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From: Ulrich Mueller <ulm@kph.uni-mainz.de>
To: "Juanma Barranquero" <lekktu@gmail.com>
Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
Subject: Re: error in server-running-p on M$
Date: Sat, 22 Nov 2008 15:29:31 +0100	[thread overview]
Message-ID: <18728.5963.672940.47287@a1ihome1.kph.uni-mainz.de> (raw)
In-Reply-To: <f7ccd24b0811220617g7c71dc0drdc61332d1a9a6fda@mail.gmail.com>

>>>>> On Sat, 22 Nov 2008, Juanma Barranquero wrote:

>> Shouldn't it try to actually connect to the socket (in the
>> server-use-tcp case), to find out if the server is functional?
>> That would also be consistent with the behaviour for local sockets.

> The idea is to run a simple test, that does not have the risk of
> incurring in a timeout.

This doesn't catch all cases. For example, the server process could be
running on a remote machine, with the port tunnelled over ssh.

> Also, if the server authentication file says that Emacs process PID is
> using port P, and there's really an Emacs of pid PID but it is no
> longer answering to requests on port P, that is PID's problem, not the
> current instance's.

I think that the false positives are not the problem, but the false
negatives (i.e. port is in use, but server-running-p returns nil) are.

Ulrich




  reply	other threads:[~2008-11-22 14:29 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-22 11:44 error in server-running-p on M$ dhruva
2008-11-22 11:58 ` Juanma Barranquero
2008-11-22 12:51   ` Eli Zaretskii
2008-11-22 13:00     ` Juanma Barranquero
2008-11-22 13:20       ` Eli Zaretskii
2008-11-22 13:37         ` Juanma Barranquero
2008-11-22 13:53           ` Eli Zaretskii
2008-11-22 14:13             ` Ulrich Mueller
2008-11-22 14:17               ` Juanma Barranquero
2008-11-22 14:29                 ` Ulrich Mueller [this message]
2008-11-22 14:36                   ` Juanma Barranquero
2008-11-22 15:35                     ` Ulrich Mueller
2008-11-22 16:04                       ` Juanma Barranquero
2008-11-22 16:52                         ` Ulrich Mueller
2008-11-22 21:47                           ` Juanma Barranquero
2008-11-23  3:56                             ` dhruva
2008-11-23  3:59                               ` Juanma Barranquero
2008-11-23  4:01                                 ` dhruva
2008-11-23  4:03                                   ` Juanma Barranquero
2008-11-23  4:10                                     ` dhruva
2008-11-23  4:15                                       ` Juanma Barranquero
2008-11-23  4:17                                         ` dhruva
2008-11-23  4:19                                           ` Juanma Barranquero
2008-11-23  8:14                                             ` Server protocol (was: Re: error in server-running-p on M$) Ulrich Mueller
2008-11-23 11:33                                               ` Juanma Barranquero
2008-11-23 16:33                                                 ` dhruva
2008-11-23 17:48                                                   ` Juanma Barranquero
2008-11-23  4:02                 ` error in server-running-p on M$ Stefan Monnier
2008-11-23  4:10                   ` Juanma Barranquero
2008-11-23  5:21                     ` Stefan Monnier
2008-11-23  5:32                       ` Juanma Barranquero
2008-11-23  5:57                         ` Stefan Monnier
2008-11-23 11:26                           ` Juanma Barranquero
2008-11-23 12:46                             ` Juanma Barranquero
2008-11-23 13:13                               ` Ulrich Mueller
2008-11-24  2:55                               ` Stefan Monnier
2008-11-24 14:46                                 ` Juanma Barranquero
2008-11-24 15:10                                   ` Ulrich Mueller
2008-11-24 15:16                                     ` Juanma Barranquero
2008-11-24 15:34                                       ` Ulrich Mueller
2008-11-24 15:45                                         ` Juanma Barranquero
2008-12-09 20:46                                   ` Stefan Monnier
2008-12-10  7:05                                     ` Chetan Pandya
2008-12-10 12:59                                     ` Juanma Barranquero
2008-12-10 18:30                                       ` Stefan Monnier
2008-12-10 18:47                                         ` Juanma Barranquero
2008-12-11  2:07                                           ` Stefan Monnier
2008-12-11 16:30                                             ` Juanma Barranquero
2008-12-11 18:47                                               ` Stefan Monnier
2008-12-12  0:40                                                 ` Juanma Barranquero
2008-12-12  4:51                                                   ` Stefan Monnier
2008-12-12  8:19                                                     ` Juanma Barranquero
2008-12-12 18:49                                                       ` Stefan Monnier
2008-12-12 20:20                                                         ` Juanma Barranquero
2008-11-23  3:58               ` Stefan Monnier
2008-11-23  3:59           ` Stefan Monnier
2008-11-23  4:12             ` Juanma Barranquero
2008-11-23  5:19               ` Stefan Monnier

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