Bearer token that never expires

Question

Is it possible define that ASP.NET Web API 2 bearer token that never expires? Any clue?

Answer 1

I don't think you can set it to never expire but you could certainly set a longer AccessTokenExpireTimeSpan:

OAuthOptions = new OAuthAuthorizationServerOptions
{
    TokenEndpointPath = new PathString("/Token"),
    Provider = new ApplicationOAuthProvider(PublicClientId, UserManagerFactory),
    AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
    AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
    AllowInsecureHttp = true
};  
app.UseOAuthBearerTokens(OAuthOptions);

Answer 2

I think we can also achieve this by using given below code

AccessTokenExpireTimeSpan = TimeSpan.MaxValue

According to MSDN,

The value of this field is equivalent to Int64.MaxValue ticks. The string representation of this value is positive 10675199.02:48:05.4775807, or slightly more than 10,675,199 days https://msdn.microsoft.com/en-us/library/system.timespan.maxvalue(v=vs.110).aspx