예제 #1
0
// TestWriteMessageWireErrors performs negative tests against wire encoding from
// concrete messages to confirm error paths work correctly.
func TestWriteMessageWireErrors(t *testing.T) {
	pver := btcwire.ProtocolVersion
	btcnet := btcwire.MainNet
	btcwireErr := &btcwire.MessageError{}

	// Fake message with a command that is too long.
	badCommandMsg := &fakeMessage{command: "somethingtoolong"}

	// Fake message with a problem during encoding
	encodeErrMsg := &fakeMessage{forceEncodeErr: true}

	// Fake message that has payload which exceeds max overall message size.
	exceedOverallPayload := make([]byte, btcwire.MaxMessagePayload+1)
	exceedOverallPayloadErrMsg := &fakeMessage{payload: exceedOverallPayload}

	// Fake message that has payload which exceeds max allowed per message.
	exceedPayload := make([]byte, 1)
	exceedPayloadErrMsg := &fakeMessage{payload: exceedPayload, forceLenErr: true}

	// Fake message that is used to force errors in the header and payload
	// writes.
	bogusPayload := []byte{0x01, 0x02, 0x03, 0x04}
	bogusMsg := &fakeMessage{command: "bogus", payload: bogusPayload}

	tests := []struct {
		msg    btcwire.Message    // Message to encode
		pver   uint32             // Protocol version for wire encoding
		btcnet btcwire.BitcoinNet // Bitcoin network for wire encoding
		max    int                // Max size of fixed buffer to induce errors
		err    error              // Expected error
		bytes  int                // Expected num bytes written
	}{
		// Command too long.
		{badCommandMsg, pver, btcnet, 0, btcwireErr, 0},
		// Force error in payload encode.
		{encodeErrMsg, pver, btcnet, 0, btcwireErr, 0},
		// Force error due to exceeding max overall message payload size.
		{exceedOverallPayloadErrMsg, pver, btcnet, 0, btcwireErr, 0},
		// Force error due to exceeding max payload for message type.
		{exceedPayloadErrMsg, pver, btcnet, 0, btcwireErr, 0},
		// Force error in header write.
		{bogusMsg, pver, btcnet, 0, io.ErrShortWrite, 0},
		// Force error in payload write.
		{bogusMsg, pver, btcnet, 24, io.ErrShortWrite, 24},
	}

	t.Logf("Running %d tests", len(tests))
	for i, test := range tests {
		// Encode wire format.
		w := newFixedWriter(test.max)
		nw, err := btcwire.WriteMessageN(w, test.msg, test.pver, test.btcnet)
		if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
			t.Errorf("WriteMessage #%d wrong error got: %v <%T>, "+
				"want: %T", i, err, err, test.err)
			continue
		}

		// Ensure the number of bytes written match the expected value.
		if nw != test.bytes {
			t.Errorf("WriteMessage #%d unexpected num bytes "+
				"written - got %d, want %d", i, nw, test.bytes)
		}

		// For errors which are not of type btcwire.MessageError, check
		// them for equality.
		if _, ok := err.(*btcwire.MessageError); !ok {
			if err != test.err {
				t.Errorf("ReadMessage #%d wrong error got: %v <%T>, "+
					"want: %v <%T>", i, err, err,
					test.err, test.err)
				continue
			}
		}
	}
}
예제 #2
0
// TestMessage tests the Read/WriteMessage and Read/WriteMessageN API.
func TestMessage(t *testing.T) {
	pver := btcwire.ProtocolVersion

	// Create the various types of messages to test.

	// MsgVersion.
	addrYou := &net.TCPAddr{IP: net.ParseIP("192.168.0.1"), Port: 8333}
	you, err := btcwire.NewNetAddress(addrYou, btcwire.SFNodeNetwork)
	if err != nil {
		t.Errorf("NewNetAddress: %v", err)
	}
	you.Timestamp = time.Time{} // Version message has zero value timestamp.
	addrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8333}
	me, err := btcwire.NewNetAddress(addrMe, btcwire.SFNodeNetwork)
	if err != nil {
		t.Errorf("NewNetAddress: %v", err)
	}
	me.Timestamp = time.Time{} // Version message has zero value timestamp.
	msgVersion := btcwire.NewMsgVersion(me, you, 123123, "/test:0.0.1/", 0)

