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  • WCF REST Compression

    - by PhilJ
    I have a REST service that returns a large chunk of XML, about 150k worth. e.g. http://xmlservice.com/services/RestService.svc/GetLargeXML Therefore I want to compress the response from the server, as GZIP should reduce this to something much smaller. Having searched everywhere I cannot for the life of me find an example of how to perform compression for WCF REST services. Help!! NOTE: My service is hosted by a third party and I CANNOT do this via IIS as it is not supported by them.

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  • WCF client service call very slow

    - by JohnIdol
    I have a WCF client (running on Win7) pointing to a WebSphere service. All is good from a test harness but when my calls to the service originate from an HttpHandler or a standard aspx page the calls are extremely slow (it takes up to 10 times longer) and not just the first time. If I send the exact same envelopes through Soap-UI or without an HttpHandler it's all good. If the envelope is the same the only thing left is the HttpHeader. What should I be looking for and is there some config setting that might do the trick? Any help appreciated!

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  • Tutorial: Simple WCF XML-RPC client

    - by mr.b
    Update: I have provided complete code example in answer below. I have built my own little custom XML-RPC server, and since I'd like to keep things simple, on both server and client side, what I would like to accomplish is to create a simplest possible client (in C# preferably) using WCF. Let's say that Contract for service exposed via XML-RPC is as follows: [ServiceContract] public interface IContract { [OperationContract(Action="Ping")] string Ping(); // server returns back string "Pong" [OperationContract(Action="Echo")] string Echo(string message); // server echoes back whatever message is } So, there are two example methods, one without any arguments, and another with simple string argument, both returning strings (just for sake of example). Service is exposed via http. Aaand, what's next? :)

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  • OData and custom WCF WebGet methods

    - by reinier
    I've created an OData endpoint (using entity framework, WCF data service) and added a custom test WebGet test method like so: [WebGet(UriTemplate = "{text}")] public IQueryable<string> SplitString(string text) { if (text == null) throw new DataServiceException("text not specified"); var result = (from s in text.Split('-') orderby s select s); return result.AsQueryable(); } and a config line: config.SetServiceOperationAccessRule("SplitString", ServiceOperationRights.All); However, no matter how I specify the url, I can not get the text param to be filled out. (it is always null). so: http://localhost/myservice.svc/SplitString/testtext does not work. What is the correct url format (or UriTemplate) one should use? The only examples I found of odata and WebGet only have an example method which doesn't have any parameters.

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  • Strange error occurring when using wcf to run query against sql server

    - by vondip
    Hi all, I am building an asp.net application, using II6 on windows server 2003 (vps hosting). I am confronted with an error I didn't receive on my development machine (windows 7, iis 7.5, 64 bit). When my wcf service tries launching my query running against a local sql server this is the error I receive: Memory gates checking failed because the free memory (43732992 bytes) is less than 5% of total memory. As a result, the service will not be available for incoming requests. To resolve this, either reduce the load on the machine or adjust the value of minFreeMemoryPercentageToActivateService on the serviceHostingEnvironment config element. and ideas??

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  • Cannot connect to one of my WCF services, not even with telnet

