Method: Addrinfo#canonname

Defined in:
raddrinfo.c

#canonname ⇒ String?

returns the canonical name as a string.

nil is returned if no canonical name.

The canonical name is set by Addrinfo.getaddrinfo when AI_CANONNAME is specified.

list = Addrinfo.getaddrinfo("www.ruby-lang.org", 80, :INET, :STREAM, nil, Socket::AI_CANONNAME)
p list[0] #=> #<Addrinfo: 221.186.184.68:80 TCP carbon.ruby-lang.org (www.ruby-lang.org)>
p list[0].canonname #=> "carbon.ruby-lang.org"

Returns:

  • (String, nil) 


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# File 'raddrinfo.c', line 2277

static VALUE
addrinfo_canonname(VALUE self)
{
    rb_addrinfo_t *rai = get_addrinfo(self);
    return rai->canonname;
}