310 lines
8.8 KiB
Go
310 lines
8.8 KiB
Go
// Copyright 2014 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// go-ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package p2p
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"math/rand"
|
|
"net"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
var discard = Protocol{
|
|
Name: "discard",
|
|
Length: 1,
|
|
Run: func(p *Peer, rw MsgReadWriter) error {
|
|
for {
|
|
msg, err := rw.ReadMsg()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fmt.Printf("discarding %d\n", msg.Code)
|
|
if err = msg.Discard(); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
},
|
|
}
|
|
|
|
func testPeer(protos []Protocol) (func(), *conn, *Peer, <-chan DiscReason) {
|
|
fd1, fd2 := net.Pipe()
|
|
c1 := &conn{fd: fd1, transport: newTestTransport(randomID(), fd1)}
|
|
c2 := &conn{fd: fd2, transport: newTestTransport(randomID(), fd2)}
|
|
for _, p := range protos {
|
|
c1.caps = append(c1.caps, p.cap())
|
|
c2.caps = append(c2.caps, p.cap())
|
|
}
|
|
|
|
peer := newPeer(c1, protos)
|
|
errc := make(chan DiscReason, 1)
|
|
go func() { errc <- peer.run() }()
|
|
|
|
closer := func() { c2.close(errors.New("close func called")) }
|
|
return closer, c2, peer, errc
|
|
}
|
|
|
|
func TestPeerProtoReadMsg(t *testing.T) {
|
|
done := make(chan struct{})
|
|
proto := Protocol{
|
|
Name: "a",
|
|
Length: 5,
|
|
Run: func(peer *Peer, rw MsgReadWriter) error {
|
|
if err := ExpectMsg(rw, 2, []uint{1}); err != nil {
|
|
t.Error(err)
|
|
}
|
|
if err := ExpectMsg(rw, 3, []uint{2}); err != nil {
|
|
t.Error(err)
|
|
}
|
|
if err := ExpectMsg(rw, 4, []uint{3}); err != nil {
|
|
t.Error(err)
|
|
}
|
|
close(done)
|
|
return nil
|
|
},
|
|
}
|
|
|
|
closer, rw, _, errc := testPeer([]Protocol{proto})
|
|
defer closer()
|
|
|
|
Send(rw, baseProtocolLength+2, []uint{1})
|
|
Send(rw, baseProtocolLength+3, []uint{2})
|
|
Send(rw, baseProtocolLength+4, []uint{3})
|
|
|
|
select {
|
|
case <-done:
|
|
case err := <-errc:
|
|
t.Errorf("peer returned: %v", err)
|
|
case <-time.After(2 * time.Second):
|
|
t.Errorf("receive timeout")
|
|
}
|
|
}
|
|
|
|
func TestPeerProtoEncodeMsg(t *testing.T) {
|
|
proto := Protocol{
|
|
Name: "a",
|
|
Length: 2,
|
|
Run: func(peer *Peer, rw MsgReadWriter) error {
|
|
if err := SendItems(rw, 2); err == nil {
|
|
t.Error("expected error for out-of-range msg code, got nil")
|
|
}
|
|
if err := SendItems(rw, 1, "foo", "bar"); err != nil {
|
|
t.Errorf("write error: %v", err)
|
|
}
|
|
return nil
|
|
},
|
|
}
|
|
closer, rw, _, _ := testPeer([]Protocol{proto})
|
|
defer closer()
|
|
|
|
if err := ExpectMsg(rw, 17, []string{"foo", "bar"}); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
|
|
func TestPeerPing(t *testing.T) {
|
|
closer, rw, _, _ := testPeer(nil)
|
|
defer closer()
|
|
if err := SendItems(rw, pingMsg); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := ExpectMsg(rw, pongMsg, nil); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
|
|
func TestPeerDisconnect(t *testing.T) {
|
|
closer, rw, _, disc := testPeer(nil)
|
|
defer closer()
|
|
if err := SendItems(rw, discMsg, DiscQuitting); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
select {
|
|
case reason := <-disc:
|
|
if reason != DiscRequested {
|
|
t.Errorf("run returned wrong reason: got %v, want %v", reason, DiscRequested)
|
|
}
|
|
case <-time.After(500 * time.Millisecond):
|
|
t.Error("peer did not return")
|
|
}
|
|
}
|
|
|
|
// This test is supposed to verify that Peer can reliably handle
|
|
// multiple causes of disconnection occurring at the same time.
