错误码
每个域名系统查询都可以返回以下错误代码之一:
dns.NODATA
: 域名系统服务器返回没有数据的答案。dns.FORMERR
: 域名系统服务器声称查询格式错误。dns.SERVFAIL
: 域名系统服务器返回一般故障。dns.NOTFOUND
: 未找到域名。dns.NOTIMP
: 域名系统服务器未执行请求的操作。dns.REFUSED
: 域名系统服务器拒绝查询。dns.BADQUERY
: 域名系统查询格式错误。dns.BADNAME
: 主机名格式错误。dns.BADFAMILY
: 不支持的地址族。dns.BADRESP
: DNS 回复格式错误。dns.CONNREFUSED
: 无法联系域名系统服务器。dns.TIMEOUT
: 联系域名系统服务器时超时。dns.EOF
: 文件结束。dns.FILE
: 读取文件时出错。dns.NOMEM
: 内存不足。dns.DESTRUCTION
: 渠道正在被销毁。dns.BADSTR
: 格式错误的字符串。dns.BADFLAGS
: 指定了非法标志。dns.NONAME
: 给定的主机名不是数字。dns.BADHINTS
: 指定了非法提示标志。dns.NOTINITIALIZED
: c-ares 库初始化尚未执行。dns.LOADIPHLPAPI
: 加载iphlpapi.dll
时出错。dns.ADDRGETNETWORKPARAMS
: 找不到GetNetworkParams
函数。dns.CANCELLED
: 域名系统查询已取消。
Each DNS query can return one of the following error codes:
dns.NODATA
: DNS server returned answer with no data.dns.FORMERR
: DNS server claims query was misformatted.dns.SERVFAIL
: DNS server returned general failure.dns.NOTFOUND
: Domain name not found.dns.NOTIMP
: DNS server does not implement requested operation.dns.REFUSED
: DNS server refused query.dns.BADQUERY
: Misformatted DNS query.dns.BADNAME
: Misformatted host name.dns.BADFAMILY
: Unsupported address family.dns.BADRESP
: Misformatted DNS reply.dns.CONNREFUSED
: Could not contact DNS servers.dns.TIMEOUT
: Timeout while contacting DNS servers.dns.EOF
: End of file.dns.FILE
: Error reading file.dns.NOMEM
: Out of memory.dns.DESTRUCTION
: Channel is being destroyed.dns.BADSTR
: Misformatted string.dns.BADFLAGS
: Illegal flags specified.dns.NONAME
: Given host name is not numeric.dns.BADHINTS
: Illegal hints flags specified.dns.NOTINITIALIZED
: c-ares library initialization not yet performed.dns.LOADIPHLPAPI
: Error loadingiphlpapi.dll
.dns.ADDRGETNETWORKPARAMS
: Could not findGetNetworkParams
function.dns.CANCELLED
: DNS query cancelled.