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  1. #1
    Registered User
    Join Date
    May 2003
    Posts
    9

    Global root overflow

    Hello, everyone!

    I am trying to build a networking midlet, and I am using HttpConnection to transfer data to and from the server. I have to open a new HttpConnection everytime i need to send data to or get data from the server. The data transmission part now works, but the midlet is not stable, and it always ends up with a "Global root overflow" exception. Anyone has any idea about this exception?

    I have searched the web and the only one result I got is that:

    "Global root overflow" means that the native code is registering too many "permanent references" with the garbage collector. Try reusing the connection, allocation of connection-specific data (like socket descriptor etc) might be "leaking".

    Well, I think I can't "reuse" the connection, because as I tested out on the phone (Nokia 6610, not the emulator), there is no way I can use persistent connection, nor chunked HTTP. Seems like one of the bugs in the Nokia HTTP implementation.

    Any comment are welcomed.

  2. #2
    Regular Contributor
    Join Date
    Mar 2003
    Posts
    112
    well well well who knows?

    keep in mind to close all connection (http, input streams, output streams)

    and close the streams first before you close the connection.

    midp behaves really strange in the order of commands...

  3. #3
    Nokia Developer Expert
    Join Date
    Mar 2003
    Posts
    382
    Hello

    MIDlet using Http connection causes sometimes
    "global root overflow" error message.

    In the software versions before January 2003 there was an error where the HTTP API could cause a global root overflow.
    Since January 2003 problem was fixed (7210) and does not accur with these later SW versions.

    The global root overflow only occurs if a lot of HTTP requests are made and there is no data in the response,
    so the simple solution is to ensure that the problem does not occur on any build is to make sure each
    HTTP response does contain some body data, the MIDlet can read and discard this if none is expected.

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