Denkovi SmartDEN IP-32IN, User Manual

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SmartDEN IP-32IN User Manual
17 Jan 2018
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8. HTTP server
This operation mode allows custom applications to obtain the input values from
SmartDEN IP-32IN without using a Web-browser. The custom application acts as a
HTTP client, sending HTTP GET requests to the SmartDEN IP-32IN (Fig. 52).
Figure 52. SmartDEN IP-32IN can work as HTTP server
To receive the current state of the SmartDEN IP-32IN , the application requests
the page current_state.xml / current_state.json , for example:
http://192.168.1.100/current_state.xml
http://192.168.1.100/current_state.json
In order to use this mode, XML/JSON access should be enabled.
The login process differs depending on the selected Encrypt Password option.
8.1. XML access
8.1.1. XML login (encrypted password)
In this mode a two-step login sequence is provided as a protection against
unauthorized access.
The first time the custom application requests the page current_state.xml , a
random login key is issued in the reply. Next the custom application uses this key to
encrypt the password. The encrypted password is sent as a parameter with the next
request to the page
current_state.xml .
Bellow is an example of login process:
Step 1:
Request
http://192.168.1.100/current_state.xml
Reply (login required):
<CurrentState>
<LoginKey>65156</LoginKey>
</CurrentState>
Step 2:
Request (password is sent as a parameter)