关于Whois服务器回复的详细信息
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背景
今天，我想测试WHOIS查询和响应协议的工作原理，我在Wiki上阅读了一些信息并开始编写代码。 5分钟后，我获得了完整且有效的代码，但是我有一些疑问想与您分享。
码
这是一个简单的代码，它向给定的whois.iana.org url发出请求并从中获取答复。例如，我在这里请求vitobrothersoft.com并得到答复。现在的主要问题不是这一切如何运作，这对我来说是可以理解的。在测试这部分代码时，我更改了请求域whois.iana.org，com.whois-servers.net，whois.verisign-grs.com，并且在某些方面，答复在某些方面相同。您可以看到下面的回复示例。
#include \"stdafx.h\"
using namespace System;
#define PORT 43
int main(array<System::String ^> ^args)
{
System::Net::Sockets::TcpClient^ client = gcnew System::Net::Sockets::TcpClient(\"whois.iana.org\", PORT);
if( client != nullptr ) {
System::String^ formatedDomain = \"vitobrothersoft.com\" + \"\\r\\n\";
System::Text::Encoding^ ascii = System::Text::Encoding::ASCII;
array<System::Byte>^ byteUrl = ascii->GetBytes(formatedDomain);
System::IO::Stream^ stream = client->GetStream();
// Write formatted URL to stream.
stream->Write( byteUrl, 0, formatedDomain->Length );
System::IO::StreamReader^ streamReader = gcnew System::IO::StreamReader( stream, System::Text::Encoding::ASCII );
Console::Write( streamReader->ReadToEnd( ) );
}
}
[Querying com.whois-servers.net]
[com.whois-servers.net]
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
Domain Name: EXAMPLE.COM
Registrar: RESERVED-INTERNET ASSIGNED NUMBERS AUTHORITY
Whois Server: whois.iana.org
Referral URL: http://res-dom.iana.org
Name Server: A.IANA-SERVERS.NET
Name Server: B.IANA-SERVERS.NET
Status: clientDeleteProhibited
Status: clientTransferProhibited
Status: clientUpdateProhibited
Updated Date: 26-mar-2004
Creation Date: 14-aug-1995
Expiration Date: 13-aug-2011
>>> Last update of whois database: Tue, 17 Aug 2010 02:23:52 UTC <<<
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伞腹
稍惮
陷牡彭拈峰