Winsock MTU values

For the best performance of Trumpet winsock, please set the MTU, MSS and RWIN values accordingly:

The formulas used to calculate these numbers are as follows:

Definition of terms:

Term	Definition
MTU	Maximum Transfer Unit The maximum number of bytes that can be sent in a single packet
MSS	Maximum Segment Size The maximum number of user data bytes that can be included in the packet without fragmentation. This is 40 less than the MTU because the IP header occupies these 40 bytes.
RWIN	Receive WINdow The maximum number of bytes that can be received before an acknowledgement is required. By setting a very large RWIN, performance is increased because one acknowledgement packet can acknowledge multiple received packets, however if one packet is in error (i.e. data overrun) then the entire RWIN block must be restransmitted, thus degrading performance.