public static WebException CreateWebException(WebException webException, string title = null)
{
if (webException == null)
{
throw new ArgumentNullException("webException");
}
switch (webException.Status)
{
case WebExceptionStatus.NameResolutionFailure:
return(new NameResolutionFailureWebException(title ?? webException.Message, webException));
case WebExceptionStatus.ConnectFailure:
return(new ConnectFailureWebException(title ?? webException.Message, webException));
case WebExceptionStatus.ConnectionClosed:
return(new ConnectionClosedWebException(title ?? webException.Message, webException));
case WebExceptionStatus.ProtocolError:
HttpWebResponse errorResponse = webException.Response as HttpWebResponse;
if (errorResponse == null)
{
return(new WebProtocolException(title ?? webException.Message, webException));
}
WebProtocolException webProtocolException = CreateProtocolException(webException, title);
webProtocolException.StatusCode = (int)errorResponse.StatusCode;
webProtocolException.StatusDescription = errorResponse.StatusDescription;
return(webProtocolException);
case WebExceptionStatus.Timeout:
return(new TimeoutWebException(title ?? webException.Message, webException));
case WebExceptionStatus.RequestCanceled:
return(new RequestCanceledWebException(title ?? webException.Message, webException));
default:
return(webException);
}
}
protected internal WebException HandleWebException(ClientExecutionContext context, WebException webEx)
{
using (webEx.Response)
{
HttpWebResponse errorResponse = webEx.Response as HttpWebResponse;
if (errorResponse == null)
{
if (webEx is WebExceptionBase)
{
return(webEx);
}
return(ExceptionFactory.CreateWebException(webEx));
}
if (webEx.Status == WebExceptionStatus.ProtocolError)
{
string title = string.IsNullOrWhiteSpace(errorResponse.StatusDescription) ? webEx.Message : errorResponse.StatusDescription;
WebProtocolException serviceEx = null;
if (webEx is WebProtocolException)
{
serviceEx = (WebProtocolException)webEx;
}
else
{
serviceEx = (WebProtocolException)ExceptionFactory.CreateWebException(webEx, title);
}
try
{
using (Stream stream = errorResponse.GetResponseStream())
{
if (errorResponse.ContentType.MatchesContentType(context.ContentType))
{
var bytes = stream.ReadFully();
using (var memoryStream = new MemoryStream(bytes))
{
serviceEx.ResponseBody = bytes.FromUtf8Bytes();
serviceEx.ResponseObject = (GenericErrorResponseType)context.CallFormat.StreamDeserializer(typeof(GenericErrorResponseType), memoryStream);
}
}
else
{
serviceEx.ResponseBody = stream.ToUtf8String();
}
}
}
catch (Exception innerEx)
{
// Oh, well, we tried
return(new WebProtocolException(title, innerEx)
{
StatusCode = (int)errorResponse.StatusCode,
StatusDescription = errorResponse.StatusDescription,
ResponseBody = serviceEx.ResponseBody
});
}
//Escape deserialize exception handling and throw here
return(serviceEx);
}
return(webEx);
}
}
