I'm looking to "POST" a large amount of data (image) to a PHP file (obviously to create an exported image), but when using SendAndLoad, accompanied with a setInterval to check if there is a response, if the image is too large I get a timeout.

This works fine if I use a small image (200x200), but anything bigger and I get a timeout error, OR if the user has a slow connection, again, timeout error.

Is there a way to increase this timeout so that flash will wait longer for a response from the server? I'm also using an RLE (run length encoding) that I wrote to capture white space to save on space, but again, same problem if the image is too large.

Current Code I'm using:

function sendData()
{ //note: there is another function that gets all the pixels of the MC
// but is not needed
var output:LoadVars = new LoadVars();
// set the output of "img" to the captured pixels
output.img = pixels.toString();
output.height = h;
output.width = w;
// send the output
output.sendAndLoad("http://www.mysite.com/show.php", result_lv, "POST");

checkResultIntervalID = _global.setInterval( this, "checkResult", 5000 );

}

function checkResult()
{
// wait for server response
if (result_lv.toString() == "")
{
imgtag.text = "Waiting for Server...";
}
// trace the result from php and clear the check
else
{
trace(result_lv.toString());
clearInterval(checkResultIntervalID);
}
}

The PHP presents a very versatile and user friendly interface for handling file uploads, the default installation is not geared for working with files in excess of 2 Mega Bytes. This post help you configure your PHP engine for handling such large file transfers.

You can call the phpinfo() function to find the location of your php.ini file, it will also tell you the current values for the following settings that we need to modify

file_uploads
upload_max_filesize
max_input_time
memory_limit
max_execution_time
post_max_size

The first one is fairly obvious if you set this off, uploading is disabled for your installation.

According to the PHP documentation you can set a MAX_UPLOAD_LIMIT in your HTML form to suggest a limit to the browser.

memory_limit
When the PHP engine is handling an incoming POST it needs to keep some of the incoming data in memory. This directive has any effect only if you have used the --enable-memory-limit option at configuration time. Setting too high a value can be very dangerous because if several uploads are being handled concurrently all available memory will be used up and other unrelated scripts that consume a lot of memory might effect the whole server as well.

max_execution_time and max_input_time
These settings define the maximum life time of the script and the time that the script should spend in accepting input. If several mega bytes of data are being transfered max_input_time should be reasonably high. You can override the setting in the ini file for max_input_time by calling the set_time_limit() function in your scripts.

I think by setting the above said variables in php config file can help you to upload large files.

thanks

__________________
Karpagarajan. R
Necessity is the mother of invention

hi
one suggestion to monitor the progress & result of the uploading


don't use interval concept, better use event listener for your LoadVars

use onProgress event to show a progress bar while it uploads the data
use onComplete event to continue further after the success full upload.

__________________
SeeSamJagan
- Sky is not the "LIMIT", Death is not the END, There is still something beyond....