Cannot obtain metadata from https://domain/mypage.svc WCF

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IIS

WCF

I have WCF which is hosted in local server. The url in local server is http://local/mypage.svc. The client will call my service via F5 using this url "https://domain/mypage.svc". now the client got the error "

cannot obtain metadata from https://domain/mypage.svc WCF

". I have added in my config.

What I have tried:

<behaviors>   
 <serviceBehaviors>       
<behavior name="metadataBehavior">          <serviceMetadata httpGetEnabled="true" />       </behavior>    
</serviceBehaviors> 
</behaviors>