public static async Task SendMessage <TResponse>(HttpApiServerCallContext serverCallContext, JsonSerializerOptions serializerOptions, TResponse message) where TResponse : class
{
var response = serverCallContext.HttpContext.Response;
try
{
GrpcServerLog.SendingMessage(serverCallContext.Logger);
object responseBody;
Type responseType;
if (serverCallContext.DescriptorInfo.ResponseBodyDescriptor != null)
{
// TODO: Support recursive response body?
responseBody = serverCallContext.DescriptorInfo.ResponseBodyDescriptor.Accessor.GetValue((IMessage)message);
responseType = JsonConverterHelper.GetFieldType(serverCallContext.DescriptorInfo.ResponseBodyDescriptor);
}
else
{
responseBody = message;
responseType = message.GetType();
}
await JsonRequestHelpers.WriteResponseMessage(response, serverCallContext.RequestEncoding, responseBody, serializerOptions);
GrpcServerLog.SerializedMessage(serverCallContext.Logger, responseType);
GrpcServerLog.MessageSent(serverCallContext.Logger);
}
catch (Exception ex)
{
GrpcServerLog.ErrorSendingMessage(serverCallContext.Logger, ex);
throw;
}
}
internal async Task ProcessHandlerErrorAsync(Exception ex, string method, bool isStreaming, JsonSerializerOptions options)
{
Status status;
if (ex is RpcException rpcException)
{
// RpcException is thrown by client code to modify the status returned from the server.
// Log the status and detail. Don't log the exception to reduce log verbosity.
GrpcServerLog.RpcConnectionError(Logger, rpcException.StatusCode, rpcException.Status.Detail);
status = rpcException.Status;
}
else
{
GrpcServerLog.ErrorExecutingServiceMethod(Logger, method, ex);
var message = ErrorMessageHelper.BuildErrorMessage("Exception was thrown by handler.", ex, Options.EnableDetailedErrors);
// Note that the exception given to status won't be returned to the client.
// It is still useful to set in case an interceptor accesses the status on the server.
status = new Status(StatusCode.Unknown, message, ex);
}
await JsonRequestHelpers.SendErrorResponse(HttpContext.Response, RequestEncoding, status, options);
if (isStreaming)
{
await HttpContext.Response.Body.WriteAsync(GrpcProtocolConstants.StreamingDelimiter);
}
}
public HttpApiServerCallContext(HttpContext httpContext, MethodOptions options, IMethod method, CallHandlerDescriptorInfo descriptorInfo, ILogger logger)
{
HttpContext = httpContext;
Options = options;
_method = method;
DescriptorInfo = descriptorInfo;
Logger = logger;
IsJsonRequestContent = JsonRequestHelpers.HasJsonContentType(httpContext.Request, out var charset);
RequestEncoding = JsonRequestHelpers.GetEncodingFromCharset(charset) ?? Encoding.UTF8;
// Add the HttpContext to UserState so GetHttpContext() continues to work
HttpContext.Items["__HttpContext"] = httpContext;
}
