WifiLamp

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Revision as of 23:29, 3 November 2019 by Bertrik Sikken (talk | contribs) (Intro)
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Project WifiLamp
Wifilamp.jpg
Investigating my Action WiFi enabled LED lamp
Status Initializing
Contact bertrik
Last Update 2019-11-03

Intro

This page is about a WiFi enabled LED lamp from the Action store, with E27 form factor. The associated Android app refers to this lamp as A60 RGB-CCT.

I hoped this would be an ESP8266 based lamp, so it can possibly be flashed with my StofAnanas/stoflama firmware so it can indicate local air quality (PM10).

More info:

Hardware info

The lamp communicates over 2.4 GHz WiFi.

It has two setup modes, triggered by switching it off-and-on three times quickly in a row

  • fast blink mode: about 1 blink per second
  • slow blink mode: about 1 blink per 3 seconds

The manufacturer part of the MAC address (68:57:2d:1a:6a:ea) points to "HANGZHOU AIXIANGJI TECHNOLOGY CO., LTD", see https://www.cleancss.com/mac-lookup/68-57-2D

It received ip address 192.168.1.240 through DHCP from an OpenWRT router.

Protocol

broadcast message

I sniffed the protocol using TCP dump.

Changing the state of the lamp by the app causes a message to be sent to ec2-3-121-210-75.eu-central-1.compute.amazonaws.com.8886

The local protocol appears to use UDP. There is an UDP broadcast message sent by the lamp consisting of 172 bytes.

Capture

Broadcast

In OFF mode, it sends:

21:17:39.434577 IP 192.168.1.240.49153 > 255.255.255.255.6667: UDP, length 172
	0x0000:  4500 00c8 0609 0000 ff11 f283 c0a8 01f0  E...............
	0x0010:  ffff ffff c001 1a0b 00b4 f1e8 0000 55aa  ..............U.
	0x0020:  0000 0000 0000 0013 0000 009c 0000 0000  ................
	0x0030:  d097 6667 6f33 69eb 10b5 e9f1 32fd 802a  ..fgo3i.....2..*
	0x0040:  748d b61a 5e0b 3034 aff7 9af9 cddc f214  t...^.04........
	0x0050:  4ef9 12df 8046 2fa3 7469 859b 52d0 97eb  N....F/.ti..R...
	0x0060:  35d6 9379 4bc7 a48f 53c5 29be 7e05 2782  5..yK...S.).~.'.
	0x0070:  7256 f992 ef0b b3c9 946f 6ca8 e2e1 4853  rV.......ol...HS
	0x0080:  2e0d bc9a 92c3 3172 86eb f238 be57 9786  ......1r...8.W..
	0x0090:  a9e3 b2e7 b4bb 197b 7ef4 b0f2 267e 06c8  .......{~...&~..
	0x00a0:  5594 f0a3 1645 4ac1 6035 27f9 845c 201b  U....EJ.`5'..\..
	0x00b0:  7a23 e3b2 249f 5adf 48a7 14f8 51aa f439  z#..$.Z.H...Q..9
	0x00c0:  e9a5 9add 0000 aa55                      .......U

In ON mode, it sends:

21:17:59.439649 IP 192.168.1.240.49153 > 255.255.255.255.6667: UDP, length 172
	0x0000:  4500 00c8 060f 0000 ff11 f27d c0a8 01f0  E..........}....
	0x0010:  ffff ffff c001 1a0b 00b4 f1e8 0000 55aa  ..............U.
	0x0020:  0000 0000 0000 0013 0000 009c 0000 0000  ................
	0x0030:  d097 6667 6f33 69eb 10b5 e9f1 32fd 802a  ..fgo3i.....2..*
	0x0040:  748d b61a 5e0b 3034 aff7 9af9 cddc f214  t...^.04........
	0x0050:  4ef9 12df 8046 2fa3 7469 859b 52d0 97eb  N....F/.ti..R...
	0x0060:  35d6 9379 4bc7 a48f 53c5 29be 7e05 2782  5..yK...S.).~.'.
	0x0070:  7256 f992 ef0b b3c9 946f 6ca8 e2e1 4853  rV.......ol...HS
	0x0080:  2e0d bc9a 92c3 3172 86eb f238 be57 9786  ......1r...8.W..
	0x0090:  a9e3 b2e7 b4bb 197b 7ef4 b0f2 267e 06c8  .......{~...&~..
	0x00a0:  5594 f0a3 1645 4ac1 6035 27f9 845c 201b  U....EJ.`5'..\..
	0x00b0:  7a23 e3b2 249f 5adf 48a7 14f8 51aa f439  z#..$.Z.H...Q..9
	0x00c0:  e9a5 9add 0000 aa55

