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New Post: Combining a Web API into ASP.NET WebPages

sumiflow — Tue, 23 Apr 2013 15:47:21 GMT

I'm having the same issue when I added a razor helper class. I get 'ASP.global_asax' not defined errors but it still compiles and runs fine as far as I can tell. Please let me know if you ever find a solution. Thanks.

New Post: CheckConditionalRetrieve doesn't feel quite right

draepetan — Tue, 12 Feb 2013 19:09:41 GMT

We don't have CheckConditionalRetrieve (which has a ton of issues, but you can easily access the IfMatch, IfNoneMatch headers to do whatever logic you like. We also offer the new processor model for addressing such concerns outside the operation as a cross-cutting concern.

So I guess let me ask this: if I were to run an operation inside of my service and generate an eTag string, what is the equivalent (using HttpRequestMessage) to saying:

_webOperationContext.IncomingRequest.CheckConditionalRetrieve(etag);

(where etag is a string)

Our previous code would run CheckConditionalRetrieve and catch the exception (if matched) by setting the OutgoingResponse code to 304 and supressing the body.

New Post: Streaming Metro service

phlaz — Wed, 19 Sep 2012 07:12:20 GMT

Ok, I'm a little confused. So was the WCF Express Interop Bindings project part of the original WCF Web API? And now the same functionality that existed in the interop bindings is part of ASP.NET Web API? I have an existing streaming service over a net.tcp binding that needs to be consumed by a java client, will the ASP.NET Web API will allow me to do that? I dont really want to rewrite the service but rather just add a binding that the java client understands. I figured a Metro binding would do the job.

New Post: Streaming Metro service

HenrikN — Tue, 18 Sep 2012 22:03:07 GMT

WCF Web API is no longer actively being developed (please see the announcement on the project home page). You can either use WCF as part of .NET 4 or .NET 4.5 or you can use ASP.NET Web API. The latter is also available as open source on Codeplex.

We have a sample for asynchronously streaming data in ASP.NET Web API -- you can find a detailed description in the blog Async Streaming in ASP.NET Web API and the source is available on Codeplex -- see the VS 2010 version and VS 2012 version for details. For a full list of samples, please see the blog List of ASP.NET Web API and HttpClient Samples.

Thanks,

Henrik

New Post: Streaming Metro service

phlaz — Tue, 18 Sep 2012 07:29:05 GMT

Hi guys. I'm trying to create a streaming service using the interop bindings, but transferMode is not supported by metroBinding in the config file. I'm taking the same approach as I would a standard WCF service. Is there another way to do this or is streaming not supported by a Metro binding?

Thanks very much

New Post: WCF Web API self-host in a dedicated port

stephen2410 — Thu, 16 Aug 2012 04:04:05 GMT

Hey,

We use WCF RESTFUL Services , with configuration

binding="webHttpBinding" bindingConfiguration="HttpStreaming" transferMode="StreamedResponse" , aspNetCompatibilityEnabled="true"

and compression, listening in a dedicated port , with SSL certificate on the port.

Can we do exactly the same with the new ASP.NET Web API ?

thanks

Stefan

New Post: WCF service works on the same box but does not respond in distributed environment

stevemauldin — Fri, 29 Jun 2012 17:03:20 GMT

I have created a WCF Service Library, a windows NT service to host it on my server, and a client application to consume my WCF Service. With all three running on the same box they work as I would expect but when I try and run the client application on a different machine it just times out without getting an workable error message. I thought it was a credentials issue so I added the following code to my client application without any success.

Dim proxy = New ShipService.ShipServiceClient()

proxy.ClientCredentials.Windows.ClientCredential.Domain = "<Domain>"

proxy.ClientCredentials.Windows.ClientCredential.UserName = "<UserName>"

proxy.ClientCredentials.Windows.ClientCredential.Password = "<Password>"

I have tried multiple different things like setting SPN, UPN and DNS within the Identity of the endpoint. I have even tried syncronizing the clock between machines without any success. Also of note: there are no firewalls between the machines, they are on the same domain, the logged on user was the same on both machines and has admin rights on both, the client credentials provided were admin level with full rights to both boxes. It feels like clientcredentialType=windows is checking some other security to validate the client other than proxy.ClientCredentials.windows.clientcredential. Can someone shed any light as to why it works great when both client and service are on the same box but times out when they are on different machines?

Here are my WCF Service Library bindings, endpoints, etc.

