rpc: add validatorscount to getversion response

See neo-project/neo-modules#642.

pkg/rpc/response/result/version.go

@@ -31,6 +31,7 @@ type (
 		MaxValidUntilBlockIncrement uint32        `json:"maxvaliduntilblockincrement"`
 		MaxTransactionsPerBlock     uint16        `json:"maxtransactionsperblock"`
 		MemoryPoolMaxTransactions   int           `json:"memorypoolmaxtransactions"`
+		ValidatorsCount             byte          `json:"validatorscount"`
 		InitialGasDistribution      fixedn.Fixed8 `json:"initialgasdistribution"`
 		// StateRootInHeader is true if state root is contained in block header.
 		StateRootInHeader bool `json:"staterootinheader,omitempty"`

pkg/rpc/server/server.go

@@ -536,6 +536,7 @@ func (s *Server) getVersion(_ request.Params) (interface{}, *response.Error) {
 			MaxValidUntilBlockIncrement: cfg.MaxValidUntilBlockIncrement,
 			MaxTransactionsPerBlock:     cfg.MaxTransactionsPerBlock,
 			MemoryPoolMaxTransactions:   cfg.MemPoolSize,
+			ValidatorsCount:             byte(cfg.ValidatorsCount),
 			InitialGasDistribution:      cfg.InitialGASSupply,
 			StateRootInHeader:           cfg.StateRootInHeader,
 		},

pkg/rpc/server/server_test.go

@@ -699,6 +699,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 				require.EqualValues(t, cfg.MaxValidUntilBlockIncrement, resp.Protocol.MaxValidUntilBlockIncrement)
 				require.EqualValues(t, cfg.MaxTransactionsPerBlock, resp.Protocol.MaxTransactionsPerBlock)
 				require.EqualValues(t, cfg.MemPoolSize, resp.Protocol.MemoryPoolMaxTransactions)
+				require.EqualValues(t, cfg.ValidatorsCount, resp.Protocol.ValidatorsCount)
 				require.EqualValues(t, cfg.InitialGASSupply, resp.Protocol.InitialGasDistribution)
 				require.EqualValues(t, false, resp.Protocol.StateRootInHeader)
 			},