https://www.ibm.com/docs/en/zos/2.1.0?topic=SSLTBW_2.1.0/com.ibm.zos.v2r1.halu101/constatus.html
| Count | State | Received | Sent | Comment |
|---|---|---|---|---|
| 1 | Closed | |||
| 2 | Listen | Server received "listen" call and now it is waiting for connection. | ||
| 3 | SynRcvd | SYN | SYN,ACK | Server received SYN when listening and sent SYN,ACK |
| 4 | Estblsh | ACK | Server Received ACK and the connection is established. |
| Count | State | Sent | Received | Comment |
|---|---|---|---|---|
| 1 | Closed | |||
| 2 | SynSent | SYN | SYN,ACK | The client is in "SynSent" state while waiting for SYN,ACK after a SYN sent for the server. |
| 3 | Estblsh | ACK | Client received the SYN,ACK and sent the ACK. Now the connection is established. |