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-rw-r--r--swarm/network/stream/common_test.go4
-rw-r--r--swarm/network/stream/delivery_test.go8
-rw-r--r--swarm/network/stream/messages.go10
-rw-r--r--swarm/network/stream/peer.go11
-rw-r--r--swarm/network/stream/stream.go3
-rw-r--r--swarm/network/stream/streamer_test.go181
6 files changed, 198 insertions, 19 deletions
diff --git a/swarm/network/stream/common_test.go b/swarm/network/stream/common_test.go
index e0d776e34..24de51158 100644
--- a/swarm/network/stream/common_test.go
+++ b/swarm/network/stream/common_test.go
@@ -84,7 +84,7 @@ func createGlobalStore() (string, *mockdb.GlobalStore, error) {
return globalStoreDir, globalStore, nil
}
-func newStreamerTester(t *testing.T) (*p2ptest.ProtocolTester, *Registry, *storage.LocalStore, func(), error) {
+func newStreamerTester(t *testing.T, registryOptions *RegistryOptions) (*p2ptest.ProtocolTester, *Registry, *storage.LocalStore, func(), error) {
// setup
addr := network.RandomAddr() // tested peers peer address
to := network.NewKademlia(addr.OAddr, network.NewKadParams())
@@ -114,7 +114,7 @@ func newStreamerTester(t *testing.T) (*p2ptest.ProtocolTester, *Registry, *stora
delivery := NewDelivery(to, netStore)
netStore.NewNetFetcherFunc = network.NewFetcherFactory(delivery.RequestFromPeers, true).New
- streamer := NewRegistry(addr, delivery, netStore, state.NewInmemoryStore(), nil)
+ streamer := NewRegistry(addr, delivery, netStore, state.NewInmemoryStore(), registryOptions)
teardown := func() {
streamer.Close()
removeDataDir()
diff --git a/swarm/network/stream/delivery_test.go b/swarm/network/stream/delivery_test.go
index ece54d4ee..016a8d15e 100644
--- a/swarm/network/stream/delivery_test.go
+++ b/swarm/network/stream/delivery_test.go
@@ -39,7 +39,7 @@ import (
)
func TestStreamerRetrieveRequest(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -75,7 +75,7 @@ func TestStreamerRetrieveRequest(t *testing.T) {
}
func TestStreamerUpstreamRetrieveRequestMsgExchangeWithoutStore(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -127,7 +127,7 @@ func TestStreamerUpstreamRetrieveRequestMsgExchangeWithoutStore(t *testing.T) {
// upstream request server receives a retrieve Request and responds with
// offered hashes or delivery if skipHash is set to true
func TestStreamerUpstreamRetrieveRequestMsgExchange(t *testing.T) {
- tester, streamer, localStore, teardown, err := newStreamerTester(t)
+ tester, streamer, localStore, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -221,7 +221,7 @@ func TestStreamerUpstreamRetrieveRequestMsgExchange(t *testing.T) {
}
func TestStreamerDownstreamChunkDeliveryMsgExchange(t *testing.T) {
- tester, streamer, localStore, teardown, err := newStreamerTester(t)
+ tester, streamer, localStore, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
diff --git a/swarm/network/stream/messages.go b/swarm/network/stream/messages.go
index 2e1a81e82..482af25f5 100644
--- a/swarm/network/stream/messages.go
+++ b/swarm/network/stream/messages.go
@@ -84,11 +84,13 @@ func (p *Peer) handleSubscribeMsg(ctx context.Context, req *SubscribeMsg) (err e
defer func() {
if err != nil {
- if e := p.Send(context.TODO(), SubscribeErrorMsg{
+ // The error will be sent as a subscribe error message
+ // and will not be returned as it will prevent any new message
+ // exchange between peers over p2p. Instead, error will be returned
+ // only if there is one from sending subscribe error message.
+ err = p.Send(context.TODO(), SubscribeErrorMsg{
Error: err.Error(),
- }); e != nil {
- log.Error("send stream subscribe error message", "err", err)
- }
+ })
}
}()
diff --git a/swarm/network/stream/peer.go b/swarm/network/stream/peer.go
index 1466a7a9c..aeaf7bbfa 100644
--- a/swarm/network/stream/peer.go
+++ b/swarm/network/stream/peer.go
@@ -18,6 +18,7 @@ package stream
import (
"context"
+ "errors"
"fmt"
"sync"
"time"
@@ -46,6 +47,10 @@ func (e *notFoundError) Error() string {
return fmt.Sprintf("%s not found for stream %q", e.t, e.s)
}
+// ErrMaxPeerServers will be returned if peer server limit is reached.
