WCF / ASMX :: Consuming A XML Web Service Slow On First Request?
Jun 13, 2010
for the past couple of days i am facing an issue where the first call from my ASP.NET 4 application (VS 2010 Web Site) hosted in IIS 7 to an XML web service is dead-slow. subsequent calls are fast until the AppDomain is restarted.
I have tried all solutions related to pre-generating the serializer assembly but nothing worked. Anyway THEN I was sure it is an IIS-only issue because if i consume the xml web service from a console .net application then all the calls are fast. its even fast from an ASP.NET web site NOT hosted in IIS instead running on the development server. SO clearly the problem is there only when my app is hosted in IIS.
I have a WCF REST service built with C# and it returns an image as part of a CPU intensive operation. The client is running on Android (Java) By default, it will return a text JSON object that looks something like this:
{"d",[9,0,77,12,11,...]}
Those are they bytes of the image. Fine. However, all the solutions for decoding this JSON are intolerably slow. I've tried Gson, Jackson, and the built-in Android JSONObject class. I have no idea why they are so slow.
As an alternative solution, I have my REST service return a GUID, and then that GUID can be used by the Android client to go to a regular URL that serves up the image as a regular binary stream, via an MVC controller.
This works well, and it fast, and is pretty easy to handle on the Android side. However, it does feel like a bit of kludge and kind of a violation of the REST design principles. Am I missing something here? Is there a better way to do this?
I'm taking over a project for a former co-worker. We're consuming a web service which requires authentication. The former co-worker was unable to call the service using WCF. I'm mostly unfamiliar with web services but was also unable to get it to authenticate.Upon speaking w/ the original developer, I was told that I'd have to build a project in VS 2005 in order to consume the service and that WSE 3 would have to be used, instead of WCF. He has some code that did indeed build and run on his PC, while he was here. I'm now unable to get it to build.
I'm running VS 2005 on XP and have WSE 3.0 installed and enabled on the project, which is a C# class library. I successfully made a Web Reference to the service and generated a proxy. In trying to test it, the first few lines of my code look like this:
[Code]....
...problem is, it says that the proxy that was generated does not have RequestSoapContext!
I am trying to create a wrapper class for the MusicBrainz CD database using VB.NET. I have a test URL that produces an XML response:[URL]I need to get that response into an XMLDocument object in .NET. I have tried XMLDocument.Load, WebClient.DownloadString, and HttpWebRequest through a StreamReader. All produce: Unable to Connect To Remote Server. It is possible that my company firewall is the problem but I can access the URL just fine in a web browser.
Here's a simple question that Google isn't providing any good leads on:How I do consume this in VS 2008 or 2010?[URL]I have no control over it, I just have to consume it and use it. Adding it as a web reference in the project yields this error:[URL]was not recognized as a known document type.The error message from each known type may help you fix the problem:- Report from 'XML Schema' is 'The root element of a W3C XML Schema should be <schema> and its namespac"
I'm working with an outside company to impletement their API into our program. Most of their member functions working pretty solid. I get to the one function where I have to pass an associated array to it and this is where it blows up. I create a hash table or namevaluecollection and of course I will get the error(The type System.Collections.Hashtable is not supported because it implements IDictionary.), which can't be serialized.
Is there an easy way to pass this associated array to them? I don't think their api is very flexible, but they seem to think so.
I need to access a web service. The WSDL is not available, even if I know everything about the service (url, method name and signature). I guess I could use HTTPRequest and HTTPResponse classes:HTTPResponse: should contains the XML Soap Response that I eventually parse.HTTPRequest: how to specify the service's and the method's parameters?
I've created a class library, now I'm trying to use it in a webservice.If I try and use it via a web method like this:
<WebMethod()> _Public Function GetStaffList() As List(Of ClassLibrary.Staff) End Function
I get this error:You must implement a default accessor on System.Security.Policy.Evidence because it inherits from ICollection. And I can't seem to find any coherent instructions on remedying this issue.If I copy the Staff class into the web service (app_code) it works hunky dory, so it must be security..I can't be the only one attempting this! MSDN doesn't explain this one too well :(
I have created a webservice which is publicly exposed. This publicly created webservice can be consumed in the application But my requirement is I have to create a webservice to expose the schema and cannot be consumed directly.How to consume the web service which is not exposed directly.
I have consumed an external webservice in my client application using WCF. And every thing works great in my Dev box(XP with IIS5.1)But when the same application is moved to Prod server(Win Server 2003 with IIS6.0) it fails. Below is the exception caught:
There was no endpoint listening at http://MyExternalWebServiceUrlWithSessionId could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.And the InnerException is: Unable to connect to the remote server.My Config file has the below settings:
I am consuming the java web service in .net client, when i sent a request to that web service, i am getting one exception in response object.It says "Client found response content type of 'text/plain', but expected 'text/xml'", along with this message i am getting the response in that exception.
