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4/8/2010
Silly Window Syndrome is described in RFC 1122 as follows:
In brief, SWS is caused by the receiver advancing the right window edge whenever it has any new buffer space available to receive data and by the sender using any incremental window, no matter how small, to send more data [TCP:5]. The result can be a stable pattern of sending tiny data segments, even though both sender and receiver have a large total buffer space for the connection.
Windows Embedded CE TCP/IP implements SWS avoidance as specified in RFC 1122 by not sending more data until there is a sufficient window size advertised by the receiving end to send a full TCP segment. It also implements SWS on the receive end of a connection by not opening the receive window in increments of less than a TCP segment.