Turn ON

Turn ON the lamp: (captured with tcpdump -i wlan0 src 192.168.1.240 -X)

20:40:56.712025 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [P.], seq 137:208, ack 173, win 65535, length 71
	0x0000:  4500 006f 9522 4000 4006 2074 c0a8 01b2  E..o."@.@..t....
	0x0010:  c0a8 01f0 a23a 1a0c fa68 52cc 0000 948d  .....:...hR.....
	0x0020:  5018 ffff e352 0000 0000 55aa 0000 0002  P....R....U.....
	0x0030:  0000 000d 0000 0037 332e 3300 0000 0000  .......73.3.....
	0x0040:  0000 0700 0920 d832 0d91 0fb0 41e1 240d  .......2....A.$.
	0x0050:  c133 b03e c6da 47a5 9b4f bcd1 e4b9 8a03  .3.>..G..O......
	0x0060:  dee7 2c3f cc02 5a2b 04c4 af00 00aa 55    ..,?..Z+......U
20:40:56.712085 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [P.], seq 137:208, ack 173, win 65535, length 71
	0x0000:  4500 006f 9522 4000 4006 2074 c0a8 01b2  E..o."@.@..t....
	0x0010:  c0a8 01f0 a23a 1a0c fa68 52cc 0000 948d  .....:...hR.....
	0x0020:  5018 ffff e352 0000 0000 55aa 0000 0002  P....R....U.....
	0x0030:  0000 000d 0000 0037 332e 3300 0000 0000  .......73.3.....
	0x0040:  0000 0700 0920 d832 0d91 0fb0 41e1 240d  .......2....A.$.
	0x0050:  c133 b03e c6da 47a5 9b4f bcd1 e4b9 8a03  .3.>..G..O......
	0x0060:  dee7 2c3f cc02 5a2b 04c4 af00 00aa 55    ..,?..Z+......U
20:40:56.720005 IP 192.168.1.240.49153 > ec2-18-185-218-106.eu-central-1.compute.amazonaws.com.8886: Flags [P.], seq 138:319, ack 139, win 2368, length 181
	0x0000:  4500 00dd 03d4 0000 ff06 078b c0a8 01f0  E...............
	0x0010:  12b9 da6a c001 22b6 0000 3e44 4a38 df8e  ...j.."...>DJ8..
	0x0020:  5018 0940 d7e8 0000 1703 0300 b042 416f  P..@.........BAo
	0x0030:  6862 6d64 3661 4739 3149 4652 31f8 e4a1  hbmd6aG91IFR1...
	0x0040:  84ce d52e bdc1 a36d 84e3 43e1 10e9 0b16  .......m..C.....
	0x0050:  2702 bc93 e1f1 aad3 fa06 3ec4 fa3d b2fa  '.........>..=..
	0x0060:  8238 7687 6f05 8abf 140b 4da3 5cee c8b8  .8v.o.....M.\...
	0x0070:  aa4f cd1f c989 1ca9 1d0c 795f c06a d484  .O........y_.j..
	0x0080:  2a6f 924b 2cf8 c2a1 7585 a85b a136 5cc1  *o.K,...u..[.6\.
	0x0090:  80ac 1404 4850 2881 4a8a b76b 411a ae59  ....HP(.J..kA..Y
	0x00a0:  1b7a bbb8 aba7 4ff1 3783 7bc1 de48 72cd  .z....O.7.{..Hr.
	0x00b0:  9a98 e1b9 457c 81c1 9254 d377 27eb ed3c  ....E|...T.w'..<
	0x00c0:  9fe4 263e 41ca fc6e 1526 ef33 e7f8 88be  ..&>A..n.&.3....
	0x00d0:  e92b 6456 f8a2 c599 797b 7a8e 1f         .+dV....y{z..
20:40:56.720845 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 173:264, ack 208, win 2713, length 91
	0x0000:  4500 0083 03d5 0000 ff06 32ad c0a8 01f0  E.........2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 948d fa68 5313  .......:.....hS.
	0x0020:  5018 0a99 d5e4 0000 0000 55aa 0000 0000  P.........U.....
	0x0030:  0000 0008 0000 004b 0000 0000 332e 3300  .......K....3.3.
	0x0040:  0000 0000 0000 1c00 0000 0132 0d91 0fb0  ...........2....
	0x0050:  41e1 240d c133 b03e c6da 47be e5c9 a66a  A.$..3.>..G....j
	0x0060:  a6b6 5174 6eee e672 bac9 d94f 0c58 6945  ..Qtn..r...O.XiE
	0x0070:  347a 49aa 4b75 0d05 5c3c e11e 07fb 7a00  4zI.Ku..\<....z.
	0x0080:  00aa 55                                  ..U
20:40:56.720905 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 173:264, ack 208, win 2713, length 91
	0x0000:  4500 0083 03d5 0000 ff06 32ad c0a8 01f0  E.........2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 948d fa68 5313  .......:.....hS.
	0x0020:  5018 0a99 d5e4 0000 0000 55aa 0000 0000  P.........U.....
