mirror of
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ca0619bbcf
* [NOD-176] Moved daghash from dagconfig to util * [NOD-176] Fixed order of includes with gofmt
405 lines
14 KiB
Go
405 lines
14 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package wire
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import (
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"bytes"
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"io"
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"net"
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"reflect"
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"strings"
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"testing"
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"time"
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"github.com/daglabs/btcd/util/daghash"
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"github.com/daglabs/btcd/util/random"
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"github.com/davecgh/go-spew/spew"
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)
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// TestVersion tests the MsgVersion API.
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func TestVersion(t *testing.T) {
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pver := ProtocolVersion
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// Create version message data.
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selectedTip := &daghash.Hash{12, 34}
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tcpAddrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8333}
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me := NewNetAddress(tcpAddrMe, SFNodeNetwork)
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tcpAddrYou := &net.TCPAddr{IP: net.ParseIP("192.168.0.1"), Port: 8333}
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you := NewNetAddress(tcpAddrYou, SFNodeNetwork)
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nonce, err := random.Uint64()
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if err != nil {
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t.Errorf("random.Uint64: error generating nonce: %v", err)
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}
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// Ensure we get the correct data back out.
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msg := NewMsgVersion(me, you, nonce, selectedTip, nil)
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if msg.ProtocolVersion != int32(pver) {
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t.Errorf("NewMsgVersion: wrong protocol version - got %v, want %v",
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msg.ProtocolVersion, pver)
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}
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if !reflect.DeepEqual(&msg.AddrMe, me) {
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t.Errorf("NewMsgVersion: wrong me address - got %v, want %v",
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spew.Sdump(&msg.AddrMe), spew.Sdump(me))
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}
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if !reflect.DeepEqual(&msg.AddrYou, you) {
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t.Errorf("NewMsgVersion: wrong you address - got %v, want %v",
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spew.Sdump(&msg.AddrYou), spew.Sdump(you))
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}
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if msg.Nonce != nonce {
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t.Errorf("NewMsgVersion: wrong nonce - got %v, want %v",
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msg.Nonce, nonce)
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}
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if msg.UserAgent != DefaultUserAgent {
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t.Errorf("NewMsgVersion: wrong user agent - got %v, want %v",
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msg.UserAgent, DefaultUserAgent)
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}
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if !msg.SelectedTip.IsEqual(selectedTip) {
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t.Errorf("NewMsgVersion: wrong selected tip - got %s, want %s",
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msg.SelectedTip, selectedTip)
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}
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if msg.DisableRelayTx {
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t.Errorf("NewMsgVersion: disable relay tx is not false by "+
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"default - got %v, want %v", msg.DisableRelayTx, false)
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}
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msg.AddUserAgent("myclient", "1.2.3", "optional", "comments")
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customUserAgent := DefaultUserAgent + "myclient:1.2.3(optional; comments)/"
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if msg.UserAgent != customUserAgent {
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t.Errorf("AddUserAgent: wrong user agent - got %s, want %s",
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msg.UserAgent, customUserAgent)
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}
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msg.AddUserAgent("mygui", "3.4.5")
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customUserAgent += "mygui:3.4.5/"
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if msg.UserAgent != customUserAgent {
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t.Errorf("AddUserAgent: wrong user agent - got %s, want %s",
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msg.UserAgent, customUserAgent)
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}
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// accounting for ":", "/"
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err = msg.AddUserAgent(strings.Repeat("t",
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MaxUserAgentLen-len(customUserAgent)-2+1), "")
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if _, ok := err.(*MessageError); !ok {
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t.Errorf("AddUserAgent: expected error not received "+
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"- got %v, want %T", err, MessageError{})
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}
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// Version message should not have any services set by default.
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if msg.Services != 0 {
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t.Errorf("NewMsgVersion: wrong default services - got %v, want %v",
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msg.Services, 0)
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}
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if msg.HasService(SFNodeNetwork) {
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t.Errorf("HasService: SFNodeNetwork service is set")
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}
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// Ensure the command is expected value.
