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From "Emmanuel Lecharny (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DIRMINA-777) IoSessionConfig.setUseReadOperation(true) doesn't seem to work
Date Wed, 12 Jan 2011 15:08:45 GMT

    [ https://issues.apache.org/jira/browse/DIRMINA-777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12980743#action_12980743

Emmanuel Lecharny commented on DIRMINA-777:

It will be closed if we consider that it's a real issue, or if we consider this is not. Still
to be evaluated, as I don't have an Android device to test the issue, and as I don't have
the full code of the client and server to reproduce it.

> IoSessionConfig.setUseReadOperation(true) doesn't seem to work
> --------------------------------------------------------------
>                 Key: DIRMINA-777
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-777
>             Project: MINA
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.0.0-RC1
>         Environment: Mac OS X 10.6.2, Java 1.6, Android SDK
>            Reporter: Matt Huggins
>            Priority: Blocker
>             Fix For: 2.0.3
> I'm attempting to perform a synchronous write/read in a demux-based client application
with MINA 2.0 RC1, but it seems to get stuck. Here is my code:
> {code}
> public boolean login(final String username, final String password) {
>     // block inbound messages
>     session.getConfig().setUseReadOperation(true);
>     // send the login request
>     final LoginRequest loginRequest = new LoginRequest(username, password);
>     final WriteFuture writeFuture = session.write(loginRequest);
>     writeFuture.awaitUninterruptibly();
>     if (writeFuture.getException() != null) {
>         session.getConfig().setUseReadOperation(false);
>         return false;
>     }
>     // retrieve the login response
>     final ReadFuture readFuture = session.read();
>     readFuture.awaitUninterruptibly();
>     if (readFuture.getException() != null) {
>         session.getConfig().setUseReadOperation(false);
>         return false;
>     }
>     // stop blocking inbound messages
>     session.getConfig().setUseReadOperation(false);
>     // determine if the login info provided was valid
>     final LoginResponse loginResponse = (LoginResponse)readFuture.getMessage();
>     return loginResponse.getSuccess();
> }
> {code}
> I can see on the server side that the LoginRequest object is retrieved, and a LoginResponse
message is sent. On the client side, the DemuxingProtocolCodecFactory receives the response,
but after throwing in some logging, I can see that the client gets stuck on the call to `readFuture.awaitUninterruptibly()
> I can't for the life of me figure out why it is stuck here based upon my own code. I
properly set the read operation to true on the session config, meaning that messages should
be blocked. However, it seems as if the message no longer exists by time I try to read response
messages synchronously.

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