	0x0030:  0000 0008 0000 004b 0000 0000 332e 3300  .......K....3.3.
	0x0040:  0000 0000 0000 1c00 0000 0132 0d91 0fb0  ...........2....
	0x0050:  41e1 240d c133 b03e c6da 47be e5c9 a66a  A.$..3.>..G....j
	0x0060:  a6b6 5174 6eee e672 bac9 d94f 0c58 6945  ..Qtn..r...O.XiE
	0x0070:  347a 49aa 4b75 0d05 5c3c e11e 07fb 7a00  4zI.Ku..\<....z.
	0x0080:  00aa 55                                  ..U
20:40:56.740665 IP ec2-18-185-218-106.eu-central-1.compute.amazonaws.com.8886 > 192.168.1.240.49153: Flags [P.], seq 139:208, ack 319, win 33768, length 69
	0x0000:  4500 006d 0d3c 4000 ed06 d092 12b9 da6a  E..m.<@........j
	0x0010:  c0a8 01f0 22b6 c001 4a38 df8e 0000 3ef9  ...."...J8....>.
	0x0020:  5018 83e8 27fd 0000 1703 0300 400e 80aa  P...'.......@...
	0x0030:  276e 5c0b 606e c30e 255a 5290 f2e9 2cf9  'n\.`n..%ZR...,.
	0x0040:  77b4 d09c 582d fe23 8bb9 cfec 78fc 906c  w...X-.#....x..l
	0x0050:  615b cc88 6e71 dd85 af36 0f14 e973 3649  a[..nq...6...s6I
	0x0060:  7c5e 19a3 f7ba 1607 369f 25f5 93         |^......6.%..
20:40:56.823365 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 264, win 65535, length 0
	0x0000:  4500 0028 9523 4000 4006 20ba c0a8 01b2  E..(.#@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 5313 0000 94e8  .....:...hS.....
	0x0020:  5010 ffff 8c36 0000                      P....6..
20:40:56.823505 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 264, win 65535, length 0
	0x0000:  4500 0028 9523 4000 4006 20ba c0a8 01b2  E..(.#@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 5313 0000 94e8  .....:...hS.....
	0x0020:  5010 ffff 8c36 0000                      P....6..
20:40:56.825725 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 264:292, ack 208, win 2713, length 28
	0x0000:  4500 0044 03d6 0000 ff06 32eb c0a8 01f0  E..D......2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 94e8 fa68 5313  .......:.....hS.
	0x0020:  5018 0a99 a438 0000 0000 55aa 0000 0002  P....8....U.....
	0x0030:  0000 000d 0000 000c 0000 0000 8de1 4f44  ..............OD
	0x0040:  0000 aa55                                ...U
20:40:56.825785 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 264:292, ack 208, win 2713, length 28
	0x0000:  4500 0044 03d6 0000 ff06 32eb c0a8 01f0  E..D......2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 94e8 fa68 5313  .......:.....hS.
	0x0020:  5018 0a99 a438 0000 0000 55aa 0000 0002  P....8....U.....
	0x0030:  0000 000d 0000 000c 0000 0000 8de1 4f44  ..............OD
	0x0040:  0000 aa55                                ...U
20:40:56.829005 IP 192.168.1.240.49153 > ec2-18-185-218-106.eu-central-1.compute.amazonaws.com.8886: Flags [.], ack 208, win 2299, length 0
	0x0000:  4500 0028 03d7 0000 ff06 083d c0a8 01f0  E..(.......=....
	0x0010:  12b9 da6a c001 22b6 0000 3ef9 4a38 dfd3  ...j.."...>.J8..
	0x0020:  5010 08fb ab60 0000                      P....`..
20:40:56.927465 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 292, win 65535, length 0
	0x0000:  4500 0028 9524 4000 4006 20b9 c0a8 01b2  E..(.$@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 5313 0000 9504  .....:...hS.....
	0x0020:  5010 ffff 8c1a 0000                      P.......
20:40:56.927545 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 292, win 65535, length 0
	0x0000:  4500 0028 9524 4000 4006 20b9 c0a8 01b2  E..(.$@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 5313 0000 9504  .....:...hS.....
	0x0020:  5010 ffff 8c1a 0000                      P.......

