My computer develop environment
1
2
3
4
| $ sw_vers
ProductName: Mac OS X
ProductVersion: 10.12.6
BuildVersion: 16G29
|
1
2
3
4
5
6
7
8
| Host A sends a TCP SYNchronize packet to Host B
Host B receives A's SYN
Host B sends a SYNchronize-ACKnowledgement
Host A receives B's SYN-ACK
Host A sends ACKnowledge
Host B receives ACK.
|
TCP socket connection is ESTABLISHED.
It means that
| STEP |
Sender |
Receiver |
Purpose |
| 1 |
Host A |
Host B |
B knows A can send |
| 2 |
Host B |
Host A |
A knows B can receive and send |
| 3 |
Host A |
Host B |
B knows A can receive |
TCP socket connection is ESTABLISHED.