Silverlight应用程序无法访问其他计算机上的WCF服务 [英] Silverlight application cannot access WCF services on other machines

问题描述

我有一个Silverlight应用程序，该应用程序运行良好，可以访问Silverlight应用程序本身中托管的WCF服务。它使用的端口是1794。

I have a silverlight application which works perfectly and can access the WCF services which are hosted in silverlight application itself. The port it is using is 1794.

当我部署到其他服务器（开发，测试或登台）时，应用程序无法访问WCF服务。

When I deploy to other servers (dev or test or staging), the application is not able to access WCF services.

这是我的ServiceReference.ClientConfig的一个片段，

This is a snippet from my ServiceReference.ClientConfig looks like

<endpoint address="http://localhost:1794/MyWebService.svc"
                binding="customBinding" bindingConfiguration="CustomBinding_MyWebService"
                contract="ConfigMgmtServiceReference.MyWebService"
                name="CustomBinding_MyWebService" />

我的根文件夹也包含clientaccesspolicy.xml文件。

My root folder contains the clientaccesspolicy.xml file too.

如何解决这个问题？

推荐答案

我怀疑 localhost：1794 会引起问题-当Silverlight应用程序在客户端计算机上执行时，本地主机不会将其返回给服务器。

I suspect the localhost:1794 would be causing the issue - when the silverlight application executes on a client machine the localhost will not get it back to the server.

该技术我用来消除此类问题的方法是，以编程方式在运行时设置终点。我需要的两条信息是服务的Web项目在我的Web项目中的位置（这是提前知道的），以及从中提供了Silverlight应用程序的地址（域）（我可以找到）。

The technique i use to eliminate issues like this is to programmatically set the end points at run time. The two pieces of info i need are the location within my web project of the service (which is known ahead of time), and the address (domain) that the silverlight app has been served from (which i can find out).

    private void initEndpoint(ServiceEndpoint endPoint, string serviceName)
    {
        Uri hostUri = Application.Current.Host.Source;
        string wcfBaseUri = string.Format("{0}://{1}:{2}/WebServices/", hostUri.Scheme, hostUri.Host, hostUri.Port);

        endPoint.Address = new EndpointAddress(new Uri(wcfBaseUri + serviceName));
    }

在这段代码中，文件夹 / WebServices 是我的Web服务位于我的Web应用程序中的位置。然后，我这样调用该函数：

In this piece of code, the folder /WebServices is where my web services are located within my web app. I then call the function like this:

        LoggingServiceClient loggingService = new LoggingServiceClient();
        initEndpoint(loggingService.Endpoint, "LoggingService.svc");

我的实际设置比这稍微复杂一些，因为我也希望能够覆盖它，并且手动配置终点，但是您已经明白了。通过这样做，我已经能够部署到各种设置，并且Web服务器在奇数端口上运行，并且silverlight-> webservice位每次都可以使用。

my actual setup is slightly more complex than that, because i also want to be able to override that and manually configure the end points, but you get the point. By doing this, i have been able to deploy to all sorts of setups, with webservers running on odd ports, and the silverlight->webservice bit just works every time.

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