DNSClient Class Reference

#include <Dns.h>

Public Member Functions
void	begin (const IPAddress &aDNSServer)
int	inet_aton (const char *aIPAddrString, IPAddress &aResult)
int	getHostByName (const char *aHostname, IPAddress &aResult)

Protected Member Functions
uint16_t	BuildRequest (const char *aName)
uint16_t	ProcessResponse (uint16_t aTimeout, IPAddress &aAddress)

Protected Attributes
IPAddress	iDNSServer
uint16_t	iRequestId
RF24UDP	iUdp

Detailed Description

Definition at line 12 of file Dns.h.

Member Function Documentation

begin()

void DNSClient::begin

(

const IPAddress &

aDNSServer

)

Definition at line 45 of file Dns.cpp.

References iDNSServer, and iRequestId.

Referenced by RF24UDP::beginPacket(), and RF24Client::connect().

inet_aton()

int DNSClient::inet_aton	(	const char *	aIPAddrString,
		IPAddress &	aResult )

Convert a numeric IP address string into a four-byte IP address.

Parameters

aIPAddrString	IP address to convert
aResult	IPAddress structure to store the returned IP address

Returns

1 if aIPAddrString was successfully converted to an IP address, else error code

Definition at line 51 of file Dns.cpp.

Referenced by getHostByName().

getHostByName()

int DNSClient::getHostByName	(	const char *	aHostname,
		IPAddress &	aResult )

Resolve the given hostname to an IP address.

Parameters

aHostname	Name to be resolved
aResult	IPAddress structure to store the returned IP address

Returns

1 if aIPAddrString was successfully converted to an IP address, else error code

Definition at line 110 of file Dns.cpp.

References BuildRequest(), DNS_PORT, iDNSServer, IF_RF24ETHERNET_DEBUG_DNS, inet_aton(), INVALID_SERVER, iUdp, ProcessResponse(), and TIMED_OUT.

Referenced by RF24UDP::beginPacket(), and RF24Client::connect().

BuildRequest()

uint16_t DNSClient::BuildRequest ( const char * aName )

protected

Definition at line 168 of file Dns.cpp.

References CLASS_IN, iRequestId, iUdp, OPCODE_STANDARD_QUERY, QUERY_FLAG, RECURSION_DESIRED_FLAG, and TYPE_A.

Referenced by getHostByName().

ProcessResponse()

uint16_t DNSClient::ProcessResponse ( uint16_t aTimeout, IPAddress & aAddress )

protected

Definition at line 247 of file Dns.cpp.

References CLASS_IN, DNS_HEADER_SIZE, DNS_PORT, HTONS, iDNSServer, IF_RF24ETHERNET_DEBUG_DNS, INVALID_RESPONSE, INVALID_SERVER, iRequestId, iUdp, LABEL_COMPRESSION_MASK, QUERY_RESPONSE_MASK, RESP_MASK, RESPONSE_FLAG, SUCCESS, TIMED_OUT, TRUNCATED, TRUNCATION_FLAG, TTL_SIZE, and TYPE_A.

Referenced by getHostByName().

Member Data Documentation

iDNSServer

IPAddress DNSClient::iDNSServer

protected

Definition at line 39 of file Dns.h.

Referenced by begin(), getHostByName(), and ProcessResponse().

iRequestId

uint16_t DNSClient::iRequestId

protected

Definition at line 40 of file Dns.h.

Referenced by begin(), BuildRequest(), and ProcessResponse().

iUdp

RF24UDP DNSClient::iUdp

protected

Definition at line 41 of file Dns.h.

Referenced by BuildRequest(), getHostByName(), and ProcessResponse().