Sessions
The following session messages are supported in both directions:
| Message | Type | Comment |
|---|---|---|
| Logon | A | Begin session (or resume a broken session). |
| Heartbeat | 0 | |
| Test Request | C | |
| Resend Request | 2 | |
| Reject | 3 | Malformed message or improper session level handling. |
| Sequence Reset | 4 | Both Gap Fill (GapFillFlag = Y) and Reset. |
| Logout | 5 | Used to gracefully close session. |