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// SPDX-License-Identifier: GPL-2.0
//
// Send a FIN pkt with the ACK bit to a TFO socket.
// The socket will go to TCP_CLOSE_WAIT state and data can be
// read until the socket is closed, at which time a FIN will be sent.
`./defaults.sh`
0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0
+0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0
+0 < S 0:10(10) win 32792 <mss 1460,sackOK,nop,nop,FO TFO_COOKIE,nop,nop>
+0 > S. 0:0(0) ack 11 <mss 1460,nop,nop,sackOK>
// FIN is acked and the socket goes to TCP_CLOSE_WAIT state
// in tcp_fin() called from tcp_data_queue().
+0 < F. 11:11(0) ack 1 win 32792
+0 > . 1:1(0) ack 12
+0 accept(3, ..., ...) = 4
+0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }%
+0 %{ assert tcpi_state == TCP_CLOSE_WAIT, tcpi_state }%
+0 read(4, ..., 512) = 10
+0 close(4) = 0
+0 > F. 1:1(0) ack 12
* > F. 1:1(0) ack 12
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