Options for getnameinfo()

• Search options

  • flags
    • NI_NOFQDN: only the node name portion of the FQDN for local hosts
      • Default: FQDN
    • NI_NAMEREQD: return an error if the host's name cannot be located
      • Default: return in numeric form
    • NI_NUMERICHOST: Always return in numeric form
    • NI_NUMERICSERV: Always return in numeric form
    • NI_DGRAM: Look up service for datagram protocol (especially UDP)

Notes: