Introduce IOException subclass for ECONNRESET

[Langer, Christoph]

Hi,

I think I would also support replacing sun.net.ConnectionResetException with a publicly available java.net.ConnectionResetException that subclasses java.net.SocketException. But, as Chris mentions. a usage example would be helpful.

Best regards
Christoph

> -----Original Message-----
> From: net-dev [mailto:net-dev-bounces at openjdk.java.net] On Behalf Of Chris
> Hegarty
> Sent: Montag, 12. September 2016 17:07
> To: Florian Weimer <fweimer at redhat.com>; Norman Maurer
> <norman.maurer at googlemail.com>; net-dev at openjdk.java.net
> Subject: Re: Introduce IOException subclass for ECONNRESET
> 
> On 12/09/16 14:50, Florian Weimer wrote:
> > On 08/23/2016 09:40 AM, Norman Maurer wrote:
> >> Hi all,
> >>
> >> I first asked this on nio-dev[0] but was asked to move this over to here:
> >>
> >> I wonder if it would be possible to add a new IOException sub-class
> >> for ECONNRESET. Often you receive these errors if a remote peer closed
> >> the connection and you try to read from it while using NIO. This is
> >> very often not really something that concerns people and can just be
> >> handled the same as a “normal close”.
> 
> So what are the other cases, where ECONNRESET may occur? What is
> equivalent on non-Unix platforms, Windows for example?
> 
>  >> At the moment the only way to
> >> detect this is to inspect the IOException message which is really
> >> hacky.
> 
> Do you have examples of code that does this today?
> 
> >> I wonder if we could not add a special IOException sub-class
> >> for this. Something like:
> >>
> >> ConnectionResetException extends IOException {
> >> }
> >
> > Shouldn't it be a subclass of SocketException?
> 
> I think it would have to be a subclass of SocketException too, for
> compatibility at least, since that is the type that is thrown
> today.
> 
> sun.net.ConnectionResetException exists today, but I don't think
> that it ever finds its way outside of the implementation. And is
> of course not part of Java SE.
> 
> -Chris.
>