Options of getaddrinfo() (1)

• ai_flags

  • AI_PASSIVE: socket address returned from the function will be used for bind().
    • switch for nodename==NULL
  • AI_CANONNAME: Request canonical name of the node
    • Result stored in the first element in the list
  • AI_NUMERICHOST / AI_NUMERICSERV: Assume nodename / servname as numeric address and do not look up nodename / servname
  • AI_ADDRCONFG: Search for addresses if local address for the corresponding protocol is available

Notes: