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peer: Remove error return from Connect.

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This commit is contained in:
Jonathan Gillham 2016-02-10 14:52:59 +00:00
parent 5cbd1f85bf
commit 777ccdade3
4 changed files with 45 additions and 64 deletions
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10
peer/example_test.go
View file

@ -39,10 +39,7 @@ func mockRemotePeer() error {
// Create and start the inbound peer.
p := peer.NewInboundPeer(peerCfg)
if err := p.Connect(conn); err != nil {
fmt.Printf("Connect: error %v\n", err)
return
}
p.Connect(conn)
}()
return nil
@ -93,10 +90,7 @@ func Example_newOutboundPeer() {
fmt.Printf("net.Dial: error %v\n", err)
return
}
if err := p.Connect(conn); err != nil {
fmt.Printf("Connect: error %v\n", err)
return
}
p.Connect(conn)
// Wait for the verack message or timeout in case of failure.
select {

11
peer/peer.go
View file

@ -775,7 +775,6 @@ func (p *Peer) pushVersionMsg() error {
// recently seen nonces.
nonce, err := wire.RandomUint64()
if err != nil {
fmt.Println(err)
return err
}
sentNonces.Add(nonce)
@ -1951,10 +1950,10 @@ func (p *Peer) QueueInventory(invVect *wire.InvVect) {
// Connect uses the given conn to connect to the peer. Calling this function when
// the peer is already connected will have no effect.
func (p *Peer) Connect(conn net.Conn) error {
func (p *Peer) Connect(conn net.Conn) {
// Already connected?
if !atomic.CompareAndSwapInt32(&p.connected, 0, 1) {
return nil
return
}
if p.inbound {
@ -1963,7 +1962,11 @@ func (p *Peer) Connect(conn net.Conn) error {
p.conn = conn
p.timeConnected = time.Now()
return p.start()
go func() {
if err := p.start(); err != nil {
log.Errorf("Cannot start peer %v: %v", p, err)
}
}()
}
// Connected returns whether or not the peer is currently connected.

