Session-Level Messages
Logon <A>
The Logon <A> message must be the first message sent by the application requesting to initiate a FIX session. The Logon <A> message authenticates an institution establishing a connection to Gemini.
Upon receipt of a Logon <A> message, Gemini will authenticate the institution requesting connection by validating the source IP Address, SenderCompID <49>, and TargetCompID <56> identifying the institution. The server will then issue a Logon <A> message as acknowledgment that the connection request has been accepted. The acknowledgment Logon <A> can also be used by the institution to validate that the connection was established with the correct party. If validation fails, the connection will be dropped without a Reject <3>.
FIELDS
| Tag | Name | Req | Description |
|---|---|---|---|
| Standard Header | Y | MsgType = A | |
| 141 | ResetSeqNumFlag | N | Should be set to Y when the client wants to indicate that both sides of the FIX session should reset sequence numbers. |
| 98 | EncryptMethod | Y | Gemini does not support encryption. Valid value: 0 = None |
| 108 | HeartBtInt | Y | Heartbeat interval in seconds. Valid value: 30 = 30 seconds |
| 9001 | CancelOnDisconnect | N | Only used for Order Entry. When present and true, orders will be cancelled on disconnect. When present and false, orders will not be cancelled on disconnect. When absent, orders will not be cancelled on disconnect. Valid values: Y = Enable cancel on disconnect for this sessionN = Disable cancel on disconnect for this session |
| Standard Trailer | Y |