ASP.NET Individual Accounts with Refresh Token - asp.net

Question

Im trying to secure my ASP.NET web api using OWIN and ASP.NET identity, I managed to get it done. But I am saving the access token in the client's local storage (Mobile) which defeats the purpose of the access token. So I have to add refresh token. I managed to generate the refresh token using the same ticket of the access token. But now I don't know how to use the refresh token in the client.
Startup.cs
OAuthOptions = new OAuthAuthorizationServerOptions
{
TokenEndpointPath = new PathString("/Token"),
Provider = new ApplicationOAuthProvider(PublicClientId, UserManagerFactory),
AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(tokenExpiry),
AllowInsecureHttp = true,
RefreshTokenProvider = new AuthenticationTokenProvider
{
OnCreate = CreateRefreshToken,
OnReceive = ReceiveRefreshToken,
}
};
private static void CreateRefreshToken(AuthenticationTokenCreateContext context)
{
context.SetToken(context.SerializeTicket());
}
private static void ReceiveRefreshToken(AuthenticationTokenReceiveContext context)
{
context.DeserializeTicket(context.Token);
}
AccountController.cs
private JObject GenerateApiToken(IdentityUser user, TimeSpan tokenExpirationTimeSpan, string provider)
{
var identity = new ClaimsIdentity(Startup.OAuthOptions.AuthenticationType);
identity.AddClaim(new Claim(ClaimTypes.Name, user.Id, null, provider));
identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, user.Id, null, "LOCAL_AUTHORITY"));
var ticket = new AuthenticationTicket(identity, new AuthenticationProperties());
var currentUtc = new Microsoft.Owin.Infrastructure.SystemClock().UtcNow;
ticket.Properties.IssuedUtc = currentUtc;
ticket.Properties.ExpiresUtc = currentUtc.Add(tokenExpirationTimeSpan);
var accesstoken = Startup.OAuthOptions.AccessTokenFormat.Protect(ticket);
var refreshtoken = Startup.OAuthOptions.RefreshTokenFormat.Protect(ticket);
Authentication.SignIn(identity);
// Create the response
JObject blob = new JObject(
new JProperty("userName", user.UserName),
new JProperty("access_token", accesstoken),
new JProperty("refresh_token", refreshtoken),
new JProperty("token_type", "bearer"),
new JProperty("expires_in", tokenExpirationTimeSpan.TotalSeconds.ToString()),
new JProperty(".issued", ticket.Properties.IssuedUtc.ToString()),
new JProperty(".expires", ticket.Properties.ExpiresUtc.ToString())
);
var json = Newtonsoft.Json.JsonConvert.SerializeObject(blob);
return blob;
}
Client request for bearer token
$.ajax({type: 'POST',
url: tokenUrl + "Token",
data: "grant_type=password&username=" + identity.userName + "&password=" + identity.password,
contentType: 'application/x-www-form-urlencoded',
}).
done(function(response) {
app.tokenManager.saveToken(response.access_token, response.refresh_token, response.expires_in, apiTokenType.BASIC);
deferred.resolve({
token: response.access_token
});
})
.fail(function(result, status) {
deferred.reject(result);
});
Now, how can I use the Refresh token?

Answer 1

according to aouth2 spec
https://www.rfc-editor.org/rfc/rfc6749#section-6
try
POST /token HTTP/1.1
Host: server.example.com
Authorization: Bearer czZCaGRSa3F0MzpnWDFmQmF0M2JW
Content-Type: application/x-www-form-urlencoded
grant_type=refresh_token&refresh_token=tGzv3JOkF0XG5Qx2TlKWIA