diff options
Diffstat (limited to 'test/packetdrill/tests/linux/init_rto/init_rto_passive_open.pkt')
| -rw-r--r-- | test/packetdrill/tests/linux/init_rto/init_rto_passive_open.pkt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/packetdrill/tests/linux/init_rto/init_rto_passive_open.pkt b/test/packetdrill/tests/linux/init_rto/init_rto_passive_open.pkt new file mode 100644 index 0000000..8775c3c --- /dev/null +++ b/test/packetdrill/tests/linux/init_rto/init_rto_passive_open.pkt @@ -0,0 +1,17 @@ +// A simple test of initRTO (sysctl_tcp_synack_rto, default to 1sec) for +// the passive open side. + +// We want the SYN-ACK to be retransmitted 1 sec after the SYN, but +// usually it happens at 1.2 or 1.4 sec due to the fact that the +// kernel only schedules SYN-ACK retransmissions periodically. +// Specifically, the TCP_SYNQ_INTERVAL (period of the SYN-ACK timer) is 200ms. +--tolerance_usecs=405000 + +// Create a listener socket. +0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0.000 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0.000 bind(3, ..., ...) = 0 +0.000 listen(3, 1) = 0 +0.100 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7> +0.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> +1.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6> |