protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
HttpResponseMessage response = await base.SendAsync(request, cancellationToken).ConfigureAwait(false);
// possibly a transient "token expiration" failure
// work around for channels that might return Forbidden if the JwtToken is expired
if (response.StatusCode == HttpStatusCode.Unauthorized || response.StatusCode == HttpStatusCode.Forbidden)
{
response.Dispose();
// this call might throw if the Microsoft login service returns an oauth failure
var token = await credentials.GetTokenAsync(true).ConfigureAwait(false);
// adds token to outgoing request
await credentials.ProcessHttpRequestAsync(request, cancellationToken).ConfigureAwait(false);
// retry request with refreshed token
response = await base.SendAsync(request, cancellationToken).ConfigureAwait(false);
}
// since we've ruled out transient "token expiration" failure, or we've found a permanent Forbidden failure
// this failure will come from a downstream system like channel connector or state service rather than the Microsoft login service
// then throw an exception with additional context
// this centralizes the handling for this StatusCode here rather than the autorest-generated clients
if (response.StatusCode == HttpStatusCode.Forbidden || response.StatusCode == HttpStatusCode.Unauthorized)
{
using (response)
{
try
{
response.EnsureSuccessStatusCode();
}
catch (Exception error)
{
var statusCode = response.StatusCode;
var reasonPhrase = response.ReasonPhrase;
throw new UnauthorizedAccessException($"Authorization for Microsoft App ID {credentials.MicrosoftAppId} failed with status code {statusCode} and reason phrase '{reasonPhrase}'", error);
}
}
}
return(response);
}
protected override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
HttpResponseMessage response = await base.SendAsync(request, cancellationToken).ConfigureAwait(false);
if (this.Unauthorized(response.StatusCode))
{
var token = await credentials.GetTokenAsync(true).ConfigureAwait(false);
await credentials.ProcessHttpRequestAsync(request, cancellationToken).ConfigureAwait(false);
response = await base.SendAsync(request, cancellationToken).ConfigureAwait(false);
}
if (this.Unauthorized(response.StatusCode))
{
throw new UnauthorizedAccessException($"Authorization for Microsoft App ID {credentials.MicrosoftAppId} failed with status code {response.StatusCode}");
}
return(response);
}
