public string RefreshAccessToken(FormCollection form)
{
string spWebUrl = form["spWebUrl"];
string tenantId = form["tenantId"];
string refreshTokenContent = _refreshTokenManager.RetrieveToken(HttpContext.Request);
var credential = new ClientCredential(SettingsHelper.ClientId, SettingsHelper.ClientKey);
var authContext = new AuthenticationContext(SettingsHelper.AUTHORITY + tenantId);
try
{
AuthenticationResult result = authContext.AcquireTokenByRefreshToken(refreshTokenContent, credential, spWebUrl);
if (result == null)
{
throw new Exception("Error acquiring SharePoint AccessToken.");
}
return(result.AccessToken);
}
catch (AdalServiceException exception)
{
throw new Exception("SharePoint RefreshToken is invalid.", exception);
}
}