Turn off

Captured with root@LEDE:~# tcpdump -i wlan0 dst 192.168.1.240 -X

root@LEDE:~# tcpdump -i wlan0 host 192.168.1.240 -X
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on wlan0, link-type EN10MB (Ethernet), capture size 262144 bytes
20:41:40.762601 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [P.], seq 4201141059:4201141130, ack 38204, win 65535, length 71
	0x0000:  4500 006f 9529 4000 4006 206d c0a8 01b2  E..o.)@.@..m....
	0x0010:  c0a8 01f0 a23a 1a0c fa68 5343 0000 953c  .....:...hSC...<
	0x0020:  5018 ffff e696 0000 0000 55aa 0000 0003  P.........U.....
	0x0030:  0000 000d 0000 0037 332e 3300 0000 0000  .......73.3.....
	0x0040:  0000 0800 0920 d8a8 5b7e 1c66 c995 c4fa  ........[~.f....
	0x0050:  49ba 3815 3f33 2863 f141 c27e 0295 4406  I.8.?3(c.A.~..D.
	0x0060:  c8d5 b6ad 8b11 0084 bfe8 f400 00aa 55    ..............U
20:41:40.762661 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [P.], seq 0:71, ack 1, win 65535, length 71
	0x0000:  4500 006f 9529 4000 4006 206d c0a8 01b2  E..o.)@.@..m....
	0x0010:  c0a8 01f0 a23a 1a0c fa68 5343 0000 953c  .....:...hSC...<
	0x0020:  5018 ffff e696 0000 0000 55aa 0000 0003  P.........U.....
	0x0030:  0000 000d 0000 0037 332e 3300 0000 0000  .......73.3.....
	0x0040:  0000 0800 0920 d8a8 5b7e 1c66 c995 c4fa  ........[~.f....
	0x0050:  49ba 3815 3f33 2863 f141 c27e 0295 4406  I.8.?3(c.A.~..D.
	0x0060:  c8d5 b6ad 8b11 0084 bfe8 f400 00aa 55    ..............U
20:41:40.769801 IP 192.168.1.240.49153 > ec2-18-185-218-106.eu-central-1.compute.amazonaws.com.8886: Flags [P.], seq 16190:16371, ack 1245241368, win 2230, length 181
	0x0000:  4500 00dd 03e5 0000 ff06 077a c0a8 01f0  E..........z....
	0x0010:  12b9 da6a c001 22b6 0000 3f3e 4a38 e018  ...j.."...?>J8..
	0x0020:  5018 08b6 decb 0000 1703 0300 b042 416f  P............BAo
	0x0030:  6862 6d64 3661 4739 3149 4652 31f8 e4a1  hbmd6aG91IFR1...
	0x0040:  84ce d52e bdc1 a36d 84e3 43e1 10e9 0b16  .......m..C.....
	0x0050:  2702 bc93 e1f1 aad3 fa06 3ec4 fad5 6d54  '.........>...mT
	0x0060:  ae1f 4737 24ea 45e7 83ad 1c44 97aa ae01  ..G7$.E....D....
	0x0070:  dcd4 2763 273c 4951 5c5f 1672 3183 c8c7  ..'c'<IQ\_.r1...
	0x0080:  a5cb e55a f359 2c63 b582 04d5 65ec b63b  ...Z.Y,c....e..;
	0x0090:  0833 1c0f 78b9 b1f0 d85a b345 2cc6 90dc  .3..x....Z.E,...
	0x00a0:  c289 087c 4291 a6f7 183a a960 4dcd 8cbe  ...|B....:.`M...