<bindings>
      <netTcpBinding>
        <binding name="ShipServiceNetTCPEndPoint" 
                 closeTimeout="00:01:00"
                 openTimeout="00:01:00" 
                 receiveTimeout="00:10:00" 
                 sendTimeout="00:01:00"
                 transactionFlow="false" 
                 transferMode="Buffered" 
                 transactionProtocol="OleTransactions"
                 hostNameComparisonMode="StrongWildcard" 
                 listenBacklog="10" 
                 maxBufferPoolSize="524288"
                 maxBufferSize="65536" 
                 maxConnections="10" 
                 maxReceivedMessageSize="65536">
              <readerQuotas maxDepth="32" 
                            maxStringContentLength="8192" 
                            maxArrayLength="16384"
                            maxBytesPerRead="4096" 
                            maxNameTableCharCount="16384" />
              <reliableSession ordered="true" 
                               inactivityTimeout="00:10:00"
                               enabled="false" />
              <security mode="Transport">
                     <transport clientCredentialType="Windows" 
                                protectionLevel="EncryptAndSign" />
                     <message clientCredentialType="Windows" />
              </security>
         </binding>
      </netTcpBinding>
    </bindings>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ShipServiceBehavior">
          <serviceAuthorization impersonateCallerForAllOperations="false"/>
          <serviceMetadata httpGetEnabled="false"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="ShipServiceBehavior" name="ServiceLibrary.ShipService">
        <endpoint address="" binding="netTcpBinding" bindingConfiguration="" name="ShipServiceNetTCPEndPoint" contract="ServiceLibrary.IShipService">
        </endpoint>
        <endpoint address="mex" binding="mexTcpBinding" bindingConfiguration="" name="ShipServiceMexTCPEndPoint" contract="IMetadataExchange"/>
        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://192.168.1.54:58000/ShipService"/>
          </baseAddresses>
        </host>
      </service>
    </services>

Here are my client application bindings and endpoints:

<bindings>
      <netTcpBinding>
        <binding name="ShipServiceNetTCPEndPoint" closeTimeout="00:01:00"
            openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
            transactionFlow="false" transferMode="Buffered" transactionProtocol="OleTransactions"
            hostNameComparisonMode="StrongWildcard" listenBacklog="10"
            maxBufferPoolSize="524288" maxBufferSize="65536" maxConnections="10"
            maxReceivedMessageSize="65536">
          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
              maxBytesPerRead="4096" maxNameTableCharCount="16384" />
          <reliableSession ordered="true" inactivityTimeout="00:10:00"
              enabled="false" />
          <security mode="Transport">
            <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
            <message clientCredentialType="Windows" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>
      <client>
        <endpoint address="net.tcp://192.168.1.54:58000/ShipService"
            binding="netTcpBinding" bindingConfiguration="ShipServiceNetTCPEndPoint"
            contract="ShipService.IShipService" name="ShipServiceNetTCPEndPoint">
          <identity>
            <userPrincipalName value="user@domain.net" />
          </identity>
        </endpoint>
      </client>

New Post: How to pass data between Message/Operation and ServiceContract

racielrod — Fri, 15 Jun 2012 21:12:55 GMT

Glenn,

Still on Preview 6, and wondering a clean way to pull out values from request.Properties w/o having to write the same code over and over again on each resource/operation. Is there any place/hook that allow me to do this?

Imagine I'm validating a API key/token in a MessageHandler and upon success I want to send some information that ALL resources/endpoints requiring authorization would use for audit purposes. If I can find a common place where to do this, and set HttpContext.Current.Items with those properties and wrap that in a static class, then it would be easy to use that static class on every endpoint aforementioned.

Is this possible?

Thanks,

Raciel

New Post: HttpContext.Current is null on the initial request.

racielrod — Fri, 15 Jun 2012 20:59:08 GMT

Darrel,

I know this is an old post, but I'm on Preview 6 (we haven't migrated to ASP.NET WebApi yet) and I'm passing my api token (after auth granted) through the request properties.

This token contains encrypted information about the destination of the operation: tenant, login, etc. Is there a way in Preview 6 to set this token in HttpContext.Current.Items so it is available across the request w/o having to do it on every resource operation?

Thanks,

Raciel

New Post: Bigshelf sample app

MichaelDBang — Wed, 06 Jun 2012 11:02:17 GMT

New Post: Custom Formatter not getting called (solved)

ricardobentes — Thu, 31 May 2012 15:13:28 GMT

Yep, that was it.

Man this is embarassing...

Thanks a lot for your help gblock! :)

New Post: Custom Formatter not getting called (solved)

ricardobentes — Thu, 31 May 2012 15:00:19 GMT

Oh man!

I'm so dumb! I've confused write and read and overrode wrong one!

I'll try that right now!

New Post: Custom Formatter not getting called (solved)

ricardobentes — Thu, 31 May 2012 15:00:19 GMT

Oh man!

I'm so dumb! I've confused write and read and overrode wrong one!

I'll try that right now!

