Hitachi LP-AW4001 - Page 101

101
Automatic Connection Break
The TCP connection will be automatically disconnected after there is no
communication for 30 seconds after being established.
The projector does not accept commands without authentication success
when authentication is enabled. The projector uses a challenge response type
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this data with the MD5 algorithm and add this in front of the commands to send.
The following is a sample if the Password is set to “password” and the random 8
bytes are “a572f60c”.
Authentication
1) Connect the projector.
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becomes “a572f60cpassword”.
4) Digest this bind “a572f60cpassword” with MD5 algorithm.
It will be “e3d97429adffa11bce1f7275813d4bde”.
5) Add this “e3d97429adffa11bce1f7275813d4bde” in front of the commands
and send the data.
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6) When the sending data is correct, the command will be performed and the
reply data will be returned. Otherwise, an authentication error will be returned.
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authentication data can be omitted when the same connection.
NOTE
8. Other Functions
8.4 Command Control via the Network (continued)