Несколько вещей:
Если вы хотите использовать SSL на локальном хосте, вам нужно будет использовать IIS Express 7.5 (или полный IIS, если вы работаете на сервере с dev - вряд ли).
Вам понадобится файл clientaccesspolicy.xml, хранящийся в корне веб-приложения:
<?xml version="1.0" encoding="utf-8"?>
<access-policy>
<cross-domain-access>
<policy>
<allow-from http-request-headers= "SOAPAction">
<domain uri="https://*"/>
</allow-from>
<grant-to>
<resource path="/" include-subpaths="true"/>
</grant-to>
</policy>
</cross-domain-access>
</access-policy>
Пример на стороне сервера Web.config:
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="SecureBasicHttpBinding">
<security mode="Transport">
<transport clientCredentialType="Certificate" />
</security>
</binding>
</basicHttpBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior name="SomeBehavior" >
<serviceMetadata httpsGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="true"/>
<useRequestHeadersForMetadataAddress>
<defaultPorts>
<add scheme="https" port="443" />
</defaultPorts>
</useRequestHeadersForMetadataAddress>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment>
<serviceActivations>
<add relativeAddress="SomeService.svc" service="MySilverlight.Web.SomeService"/>
</serviceActivations>
</serviceHostingEnvironment>
<services>
<service name="MySilverlight.Web.SomeService"
behaviorConfiguration="SomeBehavior">
<endpoint address="SomeService"
binding="basicHttpBinding"
bindingConfiguration="SecureBasicHttpBinding"
bindingNamespace="https://MySilverlight.Web.SomeService"
contract="MySilverlight.Web.ISomeService">
</endpoint>
<endpoint address="mex"
binding="mexHttpsBinding"
contract="IMetadataExchange" />
</service>
</services>
</system.serviceModel>
Пример на стороне клиента:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_ISomeService" maxBufferSize="2147483647"
maxReceivedMessageSize="2147483647">
<security mode="Transport" />
</binding>
</basicHttpBinding>
</bindings>
<client>
<endpoint address="https://localhost/SomeService.svc/SomeService"
binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_ISomeService"
contract="MySilverlight.Web.SomeServiceReference.ISomeService"
name="BasicHttpBinding_ISomeService" />
</client>
<extensions />
</system.serviceModel>
</configuration>
IIS 7.5 автоматически настроит ваш локальный сертификат.