The
gai_strerror() function returns an error message string corresponding to the error code returned by
getaddrinfo(3) or
getnameinfo(3).
The following error codes and their meaning are defined in
<netdb.h>:
EAI_ADDRFAMILY
address family for hostname not supported
EAI_AGAIN
temporary failure in name resolution
EAI_BADFLAGS
invalid value for ai_flags
EAI_BADHINTS
invalid value for hints
EAI_FAIL
non-recoverable failure in name resolution
EAI_FAMILY
ai_family not supported.
EAI_MEMORY
memory allocation failure
EAI_NODATA
no address associated with hostname
EAI_NONAME
hostname or servname not provided, or not known
EAI_OVERFLOW
argument buffer overflow
EAI_PROTOCOL
resolved protocol is unknown
EAI_SERVICE
servname not supported for ai_socktype
EAI_SOCKTYPE
ai_socktype not supported
EAI_SYSTEM
system error returned in errno