<configuration>
    <system.runtime.remoting>
        <application>
            <service>
                <wellknown
                    mode="Singleton"
                    type="ChatCoordinator, ChatCoordinator"
                    objectUri="Chat"
                />
            </service>
            <channels>
                <channel
                    ref="http"
                    port="8080"
                />
            </channels>
        </application>
    </system.runtime.remoting>
</configuration>