Asynchronous I/O Support

The dns.asyncquery and dns.asyncresolver modules offer asynchronous APIs equivalent to those of dns.query and dns.resolver.

Dnspython presents a uniform API, but offers two different backend implementations, to support the Trio and asyncio libraries. Dnspython attempts to detect which library is in use by using the sniffio library if it is available. It’s also possible to explicitly select a “backend” library, or to pass a backend to a particular call, allowing for use in mixed library situations.

• DNS Query Support
  • UDP
    • udp()
    • udp_with_fallback()
    • send_udp()
    • receive_udp()
  • TCP
    • tcp()
    • send_tcp()
    • receive_tcp()
  • TLS
    • tls()
  • HTTPS
    • https()
  • Zone Transfers
    • inbound_xfr()
• Stub Resolver
  • The dns.asyncresolver.Resolver Class
    • Resolver
      • Resolver.canonical_name()
      • Resolver.resolve()
      • Resolver.resolve_address()
      • Resolver.resolve_name()
      • Resolver.try_ddr()
  • Asynchronous Resolver Functions
    • resolve()
    • resolve_address()
    • resolve_name()
    • canonical_name()
    • try_ddr()
    • zone_for_name()
    • make_resolver_at()
    • resolve_at()
    • default_resolver
    • get_default_resolver()
    • reset_default_resolver()
• Asynchronous Backend Functions
  • Backend
  • DatagramSocket
  • StreamSocket
  • get_default_backend()
  • set_default_backend()
  • sniff()
  • get_backend()