|
|
func TestPeerDisconnectRace(t *testing.T) {
|
|
maybe := func() bool { return rand.Intn(1) == 1 }
|
|
|
|
for i := 0; i < 1000; i++ {
|
|
protoclose := make(chan error)
|
|
protodisc := make(chan DiscReason)
|
|
closer, rw, p, disc := testPeer([]Protocol{
|
|
{
|
|
Name: "closereq",
|
|
Run: func(p *Peer, rw MsgReadWriter) error { return <-protoclose },
|
|
Length: 1,
|
|
},
|
|
{
|
|
Name: "disconnect",
|
|
Run: func(p *Peer, rw MsgReadWriter) error { p.Disconnect(<-protodisc); return nil },
|
|
Length: 1,
|
|
},
|
|
})
|
|
|
|
// Simulate incoming messages.
|
|
go SendItems(rw, baseProtocolLength+1)
|
|
go SendItems(rw, baseProtocolLength+2)
|
|
// Close the network connection.
|
|
go closer()
|
|
// Make protocol "closereq" return.
|
|
protoclose <- errors.New("protocol closed")
|
|
// Make protocol "disconnect" call peer.Disconnect
|
|
protodisc <- DiscAlreadyConnected
|
|
// In some cases, simulate something else calling peer.Disconnect.
|
|
if maybe() {
|
|
go p.Disconnect(DiscInvalidIdentity)
|
|
}
|
|
// In some cases, simulate remote requesting a disconnect.
|
|
if maybe() {
|
|
go SendItems(rw, discMsg, DiscQuitting)
|
|
}
|
|
|
|
select {
|
|
case <-disc:
|
|
case <-time.After(2 * time.Second):
|
|
// Peer.run should return quickly. If it doesn't the Peer
|
|
// goroutines are probably deadlocked. Call panic in order to
|
|
// show the stacks.
|
|
panic("Peer.run took to long to return.")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNewPeer(t *testing.T) {
|
|
name := "nodename"
|
|
caps := []Cap{{"foo", 2}, {"bar", 3}}
|
|
id := randomID()
|
|
p := NewPeer(id, name, caps)
|
|
if p.ID() != id {
|
|
t.Errorf("ID mismatch: got %v, expected %v", p.ID(), id)
|
|
}
|
|
if p.Name() != name {
|
|
t.Errorf("Name mismatch: got %v, expected %v", p.Name(), name)
|
|
}
|
|
if !reflect.DeepEqual(p.Caps(), caps) {
|
|
t.Errorf("Caps mismatch: got %v, expected %v", p.Caps(), caps)
|
|
}
|
|
|
|
p.Disconnect(DiscAlreadyConnected) // Should not hang
|
|
}
|
|
|
|
func TestMatchProtocols(t *testing.T) {
|
|
tests := []struct {
|
|
Remote []Cap
|
|
Local []Protocol
|
|
Match map[string]protoRW
|
|
}{
|
|
{
|
|
// No remote capabilities
|
|
Local: []Protocol{{Name: "a"}},
|
|
},
|
|
{
|
|
// No local protocols
|
|
Remote: []Cap{{Name: "a"}},
|
|
},
|
|
{
|
|
// No mutual protocols
|
|
Remote: []Cap{{Name: "a"}},
|
|
Local: []Protocol{{Name: "b"}},
|
|
},
|
|
{
|
|
// Some matches, some differences
|
|
Remote: []Cap{{Name: "local"}, {Name: "match1"}, {Name: "match2"}},
|
|
Local: []Protocol{{Name: "match1"}, {Name: "match2"}, {Name: "remote"}},
|
|
Match: map[string]protoRW{"match1": {Protocol: Protocol{Name: "match1"}}, "match2": {Protocol: Protocol{Name: "match2"}}},
|
|
},
|
|
{
|
|
// Various alphabetical ordering
|
|
