services.xml

<?xml version="1.0" ?>

<container xmlns="http://www.symfony-project.org/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.symfony-project.org/schema/dic/services http://www.symfony-project.org/schema/dic/services/services-1.0.xsd">

    <parameters>
        <parameter key="event_dispatcher.class">Symfony\Framework\EventDispatcher</parameter>
        <parameter key="http_kernel.class">Symfony\Component\HttpKernel\HttpKernel</parameter>
        <parameter key="request.class">Symfony\Component\HttpFoundation\Request</parameter>
        <parameter key="response.class">Symfony\Component\HttpFoundation\Response</parameter>
        <parameter key="error_handler.class">Symfony\Framework\Debug\ErrorHandler</parameter>
        <parameter key="error_handler.level">null</parameter>
    </parameters>

    <services>
        <service id="event_dispatcher" class="%event_dispatcher.class%">
            <call method="setContainer">
                <argument type="service" id="service_container" />
            </call>
        </service>

        <service id="error_handler" class="%error_handler.class%">
            <argument>%error_handler.level%</argument>
        </service>

        <service id="http_kernel" class="%http_kernel.class%">
            <argument type="service" id="event_dispatcher" />
            <argument type="service" id="controller_resolver" />
        </service>

        <service id="request" class="%request.class%">
            <call method="setSession">
                <argument type="service" id="session" on-invalid="ignore"></argument>
            </call>
        </service>

        <service id="response" class="%response.class%" shared="false" />
    </services>
</container>