	0x00b0:  5f1e f70b 0139 0647 c382 95a9 4b2e 8de3  _....9.G....K...
	0x00c0:  5a45 282d 74e6 8dbe bd28 321c 41a0 46ed  ZE(-t....(2.A.F.
	0x00d0:  a2ce c9a4 6ba6 53c4 0eea 4179 92         ....k.S...Ay.
20:41:40.771661 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 1:92, ack 71, win 2594, length 91
	0x0000:  4500 0083 03e6 0000 ff06 329c c0a8 01f0  E.........2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 953c fa68 538a  .......:...<.hS.
	0x0020:  5018 0a22 c1c4 0000 0000 55aa 0000 0000  P.."......U.....
	0x0030:  0000 0008 0000 004b 0000 0000 332e 3300  .......K....3.3.
	0x0040:  0000 0000 0000 1d00 0000 01a8 5b7e 1c66  ............[~.f
	0x0050:  c995 c4fa 49ba 3815 3f33 2859 e9bc a724  ....I.8.?3(Y...$
	0x0060:  276a 8b68 656a 48ca 92af ebe9 437a 4039  'j.hejH.....Cz@9
	0x0070:  f372 d4c8 e56d 2833 2f49 fbfe ef76 ba00  .r...m(3/I...v..
	0x0080:  00aa 55                                  ..U
20:41:40.771721 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 1:92, ack 71, win 2594, length 91
	0x0000:  4500 0083 03e6 0000 ff06 329c c0a8 01f0  E.........2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 953c fa68 538a  .......:...<.hS.
	0x0020:  5018 0a22 c1c4 0000 0000 55aa 0000 0000  P.."......U.....
	0x0030:  0000 0008 0000 004b 0000 0000 332e 3300  .......K....3.3.
	0x0040:  0000 0000 0000 1d00 0000 01a8 5b7e 1c66  ............[~.f
	0x0050:  c995 c4fa 49ba 3815 3f33 2859 e9bc a724  ....I.8.?3(Y...$
	0x0060:  276a 8b68 656a 48ca 92af ebe9 437a 4039  'j.hejH.....Cz@9
	0x0070:  f372 d4c8 e56d 2833 2f49 fbfe ef76 ba00  .r...m(3/I...v..
	0x0080:  00aa 55                                  ..U
20:41:40.791841 IP ec2-18-185-218-106.eu-central-1.compute.amazonaws.com.8886 > 192.168.1.240.49153: Flags [P.], seq 1:70, ack 181, win 34840, length 69
	0x0000:  4500 006d 0d3e 4000 ed06 d090 12b9 da6a  E..m.>@........j
	0x0010:  c0a8 01f0 22b6 c001 4a38 e018 0000 3ff3  ...."...J8....?.
	0x0020:  5018 8818 fb92 0000 1703 0300 40f3 4fc9  P...........@.O.
	0x0030:  8454 7861 b2f3 5c87 3d62 ccd3 4368 8549  .Txa..\.=b..Ch.I
	0x0040:  8a6b 08fe b857 6482 14c3 34fb 3caf 99fb  .k...Wd...4.<...
	0x0050:  fffc 03b1 ddb0 b5f8 2d13 e8ad 1193 6530  ........-.....e0
	0x0060:  682c 00e0 4ad5 4c8d 0374 6ddf 3f         h,..J.L..tm.?
20:41:40.949741 IP 192.168.1.240.49153 > ec2-18-185-218-106.eu-central-1.compute.amazonaws.com.8886: Flags [.], ack 70, win 2161, length 0
