filter out duplicate getblocks and don't relay inv messages during initial block download -- 0.2 rc2

git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@49 1a98c847-1fd6-4fd8-948a-caf3550aa51b

net.h

@@ -7,6 +7,7 @@ class CAddress;
 class CInv;
 class CRequestTracker;
 class CNode;
+class CBlockIndex;
 
 
 
@@ -504,6 +505,8 @@ public:
     map<uint256, CRequestTracker> mapRequests;
     CCriticalSection cs_mapRequests;
     uint256 hashContinue;
+    CBlockIndex* pindexLastGetBlocksBegin;
+    uint256 hashLastGetBlocksEnd;
 
     // flood
     vector<CAddress> vAddrToSend;
@@ -541,6 +544,8 @@ public:
         nRefCount = 0;
         nReleaseTime = 0;
         hashContinue = 0;
+        pindexLastGetBlocksBegin = 0;
+        hashLastGetBlocksEnd = 0;
         fGetAddr = false;
         vfSubscribe.assign(256, false);
 
@@ -635,6 +640,7 @@ public:
     }
 
 
+
     void BeginMessage(const char* pszCommand)
     {
         cs_vSend.Enter();
@@ -900,6 +906,7 @@ public:
 
 
 
+    void PushGetBlocks(CBlockIndex* pindexBegin, uint256 hashEnd);
     bool IsSubscribed(unsigned int nChannel);
     void Subscribe(unsigned int nChannel, unsigned int nHops=0);
     void CancelSubscribe(unsigned int nChannel);