April CTP: wcf

Showing posts with label wcf. Show all posts

Saturday, March 24, 2012

WCF and ASP.NET 3.5 RTM integration on different sites - 404 errors

Hello,

Setup 1:

Project with WCF service in it .svc file has Factory="System.ServiceModel.Activation.WebScriptServiceHostFactory", web.config does not include <system.ServiceModel> junk. We've got your standard config-free json service that has been hyped. VS 2008 web dev server url (simplicity sake here):http://localhost:1/service.svc

Seperate Project with ASP.NET application in it. ScriptManager has a service reference to the above svc file at (http://localhost:1/service.svc). Javascript on the page invokes a method in the service. VS 2008 web dev server url (simplicity again):http://localhost:2/webform.aspx

Runtime 1:

JS "proxy class" is successfully downloaded from the service (http://localhost:1/service.svc/jsdebug)

JS Object contructed from the proxy class.

Error on invocation of service method - 404 not found!

Fiddler says proxy class is invoking the service athttp://localhost:2/service.svc/myServiceMethod. Please note the port there, it should behttp://localhost:1 not 2! 2 is the site where the webform is being hosted at.

Config 2:

Move the WCF project onto local IIS 7.0 (Vista).

Update script reference to the service tohttp://[machinename]/serviceVD/service.svc

Runtime 2:

JS "proxy class" is successfully downloaded from the service (http://[machinename]/serviceVD/service.svc/jsdebug)

JS Object contructed from the proxy class.

Error on invocation of service method - 404 not found!

Upon inspection the proxy class is invoking the service athttp://localhost:2/serviceVD/service.svc/myServiceMethod. Please note the port there, it should behttp://[machinename]/serviceVD nothttp://localhost:2! Again the root of the url is being pulled from where the webform is being hosted.

All the references I've seen and have gotten to work include the WCF service in the same project as the webform that is calling them. How do I call remote service on another site or machine?

Not sure if it will help but it hass some good info of Asp.net Ajax with WCF by Dino Esposite
http://dotnetslackers.com/articles/ajax/JSON-EnabledWCFServicesInASPNET35.aspx

WCF AJAX Enabled Service and looping through Dictionary<string,string>

I hope someone can help me on this. I've tried every sample and cant seem to figure it out. I'm returning a Dictionary<string,string> from a WCF Service using Visual 2008 with .Net 3.5.

public Dictionary<string, string> RetrieveNavigationStylesLists()
{
Dicationary<string,string> data = null;

...

data = new Dictionary<string, string>();
data.Add("StyleID", styles[loop][0].ToString());
data.Add("Style", styles[loop][1].ToString());
data.Add("Default", styles[loop][2].ToString());

return data;

}

in my javascript i've tried the following:

...
// WCF Service is invoked an on success calls the function below

function onNavigationSuccess(args)
{
for(var data in args)
{
var key = data;
var keyValue = args[data];

}
}

But when i loop through the data i get only

loop 1:
key = 0
keyValue =
-key = "StyleID"
-value = "2"

loop 2:
key = 1
keyValue =
-key = "Style"
- value = "Page Title"

I cant seem to get the key name or the key value

If i look at args is contains the following data:

args = [0]
which has key="StyleID" and value="2"
[1]
which has key="Style" and value="Page Title"
[2]
which has key="Default" and value="False"

I've tried every sample that is available but cant seem to get it to work

Thanks

check this hope it helpshttp://wiki.freaks-unidos.net/javascript-libraries

WCF 3.5 ajax webservice compilation error

I had AJAX ScriptService, which I converted to WCF 3.5 webservice.

Everything works fine for some time, but after a while (maybe after session timeouts or IIS recycles process) it stops working, and I get this error in Event Log:

WebHost failed to process a request.
Sender Information: System.ServiceModel.Activation.HostedHttpRequestAsyncResult/19949373
Exception: System.ServiceModel.ServiceActivationException: The service '/ve/MapService.svc' cannot be activated due to an exception during compilation. The exception message is: Could not load file or assembly 'App_Web_nao50rcd, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.. --> System.IO.FileNotFoundException: Could not load file or assembly 'App_Web_nao50rcd, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
File name: 'App_Web_nao50rcd, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'
at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Reflection.Assembly.Load(String assemblyString)
at System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].
-- End of inner exception stack trace --
at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
Process Name: w3wp
Process ID: 2480

Webservice is using sessions and the code is inside /App_Code/ folder.

Any suggestions?

I tried to disable ASP.Net compatibility mode (required for sessions) and then everything works fine for MUCH longer (maybe 8 hours?), but after a while i still get the same error.

