我正在使用Polly在调用Pittney Bowes Geocoder服务时捕获异常。我正在使用引发MessageProcessingException的g1client库。如果抛出此异常,我已经将调用包装在Polly网络策略中重试调用次数为3次,但Visual Studio坚持认为异常为“User-Unhandled”我需要修改哪些内容才能处理此异常? 我正在使用Visual Studio 2017社区版和C#4.6.1。在使用Polly时在VS调试器中报告异常用户未处理报告
try
{
var networkPolicy = Policy
.Handle<MessageProcessingException>()
.Or<Exception>()
.WaitAndRetry(
3,
retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
(exception, timeSpan, context) =>
{
System.Diagnostics.Debug.WriteLine("Exception being retried" + exception);
});
geocoderResponse = networkPolicy.Execute(() => geocoderService.Process(geocoderRequest));
}
catch (MessageProcessingException ex)
{
log.Error("MessageProcessingException calling the Geocoder service", ex);
throw ex;
}
catch (Exception ex)
{
log.Error("Exception calling the Geocoder service", ex);
throw ex;
}
的错误信息是:
g1client.MessageProcessingException occurred
HResult=0x80131500
Message=Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. Client timeout
Source=g1client
StackTrace:
at g1client.UTF8Serializer.DeserializeHashtable(NetworkStream networkStream)
at g1client.UTF8Serializer.GetMessage(NetworkStream networkStream)
at g1client.SocketGatewayConnection.ProcessBytes(Byte[] bytesIn)
at g1client.SocketGatewayConnection.Process(Message message)
at g1client.RemoteService.Process(Message message)
at Midas.Core.PBGeocoder.Geocoder.<>c__DisplayClass27_0.<Bulk2PassGeocode>b__2() in E:\Source Code\GitHub\Midas.Core\Midas.Core.PBGeocoder\Geocoder.cs:line 321
at Polly.Policy.<>c__DisplayClass75_0`1.<Execute>b__0(CancellationToken ct)
at Polly.Policy.<>c__DisplayClass27_0`1.<Execute>b__0(CancellationToken ct)
at Polly.RetrySyntax.<>c__DisplayClass11_0.<WaitAndRetry>b__1(CancellationToken ct)
at Polly.Retry.RetryEngine.Implementation[TResult](Func`2 action, CancellationToken cancellationToken, IEnumerable`1 shouldRetryExceptionPredicates, IEnumerable`1 shouldRetryResultPredicates, Func`1 policyStateFactory)
我想也追查为什么我得到这个错误,所以任何帮助调试,将是巨大也。我只是在我第一次打电话给服务时提出了很大的要求。在这种情况下,我发送了1000个地址进行处理。下一次运行请求将在一秒之内处理,但第一次不起作用。
Visual Studio调试器让我认为异常没有被正确处理。这是,波利政策多次正确地重复了这个呼叫。对我来说,这是由另一个问题进一步混淆,我的geocoderService对象没有完全重置之前再次调用。一旦我重新初始化geocoderService对象,一切正常。我也没有看到System.Diagnostics.Debug.WriteLine消息,因为我没有在库构建部分中选中定义的DEBUG常量。你的解释让我明白它应该!很好的解释! – user2197446