package eth import ( "crypto/rand" "math/big" "sync" "testing" "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" "github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p/discover" ) func init() { // glog.SetToStderr(true) // glog.SetV(6) } var testAccount = crypto.NewKey(rand.Reader) func TestStatusMsgErrors(t *testing.T) { pm := newProtocolManagerForTesting(nil) td, currentBlock, genesis := pm.chainman.Status() defer pm.Stop() tests := []struct { code uint64 data interface{} wantError error }{ { code: TxMsg, data: []interface{}{}, wantError: errResp(ErrNoStatusMsg, "first msg has code 2 (!= 0)"), }, { code: StatusMsg, data: statusData{10, NetworkId, td, currentBlock, genesis}, wantError: errResp(ErrProtocolVersionMismatch, "10 (!= 0)"), }, { code: StatusMsg, data: statusData{uint32(ProtocolVersions[0]), 999, td, currentBlock, genesis}, wantError: errResp(ErrNetworkIdMismatch, "999 (!= 0)"), }, { code: StatusMsg, data: statusData{uint32(ProtocolVersions[0]), NetworkId, td, currentBlock, common.Hash{3}}, wantError: errResp(ErrGenesisBlockMismatch, "0300000000000000000000000000000000000000000000000000000000000000 (!= %x)", genesis), }, } for i, test := range tests { p, errc := newTestPeer(pm) // The send call might hang until reset because // the protocol might not read the payload. go p2p.Send(p, test.code, test.data) select { case err := <-errc: if err == nil { t.Errorf("test %d: protocol returned nil error, want %q", test.wantError) } else if err.Error() != test.wantError.Error() { t.Errorf("test %d: wrong error: got %q, want %q", i, err, test.wantError) } case <-time.After(2 * time.Second): t.Errorf("protocol did not shut down withing 2 seconds") } p.close() } } // This test checks that received transactions are added to the local pool. func TestRecvTransactions(t *testing.T) { txAdded := make(chan []*types.Transaction) pm := newProtocolManagerForTesting(txAdded) p, _ := newTestPeer(pm) defer pm.Stop() defer p.close() p.handshake(t) tx := newtx(testAccount, 0, 0) if err := p2p.Send(p, TxMsg, []interface{}{tx}); err != nil { t.Fatalf("send error: %v", err) } select { case added := <-txAdded: if len(added) != 1 { t.Errorf("wrong number of added transactions: got %d, want 1", len(added)) } else if added[0].Hash() != tx.Hash() { t.Errorf("added wrong tx hash: got %v, want %v", added[0].Hash(), tx.Hash()) } case <-time.After(2 * time.Second): t.Errorf("no TxPreEvent received within 2 seconds") } } // This test checks that pending transactions are sent. func TestSendTransactions(t *testing.T) { pm := newProtocolManagerForTesting(nil) defer pm.Stop() // Fill the pool with big transactions. const txsize = txsyncPackSize / 10 alltxs := make([]*types.Transaction, 100) for nonce := range alltxs { alltxs[nonce] = newtx(testAccount, uint64(nonce), txsize) } pm.txpool.AddTransactions(alltxs) // Connect several peers. They should all receive the pending transactions. var wg sync.WaitGroup checktxs := func(p *testPeer) { defer wg.Done() defer p.close() seen := make(map[common.Hash]bool) for _, tx := range alltxs { seen[tx.Hash()] = false } for n := 0; n < len(alltxs) && !t.Failed(); { var txs []*types.Transaction msg, err := p.ReadMsg() if err != nil { t.Errorf("%v: read error: %v", p.Peer, err) } else if msg.Code != TxMsg { t.Errorf("%v: got code %d, want TxMsg", p.Peer, msg.Code) } if err := msg.Decode(&txs); err != nil { t.Errorf("%v: %v", p.Peer, err) } for _, tx := range txs { hash := tx.Hash() seentx, want := seen[hash] if seentx { t.Errorf("%v: got tx more than once: %x", p.Peer, hash) } if !want { t.Errorf("%v: got unexpected tx: %x", p.Peer, hash) } seen[hash] = true n++ } } } for i := 0; i < 3; i++ { p, _ := newTestPeer(pm) p.handshake(t) wg.Add(1) go checktxs(p) } wg.Wait() } // testPeer wraps all peer-related data for tests. type testPeer struct { p2p.MsgReadWriter // writing to the test peer feeds the protocol pipe *p2p.MsgPipeRW // the protocol read/writes on this end pm *ProtocolManager *peer } func newProtocolManagerForTesting(txAdded chan<- []*types.Transaction) *ProtocolManager { var ( em = new(event.TypeMux) db, _ = ethdb.NewMemDatabase() chain, _ = core.NewChainManager(core.GenesisBlock(0, db), db, db, db, core.FakePow{}, em) txpool = &fakeTxPool{added: txAdded} pm = NewProtocolManager(0, em, txpool, core.FakePow{}, chain) ) pm.Start() return pm } func newTestPeer(pm *ProtocolManager) (*testPeer, <-chan error) { var id discover.NodeID rand.Read(id[:]) rw1, rw2 := p2p.MsgPipe() peer := pm.newPeer(pm.protVer, pm.netId, p2p.NewPeer(id, "test peer", nil), rw2) errc := make(chan error, 1) go func() { pm.newPeerCh <- peer errc <- pm.handle(peer) }() return &testPeer{rw1, rw2, pm, peer}, errc } func (p *testPeer) handshake(t *testing.T) { td, currentBlock, genesis := p.pm.chainman.Status() msg := &statusData{ ProtocolVersion: uint32(p.pm.protVer), NetworkId: uint32(p.pm.netId), TD: td, CurrentBlock: currentBlock, GenesisBlock: genesis, } if err := p2p.ExpectMsg(p, StatusMsg, msg); err != nil { t.Fatalf("status recv: %v", err) } if err := p2p.Send(p, StatusMsg, msg); err != nil { t.Fatalf("status send: %v", err) } } func (p *testPeer) close() { p.pipe.Close() } type fakeTxPool struct { // all transactions are collected. mu sync.Mutex all []*types.Transaction // if added is non-nil, it receives added transactions. added chan<- []*types.Transaction } func (pool *fakeTxPool) AddTransactions(txs []*types.Transaction) { pool.mu.Lock() defer pool.mu.Unlock() pool.all = append(pool.all, txs...) if pool.added != nil { pool.added <- txs } } func (pool *fakeTxPool) GetTransactions() types.Transactions { pool.mu.Lock() defer pool.mu.Unlock() txs := make([]*types.Transaction, len(pool.all)) copy(txs, pool.all) return types.Transactions(txs) } func newtx(from *crypto.Key, nonce uint64, datasize int) *types.Transaction { data := make([]byte, datasize) tx := types.NewTransaction(nonce, common.Address{}, big.NewInt(0), big.NewInt(100000), big.NewInt(0), data) tx, _ = tx.SignECDSA(from.PrivateKey) return tx }