<[EMAIL PROTECTED]> wrote:
>
> The problem is we found when the server porcess open 1000+ or higher
> sockets(but we can query any legal domain in the system normally), the
> gethostbyname or getaddrinfo might fetch nothing(sometimes the query
> is ok), the gethostbyname's return error is: errno=2,strerror=Host
> name lookup failure
It sounds like the resolver library is running into a 1024-descriptor
limit. From select(2):
NOTES
The default size of FD_SETSIZE is currently 1024. In order to accommo-
date programs which might potentially use a larger number of open files
with select(), it is possible to increase this size by having the program
define FD_SETSIZE before the inclusion of any header which includes
<sys/types.h>.
Unfortunately you might have to rebuild the resolver library itself in
order for it to be able to query file descriptors larger than 1024.
--
David DeSimone == Network Admin == [EMAIL PROTECTED]
"I don't like spinach, and I'm glad I don't, because if I
liked it I'd eat it, and I just hate it." -- Clarence Darrow
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