JVC VN-V685U - Manual (Page 16)

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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-V685/686/686B disconnects the TCP connection.
Additionally, VN-V685/686/686B will also check whether the TCP connection is maintained at regular intervals.
VN-V685/686/686B 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.
5. Using API that Requires Basic Authentication
Basic authentication is required for APIs which are explained in Section 6. This section provides general explanation of
those APIs.
5.1. Procedure
1) The client establishes a TCP connection to port number 80.
2) The client sends API.
API has following structure.
The following is an example of API for Getting subnet mask of VN-V685/686/686B.
Example
GET /api/param?network.interface.subnetmask HTTP/1.1<CRLF>
Accept: text/plain<CRLF>
Host: 192.168.0.2<CRLF>
Authorization: Basic YWRtaW46anZj<CRLF><CRLF>
Specify the response format by Accept line. Plain text response is returned when this is specified as text/plain. HTML
response is returned when text/html is specified. HTML response is returned when Accept is not specified.
These APIs for getting/setting parameters are protected by basic authentication. Authorization line needs to include
Accept: text/plain (or text/html) space
space HTTP/1.1 0x0D 0x0A
Host: space IP Address of VN-V685/686/686B 0x0D 0x0A
Authorization: Basic space Encoded User Name and Password 0x0D 0x0A 0x0D 0x0A
GET space API Characters
0x0D 0x0A