[jruby-dev] [jira] (JRUBY-7147) Socket.gethostname returns 0.0.0.0

[Jordan Sissel (JIRA)]

Jordan Sissel created JRUBY-7147 Socket.gethostname returns 0.0.0.0 Issue Type: Bug Assignee: Thomas E Enebo Created: 16/Apr/13 11:28 AM Description: Socket.gethostname() returns "0.0.0.0" dns cannot resolve the hostname. Which is kind of odd So, here's what I know - When 'Socket.gethostname' is invoked, JRuby does a dns request for the hostname of the server. If that dns request returns NXDOMAIN, Socket.gethostname reports 0.0.0.0. The weirdest part about this is that it does a dns request for the hostname that I"m asking for. Here's some tcpdump showing it happening: % ruby -rsocket -e 'puts Socket.gethostname' 0.0.0.0 09:27:33.705005 IP 127.0.0.1.60310 > 127.0.1.1.53: 48273+ AAAA? sadness. (25) 09:27:33.705071 IP 192.168.1.103.13241 > 192.168.1.1.53: 3049+ AAAA? sadness. (25) 09:27:33.716733 IP 192.168.1.1.53 > 192.168.1.103.13241: 3049 NXDomain 0/1/0 (100) 09:27:33.716892 IP 127.0.1.1.53 > 127.0.0.1.60310: 48273 NXDomain 0/1/0 (100) 09:27:33.716976 IP 127.0.0.1.40985 > 127.0.1.1.53: 38863+ A? sadness. (25) 09:27:33.717005 IP 192.168.1.103.11594 > 192.168.1.1.53: 30913+ A? sadness. (25) 09:27:33.731331 IP 192.168.1.1.53 > 192.168.1.103.11594: 30913 NXDomain 0/1/0 (100) 09:27:33.731481 IP 127.0.1.1.53 > 127.0.0.1.40985: 38863 NXDomain 0/1/0 (100) 09:27:33.732950 IP 127.0.0.1.36516 > 127.0.1.1.53: 42298+ PTR? 0.0.0.0.in-addr.arpa. (38) 09:27:33.733004 IP 192.168.1.103.22319 > 192.168.1.1.53: 21269+ PTR? 0.0.0.0.in-addr.arpa. (38) 09:27:33.748471 IP 192.168.1.1.53 > 192.168.1.103.22319: 21269 NXDomain 0/1/0 (106) 09:27:33.748553 IP 127.0.1.1.53 > 127.0.0.1.36516: 42298 NXDomain 0/1/0 (106) "sadness" is the name of this workstation and is the string returned by the hostname(1) command and the same value given by gethostname(3). Project: JRuby Priority: Major Reporter: Jordan Sissel

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