1// SPDX-License-Identifier: GPL-2.0 2// 3// Basic TFO server test 4// 5// Test zero-payload packet w/ valid TFO cookie - a TFO socket will 6// still be created and accepted but read() will not return until a 7// later pkt with 10 byte. 8 9`./defaults.sh` 10 11 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 12 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 13 +0 bind(3, ..., ...) = 0 14 +0 listen(3, 1) = 0 15 +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 16 17 +0 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,FO TFO_COOKIE,nop,nop> 18 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK> 19 +0 accept(3, ..., ...) = 4 20 +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }% 21 22// A TFO socket is created and is writable. 23 +0 write(4, ..., 100) = 100 24 +0 > P. 1:101(100) ack 1 25 +0...0.300 read(4, ..., 512) = 10 26 +.3 < P. 1:11(10) ack 1 win 5840 27