From: Marcin 'Qrczak' Kowalczyk <qrczak@...>
Date: 2002-06-01T20:26:29+09:00
Subject: Re: Sockets, AF_INET6 and getnameinfo problem

Sat, 1 Jun 2002 16:10:14 +0900, Yukihiro Matsumoto <matz@ruby-lang.org> pisze:

> I suspect getnameinfo(3) on Linux does not work well for IPv6.

It's glibc-2.2.5.

> Could you report your compile time information (output from
> extconf.rb or Makefile contents), if you compile Ruby by yourself.

You mean this part of ext/socket/Makefile?

CFLAGS   = -fPIC -g -O2 -fPIC -DHAVE_GETADDRINFO -DHAVE_SOCKADDR_STORAGE
CPPFLAGS = -I$(topdir) -I$(hdrdir) -DHAVE_NETINET_TCP_H
-DHAVE_NETINET_UDP_H -DHAVE_ST_MSG_CONTROL -DHAVE_GETADDRINFO
-DHAVE_GETNAMEINFO -DHAVE_SYS_UN_H -DHAVE_SYS_UIO_H -DHAVE_SOCKET
-DHAVE_GETHOSTNAME  -Dss_family=__ss_family -Dss_len=__ss_len
DLDFLAGS =  -L/home/users/qrczak/cvs/ruby -L${exec_prefix}/lib
LDSHARED = gcc -shared

It seems that IPV6 is not detected. Indeed if I hack extconf to say
'if enable_config("ipv6", true)' instead of '...false', then everything
works! ./configure --enable-ipv6 doesn't work. And it should work by
default, without ./configure options.

BTW, two other small errors:

--- ext/socket/socket.c.orig	Fri May 31 23:13:24 2002
+++ ext/socket/socket.c	Sat Jun  1 13:24:08 2002
@@ -585,7 +585,7 @@
 	portp = 0;
     }
     else if (FIXNUM_P(port)) {
-	snprintf(pbuf, sizeof(pbuf), "%ld", FIX2INT(port));
+	snprintf(pbuf, sizeof(pbuf), "%d", FIX2INT(port));
 	portp = pbuf;
     }
     else {
@@ -673,7 +673,7 @@
     error = getnameinfo(sockaddr, SA_LEN(sockaddr), hbuf, sizeof(hbuf),
 			pbuf, sizeof(pbuf), NI_NUMERICHOST | NI_NUMERICSERV);
     if (error) {
-	rb_raise(rb_eSocket, "getnameinfo %s", gai_strerror(error));
+	rb_raise(rb_eSocket, "getnameinfo: %s", gai_strerror(error));
     }
     addr2 = rb_tainted_str_new2(hbuf);
     if (do_not_reverse_lookup) {

-- 
 __("<  Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/
 \__/
  ^^
QRCZAK