lwres_gai_strerror() returns an error message corresponding to an error code returned by getaddrinfo(). The following error codes and their meaning are defined in include/lwres/netdb.h.
address family for hostname not supported
temporary failure in name resolution
invalid value for ai_flags
non-recoverable failure in name resolution
ai_family not supported
memory allocation failure
no address associated with hostname
hostname or servname not provided, or not known
servname not supported for ai_socktype
ai_socktype not supported
system error returned in errno
ai_flags, ai_family and ai_socktype are elements of the struct addrinfo used by lwres_getaddrinfo().