    - by Ecyrb
    I have six wcf services that I'm hosting in a windows service. Everything works great on my machine (Windows 7) but when I try it in production (Windows Server 2003) I cannot connect to one of my six services, ReportsService. I figured I must have a typo, but everything looks right. I've even rewritten that section of the config file just to be sure. I've turned on WCF tracing, but it never shows the call to my service; nothing helpful in there. I tried connecting to the port (9005) with telnet, but it failed. I can connect to all other services (ports 9001-4 and 9006) just fine. I thought that maybe there was a problem with port 9005, so I changed it to 9007 and still couldn't connect. I had one of my working services host on 9005 and it actually worked fine. So I'm pretty sure there's nothing wrong with the port or any firewall settings. Whatever port I tell ReportsService to use fails. Now I'm out of ideas. It seems like it's not hosting that one service, but I cannot get any information about why or what's wrong. Any ideas on what I could try to get that information? Or what might be wrong? The unhandled System.ServiceModel.EndpointNotFoundException I get when running my client is: Could not connect to net.tcp://localhost:9005/ReportsService. The connection attempt lasted for a time span of 00:00:01.0937430. TCP error code 10061: No connection could be made because the target machine actively refused it 172.0.0.1:9005. . My host's config file contains: <!-- Snipped other services to simplify for you. --> <endpoint binding="netTcpBinding" bindingConfiguration="customTcpBinding" contract="ServiceContracts.IReportsService" /> <endpoint binding="netTcpBinding" bindingConfiguration="customTcpBinding" contract="ServiceContracts.IUpdateData" /> IReportService is the one I'm having trouble with. I get a proxy to IReportsService with the following code, where Server is the name of the hosting machine: return new ChannelFactory<IReportsService>("").CreateChannel(new EndpointAddress(string.Format("net.tcp://{0}:9005/ReportsService", Server))); My client config file contains: <system.serviceModel> <bindings> <netTcpBinding> <binding name="customTcpBinding" maxReceivedMessageSize="2147483647"> <readerQuotas maxNameTableCharCount="2147483647" maxStringContentLength="2147483647"/> <security mode="None"/> </binding> </netTcpBinding> </bindings> <behaviors> <serviceBehaviors> <behavior name="ServiceBehavior"> <serviceMetadata httpGetEnabled="True"/> <serviceDebug includeExceptionDetailInFaults="True" /> <serviceThrottling maxConcurrentCalls="30" maxConcurrentInstances="30" maxConcurrentSessions="1000" /> </behavior> </serviceBehaviors> </behaviors> <services> <!-- Snipped other services to simplify for you. --> <service behaviorConfiguration="ServiceBehavior" name="WcfService.ReportsService"> <endpoint address="ReportsService" binding="netTcpBinding" bindingConfiguration="customTcpBinding" contract="ServiceContracts.IReportsService" /> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> <host> <baseAddresses> <add baseAddress="net.tcp://localhost:9005" /> </baseAddresses> </host> </service> <service behaviorConfiguration="ServiceBehavior" name="WcfService.UpdateData"> <endpoint address="UpdateData" binding="netTcpBinding" bindingConfiguration="customTcpBinding" contract="ServiceContracts.IUpdateData" /> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> <host> <baseAddresses> <add baseAddress="net.tcp://localhost:9006" /> </baseAddresses> </host> </service> </services> </system.serviceModel> I've tried to keep things simple with the code snippets above, but if you would like to see more just ask and I'd be happy to provide anything that'll help.

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  • profiling WCF services with visual studio profiler

    - by ashish.s
    I am trying to profile a WCF service using visual studio profiler. So i created a profile by choosing asp.net application, and gave it the url of the web service. When i launch the session, it launches a web page to the site. I then run my unit test using another visual studio client, but the test always fails with with communication exception, and the process that performance analyze is attached to exits out. if i run the test again, it attached the process again, but the tests still fails with communication exception. This is throwing my report off since its only accounting for the startup work that the application is supposed to do. can someone point out what i am doing wrong ?

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  • WCF REST vs. ADO.NET Data Services

    - by ray247
    Hi there, Could someone compare and contrast on WCF Rest services vs. ADO.NET Data Services? What is the difference and when to use which? Thanks, Ray. Edit: thanks to the first answer, just to give a bit background on what I'm looking to do: I have a web app I plan to put in the cloud (someday), the DAL is built with ADO.NET Entity Framework. And, I need to figure which web service data access technology would best fit my case.

