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Old 12-27-2012, 08:32 AM   #1
icegood
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gethostbyaddr vs getaddrinfo and getnameinfo

Why gethostbyaddr treated as obsolete and getaddrinfo and getnameinfo should be used instead, if unde latter one i'm unable to get aliases from /etc/hosts while in case gethostbyaddr i will?
 
Old 12-28-2012, 02:21 PM   #2
nini09
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The gethostbyaddr performs netbios lookup. It is very slow when the host can't be found. The getnameinfo only contact DNS server, should be faster.
 
Old 12-29-2012, 05:29 PM   #3
icegood
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Thanks, what about aliases in /etc/hosts? Why they become unavailable under DNS?
 
Old 12-31-2012, 03:04 PM   #4
nini09
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In general, the file is for domain name and static host name. Some distribution could change file name to another one. It look like no affaction.
 
  


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