DnsClient refactoring + features (timeout, suffix search, server rotation).

net/dns/dns_response.h

Index: net/dns/dns_response.h
diff --git a/net/dns/dns_response.h b/net/dns/dns_response.h
index ddd2c2089439ad47997ec4435982e9c4f0e9c207..7984a58f7450aba4ebeea59a4a0942812157c2f6 100644
--- a/net/dns/dns_response.h
+++ b/net/dns/dns_response.h
@@ -51,6 +51,9 @@ class NET_EXPORT_PRIVATE DnsRecordParser {
   // Returns |true| if no more bytes remain in the packet.
   bool AtEnd() const { return cur_ == packet_ + length_; }
 
+  // Returns current offset into the packet.
+  size_t offset() const { return cur_ - packet_; }
+
   // Parses a (possibly compressed) DNS name from the packet starting at
   // |pos|. Stores output (even partial) in |out| unless |out| is NULL. |out|
   // is stored in the dotted form, e.g., "example.com". Returns number of bytes
@@ -92,11 +95,17 @@ class NET_EXPORT_PRIVATE DnsResponse {
   bool InitParse(int nbytes, const DnsQuery& query);
 
   // Accessors for the header.
-  uint8 flags0() const;  // first byte of flags
-  uint8 flags1() const;  // second byte of flags excluding rcode
+  uint16 flags() const;  // excluding rcode
   uint8 rcode() const;
   int answer_count() const;
 
+  // Accessors to the question. The qname is unparsed.
+  base::StringPiece qname() const;
+  uint16 qtype() const;
+
+  // Returns qname in dotted format.
+  std::string GetDottedName() const;
+
   // Returns an iterator to the resource records in the answer section. Must be
   // called after InitParse. The iterator is valid only in the scope of the
   // DnsResponse.