# Revision history [back]

The RFC refers to streams as Connections. There is a window per Connection.

https://tools.ietf.org/html/rfc793

  Connections:

The reliability and flow control mechanisms described above require
that TCPs initialize and maintain certain status information for
each data stream.  The combination of this information, including
sockets, sequence numbers, and window sizes, is called a connection.
Each connection is uniquely specified by a pair of sockets
identifying its two sides.


  Managing the Window

The window sent in each segment indicates the range of sequence
numbers the sender of the window (the data receiver) is currently
prepared to accept.  There is an assumption that this is related to
the currently available data buffer space available for this
connection.