Added --extended-response to put additional information into PTR responces.

cloud_print/gcp20/prototype/dns_sd_server.cc

Index: cloud_print/gcp20/prototype/dns_sd_server.cc
diff --git a/cloud_print/gcp20/prototype/dns_sd_server.cc b/cloud_print/gcp20/prototype/dns_sd_server.cc
index 85b3f8778d67e340e6a5c09ee566b8a755456c6f..f5500decd59c8b501ca0f25065c56a5edea5e6e9 100644
--- a/cloud_print/gcp20/prototype/dns_sd_server.cc
+++ b/cloud_print/gcp20/prototype/dns_sd_server.cc
@@ -101,7 +101,7 @@ void DnsSdServer::UpdateMetadata(const std::vector<std::string>& metadata) {
   if (!CommandLine::ForCurrentProcess()->HasSwitch("no-announcement")) {
     DnsResponseBuilder builder(current_ttl);
 
-    builder.AppendTxt(serv_params_.service_name_, current_ttl, metadata_);
+    builder.AppendTxt(serv_params_.service_name_, current_ttl, metadata_, true);
     scoped_refptr<net::IOBufferWithSize> buffer(builder.Build());
 
     DCHECK(buffer.get() != NULL);
@@ -203,7 +203,20 @@ void DnsSdServer::ProccessQuery(uint32 current_ttl, const DnsQueryRecord& query,
       if (query.qname == serv_params_.service_type_ ||
           query.qname == serv_params_.secondary_service_type_) {
         builder->AppendPtr(query.qname, current_ttl,
-                           serv_params_.service_name_);
+                           serv_params_.service_name_, true);
+
+        if (CommandLine::ForCurrentProcess()->HasSwitch("extended-response")) {
+          builder->AppendSrv(serv_params_.service_name_, current_ttl,
+                             kSrvPriority, kSrvWeight, serv_params_.http_port_,
+                             serv_params_.service_domain_name_, false);
+          builder->AppendA(serv_params_.service_domain_name_, current_ttl,
+                           serv_params_.http_ipv4_, false);
+          builder->AppendAAAA(serv_params_.service_domain_name_, current_ttl,
+                              serv_params_.http_ipv6_, false);
+          builder->AppendTxt(serv_params_.service_name_, current_ttl, metadata_,
+                             false);
+        }
+
         responded = true;
       }
 
@@ -213,7 +226,7 @@ void DnsSdServer::ProccessQuery(uint32 current_ttl, const DnsQueryRecord& query,
       if (query.qname == serv_params_.service_name_) {
         builder->AppendSrv(serv_params_.service_name_, current_ttl,
                            kSrvPriority, kSrvWeight, serv_params_.http_port_,
-                           serv_params_.service_domain_name_);
+                           serv_params_.service_domain_name_, true);
         responded = true;
       }
       break;
@@ -221,14 +234,23 @@ void DnsSdServer::ProccessQuery(uint32 current_ttl, const DnsQueryRecord& query,
       log = "Processing A query";
       if (query.qname == serv_params_.service_domain_name_) {
         builder->AppendA(serv_params_.service_domain_name_, current_ttl,
-                         serv_params_.http_ipv4_);
+                         serv_params_.http_ipv4_, true);
+        responded = true;
+      }
+      break;
+    case net::dns_protocol::kTypeAAAA:
+      log = "Processing AAAA query";
+      if (query.qname == serv_params_.service_domain_name_) {
+        builder->AppendAAAA(serv_params_.service_domain_name_, current_ttl,
+                            serv_params_.http_ipv6_, true);
         responded = true;
       }
       break;
     case net::dns_protocol::kTypeTXT:
       log = "Processing TXT query";
       if (query.qname == serv_params_.service_name_) {
-        builder->AppendTxt(serv_params_.service_name_, current_ttl, metadata_);
+        builder->AppendTxt(serv_params_.service_name_, current_ttl, metadata_,
+                           true);
         responded = true;
       }
       break;
@@ -261,15 +283,18 @@ void DnsSdServer::SendAnnouncement(uint32 ttl) {
     DnsResponseBuilder builder(ttl);
 
     builder.AppendPtr(serv_params_.service_type_, ttl,
-                      serv_params_.service_name_);
+                     serv_params_.service_name_, true);
     builder.AppendPtr(serv_params_.secondary_service_type_, ttl,
-                      serv_params_.service_name_);
-    builder.AppendSrv(serv_params_.service_name_, ttl, kSrvPriority, kSrvWeight,
-                      serv_params_.http_port_,
-                      serv_params_.service_domain_name_);
+                      serv_params_.service_name_, true);
+    builder.AppendSrv(serv_params_.service_name_, ttl, kSrvPriority,
+                      kSrvWeight, serv_params_.http_port_,
+                      serv_params_.service_domain_name_, true);
     builder.AppendA(serv_params_.service_domain_name_, ttl,
-                    serv_params_.http_ipv4_);
-    builder.AppendTxt(serv_params_.service_name_, ttl, metadata_);
+                    serv_params_.http_ipv4_, true);
+    builder.AppendAAAA(serv_params_.service_domain_name_, ttl,
+                       serv_params_.http_ipv6_, true);
+    builder.AppendTxt(serv_params_.service_name_, ttl, metadata_, true);
+
     scoped_refptr<net::IOBufferWithSize> buffer(builder.Build());
 
     DCHECK(buffer.get() != NULL);