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From "Gregor Gabriel (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-2787) PhoneGap FileTransfer.Download more than 300 files
Date Fri, 07 Jun 2013 15:52:20 GMT

    [ https://issues.apache.org/jira/browse/CB-2787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13678106#comment-13678106
] 

Gregor Gabriel commented on CB-2787:
------------------------------------

I have the same problem.

<code>

06-07 16:18:29.533: D/FileTransfer(6548): download https://elearning-mobile.de.tuv.com:443/content/ada/ada06/ada06q01-6/sounds/26B73D46-072B-43AB-ADFB-31ECBA18A975.mp3
to file:///storage/emulated/0/content/https/elearning-mobile.de.tuv.com443/content/ada/ada06/ada06q01-6/sounds/26B73D46-072B-43AB-ADFB-31ECBA18A975.mp3
06-07 16:18:29.603: D/FileTransfer(6548): Download file:https://elearning-mobile.de.tuv.com:443/content/ada/ada06/ada06q01-6/sounds/26B73D46-072B-43AB-ADFB-31ECBA18A975.mp3
06-07 16:18:29.643: E/FileTransfer(6548): {"target":"file:\/\/\/storage\/emulated\/0\/content\/https\/elearning-mobile.de.tuv.com443\/content\/ada\/ada06\/ada06q01-6\/sounds\/26B73D46-072B-43AB-ADFB-31ECBA18A975.mp3","source":"https:\/\/elearning-mobile.de.tuv.com:443\/content\/ada\/ada06\/ada06q01-6\/sounds\/26B73D46-072B-43AB-ADFB-31ECBA18A975.mp3","http_status":200,"code":1}
06-07 16:18:29.643: E/FileTransfer(6548): java.io.FileNotFoundException: /storage/emulated/0/content/https/elearning-mobile.de.tuv.com443/content/ada/ada06/ada06q01-6/sounds/26B73D46-072B-43AB-ADFB-31ECBA18A975.mp3:
open failed: EMFILE (Too many open files)
06-07 16:18:29.643: E/FileTransfer(6548): 	at libcore.io.IoBridge.open(IoBridge.java:416)
06-07 16:18:29.643: E/FileTransfer(6548): 	at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
06-07 16:18:29.643: E/FileTransfer(6548): 	at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
06-07 16:18:29.643: E/FileTransfer(6548): 	at org.apache.cordova.FileTransfer$4.run(FileTransfer.java:808)
06-07 16:18:29.643: E/FileTransfer(6548): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-07 16:18:29.643: E/FileTransfer(6548): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-07 16:18:29.643: E/FileTransfer(6548): 	at java.lang.Thread.run(Thread.java:856)
06-07 16:18:29.643: E/FileTransfer(6548): Caused by: libcore.io.ErrnoException: open failed:
EMFILE (Too many open files)
06-07 16:18:29.643: E/FileTransfer(6548): 	at libcore.io.Posix.open(Native Method)
06-07 16:18:29.643: E/FileTransfer(6548): 	at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
06-07 16:18:29.643: E/FileTransfer(6548): 	at libcore.io.IoBridge.open(IoBridge.java:400)
06-07 16:18:29.643: E/FileTransfer(6548): 	... 6 more

<code>

I use cordova 2.7 (same effect with cordova 2.2)
My app worked fine on Android 2.3, 3.x
With Android 4.0 I got this issue, but using a timeout of 1 millisecond solved my problem.
This workaround also worked for Android 4.1.x.

But now with Android 4.2.2 (Nexus 7) I can't get rid of this problem, even with bigget timeouts

My code looks like this:

<code>
var urls=['http://foo', ..., 'http://bar'];

var loader = new FileTransfer();

function loader(){
	var url = window.urls.pop();

	if(url === undefined) return;

	window.loader.download(
		url,
		window.getAbsoluteFileNameForUrl(url),
		function(e){setTimeout(loader,100)},
		function(e){setTimeout(loader,100)}
	);
}

<code>

                
> PhoneGap FileTransfer.Download more than 300 files
> --------------------------------------------------
>
>                 Key: CB-2787
>                 URL: https://issues.apache.org/jira/browse/CB-2787
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: Android
>    Affects Versions: 2.5.0
>            Reporter: Cho
>            Assignee: Ian Clelland
>
> I had tried to download more than 300 files and then it hit error after that. Seems like
some IO Connection was not properly closed. I wrote a small code to test it out. 
> Any idea? How to file a report or get a source of phonegap to check the real cause?
> {code}
> var counter = 500;
> function DownloadFile() {
>         if (counter == 0) {
>             DownloadComplete();
>             return;
>         }
>         var ft = new FileTransfer();
>         var downloadUrl = "<source>";
>         var dlPath = "<target>"
>         ft.download(downloadUrl, dlPath, function(entry) {
>             counter--;
>             UpdateProgress();
>             DownloadFile();
>         }, function(error) {
>             DownloadFailed();
>         }, true);
>     }
> {code}
> note: <target> and <source> is alright because it was it failed when the
counter goes until 300+.
> {code}
> 03-14 08:35:09.706: E/FileTransfer(24867): {"target":"<target>","source":"<source>","http_status":200,"code":1}
> 03-14 08:35:09.706: E/FileTransfer(24867): java.io.FileNotFoundException: <source>:
open failed: EMFILE (Too many open files)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.IoBridge.open(IoBridge.java:416)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.io.FileOutputStream.<init>(FileOutputStream.java:88)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.io.FileOutputStream.<init>(FileOutputStream.java:73)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at org.apache.cordova.FileTransfer$4.run(FileTransfer.java:685)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at java.lang.Thread.run(Thread.java:856)
> 03-14 08:35:09.706: E/FileTransfer(24867): Caused by: libcore.io.ErrnoException: open
failed: EMFILE (Too many open files)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.Posix.open(Native Method)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
> 03-14 08:35:09.706: E/FileTransfer(24867):     at libcore.io.IoBridge.open(IoBridge.java:400)
> 03-14 08:35:09.706: E/FileTransfer(24867):     ... 6 more
> {code}

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