Golang MsgGetHeaders.BtcDecode方法代碼示例

//.........這裏部分代碼省略.........
			MultiLocators,
			MultiLocatorsEncoded,
			btcwire.ProtocolVersion,
		},

		// Protocol version BIP0035Version with no block locators.
		{
			NoLocators,
			NoLocators,
			NoLocatorsEncoded,
			btcwire.BIP0035Version,
		},

		// Protocol version BIP0035Version with multiple block locators.
		{
			MultiLocators,
			MultiLocators,
			MultiLocatorsEncoded,
			btcwire.BIP0035Version,
		},

		// Protocol version BIP0031Version with no block locators.
		{
			NoLocators,
			NoLocators,
			NoLocatorsEncoded,
			btcwire.BIP0031Version,
		},

		// Protocol version BIP0031Versionwith multiple block locators.
		{
			MultiLocators,
			MultiLocators,
			MultiLocatorsEncoded,
			btcwire.BIP0031Version,
		},

		// Protocol version NetAddressTimeVersion with no block locators.
		{
			NoLocators,
			NoLocators,
			NoLocatorsEncoded,
			btcwire.NetAddressTimeVersion,
		},

		// Protocol version NetAddressTimeVersion multiple block locators.
		{
			MultiLocators,
			MultiLocators,
			MultiLocatorsEncoded,
			btcwire.NetAddressTimeVersion,
		},

		// Protocol version MultipleAddressVersion with no block locators.
		{
			NoLocators,
			NoLocators,
			NoLocatorsEncoded,
			btcwire.MultipleAddressVersion,
		},

		// Protocol version MultipleAddressVersion multiple block locators.
		{
			MultiLocators,
			MultiLocators,
			MultiLocatorsEncoded,
			btcwire.MultipleAddressVersion,
		},
	}

	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 btcwire.MsgGetHeaders
		rbuf := bytes.NewBuffer(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
		}
	}
}

//.........這裏部分代碼省略.........

	// MsgGetHeaders message with multiple block locators and a stop hash.
	baseGetHeaders := btcwire.NewMsgGetHeaders()
	baseGetHeaders.ProtocolVersion = pver
	baseGetHeaders.HashStop = *hashStop
	baseGetHeaders.AddBlockLocatorHash(hashLocator2)
	baseGetHeaders.AddBlockLocatorHash(hashLocator)
	baseGetHeadersEncoded := []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.
	maxGetHeaders := btcwire.NewMsgGetHeaders()
	for i := 0; i < btcwire.MaxBlockLocatorsPerMsg; i++ {
		maxGetHeaders.AddBlockLocatorHash(&btcwire.GenesisHash)
	}
	maxGetHeaders.BlockLocatorHashes = append(maxGetHeaders.BlockLocatorHashes,
		&btcwire.GenesisHash)
	//maxGetHeaders.InvList = append(maxGetData.InvList, iv)
	maxGetHeadersEncoded := []byte{
		0x62, 0xea, 0x00, 0x00, // Protocol version 60002
		0xfd, 0xf5, 0x01, // Varint for number of block loc hashes (501)
	}

	tests := []struct {
		in       *btcwire.MsgGetHeaders // 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.
		{baseGetHeaders, baseGetHeadersEncoded, pver, 0, io.ErrShortWrite, io.EOF},
		// Force error in block locator hash count.
		{baseGetHeaders, baseGetHeadersEncoded, pver, 4, io.ErrShortWrite, io.EOF},
		// Force error in block locator hashes.
		{baseGetHeaders, baseGetHeadersEncoded, pver, 5, io.ErrShortWrite, io.EOF},
		// Force error in stop hash.
		{baseGetHeaders, baseGetHeadersEncoded, pver, 69, io.ErrShortWrite, io.EOF},
		// Force error with greater than max block locator hashes.
		{maxGetHeaders, maxGetHeadersEncoded, pver, 7, btcwireErr, btcwireErr},
	}

	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 btcwire.MessageError, check
		// them for equality.
		if _, ok := err.(*btcwire.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 btcwire.MsgGetHeaders
		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 btcwire.MessageError, check
		// them for equality.
		if _, ok := err.(*btcwire.MessageError); !ok {
			if err != test.readErr {
				t.Errorf("BtcDecode #%d wrong error got: %v, "+
					"want: %v", i, err, test.readErr)
				continue
			}
		}
	}
}