Remote: []Cap{{Name: "aa"}, {Name: "ab"}, {Name: "bb"}, {Name: "ba"}},
|
|
Local: []Protocol{{Name: "ba"}, {Name: "bb"}, {Name: "ab"}, {Name: "aa"}},
|
|
Match: map[string]protoRW{"aa": {Protocol: Protocol{Name: "aa"}}, "ab": {Protocol: Protocol{Name: "ab"}}, "ba": {Protocol: Protocol{Name: "ba"}}, "bb": {Protocol: Protocol{Name: "bb"}}},
|
|
},
|
|
{
|
|
// No mutual versions
|
|
Remote: []Cap{{Version: 1}},
|
|
Local: []Protocol{{Version: 2}},
|
|
},
|
|
{
|
|
// Multiple versions, single common
|
|
Remote: []Cap{{Version: 1}, {Version: 2}},
|
|
Local: []Protocol{{Version: 2}, {Version: 3}},
|
|
Match: map[string]protoRW{"": {Protocol: Protocol{Version: 2}}},
|
|
},
|
|
{
|
|
// Multiple versions, multiple common
|
|
Remote: []Cap{{Version: 1}, {Version: 2}, {Version: 3}, {Version: 4}},
|
|
Local: []Protocol{{Version: 2}, {Version: 3}},
|
|
Match: map[string]protoRW{"": {Protocol: Protocol{Version: 3}}},
|
|
},
|
|
{
|
|
// Various version orderings
|
|
Remote: []Cap{{Version: 4}, {Version: 1}, {Version: 3}, {Version: 2}},
|
|
Local: []Protocol{{Version: 2}, {Version: 3}, {Version: 1}},
|
|
Match: map[string]protoRW{"": {Protocol: Protocol{Version: 3}}},
|
|
},
|
|
{
|
|
// Versions overriding sub-protocol lengths
|
|
Remote: []Cap{{Version: 1}, {Version: 2}, {Version: 3}, {Name: "a"}},
|
|
Local: []Protocol{{Version: 1, Length: 1}, {Version: 2, Length: 2}, {Version: 3, Length: 3}, {Name: "a"}},
|
|
Match: map[string]protoRW{"": {Protocol: Protocol{Version: 3}}, "a": {Protocol: Protocol{Name: "a"}, offset: 3}},
|
|
},
|
|
}
|
|
|
|
for i, tt := range tests {
|
|
result := matchProtocols(tt.Local, tt.Remote, nil)
|
|
if len(result) != len(tt.Match) {
|
|
t.Errorf("test %d: negotiation mismatch: have %v, want %v", i, len(result), len(tt.Match))
|
|
continue
|
|
}
|
|
// Make sure all negotiated protocols are needed and correct
|
|
for name, proto := range result {
|
|
match, ok := tt.Match[name]
|
|
if !ok {
|
|
t.Errorf("test %d, proto '%s': negotiated but shouldn't have", i, name)
|
|
continue
|
|
}
|
|
if proto.Name != match.Name {
|
|
t.Errorf("test %d, proto '%s': name mismatch: have %v, want %v", i, name, proto.Name, match.Name)
|
|
}
|
|
if proto.Version != match.Version {
|
|
t.Errorf("test %d, proto '%s': version mismatch: have %v, want %v", i, name, proto.Version, match.Version)
|
|
}
|
|
if proto.offset-baseProtocolLength != match.offset {
|
|
t.Errorf("test %d, proto '%s': offset mismatch: have %v, want %v", i, name, proto.offset-baseProtocolLength, match.offset)
|
|
}
|
|
}
|
|
// Make sure no protocols missed negotiation
|
|
for name, _ := range tt.Match {
|
|
if _, ok := result[name]; !ok {
|
|
t.Errorf("test %d, proto '%s': not negotiated, should have", i, name)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
}
|