+// It will be sent in the SubscribeErrorMsg.
+var ErrMaxPeerServers = errors.New("max peer servers")
+
// Peer is the Peer extension for the streaming protocol
type Peer struct {
*protocols.Peer
@@ -204,6 +209,11 @@ func (p *Peer) setServer(s Stream, o Server, priority uint8) (*server, error) {
if p.servers[s] != nil {
return nil, fmt.Errorf("server %s already registered", s)
}
+
+ if p.streamer.maxPeerServers > 0 && len(p.servers) >= p.streamer.maxPeerServers {
+ return nil, ErrMaxPeerServers
+ }
+
os := &server{
Server: o,
stream: s,
@@ -346,6 +356,7 @@ func (p *Peer) removeClient(s Stream) error {
return newNotFoundError("client", s)
}
client.close()
+ delete(p.clients, s)
return nil
}
diff --git a/swarm/network/stream/stream.go b/swarm/network/stream/stream.go
index 319fc62c9..6dcf31165 100644
--- a/swarm/network/stream/stream.go
+++ b/swarm/network/stream/stream.go
@@ -60,6 +60,7 @@ type Registry struct {
delivery *Delivery
intervalsStore state.Store
doRetrieve bool
+ maxPeerServers int
}
// RegistryOptions holds optional values for NewRegistry constructor.
@@ -68,6 +69,7 @@ type RegistryOptions struct {
DoSync bool
DoRetrieve bool
SyncUpdateDelay time.Duration
+ MaxPeerServers int // The limit of servers for each peer in registry
}
// NewRegistry is Streamer constructor
@@ -87,6 +89,7 @@ func NewRegistry(addr *network.BzzAddr, delivery *Delivery, syncChunkStore stora
delivery: delivery,
intervalsStore: intervalsStore,
doRetrieve: options.DoRetrieve,
+ maxPeerServers: options.MaxPeerServers,
}
streamer.api = NewAPI(streamer)
delivery.getPeer = streamer.getPeer
diff --git a/swarm/network/stream/streamer_test.go b/swarm/network/stream/streamer_test.go
index 06e96b9a9..4f480b0ac 100644
--- a/swarm/network/stream/streamer_test.go
+++ b/swarm/network/stream/streamer_test.go
@@ -19,6 +19,7 @@ package stream
import (
"bytes"
"context"
+ "strconv"
"testing"
"time"
@@ -27,7 +28,7 @@ import (
)
func TestStreamerSubscribe(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -41,7 +42,7 @@ func TestStreamerSubscribe(t *testing.T) {
}
func TestStreamerRequestSubscription(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -125,7 +126,7 @@ func (self *testServer) Close() {
}
func TestStreamerDownstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -218,7 +219,7 @@ func TestStreamerDownstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
}
func TestStreamerUpstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -285,7 +286,7 @@ func TestStreamerUpstreamSubscribeUnsubscribeMsgExchange(t *testing.T) {
}
func TestStreamerUpstreamSubscribeUnsubscribeMsgExchangeLive(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -351,7 +352,7 @@ func TestStreamerUpstreamSubscribeUnsubscribeMsgExchangeLive(t *testing.T) {
}
func TestStreamerUpstreamSubscribeErrorMsgExchange(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -395,7 +396,7 @@ func TestStreamerUpstreamSubscribeErrorMsgExchange(t *testing.T) {
}
func TestStreamerUpstreamSubscribeLiveAndHistory(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -460,7 +461,7 @@ func TestStreamerUpstreamSubscribeLiveAndHistory(t *testing.T) {
}
func TestStreamerDownstreamOfferedHashesMsgExchange(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -559,7 +560,7 @@ func TestStreamerDownstreamOfferedHashesMsgExchange(t *testing.T) {
}
func TestStreamerRequestSubscriptionQuitMsgExchange(t *testing.T) {
- tester, streamer, _, teardown, err := newStreamerTester(t)
+ tester, streamer, _, teardown, err := newStreamerTester(t, nil)
defer teardown()
if err != nil {
t.Fatal(err)
@@ -685,3 +686,165 @@ func TestStreamerRequestSubscriptionQuitMsgExchange(t *testing.T) {
t.Fatal(err)
}
}
+
+// TestMaxPeerServersWithUnsubscribe creates a registry with a limited
+// number of stream servers, and performs a test with subscriptions and
+// unsubscriptions, checking if unsubscriptions will remove streams,
+// leaving place for new streams.
