Networking Notes

There are five programs that communicate over the network to make data collection happen in SLTK; each could potentially be at a different IP address.

Editing Network Configuration

There are three places to change network addresses/ports:

• ports.h
  • SERVER_CONTROL_ADDRESS : computer running slcapture.py
• slcapture.py (top of file)
  • cam_server_addr : computer running mjpg-streamer
  • display_server_addr : computer running sldisp
  • GUI_server_addr : computer running slcontrol.pde
• slcontrol.pde (top of file)
  • remoteControl : computer running slcapture.py
  • remoteDisplay : computer running sldisp

Ports

1. slcapture.py (main program)

   • IN:
     • 8080 : images from mjpg-streamer
     • 4010 : scan parameter and trigger from slcontrol
     • 4010 : status updates from sldisp
     • 4040 : status updates from slturn
   • OUT:
     • 4011 : progress update to slcontrol
     • 4021 : pattern requests to sldisp
     • 4041 : rotation requests to slturn

2. mjpg-streamer (camera)

   • OUT:
     • 8080 : JPG images to slcapture

3. sldisp (projector)

   • IN:
     • 4021 : pattern requests from slcapture, slcontrol
   • OUT:
     • 4010 : status updates to slcapture

4. slcontrol (GUI)

   • IN:
     • 4011 : progress update from slcapture
   • OUT:
     • 4010 : scan parameters and trigger to slcapture
     • 4021 : pattern requests to sldisp

5. slturn (turntable)

   • IN:
     • 4041 : rotation requests from slcapture
   • OUT:
     • 4040 : progress update to slcapture