bool isLocked(Request $request)

addSurrogateControl(Response $response)

update(Response $response)

interface SurrogateInterface Methods string

string getName() Returns surrogate name.

string renderIncludeTag(string $uri, string $alt = null, bool $ignoreErrors = true, string $comment = '')

class Ssi implements

addSurrogateCapability(Request $request)

terminate(Request $request,

addSurrogateCapability(Request $request)