network: drop Network from Message

It's not used any more.

pkg/network/helper_test.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/nspcc-dev/neo-go/internal/fakechain"
-	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/network/capability"
 	"github.com/nspcc-dev/neo-go/pkg/network/payload"
@@ -122,7 +121,7 @@ func (p *localPeer) EnqueueP2PPacket(m []byte) error {
 	return p.EnqueueHPPacket(true, m)
 }
 func (p *localPeer) EnqueueHPPacket(_ bool, m []byte) error {
-	msg := &Message{Network: netmode.UnitTestNet}
+	msg := &Message{}
 	r := io.NewBinReaderFromBuf(m)
 	err := msg.Decode(r)
 	if err == nil {

pkg/network/message.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/io"
@@ -30,9 +29,6 @@ type Message struct {
 	// Compressed message payload.
 	compressedPayload []byte
 
-	// Network this message comes from, it has to be set upon Message
-	// creation for correct decoding.
-	Network netmode.Magic
 	// StateRootInHeader specifies if state root is included in block header.
 	// This is needed for correct decoding.
 	StateRootInHeader bool
@@ -87,8 +83,7 @@ const (
 	CMDAlert CommandType = 0x40
 )
 
-// NewMessage returns a new message with the given payload. It's intended to be
-// used for messages to be sent, thus it doesn't care much about the Network.
+// NewMessage returns a new message with the given payload.
 func NewMessage(cmd CommandType, p payload.Payload) *Message {
 	return &Message{
 		Command: cmd,

pkg/network/message_test.go

@@ -130,10 +130,9 @@ func TestEncodeDecodeBlock(t *testing.T) {
 	})
 	t.Run("invalid state root enabled setting", func(t *testing.T) {
 		expected := NewMessage(CMDBlock, newDummyBlock(31, 1))
-		expected.Network = netmode.UnitTestNet
 		data, err := testserdes.Encode(expected)
 		require.NoError(t, err)
-		require.Error(t, testserdes.Decode(data, &Message{Network: netmode.UnitTestNet, StateRootInHeader: true}))
+		require.Error(t, testserdes.Decode(data, &Message{StateRootInHeader: true}))
 	})
 }
 
@@ -241,7 +240,7 @@ func TestInvalidMessages(t *testing.T) {
 		require.NoError(t, err)
 		require.True(t, m.Flags&Compressed == 0)
 		data[0] |= byte(Compressed)
-		require.Error(t, testserdes.Decode(data, &Message{Network: netmode.UnitTestNet}))
+		require.Error(t, testserdes.Decode(data, &Message{}))
 	})
 	t.Run("invalid command", func(t *testing.T) {
 		testEncodeDecodeFail(t, CommandType(0xFF), &payload.Version{Magic: netmode.UnitTestNet})
@@ -253,7 +252,7 @@ func TestInvalidMessages(t *testing.T) {
 		w.WriteB(byte(m.Command))
 		w.WriteVarBytes(make([]byte, payload.MaxSize+1))
 		require.NoError(t, w.Err)
-		require.Error(t, testserdes.Decode(w.Bytes(), &Message{Network: netmode.UnitTestNet}))
+		require.Error(t, testserdes.Decode(w.Bytes(), &Message{}))
 	})
 	t.Run("fail to encode message if payload can't be serialized", func(t *testing.T) {
 		m := NewMessage(CMDBlock, failSer(true))
@@ -270,7 +269,7 @@ func TestInvalidMessages(t *testing.T) {
 		data, err := testserdes.Encode(m)
 		require.NoError(t, err)
 		data = data[:len(data)-1]
-		require.Error(t, testserdes.Decode(data, &Message{Network: netmode.UnitTestNet}))
+		require.Error(t, testserdes.Decode(data, &Message{}))
 	})
 }
 
@@ -310,19 +309,17 @@ func newDummyTx() *transaction.Transaction {
 
 func testEncodeDecode(t *testing.T, cmd CommandType, p payload.Payload) *Message {
 	expected := NewMessage(cmd, p)
-	expected.Network = netmode.UnitTestNet
-	actual := &Message{Network: netmode.UnitTestNet}
+	actual := &Message{}
 	testserdes.EncodeDecode(t, expected, actual)
 	return actual
 }
 
 func testEncodeDecodeFail(t *testing.T, cmd CommandType, p payload.Payload) *Message {
 	expected := NewMessage(cmd, p)
-	expected.Network = netmode.UnitTestNet
 	data, err := testserdes.Encode(expected)
 	require.NoError(t, err)
 
-	actual := &Message{Network: netmode.UnitTestNet}
+	actual := &Message{}
 	require.Error(t, testserdes.Decode(data, actual))
 	return actual
 }

pkg/network/server_test.go

@@ -12,7 +12,6 @@ import (
 	"github.com/nspcc-dev/neo-go/internal/fakechain"
 	"github.com/nspcc-dev/neo-go/internal/random"
 	"github.com/nspcc-dev/neo-go/pkg/config"
-	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/consensus"
 	"github.com/nspcc-dev/neo-go/pkg/core"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
@@ -372,7 +371,6 @@ func (s *Server) testHandleMessage(t *testing.T, p Peer, cmd CommandType, pl pay
 		p.(*localPeer).handshaked = true
 	}
 	msg := NewMessage(cmd, pl)
-	msg.Network = netmode.UnitTestNet
 	require.NoError(t, s.handleMessage(p, msg))
 	return s
 }
@@ -593,7 +591,6 @@ func TestGetBlocks(t *testing.T) {
 	})
 	t.Run("invalid start", func(t *testing.T) {
 		msg := NewMessage(CMDGetBlocks, &payload.GetBlocks{HashStart: util.Uint256{}, Count: -1})
-		msg.Network = netmode.UnitTestNet
 		require.Error(t, s.handleMessage(p, msg))
 	})
 }
@@ -824,7 +821,6 @@ func TestAddrs(t *testing.T) {
 
 	t.Run("CMDAddr not requested", func(t *testing.T) {
 		msg := NewMessage(CMDAddr, pl)
-		msg.Network = netmode.UnitTestNet
 		require.Error(t, s.handleMessage(p, msg))
 	})
 }

pkg/network/tcp_peer.go

@@ -165,7 +165,7 @@ func (p *TCPPeer) handleConn() {
 	if err == nil {
 		r := io.NewBinReaderFromIO(p.conn)
 		for {
-			msg := &Message{Network: p.server.network, StateRootInHeader: p.server.stateRootInHeader}
+			msg := &Message{StateRootInHeader: p.server.stateRootInHeader}
 			err = msg.Decode(r)
 
 			if err == payload.ErrTooManyHeaders {