network: allow single-node privnet setup

.docker/docker-compose.yml

@@ -69,3 +69,19 @@ services:
       -  20336:20336
       -  30336:30336
       -  20004:20004
+  node_single:
+    container_name: neo_go_node_single
+    image: env_neo_go_image
+    command: "node --config-path /config --privnet"
+    volumes:
+      - ../config/protocol.privnet.docker.single.yml:/config/protocol.privnet.yml
+      - volume_chain:/chains
+      - ./1600-privnet-blocks-single.acc.gz:/privnet-blocks.acc.gz
+    networks:
+      neo_go_network:
+        ipv4_address: 172.200.0.1
+    ports:
+      -  20333:20333
+      -  30333:30333
+      -  20001:20001
+

Makefile

@@ -107,6 +107,10 @@ env_up:
 	@echo "=> Bootup environment"
 	@docker-compose -f $(DC_FILE) up -d node_one node_two node_three node_four
 
+env_single:
+	@echo "=> Bootup environment"
+	@docker-compose -f $(DC_FILE) up -d node_single
+
 env_down:
 	@echo "=> Stop environment"
 	@docker-compose -f $(DC_FILE) down

config/protocol.privnet.docker.single.yml

@@ -0,0 +1,53 @@
+ProtocolConfiguration:
+  Magic: 56753
+  AddressVersion: 23
+  SecondsPerBlock: 1
+  LowPriorityThreshold: 0.001
+  StandbyValidators:
+    - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
+  SeedList:
+    - 172.200.0.1:20333
+  SystemFee:
+    EnrollmentTransaction: 1000
+    IssueTransaction: 500
+    PublishTransaction: 500
+    RegisterTransaction: 10000
+  VerifyBlocks: true
+  VerifyTransactions: true
+
+ApplicationConfiguration:
+  # LogPath could be set up in case you need stdout logs to some proper file.
+  # LogPath: "./log/neogo.log"
+  DBConfiguration:
+    Type: "leveldb" #other options: 'inmemory','redis','boltdb'.
+    # DB type options. Uncomment those you need in case you want to switch DB type.
+    LevelDBOptions:
+      DataDirectoryPath: "/chains/single"
+  #    RedisDBOptions:
+  #      Addr: "localhost:6379"
+  #      Password: ""
+  #      DB: 0
+  #    BoltDBOptions:
+  #      FilePath: "./chains/privnet.bolt"
+  #  Uncomment in order to set up custom address for node.
+  #  Address: 127.0.0.1
+  NodePort: 20333
+  Relay: true
+  DialTimeout: 3
+  ProtoTickInterval: 2
+  MaxPeers: 10
+  AttemptConnPeers: 5
+  MinPeers: 0
+  RPC:
+    Enabled: true
+    EnableCORSWorkaround: false
+    Port: 30333
+  Prometheus:
+    Enabled: true
+    Port: 20001
+  Pprof:
+    Enabled: false
+    Port: 20011
+  UnlockWallet:
+    Path: "6PYLmjBYJ4wQTCEfqvnznGJwZeW9pfUcV5m5oreHxqryUgqKpTRAFt9L8Y"
+    Password: "one"

pkg/network/server.go

@@ -117,7 +117,7 @@ func NewServer(config ServerConfig, chain core.Blockchainer, log *zap.Logger) *S
 
 	s.consensus = srv
 
-	if s.MinPeers <= 0 {
+	if s.MinPeers < 0 {
 		s.log.Info("bad MinPeers configured, using the default value",
 			zap.Int("configured", s.MinPeers),
 			zap.Int("actual", defaultMinPeers))
@@ -158,6 +158,8 @@ func (s *Server) Start(errChan chan error) {
 		zap.Uint32("blockHeight", s.chain.BlockHeight()),
 		zap.Uint32("headerHeight", s.chain.HeaderHeight()))
 
+	s.tryStartConsensus()
+
 	s.discovery.BackFill(s.Seeds...)
 
 	go s.bQueue.run()

pkg/smartcontract/contract.go

@@ -12,7 +12,7 @@ import (
 
 // CreateMultiSigRedeemScript creates a script runnable by the VM.
 func CreateMultiSigRedeemScript(m int, publicKeys keys.PublicKeys) ([]byte, error) {
-	if m <= 1 {
+	if m < 1 {
 		return nil, fmt.Errorf("param m cannot be smaller or equal to 1 got %d", m)
 	}
 	if m > len(publicKeys) {