565 lines
18 KiB
Go
565 lines
18 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/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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lastBlock := int32(234234)
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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 := RandomUint64()
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if err != nil {
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t.Errorf("RandomUint64: 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, lastBlock)
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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.LastBlock != lastBlock {
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t.Errorf("NewMsgVersion: wrong last block - got %v, want %v",
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msg.LastBlock, lastBlock)
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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 8 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(358)
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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 as of
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// BIP0037Version with the transaction relay disabled.
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baseVersionBIP0037Copy := *baseVersionBIP0037
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verRelayTxFalse := &baseVersionBIP0037Copy
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verRelayTxFalse.DisableRelayTx = true
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verRelayTxFalseEncoded := make([]byte, len(baseVersionBIP0037Encoded))
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copy(verRelayTxFalseEncoded, baseVersionBIP0037Encoded)
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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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enc MessageEncoding // Message encoding format
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}{
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// Latest protocol version.
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{
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baseVersionBIP0037,
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baseVersionBIP0037,
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baseVersionBIP0037Encoded,
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ProtocolVersion,
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BaseEncoding,
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},
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// Protocol version BIP0037Version with relay transactions field
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// true.
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{
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baseVersionBIP0037,
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baseVersionBIP0037,
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baseVersionBIP0037Encoded,
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BIP0037Version,
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BaseEncoding,
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},
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// Protocol version BIP0037Version with relay transactions field
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// false.
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{
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verRelayTxFalse,
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verRelayTxFalse,
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verRelayTxFalseEncoded,
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BIP0037Version,
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BaseEncoding,
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},
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// Protocol version BIP0035Version.
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{
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baseVersion,
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baseVersion,
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baseVersionEncoded,
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BIP0035Version,
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BaseEncoding,
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},
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// Protocol version BIP0031Version.
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{
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baseVersion,
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baseVersion,
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baseVersionEncoded,
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BIP0031Version,
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BaseEncoding,
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},
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// Protocol version NetAddressTimeVersion.
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{
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baseVersion,
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baseVersion,
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baseVersionEncoded,
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NetAddressTimeVersion,
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BaseEncoding,
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},
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// Protocol version MultipleAddressVersion.
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{
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baseVersion,
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baseVersion,
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baseVersionEncoded,
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MultipleAddressVersion,
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BaseEncoding,
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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, test.enc)
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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, test.enc)
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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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// Use protocol version 60002 specifically here instead of the latest
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// because the test data is using bytes encoded with that protocol
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// version.
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pver := uint32(60002)
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enc := BaseEncoding
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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, enc); 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, pver, 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 stich 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[0:80])
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copy(exceedUAVerEncoded[80:], newUAVarIntBuf.Bytes())
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copy(exceedUAVerEncoded[83:], []byte(newUA))
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copy(exceedUAVerEncoded[83+len(newUA):], baseVersionEncoded[97:100])
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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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enc MessageEncoding // Message encoding format
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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, BaseEncoding, 0, io.ErrShortWrite, io.EOF},
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// Force error in services.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 4, io.ErrShortWrite, io.EOF},
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// Force error in timestamp.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 12, io.ErrShortWrite, io.EOF},
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// Force error in remote address.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 20, io.ErrShortWrite, io.EOF},
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// Force error in local address.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 47, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in nonce.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 73, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in user agent length.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 81, io.ErrShortWrite, io.EOF},
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// Force error in user agent.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 82, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in last block.
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{baseVersion, baseVersionEncoded, pver, BaseEncoding, 98, io.ErrShortWrite, io.ErrUnexpectedEOF},
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// Force error in relay tx - no read error should happen since
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// it's optional.
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{
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baseVersionBIP0037, baseVersionBIP0037Encoded,
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BIP0037Version, BaseEncoding, 101, io.ErrShortWrite, nil,
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},
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// Force error due to user agent too big
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{exceedUAVer, exceedUAVerEncoded, pver, BaseEncoding, 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, test.enc)
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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, test.enc)
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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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// TestVersionOptionalFields performs tests to ensure that an encoded version
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// messages that omit optional fields are handled correctly.
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func TestVersionOptionalFields(t *testing.T) {
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// onlyRequiredVersion is a version message that only contains the
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// required versions and all other values set to their default values.
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onlyRequiredVersion := 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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}
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onlyRequiredVersionEncoded := make([]byte, len(baseVersionEncoded)-55)
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copy(onlyRequiredVersionEncoded, baseVersionEncoded)
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// addrMeVersion is a version message that contains all fields through
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// the AddrMe field.
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addrMeVersion := onlyRequiredVersion
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addrMeVersion.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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addrMeVersionEncoded := make([]byte, len(baseVersionEncoded)-29)
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copy(addrMeVersionEncoded, baseVersionEncoded)
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// nonceVersion is a version message that contains all fields through
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// the Nonce field.
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nonceVersion := addrMeVersion
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nonceVersion.Nonce = 123123 // 0x1e0f3
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nonceVersionEncoded := make([]byte, len(baseVersionEncoded)-21)
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copy(nonceVersionEncoded, baseVersionEncoded)
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// uaVersion is a version message that contains all fields through
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// the UserAgent field.