New Post: Custom Formatter not getting called (solved)

ricardobentes — Thu, 31 May 2012 14:58:36 GMT

Hi!

Thank you for your reply!

Yes, just like in the example:

protected override bool CanReadType(Type type)
        {
            return true;
        }

New Post: Custom Formatter not getting called (solved)

gblock — Thu, 31 May 2012 14:39:39 GMT

Did you also override CanWriteType?

Sent from my Windows Phone

From: ricardobentes
Sent: 5/31/2012 7:35 AM
To: Glenn Block
Subject: Custom Formatter not getting called [wcf:357855]

From: ricardobentes

Hi!

I followed an example in Contact Manager sample project and am trying to return a jpg through a Web API Get call, the formatter is inserted but not called when sending the response.

Detailed steps I took:

Created my custom Formatter and overriden the OnWriteToStream method.
Created a sub-class of DelegatingHandler and overriden SendAsync in order to change the request's Header accept value to "image/jpeg"
In Global.asax.cs, Application_Start() I insert the new custom Formatter into the beginning of the configuration Formatter list.
Run the application and from chrome I send the request to the API.
The request is caught by the handler and modified to accept only "image/jpg" Mime type
The controller does it's thing and returns a HttpResponseMessage<myClass> with the results Header content type changed to "image/jpeg"
the results returns to chrome in JSon format without passing through my formatter class.

Any idea of what I might be doing wrong?

I can provide sample code or a sample project if it helps.

Thanks in advance!

Take care,

Ricardo

New Post: Custom Formatter not getting called (solved)

ricardobentes — Thu, 31 May 2012 14:34:39 GMT

Hi!

I followed an example in Contact Manager sample project and am trying to return a jpg through a Web API Get call, the formatter is inserted but not called when sending the response.

Detailed steps I took:

Created my custom Formatter and overriden the OnWriteToStream method.
Created a sub-class of DelegatingHandler and overriden SendAsync in order to change the request's Header accept value to "image/jpeg"
In Global.asax.cs, Application_Start() I insert the new custom Formatter into the beginning of the configuration Formatter list.
Run the application and from chrome I send the request to the API.
The request is caught by the handler and modified to accept only "image/jpg" Mime type
The controller does it's thing and returns a HttpResponseMessage<myClass> with the results Header content type changed to "image/jpeg"
the results returns to chrome in JSon format without passing through my formatter class.

Any idea of what I might be doing wrong?

I can provide sample code or a sample project if it helps.

Thanks in advance!

Take care,

Ricardo

New Post: how to force web api serializer using querystring

HenrikN — Mon, 21 May 2012 06:38:43 GMT

I don't see that with the latest bits - I get JSON as the default format. If you are running the beta bits then it may be a bug -- we have added better support for wildcards and the like since then.

New Post: how to force web api serializer using querystring

nlivni — Mon, 21 May 2012 04:23:39 GMT

Great!

Thank you!

How do I set up the json formatter as the default? (when no querystring is present)

Right now, it defaults to xml

Thanks,

Netanel

From: [email removed]
To: [email removed]
Date: Sun, 20 May 2012 08:55:59 -0700
Subject: Re: how to force web api serializer using querystring [wcf:356432]

From: HenrikN

Here's how you do it: You create a QueryStringMapping and register it with the formatters that you want to respond this way. On your HttpConfiguration object, do the following:

            QueryStringMapping xmlMapping = new QueryStringMapping("type", "xml", "application/xml");
            QueryStringMapping jsonMapping = new QueryStringMapping("type", "json", "application/json");
 
            config.Formatters.XmlFormatter.MediaTypeMappings.Add(xmlMapping);
            config.Formatters.JsonFormatter.MediaTypeMappings.Add(jsonMapping);

Thanks,

Henrik

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New Post: how to force web api serializer using querystring

HenrikN — Sun, 20 May 2012 15:55:55 GMT

Here's how you do it: You create a QueryStringMapping and register it with the formatters that you want to respond this way. On your HttpConfiguration object, do the following:

            QueryStringMapping xmlMapping = new QueryStringMapping("type", "xml", "application/xml");
            QueryStringMapping jsonMapping = new QueryStringMapping("type", "json", "application/json");
 
            config.Formatters.XmlFormatter.MediaTypeMappings.Add(xmlMapping);
            config.Formatters.JsonFormatter.MediaTypeMappings.Add(jsonMapping);

Thanks,

Henrik

New Post: how to force web api serializer using querystring

nlivni — Sun, 20 May 2012 12:54:59 GMT

Hello,

I want to control the dataformat returned by my webapi using querystring but can not figure out how to do this.

What I want is

http://myhost.com/api/items?type=json

http://myhost.com/api/items?type=xml

No matter what I do, I get xml.

This should not be hard, what am I missing?