	0x0000:  4500 0028 03e7 0000 ff06 082d c0a8 01f0  E..(.......-....
	0x0010:  12b9 da6a c001 22b6 0000 3ff3 4a38 e05d  ...j.."...?.J8.]
	0x0020:  5010 0871 aa66 0000                      P..q.f..
20:41:41.061321 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 92, win 65535, length 0
	0x0000:  4500 0028 952a 4000 4006 20b3 c0a8 01b2  E..(.*@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 538a 0000 9597  .....:...hS.....
	0x0020:  5010 ffff 8b10 0000                      P.......
20:41:41.061381 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 92, win 65535, length 0
	0x0000:  4500 0028 952a 4000 4006 20b3 c0a8 01b2  E..(.*@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 538a 0000 9597  .....:...hS.....
	0x0020:  5010 ffff 8b10 0000                      P.......
20:41:41.063021 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 92:120, ack 71, win 2594, length 28
	0x0000:  4500 0044 03e8 0000 ff06 32d9 c0a8 01f0  E..D......2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 9597 fa68 538a  .......:.....hS.
	0x0020:  5018 0a22 9975 0000 0000 55aa 0000 0003  P..".u....U.....
	0x0030:  0000 000d 0000 000c 0000 0000 5077 96c1  ............Pw..
	0x0040:  0000 aa55                                ...U
20:41:41.063081 IP 192.168.1.240.6668 > 192.168.1.178.41530: Flags [P.], seq 92:120, ack 71, win 2594, length 28
	0x0000:  4500 0044 03e8 0000 ff06 32d9 c0a8 01f0  E..D......2.....
	0x0010:  c0a8 01b2 1a0c a23a 0000 9597 fa68 538a  .......:.....hS.
	0x0020:  5018 0a22 9975 0000 0000 55aa 0000 0003  P..".u....U.....
	0x0030:  0000 000d 0000 000c 0000 0000 5077 96c1  ............Pw..
	0x0040:  0000 aa55                                ...U
20:41:41.662042 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 120, win 65535, length 0
	0x0000:  4500 0028 952b 4000 4006 20b2 c0a8 01b2  E..(.+@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 538a 0000 95b3  .....:...hS.....
	0x0020:  5010 ffff 8af4 0000                      P.......
20:41:41.662102 IP 192.168.1.178.41530 > 192.168.1.240.6668: Flags [.], ack 120, win 65535, length 0
	0x0000:  4500 0028 952b 4000 4006 20b2 c0a8 01b2  E..(.+@.@.......
	0x0010:  c0a8 01f0 a23a 1a0c fa68 538a 0000 95b3  .....:...hS.....
	0x0020:  5010 ffff 8af4 0000                      P.......