支持HTTP和基于SSL的HTTPS协议

需要事务处理，Client发送完整的请求，并且解析服务器端的相应，保证域名更新的成功

1. 通过URL认证 (所有的在一行)
http://username:password@members.3322.org/dyndns/update?system=dyndns&hostname=yourhost.ourdomain.ext&myip=ipaddress&wildcard=OFF
&mx=mail.exchanger.ext&backmx=NO&offline=NO

2. HTTP GET 请求
1) dyndns, statdns
GET /dyndns/update?system=statdns&hostname=yourhost.ourdomain.ext
&myip=ipaddress&wildcard=OFF&mx=mail.exchanger.ext&backmx=NO
&offline=NO HTTP/1.1
Host: members.3322.org
Authorization: Basic username:pass 
(note: username:pass must be encoded in base64)
User-Agent: myclient/1.0 me@null.net

2) webhop
GET /dyndns/update?system=webhop&hostname=yourhost.ourdomain.ext&url=dest_url
&title=cloak_title&cloak=cloak HTTP/1.1
Host: members.3322.org
Authorization: Basic username:pass 
(note: username:pass must be encoded in base64)
User-Agent: myclient/1.0 me@null.net

3) subdom
GET /dyndns/update?system=subdom&hostname=yourhost.ourdomain.ext&ip1=address1&ip2=address2 HTTP/1.1
Host: members.3322.org
Authorization: Basic username:pass 
(note: username:pass must be encoded in base64)
User-Agent: myclient/1.0 me@null.net

username:password System:All Optional: No
用户名和密码用来登录

system=dyndns|statdns|webhop|subdom System:All Optional: Yes
只能使用二者之一，否则出错。如果没有这个参数，缺省是dyndns
(webhop, subdomain只能使用web更新，而用户自己的域名(3322.org的custom方式)
可以归并到现有的四种方式)

hostname=host.3322.org System:All Optional: No
需要更新的域名

myip=ipaddr System:All Optional: Yes
域名对应的IP。如果不指定，则服务器将选择最佳的IP(一些Proxy会传递客户端的IP,
这会被服务器检测到)。如果传递的地址格式错误，则忽略这个参数，而用服务器检测
到的IP。

wildcard=ON|OFF System:DynDNS, StatDNS Optional: Yes
是否支持通配符，缺省为OFF。ON意为着 *.host.3322.org等同于host.3322.org

mx=mailexchanger System:DynDNS, StatDNS Optional: Yes
指明Mail eXchanger。必须能够解析到一个IP，否则被忽略。如果不提供该参数或者
不能解析到一个IP，mx记录会被删除。

backmx=YES|NO System:DynDNS, StatDNS Optional: Yes
指明前面的mx参数会被设置成备份邮件服务器，即邮件会首先发送到你的机器上，如果
不成功，才会发送到备份邮件服务器上。

offline=YES|NO System:DynDNS Optional: Yes
使域名暂时失效。

url=dest_url System:WebHop Optional: No
webhop指向的URL地址

cloak=YES|NO System:WebHop Optional: Yes
指明webhop时是否使用frame，将转向的url包装起来。缺省是YES

title=cloak_title System:WebHop Optional: Yes
cloak时，frame的标题。缺省是 "Bentium DynDns System"

ip1=address1 System:SubDom Optional: YES
第一个域名服务器的IP地址，必须是正确的IP。如果不指定，则服务器将选择最佳的IP
(一些Proxy会传递客户端的IP, 这会被服务器检测到)。如果传递的地址格式错误，
则忽略这个参数，而用服务器检测到的IP。

ip2=address2 System:SubDom Optional: YES
第二个域名服务器的IP地址，必须是正确的IP

返回码
http://www.3322.org/dyndnspage/codes.html

希网动态域名——返回码解释

Update Complete 
good Update good and successful, IP updated 
nochg No changes, update considered abusive

good或noschg后面会跟着所更新的IP地址

Input Error Conditions
notfqdn A Fully-Qualified Domain Name was not provided
nohost The hostname specified does not exist
nourl WebHop时，没有设置URL
!donator The offline setting was set, when the user is not a donator,
this is only returned once
!yours The hostname specified exists, but not under the username
currently being used
!active The hostname specified is in a Custom DNS domain which has not
yet been activated
abuse The hostname specified is blocked for abuse; contact support to
be unblocked

Server Error Conditions
numhost Too many or too few hosts found
dnserr DNS error encountered

Wait Conditions 
wxxh Wait "xx" hours
wxxm Wait "xx" minutes
wxxs Wait "xx" seconds

Emergency Conditions 
911 Shutdown until notified otherwise via status.shtm