Heartbeat

8=FIX.4.2
9=52
34=17
35=0
49=TEST1
52=20160201-19:35:42
56=DWFIX01
10=146

8=FIX.4.2
9=56
34=30
35=0
49=DWFIX01
52=20160201-19:35:56.492
56=TEST1
10=099

What does Test Request <1> message do?

• The Test Request <1> message forces a heartbeat from the opposing application and checks sequence numbers or verifies communication line status.

• The opposite application responds to the Test Request <1> with a Heartbeat <0> containing the TestReqID <112>.

What does the TestReqID <112> message do?

• The TestReqID <112> verifies that the opposite application is generating the heartbeat as the result of Test Request <1> and not a normal timeout.

• The opposite application includes the TestReqID <112> in the resulting Heartbeat <0>. Any string can be used as the TestReqID <112> (one suggestion is to use a timestamp string).