Diff: DnsClient.h

Revision:

9:a156d3de5647

Child:

18:8d5738a6646e

diff -r 4acb22344932 -r a156d3de5647 DnsClient.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DnsClient.h	Tue Aug 27 15:01:10 2019 +0000
@@ -0,0 +1,39 @@
+// Arduino DNS client for Enc28J60-based Ethernet shield
+// (c) Copyright 2009-2010 MCQN Ltd.
+// Released under Apache License, version 2.0
+#ifndef DNSClient_h
+#define DNSClient_h
+
+#include "UdpSocket.h"
+#include "IpAddress.h"
+
+class   DnsClient
+{
+public:
+    // ctor
+    void        begin(const IpAddress& aDNSServer);
+
+    /** Convert a numeric IP address string into a four-byte IP address.
+        @param aIPAddrString IP address to convert
+        @param aResult IPAddress structure to store the returned IP address
+        @result 1 if aIPAddrString was successfully converted to an IP address,
+                else error code
+    */
+    int         inet_aton(const char* aIPAddrString, IpAddress& aResult);
+
+    /** Resolve the given hostname to an IP address.
+        @param aHostname Name to be resolved
+        @param aResult IPAddress structure to store the returned IP address
+        @result 1 if aIPAddrString was successfully converted to an IP address,
+                else error code
+    */
+    int         getHostByName(const char* aHostname, IpAddress& aResult);
+protected:
+    uint16_t    buildRequest(const char* aName);
+    int16_t     processResponse(uint16_t aTimeout, IpAddress& aAddress);
+
+    IpAddress   iDNSServer;
+    uint16_t    iRequestId;
+    UdpSocket   iUdp;
+};
+#endif