protected virtual async Task <OAuthTokenResponse> ExchangeCodeAsync(string code, string redirectUri, AuthenticationProperties properties)
{
var tokenRequestParameters = new Dictionary <string, string>()
{
{ "client_id", Options.ClientId },
{ "redirect_uri", redirectUri },
{ "client_secret", Options.ClientSecret },
{ "code", code },
{ "grant_type", "authorization_code" },
};
var exchangeCodeContext = new OAuthExchangeCodeContext(properties, Context, Scheme, Options, tokenRequestParameters);
await Events.OnExchangeCode(exchangeCodeContext);
var requestContent = new FormUrlEncodedContent(tokenRequestParameters);
var requestMessage = new HttpRequestMessage(HttpMethod.Post, Options.TokenEndpoint);
requestMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
requestMessage.Content = requestContent;
var response = await Backchannel.SendAsync(requestMessage, Context.RequestAborted);
if (response.IsSuccessStatusCode)
{
var payload = JsonDocument.Parse(await response.Content.ReadAsStringAsync());
return(OAuthTokenResponse.Success(payload));
}
else
{
var error = "OAuth token endpoint failure: " + await Display(response);
return(OAuthTokenResponse.Failed(new Exception(error)));
}
}
/// <summary> /// Invoked before the request to exchange the code for the access token. /// </summary> /// <param name="context">Contains the code returned, the redirect URI and the <see cref="AuthenticationProperties"/>.</param> /// <returns></returns> public virtual Task ExchangeCode(OAuthExchangeCodeContext context) => OnExchangeCode(context);