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Flags that change how this function converts the socket address.
- NI_NAMEREQD
- NI_DGRAM
- NI_NOFQDN
- NI_NUMERICHOST
- NI_NUMERICSERV- an EAI_NONAME error will be returned if the host name cannot be resolved.
- NI_DGRAM - the resolved service name will be the name of the UDP service used by that port. Some ports are shared between TCP and UDP.
- NI_NOFQDN - the resolved host name will be truncated until the first '.' character.
- NI_NUMERICHOST - 'p_host_name' will be resolved to the string representation of the IP address in dotted form.
- NI_NUMERICSERV - 'p_service_name' will be resolved to the string representation of numeric value of the service port.
Returned Value
0, if no error.
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