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  • WCF Global(.asax) Behavior

    - by Theofanis Pantelides
    Hi, I want to create a global option that when a REST call contains &format=json to output the response as a JSON string. If I enter the following String in my method it works: WebOperationContext.Current.OutgoingResponse.Format = WebMessageFormat.Json; However, if I add this line, anywhere in my Global.asax file, I get a nullException for Current Context: String format = ""; if (HttpContext.Current.Request.QueryString["format"] != null) format = HttpContext.Current.Request.QueryString["format"]; if (String.Equals("json", format, StringComparison.OrdinalIgnoreCase)) System.ServiceModel.Web.WebOperationContext.Current.OutgoingResponse.Format = System.ServiceModel.Web.WebMessageFormat.Json; The exception is triggered here: System.ServiceModel.Web.WebOperationContext.Current Anyone know how I can add this functionality globally (WCF)?

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  • WCF binding programatically and adding metadata excange

    - by totem
    Hi, My problem is im trying to enable mex on a service that uses net.tcp binding. that binding is for localhost port 5000, when i want to enable mex on the same port, and have it avilable for http i have to enable the HttpGetEnabled on the Service host. All this works well but when i try to add the binding it fails becuase the binding is "net.tcp://localhost:5000/test". is there a way to enable mex on the same port but with a diffrent uri? Without enableing NetTcpPortSharing. I dont think the code is the issue since i can add the MEX on a diffrent port through the code an it works fine, the question is how to have net.tcp://localhost:5000/test as the WCF tcp based enpoint and net.tcp://localhost:5000/test/mex as the http mex endpoint that gives the WSDL for the TCP endpoint. thanks, Totem

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  • NHibernate WCF Rest IIS7 Fails with Security Exception

    - by RyanFetz
    Here is the error: System.TypeInitializationException: The type initializer for 'NHibernate.Cfg.Environment' threw an exception. --- System.Security.SecurityException: Request for ConfigurationPermission failed while attempting to access configuration section 'hibernate-configuration'. To allow all callers to access the data for this section, set section attribute 'requirePermission' equal 'false' in the configuration file where this section is declared. --- System.Security.SecurityException: Request for the permission of type 'System.Configuration.ConfigurationPermission, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Configuration.BaseConfigurationRecord.CheckPermissionAllowed(String configKey, Boolean requirePermission, Boolean isTrustedWithoutAptca) We have the trust level set to Full. Note also that we also have a web site that runs the SAME Nhibernate code and has NO issues. Only the WCF REst Web Service Application has this error? Any Thoughts as to WHY this is a problem?

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  • Simple Data Caching using Weak References in WCF

    - by Tawani
    Given that I have the following WCF service: class LookUpService { public List<County> GetCounties(string state) { var db = new LookUpRepository(); return db.GetCounties(state); } } class County { public string StateCode{get;set;} public string CountyName{get;set;} public int CountyCode{get;set;} } What will be the most efficient (or best) way to cache a state's counties using weak references (or any other approach) so that we don't hit the database every time we need to look up data. Note that we will not have access to the HttpRuntime (and HttpContext).

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  • Silverlight 4 - authentiation / authorization against custom wcf service

    - by Calanus
    I have a wcf service in front of an AzMan store that passes roles and operations to clients using the following interface: [OperationContract] bool AuthenticateUser(string password, string appName); [OperationContract] string[] GetRoles(string storelocation, string appName); [OperationContract] string[] GetOperations(string storeLocation, string appName, string selectedRole); Clients connect to this service using windows authentication (but users must send their password through to reaffirm their identity). Ultimately the service delivers an array of operations that each client can perform based on their selected role. I've opened a new Silverlight Business Application and tried to understand how authentication/authorization works in this template, as well as scoured the web to find examples to how to hook my webservice to the login box already created in the template, but I am completely at a loss as how to do this! Can anyone offer any advice?

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  • Figuring out the required MaxReceivedMessageSize in WCF with NetTcpBinding

    - by Flo
    I'm using NetTcpBinding in WCF and i want to send a Stream which does not exceed the size of 1 MB. I have set the MaxReceivedMessageSize to a really high number and that works fine of course. But I am curious: Does setting the MaxReceivedMessageSize to a very hight number have any (negative) impact or would it be useful to set it just above the size I actually want to send/receive? What kind of overhead can I expect when using the NetTcpBinding to transfer a stream? Meaning: when I send a stream of 1 MB, how large does my MaxReceivedMessageSize has to be?

