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Sat Aug 30, 2014 2:23 pm

Hello,

Is it possible to "forward" the mjpeg output stream to a remote server, and then view the stream by visiting that server? For instance, ff the rPi is behind a wifi/firewall that won't enable me to browse to it from an external browser, is it possible to somehow netcat that mjpeg file (or some other means) to an external location of my choosing, and be able to view it that way?

I've browsed around these forums, and the googles, but haven't seen any examples of this setup. Thanks for any ideas!

Greg

kusti8 · Sat Aug 30, 2014 4:24 pm

You could just setup port forwarding and view it directly on the pi to reduce latency and the use for another server.

ohm3141 · Sat Aug 30, 2014 5:41 pm

kusti8 wrote:You could just setup port forwarding and view it directly on the pi to reduce latency and the use for another server.

In this example, I don't have access to the (open Wifi) router. How can I "push" the mjpeg feed to another server (e.g., my website)?

Greg

kusti8 · Sat Aug 30, 2014 7:52 pm

I don't understand what you mean. Where is the website server. If it is your local computer, run a Ethernet cable from that to the raspberry pi and google how to bridge a network. If the website is hosted by a service, there is no way without a network.

ohm3141 · Sat Aug 30, 2014 11:29 pm

kusti8 wrote:I don't understand what you mean. Where is the website server. If it is your local computer, run a Ethernet cable from that to the raspberry pi and google how to bridge a network. If the website is hosted by a service, there is no way without a network.

The Pi is going to be located in a public place, associated to a public wifi that I don't have control over, viewing a TV screen that I'd want to stream back to me, say, sitting at home. So the server could be my home computer, or a hosted web server owned by me. I'm just wondering if there's a way to forward, or access remotely, the mjpeg stream that's created locally on the Pi, keeping in mind I can't port forward on the wifi router the Pi is attached to.

It'd be awesome if the output location of the mjpeg-streamer program could be, instead of "/var/www", "user@www.xxx.yyy.zzz:/var/www". But if that's not possible, some kind of script or program that could constantly re-stream the mjpeg file to another server of my choosing. Does that make sense? I'm trying to find examples of people doing something like this but I'm not coming up with anything.

Greg

ghans · Sun Aug 31, 2014 12:28 pm

Ahh , the wonders of NATing .

Well this is a though one. The scalable solution is to set up
a VPN server and have the Pi act as client. With OpenVPN
you can mitigate the "impact" of firewalls and NAT easily
(at least that's what i heard).

The hacky solution is to use reverse SSH tunneling.
First get grips on using mjpeg-streamer. It is a popular piece
of software , and the foundations V4L2 driver has
made it quite easy to use it with the official camera .
See here for a good guide :
http://www.raspberrypi.org/forums/viewt ... 43&t=83570

Report your progress after trying that , while i look for
my notes on SSH tunneling ...

ghans

philthy07 · Sun Aug 31, 2014 1:59 pm

There is a post on how to forward a stream to a FTP server. Won't be real time, but if you started viewing the file @ 1 fps less than was being saved it should flow pretty well.

https://medium.com/@Cvrsor/how-to-make- ... 5a2d61da3d

ohm3141 · Sun Aug 31, 2014 2:12 pm

ghans wrote:The hacky solution is to use reverse SSH tunneling.

Ghans,

I've successfully setup an automatic reverse SSH connection with the Pi in the past. If I get that up and running again, do you think I'd be able to port forward http requests from my local computer across the ssh tunnel? So when the user browses to ":80/var/www/video_feed.mjpeg" it actually sends them down the ssh tunnel to ":80/var/www/video_feed.mjpeg"?

Thanks for the suggestion philthy07, but the lag with the motion/ftp setup will be too great for my application.

Greg

ghans · Sun Aug 31, 2014 2:25 pm

Yes , but then the stream is only accessible for people in
your LAN. Except you make your SSH server listen on
all interfaces , enable portforwarding and run a DynDNS
client in parallel.

ghans

kusti8 · Mon Sep 01, 2014 5:20 pm

ghans wrote:Yes , but then the stream is only accessible for people in
your LAN. Except you make your SSH server listen on
all interfaces , enable portforwarding and run a DynDNS
client in parallel.

ghans

Above it says that he does not have access to the network and cannot configure port forwarding since it is public.

ohm3141 · Sun Sep 07, 2014 6:57 pm

ghans wrote:The hacky solution is to use reverse SSH tunneling.

