/// <summary>
/// 查询此类型的记录列表，如果查询失败会返回原因
/// </summary>
public Result <List <string> > QueryAll(string domain, DNSQueryOptions options = DNSQueryOptions.STANDARD)
{
var rtv = new Result <List <string> >();
List <string> list = new List <string>();
rtv.Value = list;
if (String.IsNullOrEmpty(domain))
{
rtv.error("查询" + RecordType.Name + "记录域名不能为空");
return(rtv);
}
try {
var tdRes = TransformDomain(domain);
if (tdRes.IsError)
{
tdRes.errorTo(rtv);
return(rtv);
}
domain = tdRes.Value;
IntPtr ptr1 = IntPtr.Zero;
IntPtr ptr2 = IntPtr.Zero;
Record rec;
var type = Types[RecordType.Name];
int num = DnsQuery(ref domain, type, options, 0, ref ptr1, 0);
if (num != 0)
{
rtv.error("查询出错[" + num + "]");
return(rtv);
}
for (ptr2 = ptr1; !ptr2.Equals(IntPtr.Zero); ptr2 = rec.pNext)
{
rec = (Record)Marshal.PtrToStructure(ptr2, RecordType);
if (rec.wType == type)
{
list.Add(GetVal(rec));
}
}
DnsRecordListFree(ptr2, 0);
return(rtv);
} catch (Exception e) {
rtv.fail("查询" + RecordType.Name + "记录出错：" + e.Message, e.ToString());
return(rtv);
}
}
/// <summary>
/// 查询一条记录，如果没有记录或查询失败会返回原因
/// </summary>
public Result <string> QueryOne(string domain, DNSQueryOptions options = DNSQueryOptions.STANDARD)
{
var rtv = new Result <string>();
var res = QueryAll(domain, options);
if (res.IsError)
{
res.errorTo(rtv);
return(rtv);
}
var val = res.Value;
if (val.Count == 0)
{
rtv.error("未查询到" + RecordType.Name + "记录");
return(rtv);
}
rtv.Value = val[0];
return(rtv);
}
private static extern int DnsQuery([MarshalAs(UnmanagedType.VBByRefStr)] ref string pszName, int wType, DNSQueryOptions options, int aipServers, ref IntPtr ppQueryResults, int pReserved);
