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From "Brian LeRoux (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-107) Possible socket leaking in CallbackServer
Date Thu, 08 Dec 2011 07:51:43 GMT

    [ https://issues.apache.org/jira/browse/CB-107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13165074#comment-13165074
] 

Brian LeRoux commented on CB-107:
---------------------------------

Appears error thrown on 2787 is valid, file still open for writing. [1] For fun, I cranked
it up to try writing every millisecond. Still works.

[1] https://github.com/callback/callback-android/blob/master/framework/assets/js/file.js#L480-482
                
> Possible socket leaking in CallbackServer
> -----------------------------------------
>
>                 Key: CB-107
>                 URL: https://issues.apache.org/jira/browse/CB-107
>             Project: Apache Callback
>          Issue Type: Bug
>          Components: Android
>    Affects Versions: 1.2.0
>            Reporter: Simon MacDonald
>            Priority: Critical
>
> I think we may be leaking a socket in CallbackServer. On line 216 of the CallbackServer
we create a new Socket but I can't see anywhere in CallbackServer where the Socket is closed.
Over time this could cause the problem described below. The user is probably running into
it much sooner than usual as he's making a file write every second.
> Here is the original bug report from the Google Groups:
> I'm trying to write approx every second to a file. This for writing a
> geolocation to this file.
> So I make a filewriter when I start tracking, then start a
> watchposition en in the successfunction I write to this file.
> In my first tests everything went well, but with some more intensive
> testing we found out that after more than 900 points (or
> filewritervar.write() callings) the app fails. In the logcat the next
> error is vissible:
> [code]
> W/System.err(27919): java.net.SocketException: Too many open files
> W/System.err(27919):    at
> org.apache.harmony.luni.platform.OSNetworkSystem.acceptSocketImpl(Native
> Method)
> W/System.err(27919):    at
> org.apache.harmony.luni.platform.OSNetworkSystem.accept(OSNetworkSystem.java:
> 69)
> W/System.err(27919):    at
> org.apache.harmony.luni.net.PlainSocketImpl.accept(PlainSocketImpl.java:
> 126)
> W/System.err(27919):    at
> java.net.ServerSocket.implAccept(ServerSocket.java:281)
> W/System.err(27919):    at
> java.net.ServerSocket.accept(ServerSocket.java:165)
> W/System.err(27919):    at
> com.phonegap.CallbackServer.run(CallbackServer.java:216)
> W/System.err(27919):    at java.lang.Thread.run(Thread.java:1102)
> [/code]
> I looked in the FileUtils.java file and the filestream is everytime
> correctly closed, so I dont see the problem.

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