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Logout
Session Termination
The Logout message requests or indicates the termination of a FIX session. The logout initiator should wait for a response and/or confirmation to the logout condition. This will permit the counterparty to gently close its connection and honor a potential message gap-fill.
If the T4 FIX API server initiates a Logout, an issuing physical disconnection will follow. When possible, the T4 FIX API will provide information on the nature or cause of the termination. If the client sends a Logout message, no more messages should be sent by the client.
Under normal operating conditions, the client requests a logout and the T4 FIX API server honors the request. A physical disconnection without an exchange of Logout messages is considered an abnormal condition.
Failed Authentication
To start a new FIX session, the T4 FIX API will need to reach successful authentication of the client's Logon message. To provide as much information as possible, a failed authentication is responded (by the T4 FIX API) with a Logout message.
A new FIX session (with sequence numbers reset to 1) will be required after the receipt of a Logout message and its subsequent physical disconnection.
Message Dictionary
| Tag | Field Name | Req'd | Comments |
|---|---|---|---|
| Standard Header | Y | MsgType = 5 | |
| 58 | Text | N | Free format text string. Contains information related to the cause of the logout. |
| Standard Trailer | Y |
Sample Message
Client request to logout: