Finished DNS-SD server. Finished Privet-specified DNS-SD server.

cloud_print/gcp20/prototype/dns_response_builder.h

Index: cloud_print/gcp20/prototype/dns_response_builder.h
diff --git a/cloud_print/gcp20/prototype/dns_response_builder.h b/cloud_print/gcp20/prototype/dns_response_builder.h
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+// Copyright 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 CLOUD_PRINT_GCP20_PROTOTYPE_DNS_RESPONSE_BUILDER_H_
+#define CLOUD_PRINT_GCP20_PROTOTYPE_DNS_RESPONSE_BUILDER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "net/base/net_util.h"
+#include "net/dns/dns_protocol.h"
+
+namespace net {
+  class IOBufferWithSize;
+}
+
+// Record for storing response data.
+struct DnsResponseRecord {
+  DnsResponseRecord();
+  ~DnsResponseRecord();
+
+  std::string name;  // in dotted form
+  uint16 type;
+  uint16 klass;
+  uint32 ttl;
+  std::string rdata;
+};
+
+// Class for building service-specified responses.
+class DnsResponseBuilder {
+ public:
+  // Initializes builder.
+  explicit DnsResponseBuilder(uint16 id);
+
+  // Destroys the object.
+  ~DnsResponseBuilder() {}
+
+  // Methods for appending different types of responses to packet.
+  void AppendPtr(const std::string& service_type, uint32 ttl,
+                 const std::string& service_name);
+  void AppendSrv(const std::string& service_name, uint32 ttl, uint16 priority,
+                 uint16 weight, uint16 http_port,
+                 const std::string& service_domain_name);
+  void AppendA(const std::string& service_domain_name, uint32 ttl,
+               net::IPAddressNumber http_ipv4);
+  void AppendTxt(const std::string& service_name, uint32 ttl,
+                 const std::vector<std::string>& metadata);
+
+  // Serializes packet to byte sequence.
+  scoped_refptr<net::IOBufferWithSize> Build();
+
+ private:
+  // Appends response to packet.
+  void AddResponse(const std::string& name, uint16 type, uint32 ttl,
+                   const std::string& rdata);
+
+  std::vector<DnsResponseRecord> responses_;
+
+  // Header of response package.
+  net::dns_protocol::Header header_;
+
+  DISALLOW_COPY_AND_ASSIGN(DnsResponseBuilder);
+};
+
+#endif  // CLOUD_PRINT_GCP20_PROTOTYPE_DNS_RESPONSE_BUILDER_H_
+