Multicast DNS implementation (initial)

net/dns/mdns_query.h

Index: net/dns/mdns_query.h
diff --git a/net/dns/mdns_query.h b/net/dns/mdns_query.h
new file mode 100644
index 0000000000000000000000000000000000000000..79f15d5a35acab66e54120361b35aac11e51a6d2
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+++ b/net/dns/mdns_query.h
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+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_DNS_MDNS_QUERY_H__
+#define NET_DNS_MDNS_QUERY_H__
+
+#include <map>
+#include <string>
+
+#include "base/memory/ref_counted.h"
+#include "base/string_piece.h"
+#include "net/base/io_buffer.h"
+#include "net/dns/dns_protocol.h"
+#include "net/dns/record_parsed.h"
+
+namespace net {
+
+// Note: Currently this class is very similar to DnsQuery, but it is kept

[szym, 2013/05/24 15:32:22]

If, in this CL, DnsQuery is the superset of MDnsQuery, please use DnsQuery.

[Noam Samuel, 2013/05/24 21:59:18]

The one difference I see is that an MDns query should not set the RD flag. Does
it make sense to add a method to change the flags on a query?

+// separate to allow for adding known answers to the additional answer question.
+
+class MDnsQuery {
+ public:
+MDnsQuery(const base::StringPiece& qname, uint16 qtype);
+  ~MDnsQuery();
+
+  // TODO(noamsml): void AddAnswer();
+
+  IOBuffer* io_buffer() const { return io_buffer_.get(); }
+  unsigned size() const { return io_buffer_->size(); }
+
+ private:
+  scoped_refptr<IOBufferWithSize> io_buffer_;
+
+  DISALLOW_COPY_AND_ASSIGN(MDnsQuery);
+};
+}  // namespace net
+
+#endif  // NET_DNS_MDNS_QUERY_H__