I've been having trouble querying a web server for information from my Windows Phone 7 app, and from my research, I've traced it back to MaxBufferSize/MaxReceivedMessageSize being too low. The problem is, I can't figure out how to change it. Every search result I find talks about the application being a WCF app, and to change the binding in ServiceReferences.ClientConfig. The solution from this post gives this example:
1. edit the ServiceReferences.ClientConfig to accept a large buffer.
<binding name="BasicHttpBinding_MosaicService" maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647">
However, I'm not using a WCF app, and I don't know what the equivalents of the above, and ServiceReferences.ClientConfig are for a regular WP7 application. Can anyone give me some help with this? I've done my best to figure it out myself but I'm getting nowhere.
For reference, in case someone else is having the problem I was (it took a really long time to figure out that this may be the problem), this is what is happening to me: I'm getting a WebException with the message: "The remote server returned an error: NotFound" thrown. And the relevant section of the stacktrace is:
at System.Net.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state)
at System.Net.BrowserHttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
I'm not sure how you went from the error message "The remote server returned an error: NotFound" to thinking that your client can't handle the size of the response. Much more likely, the error message is correct and the URL you are requesting can't be found. Drop a breakpoint in your code where you kick off the request. What is the RequestUri property set to on your HttpWebRequest object? Copy that URL into a browser and you'll more than likely see that you get a "page not found". Fix your incorrect URL and all will be well.
Related
Okay I tried to play a little bit with the StatsManager but I always got an exception trying to use anything with it when comes to
Set a stat
Get a stat
Because I doubted myself I had the idea just to use the UWPIntegration sample that is on Github . I also added the Leaderboard items to my own project so the code works with my test sandbox. Logging in works as it should just StatsManager causes the issues.
But as with my own code I just get the same error / exception which is the following. I assume there is a bug in the code provided or the service configuration is not working as intended.
System.AggregateException occurred HResult=0x80131500 Message=One or more errors occurred. Source= StackTrace: at
System.Threading.Tasks.Task1.GetResultCore(Boolean
waitCompletionNotification) at
Microsoft.Xbox.Services.XboxLiveHttpRequest.<>c__DisplayClass35_0.<GetResponseWithAuth>b__1(Task1
getResponseTask) in
D:\Data\VisualStudio\Projects\xbox-live-api-csharp\Source\api\XboxLiveHttpRequest.cs:line
117 at System.Threading.Tasks.Task.Execute()
Inner Exception 1: AggregateException: One or more errors occurred.
Inner Exception 2: WebException: The remote server returned an error:
(404) Not Found.
Issue was found. My service.config used a wrong parameter name, see below in the comments of the solution.
There are a few different reasons why this might be the case. Not surprisingly, it means the cloud can't find the stat you've requested.
If you use Fiddler, you can capture the call and share with me the correlationID header. If you don't know Fiddler, let me know and I can help you.
However, some ideas off the top of my head
Make sure that you're in development mode - your sandbox is the one from the dev center site. If you aren't sure, you can use the Windows Device Portal to see what your sandbox is - just click on Xbox Live in the left hand navigation.
Make sure you have hit "Test" on the dev center page where you defined your featured stats and leaderboards.
Make sure you are requesting the stat by the ID name you specified in the config window, not the display name.
This kind of question has been asked several times, and I understand why it happens, and probably nothing we can do about it except retry.
I do have one question on name resolution though.
I am using AWS .Net SDK for 3.5 .Net. I am uploading a big file (>500MB up to 1.5GB, medical images). I call TransferUtility.Upload() method.
For most part the program works great.
Occasionally we get this error in the middle of the upload. Usually happens when the internet is slow.
I can catch the exception and retry, which means rery from the beginning since exception happens inside the AWS code.
My question is, if the program has resolved the s3 bucket name and has been uploading for a while why would it give me name resolution error instead of just using the cached resolved name?
Does each thread resolve the name independently and one of thread is failing since the network is saturated? Is this a computer setting? This error we were able to reproduce pretty consistently on a Windows 10 machine with Charter as ISP uploading a 800MB file.
The error occurred after about 250MB upload was done.
This is the actual exception
Exception during upload :Amazon.Runtime.AmazonServiceException:
A WebException with status NameResolutionFailure was thrown. --->
System.Net.WebException: The remote name could not be resolved: 'my-bucket.s3.amazonaws.com'
This web exception is telling you the there was an issue with the "Name Resolution". What it doesn't tell you is that the "name" it's referring to is the "EndpointRegion", for example: USEast1, USEast2 etc.
