Port 8080 is used by some other program

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1

Hi, I am using a Raspberry pi given by my friend. I did most of the Octoprint set-up. Now I would like to stream the webcam. Here, I hit a road block. One of my friend's program is using port 8080. He didn't remember how to switch off that program. So, I need to change the port for my webcam stream. I tried to change the hproxy settings, such as the following:

Try1) frontend public
bind *:88
bind 0.0.0.0:443 ssl crt /etc/ssl/snakeoil.pem

Try2) backend webcam
reqrep ^([^\ :])\ /webcam/(.) \1\ /\2
server webcam1 127.0.0.1:8888

I am not successful so far. I rebooted my Pi after every new try. Please help to stream my webcam on to Octoprint. Many thanks in advance.

2

I'd be more concerned with what's running on port 8080, I for one wouldn't want random servers or services running if I didn't know what they were, might be anything. Flash the SD card with OctoPi and wipe it clean, start fresh.

3

Chase down the inherited program that's already running on port 8080 and turn it off. Here, I'm looking to see what's running on port 5000.

sudo netstat -lptu|grep ":5000"
tcp        0      0 127.0.0.1:5000          0.0.0.0:*               LISTEN      395/python2 

ps 395
  PID TTY      STAT   TIME COMMAND
  395 ?        Sl     0:11 /home/pi/oprint/bin/python2 /home/pi/oprint/bin/octoprint serve --host=127.0.0.1 --port=5000

cat /etc/init.d/octoprint   # This would be how the service is started at bootup
# consider deleting this file in your case and rebooting (just not "octoprint", obviously)
4

Thanks for your advice. I will check this asap and kill the program.

5

Hi, I have tried to follow your instruction of seeing on port 8080, but I didn't get any response. But for port 5000, I got the below response.

pi@EamonnProject:~ $ sudo netstat -lptu|grep ":8080"
pi@EamonnProject:~ $ sudo netstat -lptu|grep ":5000"
tcp        0      0 *:5000                  *:*                     LISTEN      582/python2     
tcp6       0      0 [::]:5000               [::]:*                  LISTEN      582/python2     
pi@EamonnProject:~ $

However, I found that the program running at 8080 is codesyscontrol

I stopped it using the following command.

sudo /etc/init.d/codesyscontrol stop

Now, if I do http://127.0.0.1:8080/?action=snapshot on pi, I get a message that I can't access the page.
Same thing is happening with the http://192.168.1.22:8080/?action=stream

Please let me know how to get access to these. Note that I can see the octoprint profile on port 5000.

6

If it´s not something that was just tested or used earlier.. i would not stop that program. codesys is a PLC like controller that steers Hardware from the PI. If you still have the hardware...it will cease to work properly .
Otherwise remove it´s startup entry from /etc/init.d

7

Yes, the hardware is not connected now. It was for a different application and that project was over. Now, nothing is shown on port 8080. I want to see video stream from the webcam on this port. Please advice me how can I make it happen through Octoprint.

8

Now that you've managed to stop codesys, consider archiving out of the /etc/init.d folder that script; move it somewhere under the pi's home directory temporarily if you'd like. You'll probably need to do this with sudo mv /etc/init.d/codesys /home/pi/., for example. In this way, it won't return after a reboot.

Next, go back to your vanilla OctoPi installation with respect to mjpg_streamer's use of 8080.

This appears to be how Guy is running the mjpg_streamer service, for what it's worth. And this then is referred to from /etc/init.d/webcamd. In theory then, try sudo service webcamd start and see if it shows up in ps -ax|grep mjpg_streamer.