====== TEST REQUEST [35=1] ======

The Test Request message forces a Heartbeat response to verify session connectivity.

===== Message Specification =====

**Message Direction:** Bidirectional

^ Tag ^ Field Name ^ Type ^ Req'd ^ Description ^
| | **Message Header** | | Y | MsgType = 1 |
| 112 | TestReqID | String | Y | Unique identifier for this test request |
| | **Message Trailer** | | Y | |

===== Sample Messages =====

**Test Request:**
<code>
8=FIX.4.2|9=80|35=1|49=T4Example|56=T4|50=TraderName|52=20120905-18:09:12.103|
112=treqid.09.05.2012-13.09.12|10=123|
</code>

**Required Heartbeat Response:**
<code>
8=FIX.4.2|9=80|35=0|49=T4|56=T4Example|50=T4FIX|52=20120905-18:09:12.119|
112=treqid.09.05.2012-13.09.12|10=234|
</code>

===== Notes =====
  * Response must be Heartbeat with matching TestReqID
  * Can be sent anytime to verify connectivity
  * Checks sequence number synchronization
  * Failure to respond triggers Logout