Result of getaddrinfo() (1)

• Return value

  • 0 if succeeded
    • Dynamically allocated result returned via res
      • freeaddrinfo(): free result
  • Otherwise getaddrinfo-specific error code
    • EAI_FAMILY, EAI_NONAME, EAI_SERVICE etc.
    • gai_strerror(): human readable string for error code
  • Result comes with information required to create socket and to connect (or to bind)
    • Address family, socket type, protocol, and length of the socket address structure
    • Yield differences among address families / protocols

Notes: