Enum trust_dns_proto::op::response_code::ResponseCode

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pub enum ResponseCode {
Show 21 variants    NoError,
    FormErr,
    ServFail,
    NXDomain,
    NotImp,
    Refused,
    YXDomain,
    YXRRSet,
    NXRRSet,
    NotAuth,
    NotZone,
    BADVERS,
    BADSIG,
    BADKEY,
    BADTIME,
    BADMODE,
    BADNAME,
    BADALG,
    BADTRUNC,
    BADCOOKIE,
    Unknown(u16),
}

Expand description

The status code of the response to a query.

RFC 1035, DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION, November 1987

RCODE           Response code - this 4 bit field is set as part of
                responses.  The values have the following
                interpretation:

                0               No error condition

                1               Format error - The name server was
                                unable to interpret the query.

                2               Server failure - The name server was
                                unable to process this query due to a
                                problem with the name server.

                3               Name Error - Meaningful only for
                                responses from an authoritative name
                                server, this code signifies that the
                                domain name referenced in the query does
                                not exist.

                4               Not Implemented - The name server does
                                not support the requested kind of query.

                5               Refused - The name server refuses to
                                perform the specified operation for
                                policy reasons.  For example, a name
                                server may not wish to provide the
                                information to the particular requester,
                                or a name server may not wish to perform
                                a particular operation (e.g., zone
                                transfer) for particular data.

                6-15            Reserved for future use.

Variants

`NoError`

No Error RFC 1035

`FormErr`

Format Error RFC 1035

`ServFail`

Server Failure RFC 1035

`NXDomain`

Non-Existent Domain RFC 1035

`NotImp`

Not Implemented RFC 1035

`Refused`

Query Refused RFC 1035

`YXDomain`

Name Exists when it should not RFC 2136

`YXRRSet`

RR Set Exists when it should not RFC 2136

`NXRRSet`

RR Set that should exist does not RFC 2136

`NotAuth`

Server Not Authoritative for zone RFC 2136 or Not Authorized RFC 2845

`NotZone`

Name not contained in zone RFC 2136

`BADVERS`

Bad OPT Version RFC 6891

`BADSIG`

TSIG Signature Failure RFC 2845

`BADKEY`

Key not recognized RFC 2845

`BADTIME`

Signature out of time window RFC 2845

`BADMODE`

Bad TKEY Mode RFC 2930

`BADNAME`

Duplicate key name RFC 2930

`BADALG`

Algorithm not supported RFC 2930

`BADTRUNC`

Bad Truncation RFC 4635

`BADCOOKIE`

Bad/missing server cookie draft-ietf-dnsop-cookies

`Unknown(u16)`

An unknown or unregisterd response code was received.

Implementations

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impl ResponseCode

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pub fn low(self) -> u8

returns the lower 4 bits of the response code (for the original header portion of the code)

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pub fn high(self) -> u8

returns the high 8 bits for the EDNS portion of the response code

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pub fn from_low(low: u8) -> Self

DNS can not store the entire space of ResponseCodes in 4 bit space of the Header, this function allows for a initial value of the first 4 bits to be set.

After the EDNS is read, the entire ResponseCode (12 bits) can be reconstructed for the full ResponseCode.

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pub fn from(high: u8, low: u8) -> Self

Combines the EDNS high and low from the Header to produce the Extended ResponseCode

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pub fn to_str(self) -> &'static str

Transforms the response code into the human message

Trait Implementations

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impl Clone for ResponseCode

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fn clone(&self) -> ResponseCode

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for ResponseCode

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl Default for ResponseCode

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl Display for ResponseCode

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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impl From<ResponseCode> for u16

Convert from ResponseCode to u16

use std::convert::From;
use trust_dns_proto::op::response_code::ResponseCode;

let var: ResponseCode = From::from(0);
assert_eq!(ResponseCode::NoError, var);

let var: ResponseCode = 0.into();
assert_eq!(ResponseCode::NoError, var);

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fn from(rt: ResponseCode) -> Self

Performs the conversion.

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impl From<u16> for ResponseCode

Convert from u16 to ResponseCode

use std::convert::From;
use trust_dns_proto::op::response_code::ResponseCode;

let var: u16 = From::from(ResponseCode::NoError);
assert_eq!(0, var);

let var: u16 = ResponseCode::NoError.into();
assert_eq!(0, var);