Automatic browser refresh on file change or update is what you can call it. NodeJuice is a set of tools which allows you to develop with a push connection to your web browser. JavaScript V8 Seeker Server and Web Server Gateway Interface. nodeJuice Seeker Server works with all other servers including Apache, Passenger, Nginx, Cherokee, and more. A web server isn't required, NodeJuice comes with one in case you forgot yours. It runs on NodeJS; a low level non-blocking network ready process with many capabilities. This is a tool that every web developer needs and has wanted for a very long time. IRC @ #node.js
I use "multi byte character (encoding: utf-8)", such as Japanese Language.
"body.length" returns the number of characters in a string.
so I think that is invalid content-length because string is multi byte character.
"Buffer.byteLength" returns the actual byte length of a string.