Can you please show the WCF configuration as well as how you're registering the service in the webapp.

web.config:

<system.web>
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add path="*_AppService.axd" verb="*" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
<add path="ScriptResource.axd" verb="GET,HEAD" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>
...
</system.web>

<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<modules>
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
<handlers>
<remove name="ScriptHandlerFactory"/>
<remove name="ScriptHandlerFactoryAppServices"/>
<remove name="ScriptResource"/>
<remove name="WebServiceHandlerFactory-Integrated"/>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</handlers>
</system.webServer>

<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CSharp.CSharpCodeProvider,System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">
<providerOption name="CompilerVersion" value="v3.5"/>
<providerOption name="OptionInfer" value="true"/>
<providerOption name="WarnAsError" value="false"/>
</compiler>
</compilers>
</system.codedom>

<system.serviceModel>
<bindings>
<webHttpBinding>
<binding name="jsonBinding" maxReceivedMessageSize="655360" />
</webHttpBinding>
</bindings>
<behaviors>
<endpointBehaviors>
<behavior name="MapServiceAspNetAjaxBehavior">
<enableWebScript />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior name="metadataSupport">
<serviceMetadata httpGetEnabled="true" httpGetUrl="" />
<serviceDebug includeExceptionDetailInFaults="true" />
<dataContractSerializer />
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
<services>
<service behaviorConfiguration="metadataSupport" name="MapService">
<endpoint address="" behaviorConfiguration="MapServiceAspNetAjaxBehavior"
binding="webHttpBinding" bindingConfiguration="jsonBinding" contract="MapService" />
</service>
</services>
</system.serviceModel>

MapService.svc:

<%@.ServiceHostLanguage="C#"Debug="true"Service="MapService"CodeBehind="~/App_Code/MapService.cs" %>

MapService.cs:

[ServiceContract(Namespace = "SCi", Name = "MapService")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
public class MapService { ... }

Also - same error happens when running on IIS or VS built-in ASP.Net Development Server...

do you find the problem?

I think the problem is related to IIS7 - cause seems like problem is happening only on my dev machines which are running Vista Ultimate 64 bit. Though few times it happened on Windows 2003 Server x32, but it does not happen all the time like on Vista.

WCF ASP.NET Service not working - what am I missing

Hello. This is a simple question, so please take a look.

I am using Orcas Beta2 and I created a new Solution. In there added a Web Application Project. In the project I created an Ajax enabled WCF service. When I call the service from JavaScript I get this error: Service1 is not defined. What am I missing? Here is the very simple code. Thanks!

default.aspx:

<%@dotnet.itags.org. Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript">
function Hello() {
WebApplication1.Service1.HelloWorld(onComplete, onTimeout);
}
function onComplete(result) {
alert(result);
}
function onTimeout(result) {
alert("Timed out!");
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<input type="button" value="Call Hello" onclick="Hello()" />
</div>
</form>
</body>
</html>

namespace WebApplication1
{
[ServiceContract]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Service1
{
// Add [WebGet] attribute to use HTTP GET
[OperationContract]
public string HelloWorld()
{
return "helooo";
}
}
}

code for the service:

web.config (this is generated by VS2008 and i did not modify it):

<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
</configSections>
<appSettings/>
<connectionStrings/>
<system.web>

<compilation debug="true">
<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Data.DataSetExtensions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
</assemblies>
</compilation>

<authentication mode="Windows"/>
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.

Thanks!

Checkout the following post:
http://odetocode.com/Blogs/scott/archive/2007/07/30/11171.aspx

Yep, I'm guessing this is what you're missing. Afraid you can't get away with just .html as the client. You'll have to create an .aspx page.

Factory="System.ServiceModel.Activation.WebScriptServiceHostFactory" %>

Thanks Kazi,

I tried this and ran into other problems. See http://forums.asp.net/p/1170276/1956960.aspx#1956960

I thought that the default out of the box experience should be easy. It seems that it is not and one needs to fully understand te WCF model before getting anything to work. And WCF is a big monster to learn just to expose a simple REST service.

Jonathan,

Sorry for cutting and pasting only part of the aspx file. i updated the post and included all of the aspx file. Yes, i am using an aspx file and not an html file. Otherwise it would not compile. I tried adding the Factory to the svc file but it did not work for other reasons. It would be nice if someone, (hello Microsoft! :)) would post steps to create a simple service and how to consume it via an aspx page. This was dead simple in asmx, but wcf has just too many knobs and it seems that detailed knowledge of wcf is required to get this to work.

Thanks!

WCF compatible versions

Will the most recent version of the WCF ( in WinFX runtime version 3.0.3906.22 -- on XP) work with the current release of Atlas? Or, must I use the February CTP?

Thanks,

Jack

I have found that Atlasdoes notsupport the May CTP release of WCF. This is because the ServiceHostFactory class has been moved from System.ServiceModel namespace to System.ServiceModel.Activation namepsace. So the Microsoft.Web.ServiceModel is broken.

