What is node.js excatly?
i am new to web sockets and node .. I am confused  with different terminologies used with node.js. Few places it's mentioned it's a tool, few others it's a JavaScript program / any platform or some times it's an sdk at server side. Please tell me what exactly is this ode.js?

How do i write program using websockets.io in windows machine (server-side) for a client app written using web sockets. Or is there any better implementation than websockets.io for producing a faster response.. or high speed?

What is node.js excatly?
===

i am new to web sockets and node .. I am confused  with different terminologies used with node.js. Few places it's mentioned it's a tool, few others it's a JavaScript program / any platform or some times it's an sdk at server side. Please tell me what exactly is this ode.js?

How do i write program using websockets.io in windows machine (server-side) for a client app written using web sockets. Or is there any better implementation than websockets.io for producing a faster response.. or high speed?