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wantCmd := "version"
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if cmd := msg.Command(); cmd != wantCmd {
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t.Errorf("NewMsgVersion: wrong command - got %v want %v",
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cmd, wantCmd)
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}
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// Ensure max payload is expected value.
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// Protocol version 4 bytes + services 8 bytes + timestamp 16 bytes +
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// remote and local net addresses + nonce 8 bytes + length of user agent
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// (varInt) + max allowed user agent length + last block 4 bytes +
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// relay transactions flag 1 byte.
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wantPayload := uint32(366)
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maxPayload := msg.MaxPayloadLength(pver)
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if maxPayload != wantPayload {
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t.Errorf("MaxPayloadLength: wrong max payload length for "+
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"protocol version %d - got %v, want %v", pver,
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maxPayload, wantPayload)
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}
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// Ensure adding the full service node flag works.
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msg.AddService(SFNodeNetwork)
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if msg.Services != SFNodeNetwork {
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t.Errorf("AddService: wrong services - got %v, want %v",
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msg.Services, SFNodeNetwork)
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}
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if !msg.HasService(SFNodeNetwork) {
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t.Errorf("HasService: SFNodeNetwork service not set")
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}
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}
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// TestVersionWire tests the MsgVersion wire encode and decode for various
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// protocol versions.
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func TestVersionWire(t *testing.T) {
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// verRelayTxFalse and verRelayTxFalseEncoded is a version message with the transaction relay disabled.
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baseVersionWithRelayTxCopy := *baseVersionWithRelayTx
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verRelayTxFalse := &baseVersionWithRelayTxCopy
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verRelayTxFalse.DisableRelayTx = true
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verRelayTxFalseEncoded := make([]byte, len(baseVersionWithRelayTxEncoded))
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copy(verRelayTxFalseEncoded, baseVersionWithRelayTxEncoded)
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verRelayTxFalseEncoded[len(verRelayTxFalseEncoded)-1] = 0
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tests := []struct {
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in *MsgVersion // Message to encode
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out *MsgVersion // Expected decoded message
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buf []byte // Wire encoding
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pver uint32 // Protocol version for wire encoding
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}{
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// Latest protocol version.
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{
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baseVersionWithRelayTx,
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baseVersionWithRelayTx,
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baseVersionWithRelayTxEncoded,
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ProtocolVersion,
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},
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{
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verRelayTxFalse,
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verRelayTxFalse,
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verRelayTxFalseEncoded,
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ProtocolVersion,
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},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Encode the message to wire format.
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var buf bytes.Buffer
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err := test.in.BtcEncode(&buf, test.pver)
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if err != nil {
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t.Errorf("BtcEncode #%d error %v", i, err)
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continue
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}
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if !bytes.Equal(buf.Bytes(), test.buf) {
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t.Errorf("BtcEncode #%d\n got: %s want: %s", i,
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spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
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continue
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}
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// Decode the message from wire format.
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var msg MsgVersion
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rbuf := bytes.NewBuffer(test.buf)
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err = msg.BtcDecode(rbuf, test.pver)
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if err != nil {
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t.Errorf("BtcDecode #%d error %v", i, err)
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continue
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}
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if !reflect.DeepEqual(&msg, test.out) {
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t.Errorf("BtcDecode #%d\n got: %s want: %s", i,
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spew.Sdump(msg), spew.Sdump(test.out))
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continue
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}
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}
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}
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// TestVersionWireErrors performs negative tests against wire encode and
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// decode of MsgGetHeaders to confirm error paths work correctly.
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func TestVersionWireErrors(t *testing.T) {
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pver := ProtocolVersion
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wireErr := &MessageError{}
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// Ensure calling MsgVersion.BtcDecode with a non *bytes.Buffer returns
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// error.
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fr := newFixedReader(0, []byte{})
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if err := baseVersion.BtcDecode(fr, pver); err == nil {
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t.Errorf("Did not received error when calling " +
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"MsgVersion.BtcDecode with non *bytes.Buffer")
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}
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// Copy the base version and change the user agent to exceed max limits.
