// TestGetBlocksWire tests the MsgGetBlocks wire encode and decode for various // numbers of block locator hashes and protocol versions. func TestGetBlocksWire(t *testing.T) { // Set protocol inside getblocks message. pver := uint32(60002) // Block 99499 hash. hashStr := "2710f40c87ec93d010a6fd95f42c59a2cbacc60b18cf6b7957535" hashLocator, err := chainhash.NewHashFromStr(hashStr) if err != nil { t.Errorf("NewShaHashFromStr: %v", err) } // Block 99500 hash. hashStr = "2e7ad7b9eef9479e4aabc65cb831269cc20d2632c13684406dee0" hashLocator2, err := chainhash.NewHashFromStr(hashStr) if err != nil { t.Errorf("NewShaHashFromStr: %v", err) } // Block 100000 hash. hashStr = "3ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506" hashStop, err := chainhash.NewHashFromStr(hashStr) if err != nil { t.Errorf("NewShaHashFromStr: %v", err) } // MsgGetBlocks message with no block locators or stop hash. noLocators := wire.NewMsgGetBlocks(&chainhash.Hash{}) noLocators.ProtocolVersion = pver noLocatorsEncoded := []byte{ 0x62, 0xea, 0x00, 0x00, // Protocol version 60002 0x00, // Varint for number of block locator hashes 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Hash stop } // MsgGetBlocks message with multiple block locators and a stop hash. multiLocators := wire.NewMsgGetBlocks(hashStop) multiLocators.AddBlockLocatorHash(hashLocator2) multiLocators.AddBlockLocatorHash(hashLocator) multiLocators.ProtocolVersion = pver multiLocatorsEncoded := []byte{ 0x62, 0xea, 0x00, 0x00, // Protocol version 60002 0x02, // Varint for number of block locator hashes 0xe0, 0xde, 0x06, 0x44, 0x68, 0x13, 0x2c, 0x63, 0xd2, 0x20, 0xcc, 0x69, 0x12, 0x83, 0xcb, 0x65, 0xbc, 0xaa, 0xe4, 0x79, 0x94, 0xef, 0x9e, 0x7b, 0xad, 0xe7, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99500 hash 0x35, 0x75, 0x95, 0xb7, 0xf6, 0x8c, 0xb1, 0x60, 0xcc, 0xba, 0x2c, 0x9a, 0xc5, 0x42, 0x5f, 0xd9, 0x6f, 0x0a, 0x01, 0x3d, 0xc9, 0x7e, 0xc8, 0x40, 0x0f, 0x71, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99499 hash 0x06, 0xe5, 0x33, 0xfd, 0x1a, 0xda, 0x86, 0x39, 0x1f, 0x3f, 0x6c, 0x34, 0x32, 0x04, 0xb0, 0xd2, 0x78, 0xd4, 0xaa, 0xec, 0x1c, 0x0b, 0x20, 0xaa, 0x27, 0xba, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // Hash stop } tests := []struct { in *wire.MsgGetBlocks // Message to encode out *wire.MsgGetBlocks // Expected decoded message buf []byte // Wire encoding pver uint32 // Protocol version for wire encoding }{ // Latest protocol version with no block locators. { noLocators, noLocators, noLocatorsEncoded, wire.ProtocolVersion, }, // Latest protocol version with multiple block locators. { multiLocators, multiLocators, multiLocatorsEncoded, wire.ProtocolVersion, }, } t.Logf("Running %d tests", len(tests)) for i, test := range tests { // Encode the message to wire format. var buf bytes.Buffer err := test.in.BtcEncode(&buf, test.pver) if err != nil { t.Errorf("BtcEncode #%d error %v", i, err) continue } if !bytes.Equal(buf.Bytes(), test.buf) { t.Errorf("BtcEncode #%d\n got: %s want: %s", i, spew.Sdump(buf.Bytes()), spew.Sdump(test.buf)) continue } // Decode the message from wire format. var msg wire.MsgGetBlocks rbuf := bytes.NewReader(test.buf) err = msg.BtcDecode(rbuf, test.pver) if err != nil { t.Errorf("BtcDecode #%d error %v", i, err) continue } if !reflect.DeepEqual(&msg, test.out) { t.Errorf("BtcDecode #%d\n got: %s want: %s", i, spew.Sdump(&msg), spew.Sdump(test.out)) continue } } }
