So in short the answer is no – you should start the socketserver before scanning the port.

Also being able to scan the port doesn´t necessarily mean that your socketserver is working.

If executing the sandbox.php doesn´t throw
unable to bind address [98]: Address already in use…
or any other error you can be fairly sure that the sever is up and running and the port isn´t already occupied by another service.

But if it doesn´t reply to the portscan, the port is most likely being blocked by a firewall.

In that case you can try your luck and use another port – the last option is to ask media temple to open 843 or if you should use another one and which.

if that is true then media temple does block that port and I will have to find another one I can use. Or maybe it’s that I have to have the socket server running correctly?

If it is open, you can insert echo $pfile; after line 36 and echo $message; at line 48 of the sandbox.php, to print to the console what (and if) the socketserver and your flashclient are exchanging.

Nearly forgot to mention this – in order to see the output, you have to start the sandbox.php without nohub: #php sandbox.php.
Also don´t forget to always kill the process of the already running one before you (re)start the socketserver.

And last but not least – please make sure, that the crossdomain.xml resides at the same folder as the sandbox.php and holds the correct domain/ip.

I did set the vars for host and I left the port to 843. What could I do to test if that is working right?

//System.security.allowDomain(“*”); //if you are going across domains
System.security.loadPolicyFile(“xmlsocket://”+your_ip”+”:”+your_port);

How did you go about setting that in the MJPEG.as file?

did you modify the variable $host in line 11 of the sandbox.php?

Maybe you should check back with the folks at media temple and ask them if you are allowed to open ports/that specific port as this is often the issue.

If they tell you that you have to use a port other than 843 – no problem…
Just change line 12 of the sandbox.php and don´t forget to tell flash where to send the request to ( via loadPolicyFile() ).

Hope this was of any help and wish you good luck with whatever intersting stuff you are working on

- Josh C

???

Josh´s class needs the IP as first param, followed by the file/script to query and the port to open a socket on for this connection.

In my code this looks as follows:

motion = new MJPEG(“filerack.de”, “/as3/sp_tracking/proxy.php”, 80);

And please note that you have to rename the proxy.phps to *.php so your webserver will execute it instead of opening it as a syntax highlighted view.

Within this file setup your connection to your webcam and there you go

You should be able to get a connection if you test your flashfile local from within your IDE.

To make this run on a webserver you need to setup and execute the socketserver mentioned in the previous comments.

Good luck!

//”192.168.101.51″ host of axis ip cam

var test:MJPEG = new MJPEG(“192.168.101.51″, “/axis-cgi/mjpg/video.cgi”, 80, “root”, “root”);
, i don’t undurstood exactly, to use this class in remote connection,I must replace “192.168.101.52″ to “proxy.phps” showed in the 2° post ? My question is , can you give me an example How can i integrate exactly MJPEG class to use in a online web application?

Please feel free to contact me via mail if you need further help.

I will elaborate why a socket server is necessary as this information might be interesting for other readers too:

MJPEG streams are transferred via HTTP but handled a bit different than a normal image-download as they have another mime-type which basically tells the browser to keep the TCP connection open and to expect a continuous feed of new data (images).

With flash you have to open your own TCP connection to the stream, keep it alive and cut the incoming data into images.

That’s basically what Doug´s/Josh´s class does for you.

But as I wrote on my first comment…
Due to the flash players sandbox security policy, every time you try to open a socket-connection, flash query’s the port 843 on that url and expects that a crossdomain policy file is returned and allows the desired connection.

This is intended to prevent you from opening socket connections to services that you don´t own.

So you HAVE to run a socket server that listens on that query and returns the crossdomain file.

This service has to run on your server as an application – you could write it in C/Java/Pearl/Python… – or as I did in PHP.
Using the PHP CLI (Command Line Interface) SAPI you can run PHP scripts from your servers console (via telnet or SSH) – not as an on-demand script but as a program.

So you also need to have access to your servers console.

Executing the PHP socket server as a background task on linux will look something like this:

#nohup php -q sandbox.php &

Cheers!

Is that ok I contact you here for help or should I better email you? I need a bit more help to make it done. I am good in as3, but not so good in PHP. What means “php socket server that you will have to launch from your servers console” from your last post?

Thanks a lot again!

yes, it´s possible but you will need Josh´s streaming class, a php-proxy that fetches the feed (assuming that it doesn´t originate from your own server) and a php socket server that you will have to launch from your servers console.

You can find the link to the MJPEG streaming class within the post and I wrote a quick howto to the proxy and socketserver including script examples within the second comment.