Issue to Reach FireBase API

[skogkatt]

Hello all,

As already mentionned, this is the sample code i use to contact firebase with the method to susbscribe a Topic :

        FirebaseApp defaultapp = null;
        FirebaseAdmin.Messaging.FirebaseMessaging messaging = null;

        // Initialize the default app
        string path = AppDomain.CurrentDomain.BaseDirectory + "a2s-production-firebase-adminsdk-.json";

            defaultapp = FirebaseApp.Create(new AppOptions()
            {
                Credential = GoogleCredential.FromFile(path),
            });

        messaging = FirebaseAdmin.Messaging.FirebaseMessaging.GetMessaging(defaultapp);

        var response = await messaging.SubscribeToTopicAsync(registrationTokens,topic);

when i try to call this code from API i get a socket exception "StatusCode": 50000, "TechnicalMessage": "System.Net.Sockets.SocketException (0x80004005): Une tentative de connexion a échoué car le parti connecté n’a pas répondu convenablement au-delà d’une certaine durée ou une connexion établie a échoué car l’hôte de connexion n’a pas répondu à System.Net.Sockets.Socket.InternalEndConnect(IAsyncResult asyncResult)\r\n à System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)\r\n à System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)", "UserFriendlyMessage": null

It works when :

1- i'm getting out of the work network and plug myself in 4g hotspot it works. Is That have to do with the local network or try to access to a specific url ?

2 - i call this code from a console application.

Thanks for the help in advance.

[hiranya911]

Is That have to do with the local network or try to access to a specific url ?

Most of the time when the issue only occurs on a certain network, it's because the network uses specific Firewall or proxy settings. You will need to check if such requirements exist in your work network, and handle them accordingly.

[skogkatt]

in out network there's a limitation so i asked to open those urls : https://oauth2.googleapis.com https://fcm.googleapis.com

i configured the proxy on the server for me to access those urls. Firewall are disabled.

[hiranya911]

Typically you would configure the SDK to make API calls through the proxy. This is done by extending the HttpClientFactory. See #209.