github.com/mandrigin/go-ethereum@v1.7.4-0.20180116162341-02aeb3d76652/les/helper_test.go (about) 1 // Copyright 2016 The go-ethereum Authors 2 // This file is part of the go-ethereum library. 3 // 4 // The go-ethereum library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-ethereum library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17 // This file contains some shares testing functionality, common to multiple 18 // different files and modules being tested. 19 20 package les 21 22 import ( 23 "crypto/rand" 24 "math/big" 25 "sync" 26 "testing" 27 28 "github.com/ethereum/go-ethereum/common" 29 "github.com/ethereum/go-ethereum/consensus/ethash" 30 "github.com/ethereum/go-ethereum/core" 31 "github.com/ethereum/go-ethereum/core/types" 32 "github.com/ethereum/go-ethereum/core/vm" 33 "github.com/ethereum/go-ethereum/crypto" 34 "github.com/ethereum/go-ethereum/ethdb" 35 "github.com/ethereum/go-ethereum/event" 36 "github.com/ethereum/go-ethereum/les/flowcontrol" 37 "github.com/ethereum/go-ethereum/light" 38 "github.com/ethereum/go-ethereum/p2p" 39 "github.com/ethereum/go-ethereum/p2p/discover" 40 "github.com/ethereum/go-ethereum/params" 41 ) 42 43 var ( 44 testBankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") 45 testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey) 46 testBankFunds = big.NewInt(1000000000000000000) 47 48 acc1Key, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") 49 acc2Key, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee") 50 acc1Addr = crypto.PubkeyToAddress(acc1Key.PublicKey) 51 acc2Addr = crypto.PubkeyToAddress(acc2Key.PublicKey) 52 53 testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056") 54 testContractAddr common.Address 55 testContractCodeDeployed = testContractCode[16:] 56 testContractDeployed = uint64(2) 57 58 testBufLimit = uint64(100) 59 ) 60 61 /* 62 contract test { 63 64 uint256[100] data; 65 66 function Put(uint256 addr, uint256 value) { 67 data[addr] = value; 68 } 69 70 function Get(uint256 addr) constant returns (uint256 value) { 71 return data[addr]; 72 } 73 } 74 */ 75 76 func testChainGen(i int, block *core.BlockGen) { 77 signer := types.HomesteadSigner{} 78 79 switch i { 80 case 0: 81 // In block 1, the test bank sends account #1 some ether. 82 tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), params.TxGas, nil, nil), signer, testBankKey) 83 block.AddTx(tx) 84 case 1: 85 // In block 2, the test bank sends some more ether to account #1. 86 // acc1Addr passes it on to account #2. 87 // acc1Addr creates a test contract. 88 tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), params.TxGas, nil, nil), signer, testBankKey) 89 nonce := block.TxNonce(acc1Addr) 90 tx2, _ := types.SignTx(types.NewTransaction(nonce, acc2Addr, big.NewInt(1000), params.TxGas, nil, nil), signer, acc1Key) 91 nonce++ 92 tx3, _ := types.SignTx(types.NewContractCreation(nonce, big.NewInt(0), 200000, big.NewInt(0), testContractCode), signer, acc1Key) 93 testContractAddr = crypto.CreateAddress(acc1Addr, nonce) 94 block.AddTx(tx1) 95 block.AddTx(tx2) 96 block.AddTx(tx3) 97 case 2: 98 // Block 3 is empty but was mined by account #2. 99 block.SetCoinbase(acc2Addr) 100 block.SetExtra([]byte("yeehaw")) 101 data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001") 102 tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), testContractAddr, big.NewInt(0), 100000, nil, data), signer, testBankKey) 103 block.AddTx(tx) 104 case 3: 105 // Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data). 106 b2 := block.PrevBlock(1).Header() 107 b2.Extra = []byte("foo") 108 block.AddUncle(b2) 109 b3 := block.PrevBlock(2).Header() 110 b3.Extra = []byte("foo") 111 block.AddUncle(b3) 112 data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002") 113 tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), testContractAddr, big.NewInt(0), 100000, nil, data), signer, testBankKey) 114 block.AddTx(tx) 115 } 116 } 117 118 func testRCL() RequestCostList { 119 cl := make(RequestCostList, len(reqList)) 120 for i, code := range reqList { 121 cl[i].MsgCode = code 122 cl[i].BaseCost = 0 123 cl[i].ReqCost = 0 124 } 125 return cl 126 } 127 128 // newTestProtocolManager creates a new protocol manager for testing purposes, 129 // with the given number of blocks already known, and potential notification 130 // channels for different events. 131 func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *core.BlockGen), peers *peerSet, odr *LesOdr, db ethdb.Database) (*ProtocolManager, error) { 132 var ( 133 evmux = new(event.TypeMux) 134 engine = ethash.NewFaker() 135 gspec = core.Genesis{ 136 Config: params.TestChainConfig, 137 Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}, 138 } 139 genesis = gspec.MustCommit(db) 140 chain BlockChain 141 ) 142 if peers == nil { 143 peers = newPeerSet() 144 } 145 146 if lightSync { 147 chain, _ = light.NewLightChain(odr, gspec.Config, engine) 148 } else { 149 blockchain, _ := core.NewBlockChain(db, gspec.Config, engine, vm.Config{}) 150 gchain, _ := core.GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, blocks, generator) 151 if _, err := blockchain.InsertChain(gchain); err != nil { 152 panic(err) 153 } 154 chain = blockchain 