SSH tunneling was the appropriate solution - thanks ghans. For those that are interested, here's what I had to do. When the pi starts up I automatically start a reverse SSH connection back to a computer I control like so:

ssh -fN -p 22222 -R \*:9000:localhost:22 @

This sets up a listening port (9000) on my computer that enables me to login to the pi when it's behind its wifi/firewall. Then I initiate a port forward command using ssh on the computer I control like so:

ssh -L \*:8080:localhost:80 @localhost -p 9000

Now, when I browse localhost:8080 on my computer, it forwards all requests over port 9000 to the pi, essentially serving up the webpage that the Pi is hosting (an mjpeg feed from the camera). I also have my home router setup to forward external 8080 requests to my computer that has the port forward running, so I can access the pi's webcam externally.

Greg

ghans · Mon Sep 08, 2014 6:13 am

Check out autossh to keep your connection up all the time:
http://www.harding.motd.ca/autossh/

ghans

bobdxcool · Tue Sep 20, 2016 5:23 am

ohm3141 wrote:

ghans wrote:The hacky solution is to use reverse SSH tunneling.

SSH tunneling was the appropriate solution - thanks ghans. For those that are interested, here's what I had to do. When the pi starts up I automatically start a reverse SSH connection back to a computer I control like so:

ssh -fN -p 22222 -R \*:9000:localhost:22 @

This sets up a listening port (9000) on my computer that enables me to login to the pi when it's behind its wifi/firewall. Then I initiate a port forward command using ssh on the computer I control like so:

ssh -L \*:8080:localhost:80 @localhost -p 9000

Now, when I browse localhost:8080 on my computer, it forwards all requests over port 9000 to the pi, essentially serving up the webpage that the Pi is hosting (an mjpeg feed from the camera). I also have my home router setup to forward external 8080 requests to my computer that has the port forward running, so I can access the pi's webcam externally.

Greg

Hi

I was using motion to setup a live webcam feed from the pi 3. I am using a 3g dongle for internet. I want to stream the live video onto my web server with a static IP. I have a frontend UI running on my webserver and I wish to view the live video stream , when I click a certain Tab on the UI. I was going through your method of using a reverse ssh tunnel to view the live stream. So when the pi boots up, I send the command

Code: Select all

ssh -fN -p 22222 -R \*:9000:localhost:22 @

And when I want to view the live stream from the pi and click on the particular tab on the UI of my web server, I make the server send out the command in the background:

Code: Select all

ssh -L \*:8080:localhost:80 @localhost -p 9000

After the command is sent ,the particular tab (video stream tab) on the UI is directed to the URL, "localhost:8080".

Is this correct ? Is there anything else that would be required for me to do ?

RpiName · Tue Sep 20, 2016 7:28 am

ohm3141 wrote:Is it possible to "forward" the mjpeg output stream to a remote server, and then view the stream by visiting that server? For instance, ff the rPi is behind a wifi/firewall that won't enable me to browse to it from an external browser, is it possible to somehow netcat that mjpeg file (or some other means) to an external location of my choosing, and be able to view it that way?

See this:
http://www.linux-projects.org/uv4l/tuto ... to-camera/

bobdxcool · Tue Sep 20, 2016 3:22 pm

RpiName wrote:

ohm3141 wrote:Is it possible to "forward" the mjpeg output stream to a remote server, and then view the stream by visiting that server? For instance, ff the rPi is behind a wifi/firewall that won't enable me to browse to it from an external browser, is it possible to somehow netcat that mjpeg file (or some other means) to an external location of my choosing, and be able to view it that way?

See this:
http://www.linux-projects.org/uv4l/tuto ... to-camera/

Thanks. I was looking online regarding using uv4l for streaming. It does stream the video with good quality. But again, I have to enter the raspberry pi IP address again to view the stream and so the stream can only be viewed locally. My question is how do I make it stream to my server ?

RpiName · Tue Sep 20, 2016 7:10 pm

bobdxcool wrote:Thanks. I was looking online regarding using uv4l for streaming. It does stream the video with good quality. But again, I have to enter the raspberry pi IP address again to view the stream and so the stream can only be viewed locally. My question is how do I make it stream to my server ?

I do not know what you exactly mean by "my server", but UV4L not only supports end-to-end audio/video streaming like you said, but, to put it simple, it can "push" audio/video streams from any supported device (or pseudo-device in your case) to a given Janus or Jitsi Meet server deployed on internet or other networks. In other words, you do not necessarily need to know the address of your Raspberry Pi. I suggest that you read through the tutorials at http://linux-projects.org for more informations.

bobdxcool · Wed Sep 21, 2016 5:08 am

RpiName wrote:

bobdxcool wrote:Thanks. I was looking online regarding using uv4l for streaming. It does stream the video with good quality. But again, I have to enter the raspberry pi IP address again to view the stream and so the stream can only be viewed locally. My question is how do I make it stream to my server ?

