{"image_url":null,"author_name":"m_seki","version":"1.0","width":"100%","blog_url":"https://druby.hatenablog.com/","height":"190","description":"IPv4\u306e\u30c9\u30c3\u30c8\u8868\u8a18\u3001IPv6\u306e\u30c9\u30c3\u30c8\u8868\u8a18\u3001gethostname\u3001\"localhost\"\u306e\u512a\u5148\u5ea6\u3067\u8fd4\u3057\u3066\u307f\u308b\u3002\u3053\u3046\u304b? \u3046\u30fc\u3080\u3002drb/drb.rb\u306eself.getservername\u3092\u53d6\u308a\u66ff\u3048\u308b\u3068\u826f\u3044\u3088\u3046\u306a\u6c17\u304c\u3059\u308b\u3051\u3069\u3069\u3046? require 'socket' def ipv4_addr(hostname) addr = Socket.getaddrinfo(hostname, nil, Socket::AF_INET, Socket::SOCK_STREAM, Socket::IPPROTO_IP) addr[0][3] rescue nil end def ipv6_addr(host\u2026","published":"2006-12-12 00:57:15","blog_title":"@m_seki \u306e","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdruby.hatenablog.com%2Fentry%2F20061212%2F1165939035\" title=\" \u30db\u30b9\u30c8\u540d\u3092\u6c42\u3081\u308b - @m_seki \u306e\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/m_seki/","provider_name":"Hatena Blog","title":" \u30db\u30b9\u30c8\u540d\u3092\u6c42\u3081\u308b","url":"https://druby.hatenablog.com/entry/20061212/1165939035","categories":[],"type":"rich"}