText().contains("Unmute");
jitsiClient.setAudioMute(!currentlyMuted);
if (currentlyMuted) {
muteAudioButton.setText("Mute Audio");
log("Audio unmuted");
} else {
muteAudioButton.setText("Unmute Audio");
log("Audio muted");
}
}
}
private void toggleVideoMute() {
if (jitsiClient != null) {
// Toggle video mute state
boolean currentlyMuted = muteVideoButton.getText().contains("Unmute");
jitsiClient.setVideoMute(!currentlyMuted);
if (currentlyMuted) {
muteVideoButton.setText("Mute Video");
log("Video unmuted");
} else {
muteVideoButton.setText("Unmute Video");
log("Video muted");
}
}
}
private void sendChatMessage() {
String message = messageField.getText().trim();
if (!message.isEmpty() && jitsiClient != null) {
jitsiClient.sendChatMessage(message);
log("Sent message: " + message);
messageField.setText("");
}
}
private void startMonitoring() {
// Monitor JVB statistics periodically
scheduler.scheduleAtFixedRate(() -> {
if (jvbAdminClient != null) {
try {
boolean healthy = jvbAdminClient.healthCheck();
if (!healthy) {
log("WARNING: JVB health check failed");
}
} catch (Exception e) {
log("Error checking JVB health: " + e.getMessage());
}
}
}, 10, 30, TimeUnit.SECONDS);
}
private void log(String message) {
SwingUtilities.invokeLater(() -> {
String timestamp = java.time.LocalTime.now().format(
java.time.format.DateTimeFormatter.ofPattern("HH:mm:ss"));
logArea.append("[" + timestamp + "] " + message + "\n");
logArea.setCaretPosition(logArea.getDocument().getLength());
});
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeel());
} catch (Exception e) {
e.printStackTrace();
}
new JitsiClientApplication().setVisible(true);
});
}
}
Key Features and Best Practices
Security Considerations
import javax.net.ssl.*;
import java.security.cert.X509Certificate;
public class JitsiSecurityConfig {
public static SSLSocketFactory createLenientSSLSocketFactory() throws Exception {
// WARNING: This creates a trust manager that doesn't validate certificates
// Only use for testing or with proper certificate validation in production
TrustManager[] trustAllCerts = new TrustManager[] {
new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
public void checkClientTrusted(X509Certificate[] certs, String authType) {}
public void checkServerTrusted(X509Certificate[] certs, String authType) {}
}
};
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, trustAllCerts, new java.security.SecureRandom());
return sc.getSocketFactory();
}
public static void configureSecureWebSocket() {
// Configure WebSocket client with proper SSL context
System.setProperty("org.java_websocket.client.sslContext",
"custom SSL context configuration");
}
}
Error Handling and Reconnection
public class JitsiReconnectionManager {
private final JitsiWebRTCClient client;
private final ScheduledExecutorService scheduler;
private int reconnectAttempts = 0;
private final int maxReconnectAttempts = 5;
public JitsiReconnectionManager(JitsiWebRTCClient client) {
this.client = client;
this.scheduler = Executors.newScheduledThreadPool(1);
}
public void scheduleReconnection() {
if (reconnectAttempts < maxReconnectAttempts) {
long delay = calculateReconnectionDelay(reconnectAttempts);
reconnectAttempts++;
scheduler.schedule(() -> {
System.out.println("Attempting reconnection (" + reconnectAttempts +
"/" + maxReconnectAttempts + ")...");
client.connect().thenAccept(success -> {
if (success) {
System.out.println("Reconnection successful");
reconnectAttempts = 0;
} else {
scheduleReconnection();
}
});
}, delay, TimeUnit.SECONDS);
} else {
System.err.println("Maximum reconnection attempts reached");
}
}
private long calculateReconnectionDelay(int attempt) {
// Exponential backoff with jitter
long baseDelay = Math.min(30, (long) Math.pow(2, attempt));
long jitter = (long) (Math.random() * 1000);
return baseDelay + jitter / 1000;
}
public void shutdown() {
scheduler.shutdown();
}
}
Conclusion
This comprehensive Jitsi Videobridge client implementation provides:
- Conference Management - Create and manage Jitsi meetings
- WebRTC Integration - Real-time audio/video communication
- REST API Client - Monitor and control JVB instances
- GUI Application - User-friendly interface for participation
- Error Handling - Robust connection management and reconnection
Key considerations for production use:
- Security: Implement proper SSL certificate validation
- Scalability: Use connection pooling for multiple conferences
- Monitoring: Implement health checks and metrics collection
- Error Recovery: Handle network failures and reconnections gracefully
- Compliance: Ensure data privacy and regulatory compliance
The examples provide a solid foundation for building custom Jitsi Videobridge clients in Java, from simple conference management to full-featured video conferencing applications.