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uaVersion := nonceVersion
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uaVersion.UserAgent = "/btcdtest:0.0.1/"
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uaVersionEncoded := make([]byte, len(baseVersionEncoded)-4)
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copy(uaVersionEncoded, baseVersionEncoded)
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// lastBlockVersion is a version message that contains all fields
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// through the LastBlock field.
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lastBlockVersion := uaVersion
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lastBlockVersion.LastBlock = 234234 // 0x392fa
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lastBlockVersionEncoded := make([]byte, len(baseVersionEncoded))
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copy(lastBlockVersionEncoded, baseVersionEncoded)
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tests := []struct {
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msg *MsgVersion // Expected message
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buf []byte // Wire encoding
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pver uint32 // Protocol version for wire encoding
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enc MessageEncoding // Message encoding format
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}{
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{
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&onlyRequiredVersion,
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onlyRequiredVersionEncoded,
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ProtocolVersion,
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BaseEncoding,
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},
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{
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&addrMeVersion,
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addrMeVersionEncoded,
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ProtocolVersion,
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BaseEncoding,
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},
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{
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&nonceVersion,
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nonceVersionEncoded,
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ProtocolVersion,
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BaseEncoding,
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},
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{
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&uaVersion,
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uaVersionEncoded,
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ProtocolVersion,
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BaseEncoding,
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},
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{
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&lastBlockVersion,
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lastBlockVersionEncoded,
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ProtocolVersion,
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BaseEncoding,
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},
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}
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for i, test := range tests {
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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, test.enc)
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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.msg) {
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t.Errorf("BtcDecode #%d\n got: %s want: %s", i,
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spew.Sdump(msg), spew.Sdump(test.msg))
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continue
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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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LastBlock: 234234, // 0x392fa
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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
|
|
0x29, 0xab, 0x5f, 0x49, 0x00, 0x00, 0x00, 0x00, // 64-bit Timestamp
|
|
// AddrYou -- No timestamp for NetAddress in version message
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0xff, 0xff, 0xc0, 0xa8, 0x00, 0x01, // IP 192.168.0.1
|
|
0x20, 0x8d, // Port 8333 in big-endian
|
|
// AddrMe -- No timestamp for NetAddress in version message
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01, // IP 127.0.0.1
|
|
0x20, 0x8d, // Port 8333 in big-endian
|
|
0xf3, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, // Nonce
|
|
0x10, // Varint for user agent length
|
|
0x2f, 0x62, 0x74, 0x63, 0x64, 0x74, 0x65, 0x73,
|
|
0x74, 0x3a, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x2f, // User agent
|
|
0xfa, 0x92, 0x03, 0x00, // Last block
|
|
}
|
|
|
|
// baseVersionBIP0037 is used in the various tests as a baseline MsgVersion for
|
|
// BIP0037.
|
|
var baseVersionBIP0037 = &MsgVersion{
|
|
ProtocolVersion: 70001,
|
|
Services: SFNodeNetwork,
|
|
Timestamp: time.Unix(0x495fab29, 0), // 2009-01-03 12:15:05 -0600 CST)
|
|
AddrYou: NetAddress{
|
|
Timestamp: time.Time{}, // Zero value -- no timestamp in version
|
|
Services: SFNodeNetwork,
|
|
IP: net.ParseIP("192.168.0.1"),
|
|
Port: 8333,
|
|
},
|
|
AddrMe: NetAddress{
|
|
Timestamp: time.Time{}, // Zero value -- no timestamp in version
|
|
Services: SFNodeNetwork,
|
|
IP: net.ParseIP("127.0.0.1"),
|
|
Port: 8333,
|
|
},
|
|
Nonce: 123123, // 0x1e0f3
|
|
UserAgent: "/btcdtest:0.0.1/",
|
|
LastBlock: 234234, // 0x392fa
|
|
}
|
|
|
|
// baseVersionBIP0037Encoded is the wire encoded bytes for baseVersionBIP0037
|
|
// using protocol version BIP0037Version and is used in the various tests.
|
|
var baseVersionBIP0037Encoded = []byte{
|
|
0x71, 0x11, 0x01, 0x00, // Protocol version 70001
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
|
|
0x29, 0xab, 0x5f, 0x49, 0x00, 0x00, 0x00, 0x00, // 64-bit Timestamp
|
|
// AddrYou -- No timestamp for NetAddress in version message
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0xff, 0xff, 0xc0, 0xa8, 0x00, 0x01, // IP 192.168.0.1
|
|
0x20, 0x8d, // Port 8333 in big-endian
|
|
// AddrMe -- No timestamp for NetAddress in version message
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01, // IP 127.0.0.1
|
|
0x20, 0x8d, // Port 8333 in big-endian
|
|
0xf3, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, // Nonce
|
|
0x10, // Varint for user agent length
|
|
0x2f, 0x62, 0x74, 0x63, 0x64, 0x74, 0x65, 0x73,
|
|
0x74, 0x3a, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x2f, // User agent
|
|
0xfa, 0x92, 0x03, 0x00, // Last block
|
|
0x01, // Relay tx
|
|
}
|