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  • Modifying a column with the 'Identity' pattern is not supported in WCF RIA Services

    - by Banford
    I've been following the walkthrough for creating your first WCF RIA Services Application from Microsoft and have encountered a problem when trying to edit and update data using the SubmitChanges() method of the Data Context. The table being updated has an Identity Specification set in SQL Server 2008 on the 'CourseID' column. However the PRIMARY key is a composite of two other fields. When using SubmitChanges() the application locks up in the browser an presents an unhandled exception. By handling this exception I managed to get the message: Modifying a column with the 'Identity' pattern is not supported. This is referring to the 'CourseID' column. Turning identity specification off solves the problem, but I need the auto-incrementing ID. In what way isn't this supported. Or where am I going wrong?

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  • Sharing constants across a WCF service

    - by Sandor Davidhazi
    I have certain strings which contain special characters so they can not be shared as enum members across a WCF service. (Actually, they are keys for configuration values.) I want to be able to pass in the keys at client side and get back the config values. If there is a change, I only want to change the config keys at one place. Constants would be ideal, because they can be changed as strong references across the entire solution, and the underlaying value could be updated with a service reference update. Currently I can think of two possible solutions: Create a shared assembly and place the constants there Share the constants across the service. The problem is, I can't get the datacontractserializer to serialize the constants. Is that possible at all? Is the shared assembly the only option I have?

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  • Custom message headers in WCF on Mono

    - by TheNextman
    I'm making WCF calls from a Mono client running on Ubuntu (Mono 2.6). I can't seem to add a custom header to my messages. I have tried two different ways: Using a [MessageContract] and [MessageHeader] attributes on a custom class Adding the header to the outgoing messages programmatically, e.g. MessageHeader mhg = new MessageHeader("test"); MessageHeader untyped = mhg.GetUntypedHeader("token", "ns"); OperationContext.Current.OutgoingMessageHeaders.Add(untyped); The header is not there when the call reaches the server! It's always null. Note that both methods work fine running on .NET in Windows. Also note that the message body gets through just fine on Mono. I see some references online that suggest this should work: http://forums.monotouch.net/yaf_postsm1692.aspx https://bugzilla.novell.com/show_bug.cgi?id=551745 Also - the Mono status page shows that all the MessageHeader stuff is fully implemented... Anyone had luck with this? Thanks in advance, Richard

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  • Optional query string parameters in URITemplate in WCF?

    - by Shafique
    I'm developing some RESTful services in WCF 4.0. I've got a method as below: [OperationContract] [WebGet(UriTemplate = "Test?format=XML&records={records}", ResponseFormat=WebMessageFormat.Xml)] public string TestXml(string records) { return "Hello XML"; } So if i navigate my browser to http://localhost:8000/Service/Test?format=XML&records=10, then everything works as exepcted. HOWEVER, i want to be able to navigate to http://localhost:8000/Service/Test?format=XML and leave off the "&records=10" portion of the URL. But now, I get a service error since the URI doesn't match the expected URI template. So how do I implement defaults for some of my query string parameters? I want to default the "records" to 10 for instance if that part is left off the query string.

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  • Connecting to a WCF Service in PHP that has a a NetTCP Binding and a BasicHttpBinding

    - by Justin Dearing
    I have a WCF service. It has multiple clients and three endpoints. The endpoint bindings are nettcp, wsHttp and basicHttp. If I attempt to connect to it via php'd builtin SoapClient class like so: $service = new SoapClient ("http://service.companyname.local:6666/Service/?wsdl", array( "location" => "http://service.companyname.local:6666/Service/Basic", "trace" => true, 'soap_version' => SOAP_1_1 ) ); I get the following: PHP Fatal error: SOAP-ERROR: Parsing WSDL: PHP-SOAP doesn't support transport 'http://schemas.microsoft.com/soap/tcp' in c:\www\client.php on line 666 Right now my workaround is to save the wsdl manually and remove the nettcp binding. Is there a workaround that will allow me to use the automatically generated wsdl? Can I hide a binding from the wsdl in web.config? Can I generate different wsdls on different bindings. I don't want to deploy two service hosts.

