// 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
}
}
}
}
// 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
}
}
}
