24 lines
1.2 KiB
Text
24 lines
1.2 KiB
Text
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libasyncns is a C library for Linux/Unix for executing name service
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queries asynchronously. It is an asynchronous wrapper around
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getaddrinfo(3), getnameinfo(3), res_query(3) and res_search(3) from
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libc and libresolv.
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In contrast to GNU's asynchronous name resolving API getaddrinfo_a(),
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libasyncns does not make use of UNIX signals for reporting completion
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of name queries. Instead, the API exports a standard UNIX file
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descriptor which may be integerated cleanly into custom main loops.
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In contrast to asynchronous DNS resolving libraries like libdenise,
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skadns, adns, libasyncns is just an asynchronous wrapper around
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the libc's synchronous getaddrinfo() API, which has the advantage
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of allowing name resolution using techniques like Multicast DNS,
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LDAP or NIS using standard libc NSS (Name Service Switch) modules.
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libasyncns is compatible with IPv6 if the underlying libc is.
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libasyncns is very tiny, consisting of just one header and one
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source file. It has no dependencies besides libc.
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By default libasyncns spawns a number of worker threads (LWPs) to
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process name queries. Alternatively or when POSIX Threads are not
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supported, libasyncns can fork() off worker processes instead.
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