HTTP string: Send from AlphaCom

You can send HTTP GET to third-party systems using EDO ports and Event Handler.

Each EDO port can control one camera. There are 10 EDO ports, so in total one can control up to 10 cameras using the method described in this article.

Configuration

Set up EDO port

In AlphaPro select Exchange & System > Serial Ports > Configure EDIO port

Port-Type: TCP/IP Client
IP-Address: destination IP
Port: destination port, usually 80 when HTTP.
Keep-Alive: off

Create Event

Use EDO command to send HTTP GET on the configured port.

Example using DAK 1 to send HTTP GET:

EDO 1 "GET /triggerevent?variable1=test1&variable2=test2 HTTP/1.1\r\nHost: 10.5.101.110\r\nConnection: Keep-Alive\r\n"
EDO 1 "Accept: */*\r\n\r\n"

A string generated by the EDO command can contain maximum 128 characters. If the http string exceeds this length, one can simply use multiple EDO commands.

Example: Control PTZ on an Axis camera

Every time DAK 1 is pushed on intercom station 179 you want to pan an Axis camera with IP address 10.5.102.44 10 degrees to the left. Pushing DAK 2 should pan the camera 10 degrees to the right.

HTTP commands used by Axis

• Relative pan: 10 degrees right

http://myserver/axis-cgi/com/ptz.cgi?rpan=10

• Relative pan: 10 degrees left

http://myserver/axis-cgi/com/ptz.cgi?rpan=-10

EDIO port configuration

EDIO port #1 configured to send commands to camera 10.5.102.44

Event configuration

Station 179 presses DAK 1 (= Sub Event 1):

DAK 1 press will send http command to camera to pan 10 degrees to the left

Action strings:

EDO 1 "GET /axis-cgi/com/ptz.cgi?rpan=-10 HTTP/1.1\r\n"
EDO 1 "Accept: */*\r\n\r\n"

Station 179 presses DAK 2 (= Sub Event 2):

DAK 2 press will send http command to camera to pan 10 degrees to the right

Action strings:

EDO 1 "GET /axis-cgi/com/ptz.cgi?rpan=10 HTTP/1.1\r\n"
EDO 1 "Accept: */*\r\n\r\n"