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Posted to dev@hc.apache.org by "Gary Gregory (JIRA)" <ji...@apache.org> on 2018/03/09 15:41:00 UTC

[jira] [Resolved] (HTTPCORE-517) Allow SecurityManager to stop socket connections

     [ https://issues.apache.org/jira/browse/HTTPCORE-517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Gregory resolved HTTPCORE-517.
-----------------------------------
    Resolution: Fixed

Resolved in git {{master}} for the upcoming 5.0 and in 4.4.x for the upcoming 4.4.10.

> Allow SecurityManager to stop socket connections
> ------------------------------------------------
>
>                 Key: HTTPCORE-517
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-517
>             Project: HttpComponents HttpCore
>          Issue Type: Improvement
>          Components: HttpCore NIO
>            Reporter: Paul Thompson
>            Assignee: Gary Gregory
>            Priority: Major
>             Fix For: 4.4.10, 5.0-beta3
>
>
> Utilising a java security manager you're able to block certain socket connections from taking place. This can be useful to block outgoing connections for all components.
> {code:java}
> @Override
> public void checkConnect(String host, int port) {
>     if(port != -1) {
>         for (String bannedPerm : bannedSocketPerms) {
>             if (host.equalsIgnoreCase(bannedPerm)) {
>                 throw new new SecurityException();
>             }
>         }
>     }
> }{code}
> Unfortunately when doing this, the apache reactor shuts down. The call site is in the {{DefaultConnectingIOReactor}}. 
> {code:java}
> final boolean connected = socketChannel.connect(request.getRemoteAddress());
> {code}
> this line is wrapped in a try/catch that catches an {{IOException}}. This means the {{SecurityException}} is propagated out, and is never offered to be caught (even with the {{ExceptionHandler}} that you can set. 
> It would be an improvement to be able to throw these types of exceptions and have the reactor continue on. It's very understandable for the {{SecurityException}} to be a transient error and as such shouldn't shut down the entire reactor by default.
> Either that, or one should be able to define a {{handleRuntimeException}} (as seen in the {{BaseIOREactor}}) in such a way that it would get the option to handle the exceptions that are thrown as part of the {{processEvents}} call in the {{AbstractIOReactor}}



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