don't enforce maxuploadtargets disconnect for whitelisted peers

qa/rpc-tests/maxuploadtarget.py

@@ -245,5 +245,38 @@ class MaxUploadTest(BitcoinTestFramework):
 
         [c.disconnect_node() for c in connections]
 
+        #stop and start node 0 with 1MB maxuploadtarget, whitelist 127.0.0.1
+        print "Restarting nodes with -whitelist=127.0.0.1"
+        stop_node(self.nodes[0], 0)
+        self.nodes[0] = start_node(0, self.options.tmpdir, ["-debug", "-whitelist=127.0.0.1", "-maxuploadtarget=1", "-blockmaxsize=999000"])
+
+        #recreate/reconnect 3 test nodes
+        test_nodes = []
+        connections = []
+
+        for i in xrange(3):
+            test_nodes.append(TestNode())
+            connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], test_nodes[i]))
+            test_nodes[i].add_connection(connections[i])
+
+        NetworkThread().start() # Start up network handling in another thread
+        [x.wait_for_verack() for x in test_nodes]
+
+        #retrieve 20 blocks which should be enough to break the 1MB limit
+        getdata_request.inv = [CInv(2, big_new_block)]
+        for i in xrange(20):
+            test_nodes[1].send_message(getdata_request)
+            test_nodes[1].sync_with_ping()
+            assert_equal(test_nodes[1].block_receive_map[big_new_block], i+1)
+
+        getdata_request.inv = [CInv(2, big_old_block)]
+        test_nodes[1].send_message(getdata_request)
+        test_nodes[1].wait_for_disconnect()
+        assert_equal(len(self.nodes[0].getpeerinfo()), 3) #node is still connected because of the whitelist
+
+        print "Peer 1 still connected after trying to download old block (whitelisted)"
+
+        [c.disconnect_node() for c in connections]
+
 if __name__ == '__main__':
     MaxUploadTest().main()

src/main.cpp

@@ -3867,8 +3867,9 @@ void static ProcessGetData(CNode* pfrom, const Consensus::Params& consensusParam
                     }
                 }
                 // disconnect node in case we have reached the outbound limit for serving historical blocks
+                // never disconnect whitelisted nodes
                 static const int nOneWeek = 7 * 24 * 60 * 60; // assume > 1 week = historical
-                if (send && CNode::OutboundTargetReached(true) && ( ((pindexBestHeader != NULL) && (pindexBestHeader->GetBlockTime() - mi->second->GetBlockTime() > nOneWeek)) || inv.type == MSG_FILTERED_BLOCK) )
+                if (send && CNode::OutboundTargetReached(true) && ( ((pindexBestHeader != NULL) && (pindexBestHeader->GetBlockTime() - mi->second->GetBlockTime() > nOneWeek)) || inv.type == MSG_FILTERED_BLOCK) && !pfrom->fWhitelisted)
                 {
                     LogPrint("net", "historical block serving limit reached, disconnect peer=%d\n", pfrom->GetId());