0
Heartbeat (0)
A heartbeat should be sent before the timeout defined in the Logon (35=A) message is expired.
The timeout is set to 30 seconds. A heartbeat must arrive before 29.999999 seconds have elapsed. If a full 30-seconds period elapses without heartbeat messages, a timeout will occur. In this case, the server may close the connection, as the connection will be considered inactive.
字段
标签姓名要求
- 标签姓名
Header
要求Y描述Standard header, with 35=0.
- 标签姓名
Trailer
要求Y
Y必填项——每条消息都必须包含此字段。
N可选——可以省略。
N*条件性必填——除非在说明中另有说明（查找 (*)），否则为可选。
