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Posted to dev@hc.apache.org by "Asankha C. Perera (JIRA)" <ji...@apache.org> on 2007/01/12 19:25:27 UTC
[jira] Updated: (HTTPCORE-23) Threading issue with NIO extensions
for client side code
[ https://issues.apache.org/jira/browse/HTTPCORE-23?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Asankha C. Perera updated HTTPCORE-23:
--------------------------------------
Attachment: nio_patch_1.patch
> Threading issue with NIO extensions for client side code
> --------------------------------------------------------
>
> Key: HTTPCORE-23
> URL: https://issues.apache.org/jira/browse/HTTPCORE-23
> Project: HttpComponents Core
> Issue Type: Bug
> Components: HttpCore NIO
> Affects Versions: 4.0-alpha3
> Reporter: Asankha C. Perera
> Attachments: nio_patch_1.patch
>
>
> I would like to write a non-blocking client based on the NIO extensions, but encounter an issue, which could be reproduced with a modified NHttpClient example code as follows:
> I want to start off a ConnectingIOReactor, and leave it running continuously. Now, whenever I want to send a request through this reactor, I would want to execute something like
> ioReactor.connect(
> new InetSocketAddress("www.yahoo.com", 80),
> null,
> new HttpHost("www.yahoo.com"));
> However, if I execute the above before I execute ioReactor.execute(ioEventDispatch), i.e position 1, then everything works fine. If I try it after (i.e. position 2) the outcome is unpredictable - i.e. works sometimes, NPE, etc..
> It is not clear to me why connecting to the reactor after its execute() method is invoked should be any different..?
> public static void main(String[] args) throws Exception {
> HttpParams params = new DefaultHttpParams(null);
> .....
> NHttpClientHandler handler = new MyNHttpClientHandler(params);
> final IOEventDispatch ioEventDispatch = new DefaultClientIOEventDispatch(handler, params);
> // position 1 Thread t = new Thread(new Runnable() {
> public void run() {
> try {
> ioReactor.execute(ioEventDispatch);
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
> }
> );
> t.start();
> // position 2
> }
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