From: Konstantin Osipov <kostja@tarantool.org>
To: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Cc: tarantool-patches@freelists.org
Subject: [tarantool-patches] Re: [PATCH 3/7] swim: do not rebind when new 'port' is 0
Date: Wed, 15 May 2019 05:02:57 +0300 [thread overview]
Message-ID: <20190515020257.GH3801@atlas> (raw)
In-Reply-To: <22d5641734c11687a5adf489d7e49dc1de544239.1557875116.git.v.shpilevoy@tarantool.org>
* Vladislav Shpilevoy <v.shpilevoy@tarantool.org> [19/05/15 04:21]:
> SWIM internally tries to avoid unnecessary close+socket+bind
> calls on reconfiguration if a new URI is the same as an old one.
> SWIM transport compares <IP, port> couples and if they are
> equal, does nothing.
>
> But if a port is 0, it is not a real port, but a sign to the
> kernel to find any free port on the IP address. In such a case
> SWIM transport after bind() retrieves and saves a real port.
>
> When the same URI is specified again, the transport compares two
> addresses: old <IP, auto found port>, new <IP, 0>, sees they are
> 'different', and rebinds. It is not necessary, obviously, because
> the new URI covers the old one.
>
> This commit avoids rebind, when new IP == old IP, and new port is
> 0.
ok to push
--
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
next prev parent reply other threads:[~2019-05-15 2:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-14 23:06 [tarantool-patches] [PATCH 0/7] swim lua preparation, again Vladislav Shpilevoy
2019-05-14 23:06 ` [tarantool-patches] [PATCH 1/7] swim: drop swim_info() function Vladislav Shpilevoy
2019-05-15 2:00 ` [tarantool-patches] " Konstantin Osipov
2019-05-14 23:06 ` [tarantool-patches] [PATCH 2/7] swim: encapsulate 'uint16' payload size inside swim.c Vladislav Shpilevoy
2019-05-15 2:02 ` [tarantool-patches] " Konstantin Osipov
2019-05-14 23:06 ` [tarantool-patches] [PATCH 3/7] swim: do not rebind when new 'port' is 0 Vladislav Shpilevoy
2019-05-15 2:02 ` Konstantin Osipov [this message]
2019-05-14 23:06 ` [tarantool-patches] [PATCH 4/7] swim: set 'left' status in self on swim_quit() Vladislav Shpilevoy
2019-05-15 2:03 ` [tarantool-patches] " Konstantin Osipov
2019-05-14 23:06 ` [tarantool-patches] [PATCH 5/7] msgpack: allow to pass 'struct ibuf *' into encode() Vladislav Shpilevoy
2019-05-15 2:05 ` [tarantool-patches] " Konstantin Osipov
2019-05-14 23:06 ` [tarantool-patches] [PATCH 6/7] msgpack: allow to pass 'const char *' into decode() Vladislav Shpilevoy
2019-05-15 2:05 ` [tarantool-patches] " Konstantin Osipov
2019-05-14 23:06 ` [tarantool-patches] [PATCH 7/7] Drop an unused function and class Vladislav Shpilevoy
2019-05-15 2:06 ` [tarantool-patches] " Konstantin Osipov
2019-05-15 10:02 ` [tarantool-patches] Re: [PATCH 0/7] swim lua preparation, again Vladislav Shpilevoy
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