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authorJianfeng Tan <henry.tjf@antfin.com>2019-11-18 06:59:50 +0000
committerJianfeng Tan <henry.tjf@antfin.com>2020-03-05 01:31:33 +0800
commit78c896b3b3127515478090c19447e27dc406427e (patch)
treed6d67d4683e9ca0409f9984a834547a572fb5310 /test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt
parente4380f4866091fd92a7a57667dd938a99144f9cd (diff)
Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com> Signed-off-by: Jielong Zhou <jielong.zjl@antfin.com> Signed-off-by: Jian Zhang <wuzai.zj@antfin.com> Signed-off-by: Chen Zhao <winters.zc@antfin.com> Change-Id: I55c39de4c6cd30f991f35631eb507f770230f08e
Diffstat (limited to 'test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt')
-rw-r--r--test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt20
1 files changed, 20 insertions, 0 deletions
diff --git a/test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt b/test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt
new file mode 100644
index 0000000..65f3733
--- /dev/null
+++ b/test/packetdrill/tests/linux/listen/listen-incoming-ack.pkt
@@ -0,0 +1,20 @@
+// Test behavior when a listener gets an incoming packet that has
+// the ACK bit set but not the SYN bit set.
+
+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 < . 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
+0.100 > R 0:0(0) win 0
+
+// Now make sure that when a valid SYN arrives shortly thereafter
+// (with the same address 4-tuple) we can still successfully establish
+// a connection.
+
+0.200 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>
+0.200 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6>
+
+0.300 < . 1:1(0) ack 1 win 320
+0.300 accept(3, ..., ...) = 4