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bvc := *baseVersion
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exceedUAVer := &bvc
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newUA := "/" + strings.Repeat("t", MaxUserAgentLen-8+1) + ":0.0.1/"
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exceedUAVer.UserAgent = newUA
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// Encode the new UA length as a varint.
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var newUAVarIntBuf bytes.Buffer
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err := WriteVarInt(&newUAVarIntBuf, uint64(len(newUA)))
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if err != nil {
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t.Errorf("WriteVarInt: error %v", err)
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}
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// Make a new buffer big enough to hold the base version plus the new
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// bytes for the bigger varint to hold the new size of the user agent
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// and the new user agent string. Then stitch it all together.
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newLen := len(baseVersionEncoded) - len(baseVersion.UserAgent)
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newLen = newLen + len(newUAVarIntBuf.Bytes()) - 1 + len(newUA)
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exceedUAVerEncoded := make([]byte, newLen)
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copy(exceedUAVerEncoded, baseVersionEncoded[0:81])
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copy(exceedUAVerEncoded[81:], newUAVarIntBuf.Bytes())
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copy(exceedUAVerEncoded[84:], []byte(newUA))
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copy(exceedUAVerEncoded[84+len(newUA):], baseVersionEncoded[98:101])
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tests := []struct {
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in *MsgVersion // Value to encode
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buf []byte // Wire encoding
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pver uint32 // Protocol version for wire encoding
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max int // Max size of fixed buffer to induce errors
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writeErr error // Expected write error
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readErr error // Expected read error
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}{
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// Force error in protocol version.
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{baseVersion, baseVersionEncoded, pver, 0, io.ErrShortWrite, io.EOF},
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// Force error in services.
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{baseVersion, baseVersionEncoded, pver, 4, io.ErrShortWrite, io.EOF},
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// Force error in timestamp.
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{baseVersion, baseVersionEncoded, pver, 12, io.ErrShortWrite, io.EOF},
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// Force error in subnetworkID.
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{baseVersion, baseVersionEncoded, pver, 20, io.ErrShortWrite, io.EOF},
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// Force error in remote address.
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{baseVersion, baseVersionEncoded, pver, 21, io.ErrShortWrite, io.EOF},
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// Force error in local address.
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{baseVersion, baseVersionEncoded, pver, 48, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in nonce.
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{baseVersion, baseVersionEncoded, pver, 74, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in user agent length.
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{baseVersion, baseVersionEncoded, pver, 82, io.ErrShortWrite, io.EOF},
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// Force error in user agent.
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{baseVersion, baseVersionEncoded, pver, 83, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in last block.
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{baseVersion, baseVersionEncoded, pver, 99, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error due to user agent too big
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{exceedUAVer, exceedUAVerEncoded, pver, newLen, wireErr, wireErr},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Encode to wire format.
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w := newFixedWriter(test.max)
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err := test.in.BtcEncode(w, test.pver)
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if reflect.TypeOf(err) != reflect.TypeOf(test.writeErr) {
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t.Errorf("BtcEncode #%d wrong error got: %v, want: %v",
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i, err, test.writeErr)
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continue
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}
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// For errors which are not of type MessageError, check them for
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// equality.
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if _, ok := err.(*MessageError); !ok {
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if err != test.writeErr {
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t.Errorf("BtcEncode #%d wrong error got: %v, "+
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"want: %v", i, err, test.writeErr)
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continue
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}
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}
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// Decode from wire format.
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var msg MsgVersion
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buf := bytes.NewBuffer(test.buf[0:test.max])
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err = msg.BtcDecode(buf, test.pver)
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if reflect.TypeOf(err) != reflect.TypeOf(test.readErr) {
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t.Errorf("BtcDecode #%d wrong error got: %v, want: %v",
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i, err, test.readErr)
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continue
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}
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// For errors which are not of type MessageError, check them for
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// equality.
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if _, ok := err.(*MessageError); !ok {
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if err != test.readErr {
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t.Errorf("BtcDecode #%d wrong error got: %v, "+
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"want: %v", i, err, test.readErr)
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continue
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}
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}
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}
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}
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// baseVersion is used in the various tests as a baseline MsgVersion.