	msgVerack := btcwire.NewMsgVerAck()
	msgGetAddr := btcwire.NewMsgGetAddr()
	msgAddr := btcwire.NewMsgAddr()
	msgGetBlocks := btcwire.NewMsgGetBlocks(&btcwire.ShaHash{})
	msgBlock := &blockOne
	msgInv := btcwire.NewMsgInv()
	msgGetData := btcwire.NewMsgGetData()
	msgNotFound := btcwire.NewMsgNotFound()
	msgTx := btcwire.NewMsgTx()
	msgPing := btcwire.NewMsgPing(123123)
	msgPong := btcwire.NewMsgPong(123123)
	msgGetHeaders := btcwire.NewMsgGetHeaders()
	msgHeaders := btcwire.NewMsgHeaders()
	msgAlert := btcwire.NewMsgAlert("payload", "signature")
	msgMemPool := btcwire.NewMsgMemPool()

	tests := []struct {
		in     btcwire.Message    // Value to encode
		out    btcwire.Message    // Expected decoded value
		pver   uint32             // Protocol version for wire encoding
		btcnet btcwire.BitcoinNet // Network to use for wire encoding
		bytes  int                // Expected num bytes read/written
	}{
		{msgVersion, msgVersion, pver, btcwire.MainNet, 121},
		{msgVerack, msgVerack, pver, btcwire.MainNet, 24},
		{msgGetAddr, msgGetAddr, pver, btcwire.MainNet, 24},
		{msgAddr, msgAddr, pver, btcwire.MainNet, 25},
		{msgGetBlocks, msgGetBlocks, pver, btcwire.MainNet, 61},
		{msgBlock, msgBlock, pver, btcwire.MainNet, 239},
		{msgInv, msgInv, pver, btcwire.MainNet, 25},
		{msgGetData, msgGetData, pver, btcwire.MainNet, 25},
		{msgNotFound, msgNotFound, pver, btcwire.MainNet, 25},
		{msgTx, msgTx, pver, btcwire.MainNet, 34},
		{msgPing, msgPing, pver, btcwire.MainNet, 32},
		{msgPong, msgPong, pver, btcwire.MainNet, 32},
		{msgGetHeaders, msgGetHeaders, pver, btcwire.MainNet, 61},
		{msgHeaders, msgHeaders, pver, btcwire.MainNet, 25},
		{msgAlert, msgAlert, pver, btcwire.MainNet, 42},
		{msgMemPool, msgMemPool, pver, btcwire.MainNet, 24},
	}

	t.Logf("Running %d tests", len(tests))
	for i, test := range tests {
		// Encode to wire format.
		var buf bytes.Buffer
		nw, err := btcwire.WriteMessageN(&buf, test.in, test.pver, test.btcnet)
		if err != nil {
			t.Errorf("WriteMessage #%d error %v", i, err)
			continue
		}

		// Ensure the number of bytes written match the expected value.
		if nw != test.bytes {
			t.Errorf("WriteMessage #%d unexpected num bytes "+
				"written - got %d, want %d", i, nw, test.bytes)
		}

		// Decode from wire format.
		rbuf := bytes.NewBuffer(buf.Bytes())
		nr, msg, _, err := btcwire.ReadMessageN(rbuf, test.pver, test.btcnet)
		if err != nil {
			t.Errorf("ReadMessage #%d error %v, msg %v", i, err,
				spew.Sdump(msg))
			continue
		}
		if !reflect.DeepEqual(msg, test.out) {
			t.Errorf("ReadMessage #%d\n got: %v want: %v", i,
				spew.Sdump(msg), spew.Sdump(test.out))
			continue
		}

		// Ensure the number of bytes read match the expected value.
		if nr != test.bytes {
			t.Errorf("ReadMessage #%d unexpected num bytes read - "+
				"got %d, want %d", i, nr, test.bytes)
		}
	}

	// Do the same thing for Read/WriteMessage, but ignore the bytes since
	// they don't return them.
	t.Logf("Running %d tests", len(tests))
	for i, test := range tests {
		// Encode to wire format.
		var buf bytes.Buffer
		err := btcwire.WriteMessage(&buf, test.in, test.pver, test.btcnet)
		if err != nil {
			t.Errorf("WriteMessage #%d error %v", i, err)
			continue
		}

		// Decode from wire format.
		rbuf := bytes.NewBuffer(buf.Bytes())
		msg, _, err := btcwire.ReadMessage(rbuf, test.pver, test.btcnet)
		if err != nil {
			t.Errorf("ReadMessage #%d error %v, msg %v", i, err,
				spew.Sdump(msg))
			continue
		}
		if !reflect.DeepEqual(msg, test.out) {
			t.Errorf("ReadMessage #%d\n got: %v want: %v", i,
				spew.Sdump(msg), spew.Sdump(test.out))
			continue
		}
	}
}