c# - SEO : A whois server that work for . SE 域？

Question

我正在开发一个小型域名检查器，但我无法让 .SE 工作:

public string Lookup(string domain, RecordType recordType, SeoToolsSettings.Tld tld)
{
    TcpClient tcp = new TcpClient();
    tcp.Connect(tld.WhoIsServer, 43);
    string strDomain = recordType.ToString() + " " + domain + "\r\n";
    byte[] bytDomain = Encoding.ASCII.GetBytes(strDomain.ToCharArray());
    Stream s = tcp.GetStream();
    s.Write(bytDomain, 0, strDomain.Length);
    StreamReader sr = new StreamReader(tcp.GetStream(), Encoding.ASCII);
    string strLine = "";
    StringBuilder builder = new StringBuilder();
    while (null != (strLine = sr.ReadLine()))
    {
        builder.AppendLine(strLine);
    }
    tcp.Close();
    if (tld.WhoIsDelayMs > 0) System.Threading.Thread.Sleep(tld.WhoIsDelayMs);
    return builder.ToString();
}

我已经尝试了 whois 服务器 whois.nic-se.se 和 whois.iis.se 我不断得到:

# Copyright (c) 1997- .SE (The Internet Infrastructure Foundation).
# All rights reserved.

# The information obtained through searches, or otherwise, is protected
# by the Swedish Copyright Act (1960:729) and international conventions.
# It is also subject to database protection according to the Swedish
# Copyright Act.

# Any use of this material to target advertising or
# similar activities is forbidden and will be prosecuted.
# If any of the information below is transferred to a third
# party, it must be done in its entirety. This server must
# not be used as a backend for a search engine.

# Result of search for registered domain names under
# the .SE top level domain.

# The data is in the UTF-8 character set and the result is
# printed with eight bits.

"domain google.se" not found.

编辑:

我已经尝试更改为 UTF8，但没有其他结果。

当我尝试使用 sysinternals 的 whois 时，我得到了正确的结果，但我的代码却没有，甚至没有使用 SE.whois-servers.net。

/尼尔斯

Answer 1

嗯，在我的 Mac 上执行 whois google.se 时，我得到以下信息:

# Copyright (c) 1997- .SE (The Internet Infrastructure Foundation).
# All rights reserved.

# The information obtained through searches, or otherwise, is protected
# by the Swedish Copyright Act (1960:729) and international conventions.
# It is also subject to database protection according to the Swedish
# Copyright Act.

# Any use of this material to target advertising or
# similar activities is forbidden and will be prosecuted.
# If any of the information below is transferred to a third
# party, it must be done in its entirety. This server must
# not be used as a backend for a search engine.

# Result of search for registered domain names under
# the .SE top level domain.

# The data is in the UTF-8 character set and the result is
# printed with eight bits.

state:            active
domain:           google.se
holder:           googoo5855-00001
admin-c:          -
tech-c:           -
billing-c:        -
created:          2008-10-20
modified:         2010-09-18
expires:          2011-10-20
transferred:      2009-03-06
nserver:          ns1.google.com
nserver:          ns2.google.com
nserver:          ns3.google.com
nserver:          ns4.google.com
dnssec:           unsigned delegation
status:           ok
registrar:        MarkMonitor Inc

所以这可能只是您的代码。也许您必须以非 ASCII 编码(例如 UTF8)执行请求？