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var baseVersion = &MsgVersion{
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ProtocolVersion: 60002,
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Services: SFNodeNetwork,
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Timestamp: time.Unix(0x495fab29, 0), // 2009-01-03 12:15:05 -0600 CST)
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AddrYou: NetAddress{
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Timestamp: time.Time{}, // Zero value -- no timestamp in version
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Services: SFNodeNetwork,
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IP: net.ParseIP("192.168.0.1"),
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Port: 8333,
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},
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AddrMe: NetAddress{
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Timestamp: time.Time{}, // Zero value -- no timestamp in version
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Services: SFNodeNetwork,
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IP: net.ParseIP("127.0.0.1"),
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Port: 8333,
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},
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Nonce: 123123, // 0x1e0f3
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UserAgent: "/btcdtest:0.0.1/",
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SelectedTip: &daghash.Hash{0x12, 0x34},
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}
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// baseVersionEncoded is the wire encoded bytes for baseVersion using protocol
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// version 60002 and is used in the various tests.
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var baseVersionEncoded = []byte{
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0x62, 0xea, 0x00, 0x00, // Protocol version 60002
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x29, 0xab, 0x5f, 0x49, 0x00, 0x00, 0x00, 0x00, // 64-bit Timestamp
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0x01, // is full node
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// AddrYou -- No timestamp for NetAddress in version message
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0xff, 0xff, 0xc0, 0xa8, 0x00, 0x01, // IP 192.168.0.1
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0x20, 0x8d, // Port 8333 in big-endian
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// AddrMe -- No timestamp for NetAddress in version message
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01, // IP 127.0.0.1
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0x20, 0x8d, // Port 8333 in big-endian
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0xf3, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, // Fake Nonce. TODO: (Ori) Replace to a real nonce
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0x10, // Varint for user agent length
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0x2f, 0x62, 0x74, 0x63, 0x64, 0x74, 0x65, 0x73,
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0x74, 0x3a, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x2f, // User agent
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0x12, 0x34, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Selected Tip
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}
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// baseVersionWithRelayTx is used in the various tests as a baseline MsgVersion
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var baseVersionWithRelayTx = &MsgVersion{
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ProtocolVersion: 70001,
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Services: SFNodeNetwork,
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Timestamp: time.Unix(0x495fab29, 0), // 2009-01-03 12:15:05 -0600 CST)
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AddrYou: NetAddress{
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Timestamp: time.Time{}, // Zero value -- no timestamp in version
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Services: SFNodeNetwork,
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IP: net.ParseIP("192.168.0.1"),
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Port: 8333,
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},
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AddrMe: NetAddress{
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Timestamp: time.Time{}, // Zero value -- no timestamp in version
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Services: SFNodeNetwork,
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IP: net.ParseIP("127.0.0.1"),
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Port: 8333,
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},
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Nonce: 123123, // 0x1e0f3
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UserAgent: "/btcdtest:0.0.1/",
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SelectedTip: &daghash.Hash{0x12, 0x34},
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}
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// baseVersionWithRelayTxEncoded is the wire encoded bytes for
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// baseVersionWithRelayTx and is used in the various tests.
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var baseVersionWithRelayTxEncoded = []byte{
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0x71, 0x11, 0x01, 0x00, // Protocol version 70001
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x29, 0xab, 0x5f, 0x49, 0x00, 0x00, 0x00, 0x00, // 64-bit Timestamp
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0x01, // is full node
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// AddrYou -- No timestamp for NetAddress in version message
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0xff, 0xff, 0xc0, 0xa8, 0x00, 0x01, // IP 192.168.0.1
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0x20, 0x8d, // Port 8333 in big-endian
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// AddrMe -- No timestamp for NetAddress in version message
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01, // IP 127.0.0.1
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0x20, 0x8d, // Port 8333 in big-endian
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0xf3, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, // Nonce
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0x10, // Varint for user agent length
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0x2f, 0x62, 0x74, 0x63, 0x64, 0x74, 0x65, 0x73,
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0x74, 0x3a, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x2f, // User agent
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0x12, 0x34, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Selected Tip
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0x01, // Relay tx
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}
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