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  • Host SilverLight / WCF

    - by martin
    Hi all I have created my first silverlight app :-) It has a basic page and connects to a db to populate a list. the connection is done using wcf, so my silverlight connects to a ServiceReference that does the stuff. This all works fine when i run from VisualStudio. My problem is that i am not sure how to host this app. I created an account on aspspider uploaded my default.html, zap file(which i renamed to zip), and Database. this work fine until it needs to connect to the db. What do i need to upload to get the database connection working ? Thanks :-) Martin

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  • WCF Certificate issue

    - by Morgeh
    I am developing a WCF service on my local computer using Visual Studios built in ASP.NET development sever and I'm having issues creating and using temporary Certificates. I have created a cert call TempCA and added it to the Trusted Root Certificate folder and I have created another called SignedByCA which has been added to the personal folder. The service config file has been set up to use SignedByCA but when I run the service I get the following error. The certificate 'CN=SignedByCA' must have a private key that is capable of key exchange. The process must have access rights for the private key. I have tried using WinHttpCertCfg.exe to give other users access to the key but I have since found out that WinHttpCertCfg.exe has be deprecated in windows Vista. Has anyone had this issue before in a similar circumstance??

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  • WCF Error - The operation has timed out

    - by Charlie.Barker
    We have created a WCF service hosted in a windows service that handles Authentication requests. The only behavior is : ServiceMetadataBehavior smb = new ServiceMetadataBehavior(); smb.HttpGetEnabled = true; selfHost.Description.Behaviors.Add(smb); Our clients are able to authenticate succesfully 10 times then we get the error The operation has timed out When we increase the MaxConcurrentSessions = 50 then our clients can authenticate 50 times before we see the error. Clearly sessions are not being closed after the authentication call is made can anyone tell why this might be happening?

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  • WCF Paged Results & Data Export

    - by Ben
    I've walked into a project that is using a WCF service for the data tier. Currently, when data is needed for a grid, all rows are returned and the results are bound to a grid and the dataset is stuffed into a session variable for paging/sorting/rebinding. We've already hit a max message size problem, so I'm thinking it's time to convert from fetch and cache to fetch only the current page. Face value this seems easy enough, but there's a small catch. The user is allowed to export the entire result set at any point. This means that for grid viewing purposes fetching the current page is fine, but when they want to do an export, I still need to make a call for all data. This puts me back into the max message size issue. What is the recommended approach for this type of setup? We are currently using the wsHttpBinding... Thanks for any assistance.

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  • WCF is throwing UnauthorizedAccessExceptyion after upgrade to .NET 4.0

    - by Andrey
    I have a pretty simple client-server ASP.NET app; communication is via WCF service. All worked perferctly inVS 2008, now I upgraded to VS2010 and every time the client code is trying to instantiate a channel to the server: new ChannelFactory<IMemberService>("Members.MemberService").CreateChannel(); it throws an UnauthorizedAccessException "Access denied". Were there any breaking changes in the new version, or do I need to add some configuration? I'm pretty stuck, any ideas would be highly appreciated! BTW, binding used is basicHttpBinding, i don't know if thats important here. Thank you, Andrey

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  • Silverlight -> WCF -> Database -> problem

    - by Billy
    Hi there, I have some silverlight code that calls a WCF service which then uses the Entity Framework to access the database and return records. Everything runs fine but ... when I replace the Entity Framework code with classic ADO.NET code I get an error: The remote server returned an error: NotFound When I call the ADO.NET code directly with a unit test it returns records fine so it's not a problem with the ADO.NEt code I used fiddler and it seems to say that the service cannot be found with a "500" error. i don't think it's anything to do with the service as the only thing I change is the technology to access the database. Anyone know what i'm missing here?

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