deno.com

function Deno.resolveDns

allow-net

Overload 1

#resolveDns(
query: string,
recordType:
"A"
| "AAAA"
| "ANAME"
| "CNAME"
| "NS"
| "PTR"
,
): Promise<string[]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType:
"A"
| "AAAA"
| "ANAME"
| "CNAME"
| "NS"
| "PTR"
#options: ResolveDnsOptions
optional

Return Type #

Promise<string[]>

Overload 2

#resolveDns(
query: string,
recordType: "CAA",
): Promise<CaaRecord[]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: "CAA"
#options: ResolveDnsOptions
optional

Return Type #

Promise<CaaRecord[]>

Overload 3

#resolveDns(
query: string,
recordType: "MX",
): Promise<MxRecord[]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: "MX"
#options: ResolveDnsOptions
optional

Return Type #

Promise<MxRecord[]>

Overload 4

#resolveDns(
query: string,
recordType: "NAPTR",
): Promise<NaptrRecord[]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: "NAPTR"
#options: ResolveDnsOptions
optional

Return Type #

Promise<NaptrRecord[]>

Overload 5

#resolveDns(
query: string,
recordType: "SOA",
): Promise<SoaRecord[]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: "SOA"
#options: ResolveDnsOptions
optional

Return Type #

Promise<SoaRecord[]>

Overload 6

#resolveDns(
query: string,
recordType: "SRV",
): Promise<SrvRecord[]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: "SRV"
#options: ResolveDnsOptions
optional

Return Type #

Promise<SrvRecord[]>

Overload 7

#resolveDns(
query: string,
recordType: "TXT",
): Promise<string[][]>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: "TXT"
#options: ResolveDnsOptions
optional

Return Type #

Promise<string[][]>

Overload 8

#resolveDns(
query: string,
recordType: RecordType,
): Promise<
string[]
| CaaRecord[]
| MxRecord[]
| NaptrRecord[]
| SoaRecord[]
| SrvRecord[]
| string[][]
>

Performs DNS resolution against the given query, returning resolved records.

Fails in the cases such as:

  • the query is in invalid format.
  • the options have an invalid parameter. For example nameServer.port is beyond the range of 16-bit unsigned integer.
  • the request timed out.
const a = await Deno.resolveDns("example.com", "A");

const aaaa = await Deno.resolveDns("example.com", "AAAA", {
  nameServer: { ipAddr: "8.8.8.8", port: 53 },
});

Requires allow-net permission.

Parameters #

#query: string
#recordType: RecordType
#options: ResolveDnsOptions
optional

Return Type #

Promise<
string[]
| CaaRecord[]
| MxRecord[]
| NaptrRecord[]
| SoaRecord[]
| SrvRecord[]
| string[][]
>