+func TestMaxPeerServersWithUnsubscribe(t *testing.T) {
+ var maxPeerServers = 6
+ tester, streamer, _, teardown, err := newStreamerTester(t, &RegistryOptions{
+ MaxPeerServers: maxPeerServers,
+ })
+ defer teardown()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ streamer.RegisterServerFunc("foo", func(p *Peer, t string, live bool) (Server, error) {
+ return newTestServer(t), nil
+ })
+
+ peerID := tester.IDs[0]
+
+ for i := 0; i < maxPeerServers+10; i++ {
+ stream := NewStream("foo", strconv.Itoa(i), true)
+
+ err = tester.TestExchanges(p2ptest.Exchange{
+ Label: "Subscribe message",
+ Triggers: []p2ptest.Trigger{
+ {
+ Code: 4,
+ Msg: &SubscribeMsg{
+ Stream: stream,
+ Priority: Top,
+ },
+ Peer: peerID,
+ },
+ },
+ Expects: []p2ptest.Expect{
+ {
+ Code: 1,
+ Msg: &OfferedHashesMsg{
+ Stream: stream,
+ HandoverProof: &HandoverProof{
+ Handover: &Handover{},
+ },
+ Hashes: make([]byte, HashSize),
+ From: 1,
+ To: 1,
+ },
+ Peer: peerID,
+ },
+ },
+ })
+
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ err = tester.TestExchanges(p2ptest.Exchange{
+ Label: "unsubscribe message",
+ Triggers: []p2ptest.Trigger{
+ {
+ Code: 0,
+ Msg: &UnsubscribeMsg{
+ Stream: stream,
+ },
+ Peer: peerID,
+ },
+ },
+ })
+
+ if err != nil {
+ t.Fatal(err)
+ }
+ }
+}
+
+// TestMaxPeerServersWithoutUnsubscribe creates a registry with a limited
+// number of stream servers, and performs subscriptions to detect sunscriptions
+// error message exchange.
+func TestMaxPeerServersWithoutUnsubscribe(t *testing.T) {
+ var maxPeerServers = 6
+ tester, streamer, _, teardown, err := newStreamerTester(t, &RegistryOptions{
+ MaxPeerServers: maxPeerServers,
+ })
+ defer teardown()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ streamer.RegisterServerFunc("foo", func(p *Peer, t string, live bool) (Server, error) {
+ return newTestServer(t), nil
+ })
+
+ peerID := tester.IDs[0]
+
+ for i := 0; i < maxPeerServers+10; i++ {
+ stream := NewStream("foo", strconv.Itoa(i), true)
+
+ if i >= maxPeerServers {
+ err = tester.TestExchanges(p2ptest.Exchange{
+ Label: "Subscribe message",
+ Triggers: []p2ptest.Trigger{
+ {
+ Code: 4,
+ Msg: &SubscribeMsg{
+ Stream: stream,
+ Priority: Top,
+ },
+ Peer: peerID,
+ },
+ },
+ Expects: []p2ptest.Expect{
+ {
+ Code: 7,
+ Msg: &SubscribeErrorMsg{
+ Error: ErrMaxPeerServers.Error(),
+ },
+ Peer: peerID,
+ },
+ },
+ })
+
+ if err != nil {
+ t.Fatal(err)
+ }
+ continue
+ }
+
+ err = tester.TestExchanges(p2ptest.Exchange{
+ Label: "Subscribe message",
+ Triggers: []p2ptest.Trigger{
+ {
+ Code: 4,
+ Msg: &SubscribeMsg{
+ Stream: stream,
+ Priority: Top,
+ },
+ Peer: peerID,
+ },
+ },
+ Expects: []p2ptest.Expect{
+ {
+ Code: 1,
+ Msg: &OfferedHashesMsg{
+ Stream: stream,
+ HandoverProof: &HandoverProof{
+ Handover: &Handover{},
+ },
+ Hashes: make([]byte, HashSize),
+ From: 1,
+ To: 1,
+ },
+ Peer: peerID,
+ },
+ },
+ })
+
+ if err != nil {
+ t.Fatal(err)
+ }
+ }
+}
generated by cgit (git 2.34.1) at 2024-11-14 21:43:58 +0800