Very Computer

by **SongCom** » Sat, 19 Aug 2000 04:00:00

Hi.

I got a problem same as Mr. Verbruggen.

Is there any way to detect a disconnected socket with no sending?
I want to close the socket if a client disconnects.
But I can getpeername() and I can get rtt even if a connection is closed..

Any techniques please..

by **David Schwart** » Sat, 19 Aug 2000 04:00:00

> Hi.

> I got a problem same as Mr. Verbruggen.

> Is there any way to detect a disconnected socket with no sending?
> I want to close the socket if a client disconnects.
> But I can getpeername() and I can get rtt even if a connection is closed..

> Any techniques please..

A dicsconnected socket will return an error on a call to recv. But you
can also use 'poll', if it's supported.

DS

by **David Schwart** » Sat, 19 Aug 2000 04:00:00

> Someone else already suggested poll. But let me add that maybe you're
> thinking about it the wrong way, in not wanting to use send. If you need
> to send something, do so. If that fails, close the connection. If you
> feel you need to read, do so. If you get eof, close. There wis hardly
> ever any real need to use poll.

I presume you mean there is hardly any real need to use poll just to
detect a broken connection. There are plenty of cases where you really
need poll.

DS

by **Martien Verbrugg** » Sun, 20 Aug 2000 09:49:16

On Fri, 18 Aug 2000 18:18:33 GMT,

Quote:> Hi.

> I got a problem same as Mr. Verbruggen.

Are you referring to this Mr. Verbruggen? Because I can't recall ever
having had the problem you describe :) I think you'll find that I
supplied an answer in that thread, not the question.

Quote:> Is there any way to detect a disconnected socket with no sending?

Someone else already suggested poll. But let me add that maybe you're
thinking about it the wrong way, in not wanting to use send. If you need
to send something, do so. If that fails, close the connection. If you
feel you need to read, do so. If you get eof, close. There wis hardly
ever any real need to use poll.

Martien
--
Martien Verbruggen |
Interactive Media Division | Useful Statistic: 75% of the people
Commercial Dynamics Pty. Ltd. | make up 3/4 of the population.
NSW, Australia |

by **SongCom** » Sun, 20 Aug 2000 11:27:07

> On Fri, 18 Aug 2000 18:18:33 GMT,

> > Hi.

> > I got a problem same as Mr. Verbruggen.

> Are you referring to this Mr. Verbruggen? Because I can't recall ever
> having had the problem you describe :) I think you'll find that I
> supplied an answer in that thread, not the question.

> > Is there any way to detect a disconnected socket with no sending?

Ah.. Right. I meant you. I was confused.. Sorry..
Anyway, thank you.

-F.T.

by **Martien Verbrugg** » Sun, 20 Aug 2000 04:00:00

On Fri, 18 Aug 2000 18:25:54 -0700,

> > Someone else already suggested poll. But let me add that maybe you're
> > thinking about it the wrong way, in not wanting to use send. If you need
> > to send something, do so. If that fails, close the connection. If you
> > feel you need to read, do so. If you get eof, close. There wis hardly
> > ever any real need to use poll.

> I presume you mean there is hardly any real need to use poll just to
> detect a broken connection.

That's exactly what I meant. And I see that I wasn't really clear about
that.

Quote:> There are plenty of cases where you really
> need poll.

Indeed.

Martien
--
Martien Verbruggen |
Interactive Media Division | That's not a lie, it's a
Commercial Dynamics Pty. Ltd. | terminological inexactitude.
NSW, Australia |

Very Computer

Detecting a disconnected socket..

Detecting a disconnected socket..

Detecting a disconnected socket..

Detecting a disconnected socket..

Detecting a disconnected socket..

Detecting a disconnected socket..

Detecting a disconnected socket..