I do not know what you exactly mean by "my server", but UV4L not only supports end-to-end audio/video streaming like you said, but, to put it simple, it can "push" audio/video streams from any supported device (or pseudo-device in your case) to a given Janus or Jitsi Meet server deployed on internet or other networks. In other words, you do not necessarily need to know the address of your Raspberry Pi. I suggest that you read through the tutorials at http://linux-projects.org for more informations.

When I say my server, I mean I have rented a linux server on AWS with a static IP and have a UI running on the front end of this server.

bobdxcool · Thu Sep 22, 2016 7:31 am

ghans wrote:Check out autossh to keep your connection up all the time:
http://www.harding.motd.ca/autossh/

ghans

I have a server with public IP hosted by AWS. Now I have been able to connect to my PI (running wirh a 3g dongle) through the server using reverse ssh. I followed the guide, http://jerrygamblin.com/2016/04/23/pers ... spberrypi/

Now, there is a video stream running on my pi (motion) on the port 8081 (mypiipaddress:8081). Can you please help me on how to forward this stream onto my server with public IP so that I can view the stream on any browser by typing :portno

punktea · Mon Sep 26, 2016 6:35 pm

If you re-phrase your question to "live video streaming on your website" or "embed live video in your webpage" you will get a lot more leads. Essentially you need to subscribe to a video broadcasting service (like ipcamlive.com) then make your Pi feed a video stream to that service then embed required HTML snippet on your website. To configure Pi to stream video, search for "raspberry pi rtsp streaming" and you will see various implementations. I also found this link in raspberry pi forum viewtopic.php?f=43&t=132503

thebeachtoday · Tue Feb 27, 2018 1:28 pm

In case anyone needs this...two things: Cloud-based web server, I use AWS EC2, that runs a web server [Apache in my case] and has two virtual hosts - one for the web and one for the stream. These are very basic, do not overthink it. Remember to reload the webserver after creating the virtual host files:

Code: Select all


ServerName webserver.somedomain.com
ProxyPreserveHost On

Order allow,deny
Allow from all

ProxyPass / http://localhost:10100/
ProxyPassReverse / http://localhost:10100/


ServerName livestream.somedomain.com
ProxyPreserveHost On

Order allow,deny
Allow from all

ProxyPass / http://localhost:10101/
ProxyPassReverse / http://localhost:10101/

On the RPi, set up autossh. I run it as a service and use ExecStart to point to this simple bash script that sets up tunnels to both the web and live stream:

Code: Select all

/usr/bin/autossh -N -q -o "ExitOnForwardFailure yes" -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" -o "StrictHostKeyChecking=no" -N -i /etc/cloud_server_secure_key_file.pem  ubuntu@ec2-XX-YY-ZZ-00.compute-1.amazonaws.com -g -R ec2-XX-YY-ZZ-00.compute-1.amazonaws.com:10100:127.0.0.1:80 &
/usr/bin/autossh -N -q -o "ExitOnForwardFailure yes" -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" -o "StrictHostKeyChecking=no" -N -i /etc/cloud_server_secure_key_file.pem  ubuntu@ec2-XX-YY-ZZ-00.compute-1.amazonaws.com -g -R ec2-XX-YY-ZZ-00.compute-1.amazonaws.com:10101:127.0.0.1:8080 &

To call the stream in HTML file, use the tag with the src as livestream.somedomain.com/stream.

You will want to tinker with /etc/uv4l/uv4l-raspicam.conf to get the best settings - standard live stream settings, nothing specific to RPi or UV4L

SlowBro · Wed Mar 21, 2018 12:08 am

A down side of SSH port forwarding: If someone were to hack the web server (not unthinkable) they would then be able to reach into your home network. They would have to then hack the IP camera but that's definitely not difficult these days; many of them don't get new firmwares. Typically they have a telnet port (!) open and are running Linux. Once in the IP camera they have your entire network.

I'm looking into RTMP myself, I think that's the best solution.

ghans · Wed Mar 21, 2018 6:01 am

Reverse SSH does not need port forwarding. That's why it is so attractive. Together with SSH keys it is raher secure.

ghans

SlowBro · Wed Mar 21, 2018 5:14 pm

Yes but I am not talking about firewall port forwarding. I’m talking about what is being recommended here. If someone gains access into the server on the outside of your home network where reverse forwarding is being sent to, they can reach into your network via the reverse port, is my point. It just takes a vulnerability to your camera and they’re in.

This is more secure than firewall port forwarding, but not much.

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