When using the Amazon.S3.Transfer.Transferutility it's crucial that the EndpointRegion you use in the Upload call MATCHES that of the bucket you're uploading into.
In my case using RegionEndpoint.GetBySystemName("USEast1") vs RegionEndpoint.GetBySystemName("US-East-1") was the difference maker.
Another cause for this issue could be DNS resolution. If your system is not able to perform DNS resolves it will give you this same error.
I'm writing a Silverlight application that needs to interface with a server via GET/POST requests. My code looks like the following:
Uri serviceUri = new Uri(my_URI);
WebClient client = new WebClient();
client.OpenReadCompleted += new OpenReadCompletedEventHandler(OnRequestComplete);
client.OpenReadAsync(serviceUri);
However, when the callback function is called, I am getting a System.Security.SecurityException. I've read multiple questions on here from people with similar errors, however all of their issues seem to stem from cross domain issues while debugging. When I run my code, it runs with http://localhost:... as the domain, so that shouldn't be the issue I don't think. Here's the full error if that helps at all:
{System.Security.SecurityException: Security error.
at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult)
at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClassa.<EndGetResponse>b__9(Object sendState)
at System.Net.Browser.AsyncHelper.<>c__DisplayClass4.<BeginOnUI>b__0(Object sendState)}
Thanks for any help. This has been a very frustrating issue.
UPDATE:
I screwed around with it a lot and eventually got everything to work. Not 100% what did it though... I ended up copy/pasting the clientaccesspolicy.xml and crossdomain.xml files everywhere imaginable, created a new Silverlight project and copied everything there, along with a few other things. If anyone else runs into this problem, that's about as much advice as I have to give :/
I think it is still violates same-origin policy because the port numbers don't match: i.e. the XAP uri's port and the my_URI port do not match. And hence the System.Security.SecurityException. Could you try hosting the my_URI relative to your XAP.
Or even better, can you try interacting with the server using WCF.
I have WCF method like so:
public string GetSomething(MyObject obj)
{
return "Something";
}
When I call this from my silverlight app I get an error:
System.Net.WebException: The remote server returned an error: NotFound.....
I call the method from my silverlight app like so:
mProxy.GetSomethingAsync(new MyObject());
Now, when I call the method like this it works fine:
mProxy.GetSomethingAsync(null);
So there seems to be some problem with passing in a complex object.
Note that I return this MyObject from other method and it works fine so it's not a serializable issue. I also changed the maxBufferSize and maxReceivedMessageSize to the max value so it's not that, and i pass in an empty object anyway so it shouldn't be a size issue. And MyObject only contains simple datatypes.
Has anyone any suggestions?
That "Not Found" error is perhaps the single most annoying feature of Silverlight WCF access.
You may want to look into the Service Trace Viewer Tool (here). It's not always helpful (I've run into lots of problems that it wasn't able to help with), but about 10-20% of the time, it'll point me in the right direction.
You may also want to try adding the SilverlightFaultBehavior to your service. It can turn at least some of those "Not Found" error messages into real faults.
I have used the WcfTestClient.exe to debug my WCF services. It gives a much more user friendly error message. If you want to set up Silverlight to receieve WCF faults, I found this page on Data Performance and Fault Strategies in Silverlight 3
to be helpful.
(http://msdn.microsoft.com/en-us/magazine/ee294456.aspx)
A customer using a ASP.NET program I have just sent them is experiencing the error below, I had personally tested the program on 4 web server IIS6, 7, and 7.5, on 4 different networks and I never got this, the customer is using IIS6 with .Net 2.0 (as required). The program uses Windows authentication which may or may not be part of the problem. I'm stuck I don't know where to start with this. Any help is very much appreciated.
Sys.WebForms.PageRequestManagerServerErrorException:
An unknown error occurred while
processing the request on the server.
The status code returned from the
server was: 500
HTTP error code 500 simply means "something bad happened on the server, but we're not going to tell you what that was".
You have to "ask" the server machine what went wrong. Look into the Windows event logs, the IIS logs, or your application's own logs to find out what the "something" is.
This error often means that there is some exception thrown inside your code, e.g. because a reference is null or something else.
If you have < > / characters in your web form you will get this error.
Try placing ValidateRequest="false" in the page directive of your page.
If you have < > / characters in your web form you will get this error.
You must insert space or single quotation mark, right and left
for example :
false: 1<TR<5
True:1< TR <5 or 1<'TR'<5