Add support of wss:// server

NebulaNetwork/Client.cs

@@ -40,6 +40,7 @@ public class Client : IClient
         AccessTools.FieldRefAccess<WebSocket, MemoryStream>("_fragmentsBuffer");
 
     private readonly string serverPassword;
+    private readonly string serverProtocol;
 
     private WebSocket clientSocket;
 
@@ -49,15 +50,19 @@ public class Client : IClient
     private NebulaConnection serverConnection;
     private bool websocketAuthenticationFailure;
 
-    public Client(string url, int port, string password = "")
-        : this(new IPEndPoint(Dns.GetHostEntry(url).AddressList[0], port), password)
+    public Client(string url, int port, string protocol, string password = "")
+        : this(new IPEndPoint(Dns.GetHostEntry(url).AddressList[0], port), protocol, password)
     {
     }
 
-    public Client(IPEndPoint endpoint, string password = "")
+    public Client(IPEndPoint endpoint, string protocol = "", string password = "")
     {
         ServerEndpoint = endpoint;
         serverPassword = password;
+        if (protocol != "")
+        {
+            serverProtocol = protocol;
+        }
     }
 
     public IPEndPoint ServerEndpoint { get; set; }
@@ -80,7 +85,7 @@ public void Start()
         PacketProcessor.SimulateLatency = true;
 #endif
 
-        clientSocket = new WebSocket($"ws://{ServerEndpoint}/socket");
+        clientSocket = new WebSocket($"{serverProtocol}://{ServerEndpoint}/socket");
         clientSocket.Log.Level = LogLevel.Debug;
         clientSocket.Log.Output = Log.SocketOutput;
         clientSocket.OnOpen += ClientSocket_OnOpen;
@@ -112,8 +117,8 @@ public void Start()
 
         if (Config.Options.RememberLastIP)
         {
-            // We've successfully connected, set connection as last ip, cutting out "ws://" and "/socket"
-            Config.Options.LastIP = ServerEndpoint.ToString();
+            // We've successfully connected, set connection as last ip, cutting out "ws://"(but not others, like wss) and "/socket"
+            Config.Options.LastIP = serverProtocol == "ws" ? ServerEndpoint.ToString() : $"{serverProtocol}://{ServerEndpoint.ToString()}";
             Config.SaveOptions();
         }
 
@@ -264,6 +269,16 @@ private void ClientSocket_OnOpen(object sender, EventArgs e)
 
     private void ClientSocket_OnClose(object sender, CloseEventArgs e)
     {
+        // Unity's TLS bug workaround, see https://github.com/sta/websocket-sharp/issues/219
+        var sslProtocolHack = (System.Security.Authentication.SslProtocols)(0xC00 | 0x300 | 0xC0);
+        // TlsHandshakeFailure: 1015
+        if (e.Code == 1015 && clientSocket.SslConfiguration.EnabledSslProtocols != sslProtocolHack)
+        {
+            clientSocket.SslConfiguration.EnabledSslProtocols = sslProtocolHack;
+            clientSocket.Connect();
+            return;
+        }
+
         serverConnection = null;
 
         UnityDispatchQueue.RunOnMainThread(() =>

NebulaPatcher/Patches/Dynamic/UIMainMenu_Patch.cs

@@ -273,6 +273,22 @@ public static void JoinGame(string ip, string password = "")
         // Remove whitespaces from connection string
         var s = ip;
 
+        // Parse protocol if set
+        var protocol = "ws";
+        var firstColonPos = s.IndexOf("://");
+        if (firstColonPos > 0)
+        {
+            var candidate = s.Substring(0, firstColonPos);
+            switch (candidate)
+            {
+                case "wss":
+                case "ws":
+                    protocol = candidate;
+                    s = s.Substring(firstColonPos + 3);
+                    break;
+            }
+        }
+
         // Taken from .net IPEndPoint
         IPEndPoint result = null;
         var addressLength = s.Length; // If there's no port then send the entire string to the address parser
@@ -330,18 +346,18 @@ public static void JoinGame(string ip, string password = "")
 
         p = p == 0 ? Config.Options.HostPort : p;
 
-        UIRoot.instance.StartCoroutine(TryConnectToServer(s, p, isIP, password));
+        UIRoot.instance.StartCoroutine(TryConnectToServer(s, protocol, p, isIP, password));
     }
 
-    private static IEnumerator TryConnectToServer(string ip, int port, bool isIP, string password)
+    private static IEnumerator TryConnectToServer(string ip, string protocol, int port, bool isIP, string password)
     {
         InGamePopup.ShowInfo("Connecting".Translate(), "Connecting to server...".Translate(), null);
         multiplayerMenu.gameObject.SetActive(false);
 
         // We need to wait here to have time to display the Connecting popup since the game freezes during the connection.
         yield return new WaitForSeconds(0.5f);
 
-        if (!ConnectToServer(ip, port, isIP, password))
+        if (!ConnectToServer(ip, protocol, port, isIP, password))
         {
             InGamePopup.FadeOut();
             //re-enabling the menu again after failed connect attempt
@@ -360,13 +376,13 @@ private static void OnJoinGameBackButtonClick()
         UIRoot.instance.OpenMainMenuUI();
     }
 
-    private static bool ConnectToServer(string connectionString, int serverPort, bool isIP, string password)
+    private static bool ConnectToServer(string connectionString, string protocol, int serverPort, bool isIP, string password)
     {
         try
         {
             if (isIP)
             {
-                Multiplayer.JoinGame(new Client(new IPEndPoint(IPAddress.Parse(connectionString), serverPort), password));
+                Multiplayer.JoinGame(new Client(new IPEndPoint(IPAddress.Parse(connectionString), serverPort), protocol, password));
                 return true;
             }
 
@@ -375,7 +391,7 @@ private static bool ConnectToServer(string connectionString, int serverPort, boo
             {
                 return false;
             }
-            Multiplayer.JoinGame(new Client(connectionString, serverPort, password));
+            Multiplayer.JoinGame(new Client(connectionString, serverPort, protocol, password));
             return true;
         }
         catch (Exception e)