[root@vps public_html]#  tcpdump -s0  -nni eth0 host 123.30.245.222 -A
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
21:22:48.018984 IP 103.200.23.232.38436 > 123.30.245.222.80: Flags [S], seq 1130226930, win 14600, options [mss 1460,sackOK,TS val 2856114234 ecr 0,nop,wscale 7], length 0
Gg...{....$.PC]........9............
.<.:........
21:22:48.045619 IP 123.30.245.222.80 > 103.200.23.232.38436: Flags [S.], seq 3221544199, ack 1130226931, win 14480, options [mss 1460,sackOK,TS val 3398261721 ecr 2856114234,nop,wscale 7], length 0
E..<..@.3.W.{...g....P.$....C]....8............
..[..<.:....
21:22:48.045668 IP 103.200.23.232.38436 > 123.30.245.222.80: Flags [.], ack 1, win 115, options [nop,nop,TS val 2856114260 ecr 3398261721], length 0
Ng...{....$.PC].........s.......
.<.T..[.
21:22:48.045930 IP 103.200.23.232.38436 > 123.30.245.222.80: Flags [P.], seq 1:319, ack 1, win 115, options [nop,nop,TS val 2856114261 ecr 3398261721], length 318
E..r<.@.@...g...{....$.PC].........s.......
.<.U..[.POST /songan/api/v1/contacts HTTP/1.1
Accept: */*
Content-Type:application/json
Host:api.caresoft.vn
Authorization:Bearer ROm9SMnpbDZP3YDYYD
Content-Length:356

{"contact":{"username":"H\u1ed3 Ti\u1ebfn L\u1ed9c","phone_no":"0162","email":"tienlocho@gmail.com","address":"78\/1 Phan \u0110\u00ecnh Ph\u00f9ng"}}
21:22:48.072749 IP 123.30.245.222.80 > 103.200.23.232.38436: Flags [.], ack 319, win 122, options [nop,nop,TS val 3398261748 ecr 2856114261], length 0
E..4..@.3...{...g....P.$....C].1...z.p.....
..[..<.U
21:23:48.246567 IP 123.30.245.222.80 > 103.200.23.232.38436: Flags [P.], seq 1:957, ack 319, win 122, options [nop,nop,TS val 3398321920 ecr 2856114261], length 956
E.....@.3..]{...g....P.$....C].1...z.n.....
..G..<.UHTTP/1.1 200 OK
Date: Wed, 15 Mar 2017 14:22:48 GMT
Server: Apache/2.2.15 (CentOS)
Vary: Authorization
X-Powered-By: PHP/5.6.20
Cache-Control: no-cache
X-RateLimit-Limit: 200
X-RateLimit-Remaining: 188
Set-Cookie: laravel_session=eyJpdiI6ImtjZjErTE5HRTZGMXdCbUtQd1VqdUE9PSIsInZhbHVlIjoicXhCQVBoM2IrMmF0RDZpSUk2aE5SQ29TQXhwXC9Lcyt5UHk5SGFTblJGOWw1NlpVc1RHYmQzS1gzZ3F6UzhLQnpxb3ZOSXRXajcydXpUU0c2alZkYmNnPT0iLCJtYWMiOiJhNzhkMmM3NTg2OWEwM2QzNjA1ZjA4NDk0ZTRhNTcwN2M2YmMwNmI0Zjk1NDk1OGE1ZmZiZWFjOWY1OGVjZGU0In0%3D; expires=Thu, 17-Feb-2022 14:23:48 GMT; Max-Age=155520000; path=/; httponly
Content-Length: 288
Connection: close
Content-Type: application/json

{"code":"ok","contact":{"id":"5304035","username":"H\u1ed3 Ti\u1ebfn L\u1ed9c","email":"matthew@gmail.com","email2":"tienlocho@gmail.com","phone_no":"0162","phone_no2":null,"phone_no3":null,"facebook":"","gender":"0","created_at":"2017-03-10 15:48:01","updated_at":"2017-03-10 15:48:01"}}
21:23:48.246643 IP 103.200.23.232.38436 > 123.30.245.222.80: Flags [.], ack 957, win 129, options [nop,nop,TS val 2856174461 ecr 3398321920], length 0
Lg...{....$.PC].1.........w.....
.=.}..G.
21:23:48.246664 IP 123.30.245.222.80 > 103.200.23.232.38436: Flags [F.], seq 957, ack 319, win 122, options [nop,nop,TS val 3398321921 ecr 2856114261], length 0
E..4..@.3...{...g....P.$....C].1...z.......
..G..<.U
21:23:48.246825 IP 103.200.23.232.38436 > 123.30.245.222.80: Flags [F.], seq 319, ack 958, win 129, options [nop,nop,TS val 2856174462 ecr 3398321921], length 0
Kg...{....$.PC].1.........s.....
.=.~..G.
21:23:48.273455 IP 123.30.245.222.80 > 103.200.23.232.38436: Flags [.], ack 320, win 122, options [nop,nop,TS val 3398321947 ecr 2856174462], length 0
E..4..@.3...{...g....P.$....C].2...z.`.....
..G..=.~