3. API to Search VN-V686
VN-V686 in LAN can be searched by broadcast packet that includes this API.
Search VN-V686 in LAN
Protocol Send udp packet with following text in UDP payload to destination port number 80. Source port number
can be any value.
system.id<CRLF>
Response VN-V686 that received this packet sends udp packet to the source port number of the search packet.
UDP payload of response packet has model name, IP address, and subnet mask. VN-V686 waits 0-0.7 second before
sending response to avoid too many responses are sent in short period from many VN-V686s.
Response Example system.id=VN-V686U(192.168.0.2/24)&200 OK<CRLF>
4. Getting Alarm from VN-V6864.1. Procedure
1) The client establishes a TCP connection to port number 32040.
2) When motion is detected from the video image of VN-V686, or when there are changes to the alarm input (make
or break), VN-V686 will send out alarm information in the following format. The first 2 lines indicate the current
alarm input status (make or break). The following 1 line indicates whether motion has been detected.
peripheral.input_pin.pin(1).status=break<CRLF>
peripheral.input_pin.pin(2).status=break<CRLF>
video.input(1).detection(motion).status=on<CRLF>
3) The client can disconnect TCP32040 to end the alarm acquisition.
4.2. Restrictions
Maximum number of clients
The maximum number of clients that may acquire alarm is 10. When a 11th client establishes TCP connection to port
number 32040, VN-V686 disconnects the TCP connection.
Additionally, VN-V686 will also check whether the TCP connection is maintained at regular intervals. VN-V686 will
disconnect the TCP connection if syn exchange is not performed in 10 minutes.
Note: API for getting alarm is not restricted by the access restriction function.
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