Unity+Firebase-Database[Error] WebSocket: ws_0 - could not connect

Question

I cant seem to figure out a working solution to this error, more complete:

018-06-01 10:33:09 PM [Error] WebSocket: ws_0 - could not connect System.Net.Sockets.SocketException (0x80004005): No route to host

2018-06-01 10:33:09 PM [Error] WebSocket: ws_0 - WebSocketException during handshake Firebase.Database.Internal.TubeSock.WebSocketException: unknown host: ########.firebaseio.com ---> System.Net.Sockets.SocketException: No route to host

Take note, the above errors repeat a few times every second, with ws_# incrementing by one each time

Unity 2018.1.1f1

Firebase-Database: Whatever is newest, got a few days ago

Bit of code:

void Start() {
    FirebaseApp.LogLevel = LogLevel.Verbose;
    FirebaseDatabase.DefaultInstance.LogLevel = LogLevel.Verbose; // Or your database instance, if not using the default.

    FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(task => {
        var dependencyStatus = task.Result;
        if (dependencyStatus == Firebase.DependencyStatus.Available) {
            FirebaseApp app = FirebaseApp.DefaultInstance;
            // NOTE: You'll need to replace this url with your Firebase App's database
            // path in order for the database connection to work correctly in editor.
            app.SetEditorDatabaseUrl("https://########.firebaseio.com/");
            if (app.Options.DatabaseUrl != null) app.SetEditorDatabaseUrl(app.Options.DatabaseUrl);
        } else {
            Debug.LogError(System.String.Format(
                "Could not resolve all Firebase dependencies: {0}", dependencyStatus));
            // Firebase Unity SDK is not safe to use here.
        }
    });
}

Below is my attempt to access the firebase database

DatabaseReference mDatabaseRef = FirebaseDatabase.DefaultInstance.RootReference;
staticLocalData.thisUser = new UserData();
staticLocalData.thisUser.userID = newUser.UserId;
staticLocalData.thisUser.email = email;
staticLocalData.thisUser.firstName = firstName;
staticLocalData.thisUser.lastName = lastName;
registerData temp = new registerData();
temp.firstName = firstName;
temp.lastName = lastName;
temp.email = email;
temp.userName = userName;

Debug.Log(JsonUtility.ToJson(temp));
mDatabaseRef.Child("users").SetValueAsync("saddsa:23");  
//mDatabaseRef.Child("users").Child(newUser.UserId).SetRawJsonValueAsync(JsonUtility.ToJson(temp));

Ruleset: (Should allow for all)

{
  "rules": {
    ".read": true,
    ".write": true
  }
}

Additional notes:

• Firebase authentication is used and works perfectly, i just cant operate/access the database
• Been using this as my main reference: https://firebase.google.com/docs/database/unity/save-data
• using net 3x AND 4x, same result
• also Mono

Answer 1

Using:

Unity Editor 2018.2.5f1 on OSX Sierra 10.12.6

scripting Runtime 4.x

scripting backend IL2CPP

API Level 4.x

Firebase plugin version 5.2.1

This exact same problem was happening. This seemed to be related to the Mono Websocket implementations, as discussed in more detail on the following issues:

https://github.com/firebase/quickstart-unity/issues/106

https://github.com/firebase/quickstart-unity/issues/162

The Firebase dev team went around what is described there by providing their own native websocket implementations for each platform. Apparently the Unity Editor implementation is lagging behind.

The way to workaround this issue here was by disabling the FirebaseDatabase.dll under ../Firebase/Plugins/Mono/ for the editor platform, and then enabling the one FirebaseDatabase.dll directly under ../Firebase/Plugins/ instead.

So far, so good.