From: Andy Wingo <wingo@pobox.com>
To: taylanbayirli@gmail.com (Taylan Ulrich "Bayırlı/Kammer")
Cc: 18914@debbugs.gnu.org
Subject: bug#18914: 2.0.11 REPL server listens on 127.0.0.1 but not "localhost"
Date: Wed, 22 Jun 2016 10:32:06 +0200 [thread overview]
Message-ID: <87por9tyih.fsf@pobox.com> (raw)
In-Reply-To: <878ujtbusi.fsf@taylan.uni.cx> ("Taylan Ulrich \"Bayırlı/Kammer\""'s message of "Sun, 02 Nov 2014 14:23:41 +0100")
Hi,
Works for me, with Guile 2.0.11 also. Could it be that "nc" is trying
to connect to an IPv6 address?
Andy
On Sun 02 Nov 2014 14:23, taylanbayirli@gmail.com (Taylan Ulrich "Bayırlı/Kammer") writes:
> <dsmich@roadrunner.com> writes:
>
>> Seems to work fine on master
>
> I just built from the master branch to be sure and can still reproduce.
>
>> Maybe try strace, possibly limiting it with -e connect, to reveal what
>> it's actually doing.
>
> Not sure what I should be looking for, but there is no connect() call,
> no occurrence of "localhost" in the whole output, but the following
> snippet at some point:
>
> ...
> socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 8
> fcntl(8, F_GETFL) = 0x2 (flags O_RDWR)
> lseek(8, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
> setsockopt(8, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
> bind(8, {sa_family=AF_INET, sin_port=htons(37146), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
> mmap(NULL, 8720384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f35aaf81000
> mprotect(0x7f35aaf81000, 4096, PROT_NONE) = 0
> clone(child_stack=0x7f35ab7d0ff0,
> flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
> parent_tidptr=0x7f35ab7d19d0, tls=0x7f35ab7d1700,
> child_tidptr=0x7f35ab7d19d0) = 2099
> futex(0x7fffd27a33fc, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
> ...
>
> which is also the sole occurrence of '127.0.0.1'. Seems to come from
> `make-tcp-server-socket' in module/system/repl/server.scm where it
> passes INADDR_LOOPBACK, an integer whose value is 127.0.0.1 as a uint32,
> to bind(). I don't know at what point it's normally supposed to make
> the association with "localhost".
>
> Any further help in how to debug this is appreciated. I have little
> knowledge of the POSIX networking API.
>
> Taylan
next prev parent reply other threads:[~2016-06-22 8:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 13:52 bug#18914: 2.0.11 REPL server listens on 127.0.0.1 but not "localhost" "Taylan Ulrich Bayırlı/Kammer"
2014-10-31 22:33 ` dsmich
2014-10-31 22:49 ` Taylan Ulrich Bayırlı/Kammer
2014-11-01 20:56 ` dsmich
2014-11-02 13:23 ` Taylan Ulrich Bayırlı/Kammer
2016-06-22 8:32 ` Andy Wingo [this message]
2016-07-12 7:17 ` Andy Wingo
2021-05-17 20:43 ` Taylan Kammer
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