155 } 156 157 var protocolVersions []uint 158 if lightSync { 159 protocolVersions = ClientProtocolVersions 160 } else { 161 protocolVersions = ServerProtocolVersions 162 } 163 pm, err := NewProtocolManager(gspec.Config, lightSync, protocolVersions, NetworkId, evmux, engine, peers, chain, nil, db, odr, nil, make(chan struct{}), new(sync.WaitGroup)) 164 if err != nil { 165 return nil, err 166 } 167 if !lightSync { 168 srv := &LesServer{protocolManager: pm} 169 pm.server = srv 170 171 srv.defParams = &flowcontrol.ServerParams{ 172 BufLimit: testBufLimit, 173 MinRecharge: 1, 174 } 175 176 srv.fcManager = flowcontrol.NewClientManager(50, 10, 1000000000) 177 srv.fcCostStats = newCostStats(nil) 178 } 179 pm.Start() 180 return pm, nil 181 } 182 183 // newTestProtocolManagerMust creates a new protocol manager for testing purposes, 184 // with the given number of blocks already known, and potential notification 185 // channels for different events. In case of an error, the constructor force- 186 // fails the test. 187 func newTestProtocolManagerMust(t *testing.T, lightSync bool, blocks int, generator func(int, *core.BlockGen), peers *peerSet, odr *LesOdr, db ethdb.Database) *ProtocolManager { 188 pm, err := newTestProtocolManager(lightSync, blocks, generator, peers, odr, db) 189 if err != nil { 190 t.Fatalf("Failed to create protocol manager: %v", err) 191 } 192 return pm 193 } 194 195 // testPeer is a simulated peer to allow testing direct network calls. 196 type testPeer struct { 197 net p2p.MsgReadWriter // Network layer reader/writer to simulate remote messaging 198 app *p2p.MsgPipeRW // Application layer reader/writer to simulate the local side 199 *peer 200 } 201 202 // newTestPeer creates a new peer registered at the given protocol manager. 203 func newTestPeer(t *testing.T, name string, version int, pm *ProtocolManager, shake bool) (*testPeer, <-chan error) { 204 // Create a message pipe to communicate through 205 app, net := p2p.MsgPipe() 206 207 // Generate a random id and create the peer 208 var id discover.NodeID 209 rand.Read(id[:]) 210 211 peer := pm.newPeer(version, NetworkId, p2p.NewPeer(id, name, nil), net) 212 213 // Start the peer on a new thread 214 errc := make(chan error, 1) 215 go func() { 216 select { 217 case pm.newPeerCh <- peer: 218 errc <- pm.handle(peer) 219 case <-pm.quitSync: 220 errc <- p2p.DiscQuitting 221 } 222 }() 223 tp := &testPeer{ 224 app: app, 225 net: net, 226 peer: peer, 227 } 228 // Execute any implicitly requested handshakes and return 229 if shake { 230 td, head, genesis := pm.blockchain.Status() 231 headNum := pm.blockchain.CurrentHeader().Number.Uint64() 232 tp.handshake(t, td, head, headNum, genesis) 233 } 234 return tp, errc 235 } 236 237 func newTestPeerPair(name string, version int, pm, pm2 *ProtocolManager) (*peer, <-chan error, *peer, <-chan error) { 238 // Create a message pipe to communicate through 239 app, net := p2p.MsgPipe() 240 241 // Generate a random id and create the peer 242 var id discover.NodeID 243 rand.Read(id[:]) 244 245 peer := pm.newPeer(version, NetworkId, p2p.NewPeer(id, name, nil), net) 246 peer2 := pm2.newPeer(version, NetworkId, p2p.NewPeer(id, name, nil), app) 247 248 // Start the peer on a new thread 249 errc := make(chan error, 1) 250 errc2 := make(chan error, 1) 251 go func() { 252 select { 253 case pm.newPeerCh <- peer: 254 errc <- pm.handle(peer) 255 case <-pm.quitSync: 256 errc <- p2p.DiscQuitting 257 } 258 }() 259 go func() { 260 select { 261 case pm2.newPeerCh <- peer2: 262 errc2 <- pm2.handle(peer2) 263 case <-pm2.quitSync: 264 errc2 <- p2p.DiscQuitting 265 } 266 }() 267 return peer, errc, peer2, errc2 268 } 269 270 // handshake simulates a trivial handshake that expects the same state from the 271 // remote side as we are simulating locally. 272 func (p *testPeer) handshake(t *testing.T, td *big.Int, head common.Hash, headNum uint64, genesis common.Hash) { 273 var expList keyValueList 274 expList = expList.add("protocolVersion", uint64(p.version)) 275 expList = expList.add("networkId", uint64(NetworkId)) 276 expList = expList.add("headTd", td) 277 expList = expList.add("headHash", head) 278 expList = expList.add("headNum", headNum) 279 expList = expList.add("genesisHash", genesis) 280 sendList := make(keyValueList, len(expList)) 281 copy(sendList, expList) 282 expList = expList.add("serveHeaders", nil) 283 expList = expList.add("serveChainSince", uint64(0)) 284 expList = expList.add("serveStateSince", uint64(0)) 285 expList = expList.add("txRelay", nil) 286 expList = expList.add("flowControl/BL", testBufLimit) 287 expList = expList.add("flowControl/MRR", uint64(1)) 288 expList = expList.add("flowControl/MRC", testRCL()) 289 290 if err := p2p.ExpectMsg(p.app, StatusMsg, expList); err != nil { 291 t.Fatalf("status recv: %v", err) 292 } 293 if err := p2p.Send(p.app, StatusMsg, sendList); err != nil { 294 t.Fatalf("status send: %v", err) 295 } 296 297 p.fcServerParams = &flowcontrol.ServerParams{ 298 BufLimit: testBufLimit, 299 MinRecharge: 1, 300 } 301 } 302 303 // close terminates the local side of the peer, notifying the remote protocol 304 // manager of termination. 305 func (p *testPeer) close() { 306 p.app.Close() 307 }