private Status?ValidateHeaders(HttpResponseMessage httpResponse)
{
GrpcCallLog.ResponseHeadersReceived(Logger);
// gRPC status can be returned in the header when there is no message (e.g. unimplemented status)
// An explicitly specified status header has priority over other failing statuses
if (GrpcProtocolHelpers.TryGetStatusCore(httpResponse.Headers, out var status))
{
// Trailers are in the header because there is no message.
// Note that some default headers will end up in the trailers (e.g. Date, Server).
_trailers = GrpcProtocolHelpers.BuildMetadata(httpResponse.Headers);
return(status);
}
if (httpResponse.StatusCode != HttpStatusCode.OK)
{
var statusCode = MapHttpStatusToGrpcCode(httpResponse.StatusCode);
return(new Status(statusCode, "Bad gRPC response. HTTP status code: " + (int)httpResponse.StatusCode));
}
if (httpResponse.Content?.Headers.ContentType == null)
{
return(new Status(StatusCode.Cancelled, "Bad gRPC response. Response did not have a content-type header."));
}
var grpcEncoding = httpResponse.Content.Headers.ContentType;
if (!GrpcProtocolHelpers.IsGrpcContentType(grpcEncoding))
{
return(new Status(StatusCode.Cancelled, "Bad gRPC response. Invalid content-type value: " + grpcEncoding));
}
// Call is still in progress
return(null);
}
private void ValidateHeaders()
{
Log.ResponseHeadersReceived(Logger);
Debug.Assert(HttpResponse != null);
if (HttpResponse.StatusCode != HttpStatusCode.OK)
{
_headerValidationError = "Bad gRPC response. Expected HTTP status code 200. Got status code: " + (int)HttpResponse.StatusCode;
}
else if (HttpResponse.Content?.Headers.ContentType == null)
{
_headerValidationError = "Bad gRPC response. Response did not have a content-type header.";
}
else
{
var grpcEncoding = HttpResponse.Content.Headers.ContentType.ToString();
if (!GrpcProtocolHelpers.IsGrpcContentType(grpcEncoding))
{
_headerValidationError = "Bad gRPC response. Invalid content-type value: " + grpcEncoding;
}
}
if (_headerValidationError != null)
{
// Response is not valid gRPC
// Clean up/cancel any pending operations
DisposeCore();
throw new InvalidOperationException(_headerValidationError);
}
// Success!
}
private Status?ValidateHeaders(HttpResponseMessage httpResponse)
{
Log.ResponseHeadersReceived(Logger);
if (httpResponse.StatusCode != HttpStatusCode.OK)
{
return(new Status(StatusCode.Cancelled, "Bad gRPC response. Expected HTTP status code 200. Got status code: " + (int)httpResponse.StatusCode));
}
if (httpResponse.Content?.Headers.ContentType == null)
{
return(new Status(StatusCode.Cancelled, "Bad gRPC response. Response did not have a content-type header."));
}
var grpcEncoding = httpResponse.Content.Headers.ContentType;
if (!GrpcProtocolHelpers.IsGrpcContentType(grpcEncoding))
{
return(new Status(StatusCode.Cancelled, "Bad gRPC response. Invalid content-type value: " + grpcEncoding));
}
else
{
// gRPC status can be returned in the header when there is no message (e.g. unimplemented status)
if (GrpcProtocolHelpers.TryGetStatusCore(httpResponse.Headers, out var status))
{
return(status);
}
}
// Call is still in progress
return(null);
}
private void ValidateHeaders()
{
// We don't want to throw in this method, even for non-success situations.
// Response is still needed to return headers in GetResponseHeadersAsync.
Log.ResponseHeadersReceived(Logger);
Debug.Assert(HttpResponse != null);
if (HttpResponse.StatusCode != HttpStatusCode.OK)
{
FinishResponse(throwOnFail: false, new Status(StatusCode.Cancelled, "Bad gRPC response. Expected HTTP status code 200. Got status code: " + (int)HttpResponse.StatusCode));
return;
}
if (HttpResponse.Content?.Headers.ContentType == null)
{
FinishResponse(throwOnFail: false, new Status(StatusCode.Cancelled, "Bad gRPC response. Response did not have a content-type header."));
return;
}
var grpcEncoding = HttpResponse.Content.Headers.ContentType.ToString();
if (!GrpcProtocolHelpers.IsGrpcContentType(grpcEncoding))
{
FinishResponse(throwOnFail: false, new Status(StatusCode.Cancelled, "Bad gRPC response. Invalid content-type value: " + grpcEncoding));
return;
}
else
{
if (TryGetStatusCore(HttpResponse.Headers, out var status))
{
// grpc-status is returned in the header when there is no message body
// For example, unimplemented method/service status
FinishResponse(throwOnFail: false, status);
return;
}
}
// Success!
}