Google Calendar V3 hangs when used outside local environment

Question

I\'m working on a wrapper for the .net version of the Google Calendar API. The authentication is rather simple and working fine locally (localhost:port).

UserCr         


        

Answer 1

I am with you. For whatever reason, that also had happen to me. It was a calvary. The code below works for me. It is my own revision of Google API Simple Task ASP.NET sample.

Add these usings...

using System.IO;
using System.Threading;

using Google.Apis.Calendar.v3;
using Google.Apis.Calendar.v3.Data;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Auth.OAuth2.Flows;
using Google.Apis.Auth.OAuth2.Web;
using Google.Apis.Services;
using Google.Apis.Util.Store;

And these...

CalendarService service;
static string gFolder = System.Web.HttpContext.Current.Server.MapPath("/App_Data/MyGoogleStorage");

protected void Page_Load(object sender, EventArgs e)
{
    IAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow(
        new GoogleAuthorizationCodeFlow.Initializer
        {
            ClientSecrets = GetClientConfiguration().Secrets,
            DataStore = new FileDataStore(gFolder),
            Scopes = new[] { CalendarService.Scope.Calendar }
        });

    var uri = Request.Url.ToString();
    var code = Request["code"];
    if (code != null)
    {
        var token = flow.ExchangeCodeForTokenAsync(UserId, code,
            uri.Substring(0, uri.IndexOf("?")), CancellationToken.None).Result;

        // Extract the right state.
        var oauthState = AuthWebUtility.ExtracRedirectFromState(
            flow.DataStore, UserId, Request["state"]).Result;
        Response.Redirect(oauthState);
    }
    else
    {
        var result = new AuthorizationCodeWebApp(flow, uri, uri).AuthorizeAsync(UserId,
            CancellationToken.None).Result;
        if (result.RedirectUri != null)
        {
            // Redirect the user to the authorization server.
            Response.Redirect(result.RedirectUri);
        }
        else
        {
            // The data store contains the user credential, so the user has been already authenticated.
            service = new CalendarService(new BaseClientService.Initializer
            {
                ApplicationName = "Calendar API Sample",
                HttpClientInitializer = result.Credential
            });
        }
    }

}

public static GoogleClientSecrets GetClientConfiguration()
{
    using (var stream = new FileStream(gFolder + @"\client_secrets.json", FileMode.Open, FileAccess.Read))
    {
        return GoogleClientSecrets.Load(stream);
    }
}

Hope that helps.