This API is available on Firefox OS for privileged or certified applications only.
Summary
The bufferedAmount represents the number of bytes which have previously been buffered by calls to the send() method on this socket.
Syntax
var size = instanceOfTCPSocket.bufferedAmount;
Value
A number
Specification
Not part of any specification yet; however, this API is discussed at W3C as part of the System Applications Working Group under the Raw Sockets proposal.