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In some situations, gethostbyname can
return an empty address list.
R=rsc
http://codereview.appspot.com/6443097
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Not all systems have ss_len, and we've never set it before.
R=rsc
http://codereview.appspot.com/6497102
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R=rsc
http://codereview.appspot.com/6495109
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Fix build error and warning on OpenBSD 5.1,
as reported by Dimitri Sokolyuk.
R=rsc
http://codereview.appspot.com/6350044
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The function p9dialparse() returns the host as a sockaddr_storage
structure instead of a u32int, to be able to handle both IPv4
and IPv6 addresses. Because the sockaddr_storage structure also
handle port numbers and Unix path names, there is no longer
need to set them in the calling functions. However, these values
are still returned for convenience.
The sockaddr_in and sockaddr_un structures have been replaced
by sockaddr_storage to handle Unix, IPv4 and IPv6 sockets.
Names and addresses are resolved using either gethostbyname()
or getaddrinfo() functions.
The getaddrinfo() function is documented in RFC2553 and standardized
since POSIX.1-2001. It supports both IPv4 and IPv6 addresses.
The gethostbyname() function is deprecated since POSIX.1-2008.
However, some libc implementations don't handle getaddrinfo()
properly, thus we preferred to try gethostbyname() first.
I've tried to preserve most of the old code logic to prevent
from surprising or unwanted behavior.
R=rsc
http://codereview.appspot.com/6255068
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R=rsc
http://codereview.appspot.com/396042
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