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This test makes sure we do send a FIN on close() if the receive queue contains data that was consumed. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Link: https://patch.msgid.link/20250903084720.1168904-3-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
33 lines
819 B
Plaintext
33 lines
819 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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--mss=1000
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`./defaults.sh`
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// Initialize connection
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0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
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+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
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+0 bind(3, ..., ...) = 0
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+0 listen(3, 1) = 0
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+0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop>
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+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK>
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+.1 < . 1:1(0) ack 1 win 32792
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+0 accept(3, ..., ...) = 4
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+0 < . 1:1001(1000) ack 1 win 32792
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+0 > . 1:1(0) ack 1001
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+0 read(4, ..., 1000) = 1000
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// resend the payload + a FIN
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+0 < F. 1:1001(1000) ack 1 win 32792
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// Why do we have a delay and no dsack ?
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+0~+.04 > . 1:1(0) ack 1002
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+0 close(4) = 0
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// According to RFC 2525, section 2.17
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// we should _not_ send an RST here, because there was no data to consume.
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+0 > F. 1:1(0) ack 1002
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