feat: route Xray through Tunnel for seamless server switch

client/core/protocols/vpnProtocol.cpp

@@ -113,6 +113,12 @@ bool VpnProtocol::isWireGuardBased(amnezia::DockerContainer container)
         || container == amnezia::DockerContainer::WireGuard;
 }
 
+bool VpnProtocol::isXrayBased(amnezia::DockerContainer container)
+{
+    return container == amnezia::DockerContainer::Xray
+        || container == amnezia::DockerContainer::SSXray;
+}
+
 VpnProtocol *VpnProtocol::factory(DockerContainer container, const QJsonObject &configuration)
 {
     switch (container) {

client/core/protocols/vpnProtocol.h

@@ -74,6 +74,7 @@ public:
 
     static VpnProtocol* factory(amnezia::DockerContainer container, const QJsonObject &configuration);
     static bool isWireGuardBased(amnezia::DockerContainer container);
+    static bool isXrayBased(amnezia::DockerContainer container);
 
 signals:
     void bytesChanged(quint64 receivedBytes, quint64 sentBytes);

client/core/protocols/xrayProtocol.cpp

@@ -28,11 +28,17 @@ XrayProtocol::XrayProtocol(const QJsonObject &configuration, QObject *parent) :
     m_routeMode = static_cast<amnezia::RouteMode>(configuration.value(amnezia::configKey::splitTunnelType).toInt());
     m_remoteAddress = NetworkUtilities::getIPAddress(m_rawConfig.value(amnezia::configKey::hostName).toString());
 
+    m_tunName = configuration.value("tunName").toString();
+    if (m_tunName.isEmpty()) {
+        m_tunName = configuration.value("ifname").toString();
+    }
+    if (m_tunName.isEmpty()) {
 #ifdef Q_OS_MACOS
-    m_tunName = configuration.value("tunName").toString("utun22");
+        m_tunName = QStringLiteral("utun22");
 #else
-    m_tunName = configuration.value("tunName").toString("tun2");
+        m_tunName = QStringLiteral("tun2");
 #endif
+    }
     const QString primaryDns = configuration.value(amnezia::configKey::dns1).toString();
     m_dnsServers.push_back(QHostAddress(primaryDns));
     if (primaryDns != amnezia::protocols::dns::amneziaDnsIp) {
@@ -167,7 +173,9 @@ void XrayProtocol::stop()
 void XrayProtocol::setPrimary(const QJsonObject &config)
 {
     Q_UNUSED(config)
-    emit primaryReady();
+    QMetaObject::invokeMethod(this, [this]() {
+        emit primaryReady();
+    }, Qt::QueuedConnection);
 }
 
 ErrorCode XrayProtocol::startTun2Socks()

client/vpnConnection.cpp

@@ -167,12 +167,13 @@ void VpnConnection::connectToVpn(const QString &serverId, DockerContainer contai
 
 #ifdef AMNEZIA_DESKTOP
     const bool isWg = VpnProtocol::isWireGuardBased(container);
-    const QString preAllocatedIfname = isWg ? allocateIfname() : QString();
+    const bool isXray = VpnProtocol::isXrayBased(container);
+    const bool useTunnelPath = isWg || isXray;
+    const QString preAllocatedIfname = useTunnelPath ? allocateIfname() : QString();
 
-    // Seamless WG -> WG switch path: already connected via Tunnel, new container is also WG.
     if (m_active
         && m_connectionState == Vpn::ConnectionState::Connected
-        && isWg) {
+        && useTunnelPath) {
         if (!m_trafficGuard->allowEndpoint(resolvedRemote, preAllocatedIfname)) {
             releaseIfname(preAllocatedIfname);
             setConnectionState(Vpn::ConnectionState::Error);
@@ -184,7 +185,7 @@ void VpnConnection::connectToVpn(const QString &serverId, DockerContainer contai
     }
 
     if (!m_trafficGuard->allowEndpoint(resolvedRemote, preAllocatedIfname)) {
-        if (isWg) releaseIfname(preAllocatedIfname);
+        if (useTunnelPath) releaseIfname(preAllocatedIfname);
         setConnectionState(Vpn::ConnectionState::Error);
         emit vpnProtocolError(ErrorCode::AmneziaServiceConnectionFailed);
         return;
@@ -217,8 +218,11 @@ void VpnConnection::connectToVpn(const QString &serverId, DockerContainer contai
     m_remoteAddress = resolvedRemote;
 
 #ifdef AMNEZIA_DESKTOP
-    if (isWg) {
+    if (useTunnelPath) {
         config.insert("ifname", preAllocatedIfname);
+        if (isXray) {
+            config.insert("tunName", preAllocatedIfname);
+        }
         m_active = new Tunnel(preAllocatedIfname, container, config, resolvedRemote, this);
         wireTunnelSignals(m_active, /*isActive=*/true);
         wireDaemonReconnectSignals();
@@ -544,6 +548,9 @@ void VpnConnection::startTunnelSwitch(DockerContainer container,
 {
     QJsonObject config = vpnConfiguration;
     config.insert("ifname", stagingIfname);
+    if (VpnProtocol::isXrayBased(container)) {
+        config.insert("tunName", stagingIfname);
+    }
     appendKillSwitchConfig(config);
     appendSplitTunnelingConfig(config);
 
@@ -560,10 +567,8 @@ void VpnConnection::onTunnelPrepared()
     if (!tunnel) return;
 
     if (tunnel == m_staging && m_active) {
-        const QString oldIfname = m_active->ifname();
-        m_trafficGuard->swap(m_active, m_staging);
-        delete m_active;
-        releaseIfname(oldIfname);
+        Tunnel* oldTunnel = m_active;
+        const QString oldIfname = oldTunnel->ifname();
 
         m_active = m_staging;
         m_staging = nullptr;
@@ -571,6 +576,10 @@ void VpnConnection::onTunnelPrepared()
         m_vpnConfiguration = m_active->config();
         m_remoteAddress = m_active->remoteAddress();
         m_trafficGuard->setConfig(m_vpnConfiguration);
+
+        m_trafficGuard->swap(oldTunnel, m_active);
+        delete oldTunnel;
+        releaseIfname(oldIfname);
         return;
     }