77
peer/peer_test.go
View file

@ -245,16 +245,13 @@ func TestPeerConnection(t *testing.T) {
&conn{raddr: "10.0.0.2:8333"},
)
inPeer := peer.NewInboundPeer(peerCfg)
if err := inPeer.Connect(inConn); err != nil {
return nil, nil, err
}
inPeer.Connect(inConn)
outPeer, err := peer.NewOutboundPeer(peerCfg, "10.0.0.2:8333")
if err != nil {
return nil, nil, err
}
if err := outPeer.Connect(outConn); err != nil {
return nil, nil, err
}
outPeer.Connect(outConn)
for i := 0; i < 2; i++ {
select {
@ -274,16 +271,14 @@ func TestPeerConnection(t *testing.T) {
&conn{raddr: "10.0.0.2:8333"},
)
inPeer := peer.NewInboundPeer(peerCfg)
if err := inPeer.Connect(inConn); err != nil {
return nil, nil, err
}
inPeer.Connect(inConn)
outPeer, err := peer.NewOutboundPeer(peerCfg, "10.0.0.2:8333")
if err != nil {
return nil, nil, err
}
if err := outPeer.Connect(outConn); err != nil {
return nil, nil, err
}
outPeer.Connect(outConn)
for i := 0; i < 2; i++ {
select {
case <-verack:
@ -393,10 +388,8 @@ func TestPeerListeners(t *testing.T) {
&conn{raddr: "10.0.0.2:8333"},
)
inPeer := peer.NewInboundPeer(peerCfg)
if err := inPeer.Connect(inConn); err != nil {
t.Errorf("TestPeerListeners: unexpected err %v\n", err)
return
}
inPeer.Connect(inConn)
peerCfg.Listeners = peer.MessageListeners{
OnVerAck: func(p *peer.Peer, msg *wire.MsgVerAck) {
verack <- struct{}{}
@ -407,10 +400,8 @@ func TestPeerListeners(t *testing.T) {
t.Errorf("NewOutboundPeer: unexpected err %v\n", err)
return
}
if err := outPeer.Connect(outConn); err != nil {
t.Errorf("TestPeerListeners: unexpected err %v\n", err)
return
}
outPeer.Connect(outConn)
for i := 0; i < 2; i++ {
select {
case <-verack:
@ -524,14 +515,11 @@ func TestPeerListeners(t *testing.T) {
// TestOutboundPeer tests that the outbound peer works as expected.
func TestOutboundPeer(t *testing.T) {
// Use a mock NewestBlock func to test errs
var errBlockNotFound = errors.New("newest block not found")
var mockNewestSha = func() (*wire.ShaHash, int32, error) {
return nil, 0, errBlockNotFound
}
peerCfg := &peer.Config{
NewestBlock: mockNewestSha,
NewestBlock: func() (*wire.ShaHash, int32, error) {
return nil, 0, errors.New("newest block not found")
},
UserAgentName: "peer",
UserAgentVersion: "1.0",
ChainParams: &chaincfg.MainNetParams,
@ -547,26 +535,35 @@ func TestOutboundPeer(t *testing.T) {
return
}
wantErr := errBlockNotFound
if err := p.Connect(c); err != wantErr {
t.Errorf("Connect: expected err %v, got %v\n", wantErr, err)
return
// Test trying to connect twice.
p.Connect(c)
p.Connect(c)
disconnected := make(chan struct{})
go func() {
p.WaitForDisconnect()
disconnected <- struct{}{}
}()
select {
case <-disconnected:
case <-time.After(time.Second):
t.Fatal("Peer did not automatically disconnect.")
}
// Test already connected.
if err := p.Connect(c); err != nil {
t.Errorf("Connect: unexpected err %v\n", err)
return
if p.Connected() {
t.Fatalf("Should not be connected as NewestBlock produces error.")
}
// Test Queue Inv
fakeBlockHash := &wire.ShaHash{0: 0x00, 1: 0x01}
fakeInv := wire.NewInvVect(wire.InvTypeBlock, fakeBlockHash)
// Should be noops as the peer could not connect.
p.QueueInventory(fakeInv)
p.AddKnownInventory(fakeInv)
p.QueueInventory(fakeInv)
// Test Queue Message
fakeMsg := wire.NewMsgVerAck()
p.QueueMessage(fakeMsg, nil)
done := make(chan struct{})
@ -591,10 +588,7 @@ func TestOutboundPeer(t *testing.T) {
t.Errorf("NewOutboundPeer: unexpected err - %v\n", err)
return
}
if err := p1.Connect(c1); err != nil {
t.Errorf("Connect: unexpected err %v\n", err)
return
}
p1.Connect(c1)
// Test update latest block
latestBlockSha, err := wire.NewShaHashFromStr("1a63f9cdff1752e6375c8c76e543a71d239e1a2e5c6db1aa679")
@ -624,10 +618,7 @@ func TestOutboundPeer(t *testing.T) {
t.Errorf("NewOutboundPeer: unexpected err - %v\n", err)
return
}
if err := p2.Connect(c2); err != nil {
t.Errorf("Connect: unexpected err %v\n", err)
return
}
p2.Connect(c2)
// Test PushXXX
var addrs []*wire.NetAddress

11
server.go
View file

@ -1573,12 +1573,7 @@ func (s *server) listenHandler(listener net.Listener) {
sp := newServerPeer(s, false)
sp.Peer = peer.NewInboundPeer(newPeerConfig(sp))
go s.peerDoneHandler(sp)
if err := sp.Connect(conn); err != nil {
if atomic.LoadInt32(&s.shutdown) == 0 {
srvrLog.Errorf("Can't accept connection: %v", err)
}
continue
}
sp.Connect(conn)
}
s.wg.Done()
srvrLog.Tracef("Listener handler done for %s", listener.Addr())
@ -1674,9 +1669,7 @@ func (s *server) establishConn(sp *serverPeer) error {
if err != nil {
return err
}
if err := sp.Connect(conn); err != nil {
return err
}
sp.Connect(conn)
srvrLog.Debugf("Connected to %s", sp.Addr())
s.addrManager.Attempt(sp.NA())
return nil