Logout Response Message Fields

A Logout Response message is usually sent in response to a Logout Request message. Any queued data is transmitted, a Logout Response message is sent, and Cboe will close the connection. However, a Logout Response message may also be sent if the member violates the protocol specification (e.g., by moving backwards in sequence number).

Table 1. Logout Response Message Fields
Field NameOffsetLengthData TypeDescription
StartOfMessage02Binary B0 E3 (58288)
MessageLength22Binary 47 00 (71)
MessageType42Binary F7 01 (503)
MatchingUnit61BinaryWill be zero
Reserved71BinaryUnspecified
SequenceNumber84BinaryWill be zero
LogoutReason121Text
  • Reason for the logout.
  • U = User Requested
  • A = Administrative
  • ! = Protocol Violation
LogoutReasonText1360TextHuman-readable text with additional information about the reason for logout.
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