I'm fairly new to .NET development so I might be missing something very simple here. I'm trying to set up a web service as a data item so that I can bind it to a control on my page. I was reading some tutorials about doing this in an earlier version which seemed very simple. All you had to do was add the web reference, create a data source and use the object type, pick the web service and enter the name of the call that would retrieve the data.
In 2008 the object data source type doesn't seem to be available anymore when creating a new item unde app_data. I get options for SQL Server, XML and XML schema. I've tried adding an existing source and picking each of the files generated for my web service reference, with no success. I suspect that I have to use one of the XML options, though at this point my web service is a simple thing that only returns some strings for prototyping purposes (I'm not the one writing the web service, just the front ends. Our other developer hasn't come up with a stub service yet). I know there must be some way to set a web service up as a business object so that you can bind it to a control like a gridview.
For example, we are going to consume web method GetEmployeeByQuery(ConnInfoXML, Query, RecordDetail), ConnInfoXML is login information in XML, Query is a SQL statement selecting records, RecordDetail is all records retrieved. All data are in XML format.
So how to write these parameters in XML to consume this web method and get all the information in XML, and then transfer XML to normal string format ?
Most WCF web service I have developed were consumed in a server side code (by adding a service reference in visual studio or creating a proxy class using svcutil.exe. I have never consumed a web service in a client code. So I apologize if I am using wrong terminology or my question does not make sense.We have a browser add-on or plugin that connect to a device on client computer (think of it as active-x control for internet explorer) inside a asp.net web page.This browser plugin/add-on then will be sending measurement data to the web server. After some research it appears to me that I can do eithera) Develop an AJAX enabled WCF web service and use script manager and javascript to consume it inside the web page that interact with browser pluginb) Develop a WCF web servcice (not sure about AJAX enable) that serialize request and response to JSON, and use JQuery inside asp.net page to consume it.QuestionWhat's difference between approach a) and b)? Which is better in particular scenario I have described.
I have a webservice which works 100% fine on my developer machine. Where Web Service is installed on LOCALHOST on my developer machine,Then i went to my servers, I installed webservice on one server and map it with the server where the website is hosted, Then i tried accessing this service using BROWSER from my web server, it worked fine, That means the mapping was done perfect.Then i run my program on web server (website). It worked fine on page1, then on page2, but when i did the same and call same function on page3, It popped me any error of
I am trying to consume a webservice. I added the web reference. But when i try to access the method, I am getting the error as:"The request failed with HTTP status 401: Unauthorized."The web service has username as "user1", password as "pass".I tried this:
Service1.TestPrcsService serv = new Service1.TestPrcsService(); serv.PreAuthenticate = true; serv.Custom_methodname(true);
How to pass the username and password to access the method?
A customer reported that our asmx web service is continually increasing in memory (mem usage as well as private bytes). We are able to reproduce the problem in our lab with Windows 2003 Server SP2 (fully patched) on some of the machines. The customer is using Windows 2008.
We created a Hello World web service targeting the 2.0 framework built under VS2005 SP1 and a test client that continues to call it. The memory increases steadily - approximately 40K per client request. If the test app is paused, the memory remains the same. When it is closed, the memory drops. Explicit calling of GC.Collect does not drop the memory.
We have run the memory profiler on the service and the leak is all native memory. We have uninstalled/re-installed the Framework on one of the machines but no difference. To our knowledge all of the security and IIS settings are not modified. We have compared app pool, default web site and virtual directory properties to machines that have no problem and they are identical.
I have hosted a service in the IIS server, while consuming the service i am getting some error. I have mentioned the error code below.
Error code:
Server Error in '/' Application.
The type 'EchoTunnelService.EchoService', provided as the Service attribute value in the ServiceHost directive could not be found.
Description:An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: The type 'EchoTunnelService.EchoService', provided as the Service attribute value in the ServiceHost directive could not be found.
Source Error: [Code]....
Version Information: Microsoft .NET Framework Version:2.0.50727.3607; ASP.NET Version:2.0.50727.3614
Calculator CALC = new Calculator(); int a = CALC.Add("23","27"); and result will be stored in a;
Please help me to encrypt this request using the X509 certificate. Am having a certificate with public key and with subject "My Calculator"and also decrypt the result with the private key "abcdef" and with subject "My Response"
I've got a web service on a server with valid IP and valid DNS entries. I'm using an asynchronous thread in a WPF .NET application to access methods from that web service. Under normal connection conditions, for almost all users, the connection and method works fine. Under a very specific condition - Verizon Aircard being used to connect, no VPN connection to the company through SSTP, on a PC with Forefront Client Security installed - the web service will return a "HTTP Error 400: Bad Request" error to the user. If the same user on the same PC connect their VPN connection, the method works flawlessly.
I am trying to call webservice from my web application. The web application had integrated windows authentication. I've written custome principal class to do authorization. But when I give call to my web service with default credentials it gives me 'the request failed with http status 401 unauthorized.' error.
When I give call to my local webservice it is running fine (It also has integrated windows authentication) But when I add reference of same web service from QA server I am getting this error. Not sure what is happening. I also tried
