Packages

trait DNS extends Object with IResolver

The dns module contains functions belonging to two different categories: 1) Functions that use the underlying operating system facilities to perform name resolution, and that do not necessarily perform any network communication. This category contains only one function: dns.lookup(). Developers looking to perform name resolution in the same way that other applications on the same operating system behave should use dns.lookup().

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See also

https://nodejs.org/api/dns.html

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IResolver, Object, Any, AnyRef, Any
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DNS
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  9. final def getClass(): Class[_]
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  10. def getServers(): Array[String]
    Definition Classes
    IResolver
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    Object
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  13. final def isInstanceOf[T0]: Boolean
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  14. def isPrototypeOf(v: Object): Boolean
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    Object
  15. def lookup(hostname: String, callback: DnsCallback1[String]): Unit

    Resolves a hostname (e.g.

    Resolves a hostname (e.g. 'nodejs.org') into the first found A (IPv4) or AAAA (IPv6) record. options can be an object or integer. If options is not provided, then IPv4 and IPv6 addresses are both valid. If options is an integer, then it must be 4 or 6.

    Alternatively, options can be an object containing these properties:

    • family <Number> - The record family. If present, must be the integer 4 or 6. If not provided, both IP v4 and v6 addresses are accepted.
    • hints: <Number> - If present, it should be one or more of the supported getaddrinfo flags. If hints is not provided, then no flags are passed to getaddrinfo. Multiple flags can be passed through hints by logically ORing their values. See supported getaddrinfo flags for more information on supported flags.
    • all: <Boolean> - When true, the callback returns all resolved addresses in an array, otherwise returns a single address. Defaults to false.

    All properties are optional.

    Example:

    1. dns.lookup(hostname[, options], callback)

  16. def lookup(hostname: String, options: |[DnsOptions, Int], callback: DnsCallback2[String, Int]): Unit

    Resolves a hostname (e.g.

    Resolves a hostname (e.g. 'nodejs.org') into the first found A (IPv4) or AAAA (IPv6) record. options can be an object or integer. If options is not provided, then IPv4 and IPv6 addresses are both valid. If options is an integer, then it must be 4 or 6.

    Alternatively, options can be an object containing these properties:

    • family <Number> - The record family. If present, must be the integer 4 or 6. If not provided, both IP v4 and v6 addresses are accepted.
    • hints: <Number> - If present, it should be one or more of the supported getaddrinfo flags. If hints is not provided, then no flags are passed to getaddrinfo. Multiple flags can be passed through hints by logically ORing their values. See supported getaddrinfo flags for more information on supported flags.
    • all: <Boolean> - When true, the callback returns all resolved addresses in an array, otherwise returns a single address. Defaults to false.

    All properties are optional.

    Example:

    1. dns.lookup(hostname[, options], callback)

  17. def lookupService(address: String, port: Int, callback: DnsCallback2[String, String]): Unit

    Resolves the given address and port into a hostname and service using the operating system's underlying getnameinfo implementation.

    Resolves the given address and port into a hostname and service using the operating system's underlying getnameinfo implementation.

    If address is not a valid IP address, a TypeError will be thrown. The port will be coerced to a number. If it is not a legal port, a TypeError will be thrown.

    The callback has arguments (err, hostname, service). The hostname and service arguments are strings (e.g. 'localhost' and 'http' respectively).

    On error, err is an Error object, where err.code is the error code.

    Examples:

    1. dns.lookupService(address, port, callback)

      2. ,

    2. dns.lookupService('127.0.0.1', 22, (err, hostname, service) => { ... })

  18. final def ne(arg0: AnyRef): Boolean
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    AnyRef
  19. final def notify(): Unit
    Definition Classes
    AnyRef
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  20. final def notifyAll(): Unit
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  21. def propertyIsEnumerable(v: String): Boolean
    Definition Classes
    Object
  22. def resolve(hostname: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  23. def resolve(hostname: String, rrtype: RRType, callback: DnsCallback1[ResolveResult]): Unit
    Definition Classes
    IResolver
  24. def resolve4(hostname: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  25. def resolve4(hostname: String, options: TtlOptions, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  26. def resolve6(hostname: String, options: TtlOptions, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  27. def resolve6(hostname: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  28. def resolveAny(hostname: String, callback: DnsCallback1[Array[ResolveObject]]): Unit
    Definition Classes
    IResolver
  29. def resolveCname(hostname: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  30. def resolveMx(hostname: String, callback: DnsCallback1[Array[MX]]): Unit
    Definition Classes
    IResolver
  31. def resolveNaptr(hostname: String, callback: DnsCallback1[Array[NAPTR]]): Unit
    Definition Classes
    IResolver
  32. def resolveNs(hostname: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  33. def resolvePtr(hostname: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  34. def resolveSoa(hostname: String, callback: DnsCallback1[Array[SOA]]): Unit
    Definition Classes
    IResolver
  35. def resolveSrv(hostname: String, callback: DnsCallback1[Array[SRV]]): Unit
    Definition Classes
    IResolver
  36. def resolveTxt(hostname: String, callback: DnsCallback1[Array[Array[String]]]): Unit
    Definition Classes
    IResolver
  37. def reverse(ipAddress: String, callback: DnsCallback1[Array[String]]): Unit
    Definition Classes
    IResolver
  38. def setServers(servers: Array[String]): Unit
    Definition Classes
    IResolver
  39. final def synchronized[T0](arg0: ⇒ T0): T0
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