A
Logon (A)
The first message of the session must be a Logon (35=A) message sent by the client. If the credentials are accepted, the server will respond with a Logon (35=A). If the credentials are invalid, the connection will be closed.
字段
标签姓名要求描述
- 标签姓名
Header
要求Y描述Standard header, with 35=A.
- 标签98姓名
EncryptMethod
要求Y描述Because it is always unencrypted, the tag is always set to 0.
- 标签108姓名
HeartBtInt
要求Y描述The interval in seconds between heartbeats. The tag is always set to 30.
- 标签141姓名
ResetSeqNumFlag
要求N描述Supported values: N = No Y = Yes (reset sequence numbers)
- 标签553姓名
Username
要求Y*描述The user name.
- 标签554姓名
Password
要求Y*描述The password.
- 标签姓名
Trailer
要求Y描述
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。