// TestGetBlocksWireErrors performs negative tests against wire encode and // decode of MsgGetBlocks to confirm error paths work correctly. func TestGetBlocksWireErrors(t *testing.T) { // Set protocol inside getheaders message. Use protocol version 60002 // specifically here instead of the latest because the test data is // using bytes encoded with that protocol version. pver := uint32(60002) wireErr := &wire.MessageError{} // Block 99499 hash. hashStr := "2710f40c87ec93d010a6fd95f42c59a2cbacc60b18cf6b7957535" hashLocator, err := chainhash.NewHashFromStr(hashStr) if err != nil { t.Errorf("NewShaHashFromStr: %v", err) } // Block 99500 hash. hashStr = "2e7ad7b9eef9479e4aabc65cb831269cc20d2632c13684406dee0" hashLocator2, err := chainhash.NewHashFromStr(hashStr) if err != nil { t.Errorf("NewShaHashFromStr: %v", err) } // Block 100000 hash. hashStr = "3ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506" hashStop, err := chainhash.NewHashFromStr(hashStr) if err != nil { t.Errorf("NewShaHashFromStr: %v", err) } // MsgGetBlocks message with multiple block locators and a stop hash. baseGetBlocks := wire.NewMsgGetBlocks(hashStop) baseGetBlocks.ProtocolVersion = pver baseGetBlocks.AddBlockLocatorHash(hashLocator2) baseGetBlocks.AddBlockLocatorHash(hashLocator) baseGetBlocksEncoded := []byte{ 0x62, 0xea, 0x00, 0x00, // Protocol version 60002 0x02, // Varint for number of block locator hashes 0xe0, 0xde, 0x06, 0x44, 0x68, 0x13, 0x2c, 0x63, 0xd2, 0x20, 0xcc, 0x69, 0x12, 0x83, 0xcb, 0x65, 0xbc, 0xaa, 0xe4, 0x79, 0x94, 0xef, 0x9e, 0x7b, 0xad, 0xe7, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99500 hash 0x35, 0x75, 0x95, 0xb7, 0xf6, 0x8c, 0xb1, 0x60, 0xcc, 0xba, 0x2c, 0x9a, 0xc5, 0x42, 0x5f, 0xd9, 0x6f, 0x0a, 0x01, 0x3d, 0xc9, 0x7e, 0xc8, 0x40, 0x0f, 0x71, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99499 hash 0x06, 0xe5, 0x33, 0xfd, 0x1a, 0xda, 0x86, 0x39, 0x1f, 0x3f, 0x6c, 0x34, 0x32, 0x04, 0xb0, 0xd2, 0x78, 0xd4, 0xaa, 0xec, 0x1c, 0x0b, 0x20, 0xaa, 0x27, 0xba, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // Hash stop } // Message that forces an error by having more than the max allowed // block locator hashes. maxGetBlocks := wire.NewMsgGetBlocks(hashStop) for i := 0; i < wire.MaxBlockLocatorsPerMsg; i++ { maxGetBlocks.AddBlockLocatorHash(&mainNetGenesisHash) } maxGetBlocks.BlockLocatorHashes = append(maxGetBlocks.BlockLocatorHashes, &mainNetGenesisHash) maxGetBlocksEncoded := []byte{ 0x62, 0xea, 0x00, 0x00, // Protocol version 60002 0xfd, 0xf5, 0x01, // Varint for number of block loc hashes (501) } tests := []struct { in *wire.MsgGetBlocks // Value to encode buf []byte // Wire encoding pver uint32 // Protocol version for wire encoding max int // Max size of fixed buffer to induce errors writeErr error // Expected write error readErr error // Expected read error }{ // Force error in protocol version. {baseGetBlocks, baseGetBlocksEncoded, pver, 0, io.ErrShortWrite, io.EOF}, // Force error in block locator hash count. {baseGetBlocks, baseGetBlocksEncoded, pver, 4, io.ErrShortWrite, io.EOF}, // Force error in block locator hashes. {baseGetBlocks, baseGetBlocksEncoded, pver, 5, io.ErrShortWrite, io.EOF}, // Force error in stop hash. {baseGetBlocks, baseGetBlocksEncoded, pver, 69, io.ErrShortWrite, io.EOF}, // Force error with greater than max block locator hashes. {maxGetBlocks, maxGetBlocksEncoded, pver, 7, wireErr, wireErr}, } t.Logf("Running %d tests", len(tests)) for i, test := range tests { // Encode to wire format. w := newFixedWriter(test.max) err := test.in.BtcEncode(w, test.pver) if reflect.TypeOf(err) != reflect.TypeOf(test.writeErr) { t.Errorf("BtcEncode #%d wrong error got: %v, want: %v", i, err, test.writeErr) continue } // For errors which are not of type wire.MessageError, check // them for equality. if _, ok := err.(*wire.MessageError); !ok { if err != test.writeErr { t.Errorf("BtcEncode #%d wrong error got: %v, "+ "want: %v", i, err, test.writeErr) continue } } // Decode from wire format. var msg wire.MsgGetBlocks r := newFixedReader(test.max, test.buf) err = msg.BtcDecode(r, test.pver) if reflect.TypeOf(err) != reflect.TypeOf(test.readErr) { t.Errorf("BtcDecode #%d wrong error got: %v, want: %v", i, err, test.readErr) continue } // For errors which are not of type wire.MessageError, check // them for equality. if _, ok := err.(*wire.MessageError); !ok { if err != test.readErr { t.Errorf("BtcDecode #%d wrong error got: %v, "+ "want: %v", i, err, test.readErr) continue } } } }