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From: William Xu <william.xwl@gmail.com>
Subject: Re: GDS does not support Emacs 23?
Date: Sun, 24 Sep 2006 19:56:49 +0800	[thread overview]
Message-ID: <87k63tjx4u.fsf@www.williamxu.com> (raw)
In-Reply-To: <87r6y2i72x.fsf@ossau.uklinux.net> (Neil Jerram's message of "Sat, 23 Sep 2006 22:52:38 +0100")

Neil Jerram <neil@ossau.uklinux.net> writes:

> That's interesting.  How can one call bind() so that it steals the
> address and port number from a previous listen socket?

Change socket from AF_INET to AF_UNIX does the trick. The following
patch seems to work fine. Now i can call gds-server from either Emacs
sessions. I only test it with gds-help-symbol, though. And there are
still some cleanups left to do, due to socket family change.

The patch, 

---------------------------------8<------------------------------------- 
xiaowei:~/studio/cvs/guile-debugging$ cvs diff
cvs server: Diffing .
cvs server: Diffing ice-9
cvs server: Diffing ice-9/debugging
cvs server: Diffing ossau
Index: ossau/gds-client.scm
===================================================================
RCS file: /cvs/guile-debugging/guile-debugging/ossau/gds-client.scm,v
retrieving revision 1.20
diff -r1.20 gds-client.scm
177,181c177,178
<               (let ((s (socket PF_INET SOCK_STREAM 0))
<                     (SOL_TCP 6)
<                     (TCP_NODELAY 1))
<                 (setsockopt s SOL_TCP TCP_NODELAY 1)
<                 (connect s AF_INET (inet-aton "127.0.0.1") 8333)
---
>               (let ((s (socket AF_UNIX SOCK_STREAM 0)))
>                 (connect s AF_UNIX "/tmp/.gds_socket")
Index: ossau/gds-server.scm
===================================================================
RCS file: /cvs/guile-debugging/guile-debugging/ossau/gds-server.scm,v
retrieving revision 1.4
diff -r1.4 gds-server.scm
9c9
< ;; 
---
> ;;
14c14
< ;; 
---
> ;;
40,45c40,46
< 
<   (let ((server (socket PF_INET SOCK_STREAM 0)))
< 
<     ;; Initialize server socket.
<     (setsockopt server SOL_SOCKET SO_REUSEADDR 1)
<     (bind server AF_INET INADDR_ANY port)
---
>   ;; Initialize server socket.
>   (let ((server (socket AF_UNIX SOCK_STREAM 0))
>         (path "/tmp/.gds_socket"))
>     (catch #t
>            (lambda () (delete-file path))
>            (lambda key #f))
>     (bind server AF_UNIX path)
70c71
< 	      (trc "client not found")))	
---
> 	      (trc "client not found")))
cvs server: Diffing ossau/debugging
---------------------------------8<------------------------------------- 

-- 
William

"Trust me.  I know what I'm doing."
		-- Sledge Hammer


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  reply	other threads:[~2006-09-24 11:56 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-09-19 20:29 GDS does not support Emacs 23? netawater
2006-09-22 18:29 ` Neil Jerram
2006-09-22 23:10   ` William Xu
2006-09-23  9:48     ` Neil Jerram
2006-09-23 16:38       ` William Xu
2006-09-23 21:52         ` Neil Jerram
2006-09-24 11:56           ` William Xu [this message]
2006-09-27 18:40             ` Neil Jerram
2006-09-23 16:30     ` netawater

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