In this trace, the local host issued close immediately after having accepted the connection. Can you fill the missing information in the last four TCP segments ?
# |
Length |
Summary |
Status |
0 |
24 bytes |
Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: 2520729040, Len: 0 |
|
1 |
24 bytes |
Transmission Control Protocol, Src Port: 8080, Dst Port: 43508, Seq: 0, Ack: 2520729041, Len: 0 |
|
2 |
20 bytes |
Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: 2520729041, Ack: 1, Len: 0 |
|
3 |
20 bytes |
Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: ????, Ack: ????, Len: 0 |
|
4 |
20 bytes |
Transmission Control Protocol, Src Port: 8080, Dst Port: 43508, Seq: ????, Ack: ????, Len: 0 |
|
5 |
20 bytes |
Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: ????, Ack: ????, Len: 0 |
|
0000
a9
f4
1f
90
96
3f
45
d0
00
00
00
00
60
02
4e
20
0010
02
1c
00
00
02
04
03
e8
0000
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- Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: 2520729040, Len: 0
- Source Port: 43508
- Destination Port: 8080
- TCP Segment Len: 0
- Sequence number: 2520729040
- Acknowledgment number: 0
- 0110 .... = Header Length: 24 bytes (6)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..0. .... = Urgent: Not set
- .... ...0 .... = Acknowledgment: Not set
- .... .... 0... = Push: Not set
- .... .... .0.. = Reset: Not set
- .... .... ..1. = Syn: Set
- .... .... ...0 = Fin: Not set
- Window size value: 20000
- Calculated window size: 20000
- Checksum: 0x021c [unverified]
- Urgent pointer: 0
- Options: (4 bytes), Maximum segment size
- TCP Option - Maximum segment size: 1000 bytes
- Kind: Maximum Segment Size (2)
- Length: 4
- MSS Value: 1000
0000
1f
90
a9
f4
00
00
00
00
96
3f
45
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60
12
27
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04
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- Transmission Control Protocol, Src Port: 8080, Dst Port: 43508, Seq: 0, Ack: 2520729041, Len: 0
- Source Port: 8080
- Destination Port: 43508
- TCP Segment Len: 0
- Sequence number: 0
- Acknowledgment number: 2520729041
- 0110 .... = Header Length: 24 bytes (6)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..0. .... = Urgent: Not set
- .... ...1 .... = Acknowledgment: Set
- .... .... 0... = Push: Not set
- .... .... .0.. = Reset: Not set
- .... .... ..1. = Syn: Set
- .... .... ...0 = Fin: Not set
- Window size value: 10000
- Calculated window size: 10000
- Checksum: 0xcb3f [unverified]
- Urgent pointer: 0
- Options: (4 bytes), Maximum segment size
- TCP Option - Maximum segment size: 1000 bytes
- Kind: Maximum Segment Size (2)
- Length: 4
- MSS Value: 1000
0000
a9
f4
1f
90
96
3f
45
d1
00
00
00
01
50
10
4e
20
0010
02
18
00
00
0000
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Ñ
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0010
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- Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: 2520729041, Ack: 1, Len: 0
- Source Port: 43508
- Destination Port: 8080
- TCP Segment Len: 0
- Sequence number: 2520729041
- Acknowledgment number: 1
- 0101 .... = Header Length: 20 bytes (5)
- Flags
- 000. .... .... = Reserved: Not set
- ...0 .... .... = Nonce: Not set
- .... 0... .... = Congestion Window Reduced (CWR): Not set
- .... .0.. .... = ECN-Echo: Not set
- .... ..0. .... = Urgent: Not set
- .... ...1 .... = Acknowledgment: Set
- .... .... 0... = Push: Not set
- .... .... .0.. = Reset: Not set
- .... .... ..0. = Syn: Not set
- .... .... ...0 = Fin: Not set
- Window size value: 20000
- Calculated window size: 20000
- Window size scaling factor: -2 (no window scaling used)
- Checksum: 0x0218 [unverified]
- Urgent pointer: 0
0000
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- Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: ????, Ack: ????, Len: 0
0000
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- Transmission Control Protocol, Src Port: 8080, Dst Port: 43508, Seq: ????, Ack: ????, Len: 0
0000
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90
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- Transmission Control Protocol, Src Port: 43508, Dst Port: 8080, Seq: ????, Ack: ????, Len: 0