WCF Hosted in IIS over SSL

I've got a Windows Communication Foundation service that I'm hosting in IIS 6 and running over SSL using a certificate that I created using selfssl. I'm able to view the .svc with no errors in IE but when I tried to add a service reference to it in Visual Studio I got the following error:

Error: Cannot obtain Metadata from https://localhost:777/AuthService.svc

If this is a Windows (R) Communication Foundation service to which you have access, please check that you have enabled metadata publishing at the specified address. For help enabling metadata publishing, please refer to the MSDN documentation at http://go.microsoft.com/fwlink/?LinkId=65455.

WS-Metadata Exchange Error

URI: https://localhost:777/AuthService.svc

Metadata contains a reference that cannot be resolved: 'https://localhost:777/AuthService.svc'.

Could not establish trust relationship for the SSL/TLS secure channel with authority 'localhost:777'.

The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

The remote certificate is invalid according to the validation procedure.

HTTP GET Error

URI: https://localhost:777/AuthService.svc

There was an error downloading 'https://localhost:777/AuthService.svc'.

The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

The remote certificate is invalid according to the validation procedure.

I checked the article it referenced in the error message and I can't find anything I've got setup wrong. Thanks in advance for any help. Here's my config file:

system.serviceModel>

bindings>

wsHttpBinding>

bindingname="sslTest">

securitymode="Transport">

transportclientCredentialType="None"/>

security>

binding>

wsHttpBinding>

bindings>

services>

servicename="HEI.Auth.BL.AuthUtil"behaviorConfiguration="myServiceBehavior">

endpointaddress=""binding="wsHttpBinding"bindingConfiguration="sslTest"contract="HEI.Auth.BL.Interfaces.IAuthenticate" />

endpointcontract="IMetadataExchange"binding="mexHttpsBinding"address="mex"/>

host>

baseAddresses>

addbaseAddress="https://localhost:777/AuthService"/>

baseAddresses>

host>

service>

services>

behaviors>

serviceBehaviors>

behaviorname="myServiceBehavior">

serviceMetadatahttpsGetEnabled="true"httpsGetUrl=""/>

behavior>

serviceBehaviors>

behaviors>

system.serviceModel>Sorry if I missed something, but this doesn't appear to be related to ASP.NET AJAX. You might get better help on a WCF forum.
The reason I posted it here is because I did a search for wcf and this was about the only forum that had any posts for wcf. Anyway, it was a problem with my certificate. I created a certificate with selfssl but I didn't name it "localhost" so the certificate didn't match the site address. Once I made a new certificate with cn=localhost I was able to add the service reference in visual studio.

Wednesday, March 21, 2012

WCF problem with June CTP on WinFX Beta 2

The documentation states that "The WCF support in this version of "Atlas" requires Beta 2 of .NET Framework version 3.0."

Unfortunately, when I run the wcf_cs/Simple.aspx from the Atlas Documentation website (run as a filesystem) on Beta 2 (on XP SP2), I get the following stack trace:

[InvalidCastException: Unable to cast object of type 'System.Web.Compilation.BuildResultCustomString' to type 'System.Web.Util.ITypedWebObjectFactory'.] System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +161 System.Web.Compilation.BuildManager.GetCompiledType(VirtualPath virtualPath) +36 System.Web.Compilation.BuildManager.GetCompiledType(String virtualPath) +81 Microsoft.Web.Services.WebServiceData.GetWebServiceData(String virtualPath, Boolean failIfNoData) +271 Microsoft.Web.Services.WebServiceData.GetWebServiceData(String virtualPath) +30 Microsoft.Web.UI.ScriptManager.BuildScriptElement(String servicePath) +399 Microsoft.Web.UI.ScriptManager.GetScriptReferences() +979 Microsoft.Web.UI.ScriptManager.RenderXmlScript(TextWriter writer) +110 Microsoft.Web.UI.ScriptManager.OnPagePreRenderComplete(Object sender, EventArgs e) +663 System.EventHandler.Invoke(Object sender, EventArgs e) +0 System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +96 System.Web.UI.Page.PerformPreRenderComplete() +32 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4796

Is there anyway to fix or workaround the above problem? Is there a configuration in which WCF will work with ATLAS?

Thanks, Jack

I was able to get the simple service WCF sample to work by pulling the relevant files out into a newly created Atlas enabled test website. I then quickly discovered that navigating (instead of trying to directly view or set simple.aspx as the start page in VS) to the simple service form in the Atlas Documentation website also worked. I'm not sure why -- I nested the service files in my test website and was still able to view it directly. As time permits, I'll see if I can find a cause.

At any rate, WCF appears (I've only tried the samles) to work with the June CTP of Atlas on WinFX Beta 2.

WCF Service Library

Can someone point me to links with sample code (preferably C#) where I can learn on developing WCF Service Library. I want to integrate my other projects that have my objects into the WCF Service Library project. Also I would like to know where I can learn more on best practices on how to develop .Net 3.5 applications using the service architecture and ajax.

Thanks

No one doing WCF?

Hi,

You can refer tothis documentto get start with WCF.