IIS Server: Bad Gateway

<?xml version="1.0" encoding="UTF-8"?>  
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="Redirect to HTTPS" stopProcessing="true">  
                    <match url="(.*)" />  
                    <action type="Rewrite" url="https://127.0.0.1:8000 {R:1}" logRewrittenUrl="true" />  
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>

<?xml version="1.0" encoding="UTF-8"?>  
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="seafhttp" stopProcessing="true">  
                    <match url="seafhttp/(.*)" />  
                    <action type="Rewrite" url="https://127.0.0.1/{R:1}" logRewrittenUrl="true" />  
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>