Plack::Middleware::ContentLength - Adds Content-Length header automatically
# in app.psgi
builder {
enable "Plack::Middleware::ContentLength";
$app;
}
# Or in Plack::Handler::*
$app = Plack::Middleware::ContentLength->wrap($app);
Plack::Middleware::ContentLength is a middleware that automatically adds
"Content-Length" header when it's
appropriate i.e. the response has a content body with calculable size (array
of chunks or a real filehandle).
This middleware can also be used as a library from PSGI server
implementations to automatically set
"Content-Length" rather than in the end
user level.