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authorDaniel Sommermann <[email protected]>2016-05-20 15:47:16 -0700
committerDaniel Sommermann <[email protected]>2016-05-20 15:58:41 -0700
commit5d7dcfc2e0de7e93b29d01f07a2f970720d62f9d (patch)
treea3ff59eac8c0745206f7ccde3c987148b6a72997
parent2098d573b097566d598ded1444625439ee6c0ae3 (diff)
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Make inet:gethostbyname respect resolver option `inet6`
This makes the implementation text of inet:gethostbyname/1 identical to that of inet_res:gethostbyname/1. I also copied over the doc note about this resolver option.
-rw-r--r--lib/kernel/doc/src/inet.xml7
-rw-r--r--lib/kernel/src/inet.erl7
2 files changed, 11 insertions, 3 deletions
diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index bca04aa244..5ff167bcb3 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -11,7 +11,7 @@
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
-
+
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
@@ -207,6 +207,10 @@ fe80::204:acff:fe17:bf38
<desc>
<p>Returns a <c>hostent</c> record for the host with the specified
hostname.</p>
+ <p>If resolver option <c>inet6</c> is <c>true</c>,
+ an IPv6 address is looked up. If that fails,
+ the IPv4 address is looked up and returned on
+ IPv6-mapped IPv4 format.</p>
</desc>
</func>
@@ -1267,4 +1271,3 @@ inet:setopts(Sock,[{raw,6,8,<<30:32/native>>}]),]]></code>
</list>
</section>
</erlref>
-
diff --git a/lib/kernel/src/inet.erl b/lib/kernel/src/inet.erl
index c1ae99ea24..713a9cf725 100644
--- a/lib/kernel/src/inet.erl
+++ b/lib/kernel/src/inet.erl
@@ -439,7 +439,12 @@ getstat(Socket,What) ->
Hostent :: hostent().
gethostbyname(Name) ->
- gethostbyname_tm(Name, inet, false).
+ case inet_db:res_option(inet6) of
+ true ->
+ gethostbyname_tm(Name, inet6, false);
+ false ->
+ gethostbyname_tm(Name, inet, false)
+ end.
-spec gethostbyname(Hostname, Family) ->
{ok, Hostent} | {error, posix()} when