W&T 57630, Manual

Page: 100 / 211

100
W&T
TCP / UDP - Binary
5.6.5 Passwort protection
As already mentioned several times, the Web-IO in TCP server
mmode makes it possible to protect access to the application
by means of a password..
Before the actual connection to the Web-IO is opened, the
BIN_INFO structure defined here must be sent to Port 80 of the
Web-IO over a separate TCP connection.
The Web-IO also uses the BIN_INFO structure for its reply.
BinInfo BYTE[n] HTTPlogin n = 14 Byte + Password
(PC <-> Web-IO) WORD dummy always 0
BYTE type type of request
BYTE subtype additional type information
LONG srcip source IP address
WORD srcport source port
WORD destport detination port
The individual variables of the structure are filled as follows::
HTTPLogin[n]
Is a byte field or string consisting of a login string and the
administrator password..
GET /bin?LPW= <Administator Passwort> &
n stands for the number of bytes used and corresponds to 14
+ the length of the password. The length of the password is
restricted to max. 31 characters.
In the reply from the Web-IO HTTPLogin is always 8 characters
long and contains the following string::
GET /bin
Dummy
Separator between the ASCII and binary part of the structure..
is always = 0x00