users@grizzly.java.net

Re: Checking if a connection is closed

From: Oleksiy Stashok <oleksiy.stashok_at_oracle.com>
Date: Mon, 16 Jun 2014 12:25:02 -0700

Hi Luis,

can you pls. share the code how you suspend the request processing?

Thank you.

WBR,
Alexey.

On 14.06.14 01:27, Luis Antunes wrote:
> Hi Alexey,
>
> Thanks for your reply. Basically, I want to support a
> subscribe-broadcast scenario. I am not interested in using WebSockets.
> This means I am keeping a reference to each Request and Response
> associated with each suspended client. The problem is that I don't
> know when to stop sending a broadcast to the suspended client. For
> that, I need to know if the suspended client is still connected. I
> hope this provides an idea of what I'm trying to do.
>
> Also, I have tried reading and writing things using the available IO
> facilities provided by the Request/Response objects, but these also do
> not seem to throw any kind of Exception if the client is disconnected.
>
> Thanks,
> Luis
>
>
>
>
> On Fri, Jun 13, 2014 at 5:57 PM, Oleksiy Stashok
> <oleksiy.stashok_at_oracle.com <mailto:oleksiy.stashok_at_oracle.com>> wrote:
>
> Hi Luis,
>
> unfortunately it might be related to OS or JDK socket implementation.
> The only reliable way to check the socket status is to try to read
> or write something.
>
> Can you pls. provide more details on your usecase, may be we'll be
> able to find a solution.
>
> Thanks.
>
> WBR,
> Alexey.
>
>
> On 13.06.14 14:37, Luis Antunes wrote:
>
> Hi,
>
> I'm implementing a Grizzly HttpHandler, and am wondering if
> there is any way to check if the client connection that
> originated the Request is still open, or if it has closed?
> I've tried obtaining the HttpRequestPacket from the Request,
> and checking if the Connection is open, but that seems to
> always return true, even if the client has disconnected.
>
> Any help would be much appreciated.
>
> Thanks!
> Luis
>
>
>