Diff: dnsresolve.h

Revision:

0:83c60912e03f

Child:

1:3a3015287572

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dnsresolve.h	Fri Jan 07 21:45:38 2011 +0000
@@ -0,0 +1,59 @@
+#ifndef __DNSRESOLVE_H__
+#define __DNSRESOLVE_H__
+
+#include "DNSRequest.h"
+
+class DNSResolver {
+public:
+    DNSResolver() {
+        _request=new DNSRequest();
+        _request->setOnReply(this, &DNSResolver::onReply);
+    };
+
+    ~DNSResolver() {
+        delete _request;
+    };
+
+    IpAddr resolveName(const char* name) {
+        _completed=0;
+        IpAddr addr;
+
+        DNSRequestErr r=_request->resolve(name);
+        if (0!=r) {
+            _request->close();
+            return addr;
+        }
+
+        Timer tmr;
+        tmr.start();
+        while (0==_completed) {
+            Net::poll();
+            wait(0.1);
+            if (tmr.read()>5)
+                break;
+        }
+
+        if (-1==_completed) {
+            _request->close();
+            return addr;
+        }
+
+        _request->getResult(&addr);
+        _request->close();
+        return addr;
+    };
+
+    void onReply(DNSReply reply) {
+        if (reply==DNS_FOUND)
+            _completed=1;
+        else
+            _completed=-1;
+    };
+
+private:
+    DNSRequest *_request;
+    int _completed; // -1=err,0=running,1=ok
+};
+
+
+#endif
\ No newline at end of file