/*****************************************************************************
Function:
void DNSResolve(uint8_t* Hostname, DNS_RESOLVE_TYPE Type)
Summary:
Begins resolution of an address.
Description:
This function attempts to resolve a host name to an IP address. When
called, it starts the DNS state machine. Call DNSIsResolved repeatedly
to determine if the resolution is complete.
Only one DNS resoultion may be executed at a time. The Hostname must
not be modified in memory until the resolution is complete.
Precondition:
DNSBeginUsage returned DNS_RES_OK on a previous call.
Parameters:
Hostname - A pointer to the null terminated string specifiying the
host for which to resolve an IP.
RecordType - DNS_TYPE_A or DNS_TYPE_MX depending on what type of
record resolution is desired.
Returns:
DNS_RES_OK
Remarks:
This function requires access to one UDP socket. If none are available,
UDP_MAX_SOCKETS may need to be increased.
***************************************************************************/
DNS_RESULT DNSResolve(const char* Hostname, DNS_RESOLVE_TYPE Type)
{
if(TCPIP_HELPER_StringToIPAddress(Hostname, &ResolvedAddress.ipv4Address))
{
Flags.bits.AddressValid = true;
smDNS = DNS_DONE;
Flags.bits.AddressType = IP_ADDRESS_TYPE_IPV4;
}
#if defined (TCPIP_STACK_USE_IPV6)
else if (TCPIP_HELPER_StringToIPv6Address ((uint8_t *)Hostname, &ResolvedAddress.ipv6Address))
{
Flags.bits.AddressValid = true;
Flags.bits.AddressType = IP_ADDRESS_TYPE_IPV6;
smDNS = DNS_DONE;
}
#endif
else
{
smDNS = DNS_START;
RecordType = (uint8_t)Type;
Flags.bits.AddressValid = false;
}
DNSHostName = Hostname;
return DNS_RES_OK;
}
bool Ping6 (char * target)
{
if (pingState != STATE_IDLE)
return false;
pNetIf = (NET_CONFIG*)TCPIP_STACK_GetDefaultNet();
pingCount = 0;
if (TCPIP_HELPER_StringToIPv6Address ((uint8_t *)target, &targetAddressIPv6))
{
// The user passed in a valid IPv6 address
pingState = STATE_SEND_ECHO_REQUEST_IPV6;
}
else
{
// The user passed in a host name
targetHostName = target;
pingState = STATE_DNS_SEND_QUERY_IPV6;
}
return true;
}
