Heartbeat <0>

The client and the exchange transmit the Heartbeat <0> message to verify connectivity during periods of inactivity. The exchange will send a Heartbeat anytime it has not transmitted a message during the heartbeat interval. The client is expected to employ the same logic.

TagField NameData TypeReq’dComments
Standard headerYMsgType 35=0
112TestReqIDstringCIdentifier to be returned in resulting Heartbeat if requested from a TestRequest.
Standard trailerY