/// <summary>Retrieve a new token from the server using the specified request.</summary>
/// <param name="userId">User identifier</param>
/// <param name="request">Token request</param>
/// <param name="taskCancellationToken">Cancellation token to cancel operation</param>
/// <returns>Token response with the new access token</returns>
internal async Task<TokenResponse> FetchTokenAsync(string userId, TokenRequestBase request, Uri baseurl,
CancellationToken taskCancellationToken)
{
// Add client id and client secret to requests.
request.ClientId = _.ClientSecrets.ClientId;
request.ClientSecret = _.ClientSecrets.ClientSecret;
var rb = new RequestBuilder(request) { BaseUri = baseurl };
var content = rb.CreateFormUrlEncodedContent();
using (var client = new HttpClient() { BaseAddress = baseurl })
{
var resp = await client.PostAsync(rb.RelativePath(), content, taskCancellationToken);
if (!resp.IsSuccessStatusCode)
{
var e = await resp.Content.ReadAsAsync<TokenErrorResponse>(taskCancellationToken);
await DeleteTokenAsync(userId, taskCancellationToken).ConfigureAwait(false);
throw new ResponseException<TokenErrorResponse>(e);
}
var token = await resp.Content.ReadAsAsync<TokenResponse>(taskCancellationToken);
token.Issued = DateTime.Now;
return token;
}
}
/// <summary>Creates a <seealso cref="System.Uri"/> which is used to request the authorization code.</summary>
public Uri Build(Uri serverurl)
{
var b = new RequestBuilder(this){ BaseUri = serverurl};
return b.BuildUri();
}