WCF service on IIS - WSDL is empty - web-services

Question

I created a WCF service and hosted it on my IIS server. Then, I needed to edit the schemaLocation. I followed this post.
When I add "?wsdl" to the url, I get an empty page. If I try to use the WSDL from SOAPui to test it, I get this "Error loading [http://xx.xxx.xx.xx:8095/CardServiceLib.CardService.svc/service?wsdl]: org.apache.xmlbeans.XmlException: org.apache.xmlbeans.XmlException: error: Unexpected end of file after nul"
If I delete the HTTPGetUrl, the WSDL is correct but the schemaLocation isn't what I want. With the mod I made with the linked post, the schemaLocation is perfect but the WSDL is empty... why?
This works, but not as I want (generates WSDL but with wrong links):
<serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" />
and this not (doesn't generate WSDL --> blank page!!!):
<serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" httpGetUrl="http://xx.xx.xx.xx.:8095/MyService.svc/endpoint"/>
This is my web.config on IIS server 7
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<connectionStrings>
<add name="connectionString" connectionString="server=xxxxx;database=xxxxx;uid=xxxxx;pwd=xxxxx;" providerName="System.Data.SqlClient" />
</connectionStrings>
<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
<add key="userName" value="admin" />
<add key="password" value="xxxxx" />
<add key="ClientSettingsProvider.ServiceUri" value="" />
<add key="SecurityKey" value="xxxxxxxxxx" />
</appSettings>
<system.web>
<compilation debug="true" />
<membership defaultProvider="ClientAuthenticationMembershipProvider">
<providers>
<add name="ClientAuthenticationMembershipProvider" type="System.Web.ClientServices.Providers.ClientFormsAuthenticationMembershipProvider, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" serviceUri="" />
</providers>
</membership>
<!--<roleManager defaultProvider="ClientRoleProvider" enabled="true">
<providers>
<add name="ClientRoleProvider" type="System.Web.ClientServices.Providers.ClientRoleProvider, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" serviceUri="" cacheTimeout="86400" />
</providers>
</roleManager>-->
</system.web>
<system.serviceModel>
<standardEndpoints>
<webHttpEndpoint>
<!-- the "" standard endpoint is used for auto creating a web endpoint. -->
<standardEndpoint name="" helpEnabled="true" automaticFormatSelectionEnabled="true" />
</webHttpEndpoint>
</standardEndpoints>
<bindings>
<basicHttpBinding>
<binding name="SecurityByTransport" maxBufferPoolSize="2147483647" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" messageEncoding="Text">
<readerQuotas maxDepth="2000000" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" />
<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic" />
<!--<message clientCredentialType="UserName"/>-->
</security>
</binding>
</basicHttpBinding>
</bindings>
<services>
<service name="CardServiceLib.CardService" behaviorConfiguration="customBehavior">
<endpoint address="" binding="basicHttpBinding" bindingConfiguration="SecurityByTransport" name="base" contract="CardServiceLib.ICardService">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" name="mex" contract="IMetadataExchange" />
<!--<endpoint address="web" behaviorConfiguration="webHttp" binding="webHttpBinding"
bindingConfiguration="" name="web" contract="calc.ICalcService">
<identity>
<dns value="localhost" />httpGetUrl="http://77.108.40.77:8095/CardServiceLib.CardService.svc/service"
</identity>
</endpoint>-->
<host>
<baseAddresses>
<add baseAddress="https://xx.xx.xx.xx:8095/MyService/" />
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<endpointBehaviors>
<behavior name="webHttp">
<webHttp />
</behavior>
</endpointBehaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" />
<serviceDebug includeExceptionDetailInFaults="False" />
</behavior>
<behavior name="customBehavior">
<serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" httpGetUrl="http://xx.xx.xx.xx:8095/MyService.Service.svc/service"/>
<serviceDebug includeExceptionDetailInFaults="True" />
<serviceCredentials>
<userNameAuthentication userNamePasswordValidationMode="Custom" customUserNamePasswordValidatorType="xx,xx" />
</serviceCredentials>
</behavior>
</serviceBehaviors>
</behaviors>
<!--<protocolMapping>
<add binding="webHttpBinding" scheme="http" />
</protocolMapping>-->
</system.serviceModel>
<system.webServer>
<directoryBrowse enabled="false" />
</system.webServer>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /> </startup></configuration>
SOLVED!! I added this
address="http://192.168.1.2/Demo.Service/MultiEndPointsService.svc/basic"
in my endpoint tag, like written in this link.

Answer 1

I suspect the issue is related to the authentication required to access the WSDL.
When attempting to access the metadata URL directly, the web site indicates the following:
“Authentication Required”
“The server http://...:8095 requires a username and password.”
You either need to provide the proper credentials or relax the permissions on the WSDL.