[Mono-bugs] [Bug 322587] Dns.GetHostEntry fails to resolve IP addresses

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Mon Nov 5 13:10:36 EST 2007


--- Comment #2 from Geoff Norton <gnorton at novell.com>  2007-11-05 11:10:36 MST ---
Ok I've figured out whats wrong here.  Our call pattern in this case is

struct sockaddr_in saddr;
char hostname[1024] = {0};

inet_pton (AF_INET, address, &saddr.sin_addr);
getnameinfo ((struct sockaddr *)&saddr, sizeof (struct sockaddr), hostname,
sizeof (hostname), NULL, 0, 0);

The problem is on darwin struct sockaddr_in has a sin_len property that is
initialized to 0.  The sin_len (at least for AF_INET) should be 16 and then the
getnameinfo call will succeed.

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