source: arduino-1-6-7/trunk/fuentes/arduino-ide-amd64/libraries/Ethernet/src/Dns.h @ 46

Last change on this file since 46 was 46, checked in by jrpelegrina, 4 years ago

First release to Xenial

File size: 1.3 KB
Line 
1// Arduino DNS client for WizNet5100-based Ethernet shield
2// (c) Copyright 2009-2010 MCQN Ltd.
3// Released under Apache License, version 2.0
4
5#ifndef DNSClient_h
6#define DNSClient_h
7
8#include <EthernetUdp.h>
9
10class DNSClient
11{
12public:
13    // ctor
14    void begin(const IPAddress& aDNSServer);
15
16    /** Convert a numeric IP address string into a four-byte IP address.
17        @param aIPAddrString IP address to convert
18        @param aResult IPAddress structure to store the returned IP address
19        @result 1 if aIPAddrString was successfully converted to an IP address,
20                else error code
21    */
22    int inet_aton(const char *aIPAddrString, IPAddress& aResult);
23
24    /** Resolve the given hostname to an IP address.
25        @param aHostname Name to be resolved
26        @param aResult IPAddress structure to store the returned IP address
27        @result 1 if aIPAddrString was successfully converted to an IP address,
28                else error code
29    */
30    int getHostByName(const char* aHostname, IPAddress& aResult);
31
32protected:
33    uint16_t BuildRequest(const char* aName);
34    uint16_t ProcessResponse(uint16_t aTimeout, IPAddress& aAddress);
35
36    IPAddress iDNSServer;
37    uint16_t iRequestId;
38    EthernetUDP iUdp;
39};
40
41#endif
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