gai_strerror() - Update string error messages according to RFC 3493.
Error messages in gai_strerror(3) vary largely among OSs. For new software we largely replaced the obsoleted EAI_NONAME and with EAI_NODATA but we never updated the corresponding message to better match the intended use. We also have references to ai_flags and ai_family which are not very descriptive for non-developer end users. Bring new new error messages based on informational RFC 3493, which has obsoleted RFC 2553, and make them consistent among the header adn manpage. MFC after: 1 month Differentical Revision: D18630
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@ -159,24 +159,24 @@ struct addrinfo {
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#define NO_ADDRESS NO_DATA /* no address, look for MX record */
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#define NO_ADDRESS NO_DATA /* no address, look for MX record */
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/*
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/*
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* Error return codes from getaddrinfo()
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* Error return codes from gai_strerror(3), see RFC 3493.
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*/
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*/
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#if 0
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#if 0
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/* obsoleted */
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/* Obsoleted on RFC 2553bis-02 */
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#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
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#define EAI_ADDRFAMILY 1 /* address family for hostname not supported */
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#endif
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#endif
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#define EAI_AGAIN 2 /* temporary failure in name resolution */
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#define EAI_AGAIN 2 /* name could not be resolved at this time */
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#define EAI_BADFLAGS 3 /* invalid value for ai_flags */
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#define EAI_BADFLAGS 3 /* flags parameter had an invalid value */
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#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
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#define EAI_FAIL 4 /* non-recoverable failure in name resolution */
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#define EAI_FAMILY 5 /* ai_family not supported */
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#define EAI_FAMILY 5 /* address family was recognized */
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#define EAI_MEMORY 6 /* memory allocation failure */
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#define EAI_MEMORY 6 /* memory allocation failure */
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#if 0
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#if 0
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/* obsoleted */
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/* Obsoleted on RFC 2553bis-02 */
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#define EAI_NODATA 7 /* no address associated with hostname */
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#define EAI_NODATA 7 /* no address associated with hostname */
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#endif
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#endif
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#define EAI_NONAME 8 /* hostname nor servname provided, or not known */
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#define EAI_NONAME 8 /* name does not resolve */
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#define EAI_SERVICE 9 /* servname not supported for ai_socktype */
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#define EAI_SERVICE 9 /* service not recognized for socket type */
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#define EAI_SOCKTYPE 10 /* ai_socktype not supported */
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#define EAI_SOCKTYPE 10 /* intended socket type was not recognized */
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#define EAI_SYSTEM 11 /* system error returned in errno */
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#define EAI_SYSTEM 11 /* system error returned in errno */
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#define EAI_BADHINTS 12 /* invalid value for hints */
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#define EAI_BADHINTS 12 /* invalid value for hints */
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#define EAI_PROTOCOL 13 /* resolved protocol is unknown */
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#define EAI_PROTOCOL 13 /* resolved protocol is unknown */
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