Refactored to make MDnsSocketFactory return array of sockets.

net/dns/mdns_client.h

 // 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 NET_DNS_MDNS_CLIENT_H_
 #define NET_DNS_MDNS_CLIENT_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "net/base/ip_endpoint.h"
 #include "net/dns/dns_query.h"
 #include "net/dns/dns_response.h"
 #include "net/dns/record_parsed.h"
 
 namespace net {
 
+class DatagramServerSocket;
 class RecordParsed;
 
 // Represents a one-time record lookup. A transaction takes one
 // associated callback (see |MDnsClient::CreateTransaction|) and calls it
 // whenever a matching record has been found, either from the cache or
 // by querying the network (it may choose to query either or both based on its
 // creation flags, see MDnsTransactionFlags). Network-based transactions will
 // time out after a reasonable number of seconds.
 class NET_EXPORT MDnsTransaction {
  public:
@@ skipping 84 matching lines @@
   virtual bool Start() = 0;
 
   // Get the host or service name for this query.
   // Return an empty string for no name.
   virtual const std::string& GetName() const = 0;
 
   // Get the type for this query (SRV, TXT, A, AAA, etc)
   virtual uint16 GetType() const = 0;
 };
 
+// Creates bound datagram sockets ready to use by MDnsClient.
+class NET_EXPORT MDnsSocketFactory {
+ public:
+  virtual ~MDnsSocketFactory() {}
+  virtual void CreateSockets(ScopedVector<DatagramServerSocket>* sockets) = 0;
+
+  static scoped_ptr<MDnsSocketFactory> CreateDefault();
+};
+
 // Listens for Multicast DNS on the local network. You can access information
 // regarding multicast DNS either by creating an |MDnsListener| to be notified
 // of new records, or by creating an |MDnsTransaction| to look up the value of a
 // specific records. When all listeners and active transactions are destroyed,
 // the client stops listening on the network and destroys the cache.
 class NET_EXPORT MDnsClient {
  public:
   virtual ~MDnsClient() {}
 
   // Create listener object for RRType |rrtype| and name |name|.
   virtual scoped_ptr<MDnsListener> CreateListener(
       uint16 rrtype,
       const std::string& name,
       MDnsListener::Delegate* delegate) = 0;
 
   // Create a transaction that can be used to query either the MDns cache, the
   // network, or both for records of type |rrtype| and name |name|. |flags| is
   // defined by MDnsTransactionFlags.
   virtual scoped_ptr<MDnsTransaction> CreateTransaction(
       uint16 rrtype,
       const std::string& name,
       int flags,
       const MDnsTransaction::ResultCallback& callback) = 0;
 
-  virtual bool StartListening() = 0;
+  virtual bool StartListening(MDnsSocketFactory* factory) = 0;
 
   // Do not call this inside callbacks from related MDnsListener and
   // MDnsTransaction objects.
   virtual void StopListening() = 0;
   virtual bool IsListening() const = 0;
 
   // Create the default MDnsClient
   static scoped_ptr<MDnsClient> CreateDefault();
 };
 
 IPEndPoint NET_EXPORT GetMDnsIPEndPoint(AddressFamily address_family);
 
 }  // namespace net
 #endif  // NET_DNS_MDNS_CLIENT_H_