public string AccessTokenGenerator()
{
var AccessToken = string.Empty;
var response = new HttpResponseMessage();
//Get URLs from App.Config
string oAuthApiUrl = Utility.GetAppSettings(Constants.OAuthApiUrl);
using (var oAuthClient = new HttpClient())
{
oAuthClient.BaseAddress = new Uri(oAuthApiUrl);
//Generate JWS and get access token (JWT)
OAuthGenerator.GenerateJWSAndGetAccessToken(oAuthClient);
//Read OAuth API response
response = oAuthClient.GetAsync(oAuthApiUrl).Result;
if (response != null && response.IsSuccessStatusCode)
{
var oauthApiResponse = response.Content.ReadAsAsync <AccessTokenResponse>().Result;
if (oauthApiResponse != null && oauthApiResponse.StatusCode == 200)
{
//Get Access token from OAuth API response
//Access token is valid for one hour
AccessToken = oauthApiResponse.AccessToken;
Session.SetString("AccessToken", AccessToken);
}
}
return(AccessToken);
}
}
public static bool CheckIsJWTExpired(string JWT)
{
var tokenHandler = new JwtSecurityTokenHandler();
JwtSecurityToken token = new JwtSecurityToken();
token = tokenHandler.ReadJwtToken(JWT);
bool isJWTExpired = false;
if (token != null && token.Claims != null && token.Claims.Any())
{
if (token.Claims.Any(x => x.Type == JwtRegisteredClaimNames.Exp))
{
int expiryTime = Utility.GetInt(token.Claims.First(claim => claim.Type == JwtRegisteredClaimNames.Exp).Value);
int currentTime = Utility.GetInt(OAuthGenerator.ConvertToUnixEpochString(DateTime.Now));
if (expiryTime < currentTime)
{
isJWTExpired = true;
}
}
}
return(isJWTExpired);
}