Error CORS appear when other domain request to wcf Restful. Here my App.config in window services. I just follow some code create wcf resful host in window service in this link
https://www.codeproject.com/Tips/1009004/WCF-RESTful-on-Windows-Service-Host?msg=5941830#xx5941830xx
App.config code :-
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
</startup>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="RestWCFServiceLibrary.Service1Behavior">
<serviceMetadata httpGetEnabled="True"/>
<serviceDebug includeExceptionDetailInFaults="False" />
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp />
</behavior>
</endpointBehaviors>
</behaviors>
<services>
<service behaviorConfiguration="RestWCFServiceLibrary.Service1Behavior"
name="RestWCFServiceLibrary.RestWCFServiceLibrary">
<endpoint address=""
binding="webHttpBinding"
contract="RestWCFServiceLibrary.IRestWCFServiceLibrary"
behaviorConfiguration="web">
</endpoint>
<endpoint address="mex"
binding="mexHttpBinding"
contract="IMetadataExchange" />
<host>
<baseAddresses>
<add baseAddress="http://localhost:8888/RestWCFServiceLibrary/" />
</baseAddresses>
</host>
</service>
</services>
<protocolMapping>
<add binding="basicHttpsBinding" scheme="https" />
</protocolMapping>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
</customHeaders>
</httpProtocol>
<modules runAllManagedModulesForAllRequests="true"/>
<directoryBrowse enabled="true"/>
</system.webServer>
</configuration>
but still fail to solve error CORS. Any idea to help me?
Access to fetch at 'http://localhost:8888/RestWCFServiceLibrary/json' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
