Converts the string representation of a host name to its corresponding IP address using DNS service.
Files
dns-c.h/dns-c.c
Prototype
Arguments
host_name
Pointer to the string representation of a host name.
Returned Values
IP address of the host, if no errors;
NET_IP_ADDR_NONE
, otherwise.
Required Configuration
None.
Notes / Warnings
This function is a simplified version of BSD socket API’s gethostbyname()
. Given a domain name, this function will first query a locally maintained cache and, if no match is found, it will issue a DNS query to retrieve the host’s IP address.