Is it necessary to attempt to connect to all addresses returned by getaddrinfo()?

Question

Beej\'s Simple Client example code iterates over all IP addresses returned from getaddrinfo(), until it can connect to the first one. See the code below.

Is this always

Answer 1

In addition to the other answers given above, consider the common case that for larger websites and so on, that multiple A records might be published, for redundancy purposes. If a connect() to the first address fails, you want to try the others as well.