[erlang-patches] [PATCH] epmd: support IPv6 node registration
Fri May 3 15:44:22 CEST 2013
On 05/03/2013 03:27 PM, Michael Santos wrote:
> On Wed, Feb 20, 2013 at 07:55:17AM -0500, Michael Santos wrote:
>> Allow IPv6 nodes to register with and query epmd. On systems with
>> IPv6 support:
>> * epmd listens on both the IPv4 and IPv6 ANY or loopback sockets
>> * the epmd cli client connects to epmd over the IPv6 loopback
>> * distributed nodes started with "-proto_dist inet6_tcp" will register
>> with epmd over IPv6
>> The interaction between IPv4 and IPv6 sockets depends on the platform:
>> * FreeBSD allows multiple "specific" sockets to bind the same port (such
>> as 2 sockets listening to the same port on ANY and the loopback).
>> Binding port 4369 to IPv4 and IPv6 sockets simulataneously is allowed.
>> * Linux does not allow the same port to be bound by different sockets.
>> Setting the IPV6_V6ONLY socket option is required.
>> * Windows
>> The behaviour differs depending on the version of Windows:
>> According to the site, sockets on Windows XP with Service Pack 1 (SP1)
>> and Windows Server 2003 will only listen on either IPv4 or IPv6, so
>> creating two sockets is required to service IPv4 and IPv6 traffic on
>> the same port. The IPV6_V6ONLY socket option is not supported.
>> For Windows Vista and later, a single socket can handle IPv4 and IPv6
>> traffic for the same port. The IPV6_V6ONLY socket option is supported
>> and is enabled for IPv6 sockets by default.
>> erts/doc/src/epmd.xml | 2 +-
>> erts/doc/src/erl.xml | 22 +++++
>> erts/epmd/src/epmd.c | 6 +-
>> erts/epmd/src/epmd_cli.c | 11 ++-
>> erts/epmd/src/epmd_int.h | 63 +++++++++----
>> erts/epmd/src/epmd_srv.c | 184 +++++++++++++++++++++++++------------
>> erts/epmd/test/epmd_SUITE.erl | 33 ++++++-
>> lib/kernel/src/erl_epmd.erl | 18 ++--
>> lib/kernel/src/inet6_tcp_dist.erl | 2 +-
>> 9 files changed, 248 insertions(+), 93 deletions(-)
> erlang-patches mailing list
I thought that I've already mailed you back regarding this patch. But
now I don't seem to remember what I wanted you to do about it.
I will run it in 'pu' builds over the weekend. If it turns out OK it
will be reviewed.
BR Fredrik Gustafsson
Erlang OTP Team
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