Grabbing content on a port other than 80?

davemuk

Forgive me if I've posted this in the wrong place. I've been using the following script to grab images for sometime. Recently I've changed the ports my webcams output using and needed to be able to grab their output from another page (as my company won't allow access on any other port than 80). I know I'm probably doing this totally wrong..

function GrabImage($url,$filename="") { 
  if($url==""):return false;endif; 

  if($filename=="") { 
    $ext=strrchr($url,"."); 
    if($ext!=".gif" && $ext!=".jpg"):return false;endif;
    $filename="camimage.jpg";
  } 

  ob_start(); 
  readfile($url); 
  $img = ob_get_contents(); 
  ob_end_clean(); 
  $size = strlen($img); 

  $fp2=@fopen("/pathtodirectory/$filename", "w"); 
  fwrite($fp2,$img); 
  fclose($fp2); 

  return $filename; 
} 

$img=GrabImage("http://myaddress:1030/jpg/fullsize.jpg",""); 
if($img):echo 'Success';else:echo "Failed";endif;

Any advice would be much appreciated, I'm guessing I need to 'open' the port a different way, but I'm having little luck with it

_theworks

Uhhh.. if im correct..(which im probably not),
Http requests are made though port 80 and only port 80. though, couldnt you get the files via ftp?

Weedpacket

Well, theoretically an http request could be made on any port (8080 seems to be the traditional alternate), as long as the http server is configured to listen on that port, and the firewall is prepared to allow traffic through it. Of course, the software making the request has to use the right port as well....

But if this is what you're using now:

$img=GrabImage("http://myaddress:1030/jpg/fullsize.jpg","");

and it won't work because you now need to use port 80 instead of port 1030 ..... guess what change needs to be made.

davemuk

Nope, I need to access port 1030 as this is what I have my image outputting on, from my application running on this port.

The script works perfectly well if I have something on a standard port 80 - which I don't need to specify in the code. But I've since change the ports on which my applications run on and need to gain access to the same image (which worked perfect when I was running on port 80).

Essentially, if anyone knows how to adjust my coding to let PHP access on any port (as specified within the code), please let me know as I'm losing hair 🙁

jazz_snob

davemuk,

I just tested your code on my own set up w/ image on port 13001 and it works fine 🙂

$img=GrabImage("http://192.168.0.3:13001/images/fish11.gif",""); 
if($img):echo 'Success';else:echo "Failed";endif;

I have virtual server running on port 13001 and of course port 80. Maybe add some debugging lines to find out where error is.

davemuk

When I try it I get "success", but then on checking the file that should be the image, it's just contains

Warning: readfile(http://myaddress:1030/jpg/fullsize.jpg): failed to open stream: Connection timed out in /pathtoscript/script.php on line 31

It can't be a firewall issue, as I've gaining access another way, via Google translate and that returns the page, so my port must be open to the outside world. I just can't figure why my script can't access it