On Thu, 2010-04-15 at 18:18 +0800, yueyue papa wrote: > send part (lwIP), ---> server is windows based. > > I find the lwIP only send 2 tcp segment and wait for ACK. I use > TCP_NODELAY.
OK, so it is probably congestion window limited. When a connection is first opened it will be in the "slow start" phase, and during this the congestion window will increase with each ACK received. You should find that it soon starts having more than 2 packets in flight at one time, unless you're also seeing loss in which case the congestion window will stay small. Kieran _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
