forked from cerc-io/plugeth
p2p: when peer is removed remove it also from dial history (#16060)
This change removes a peer information from dialing history when peer is removed from static list. It allows to force a server to re-dial concrete peer if it is needed. In our case we are running geth node on mobile devices, and it is common for a network connection to flap on mobile. Almost every time it flaps or network connection is changed from cellular to wifi peers are disconnected with read timeout. And usually it takes 30 seconds (default expiration timeout) to recover connection with static peers after connectivity is restored. This change allows us to reconnect with peers almost immediately and it seems harmless enough.
This commit is contained in:
parent
7d57824663
commit
14c76371ba
13
p2p/dial.go
13
p2p/dial.go
@ -154,6 +154,9 @@ func (s *dialstate) addStatic(n *discover.Node) {
|
|||||||
func (s *dialstate) removeStatic(n *discover.Node) {
|
func (s *dialstate) removeStatic(n *discover.Node) {
|
||||||
// This removes a task so future attempts to connect will not be made.
|
// This removes a task so future attempts to connect will not be made.
|
||||||
delete(s.static, n.ID)
|
delete(s.static, n.ID)
|
||||||
|
// This removes a previous dial timestamp so that application
|
||||||
|
// can force a server to reconnect with chosen peer immediately.
|
||||||
|
s.hist.remove(n.ID)
|
||||||
}
|
}
|
||||||
|
|
||||||
func (s *dialstate) newTasks(nRunning int, peers map[discover.NodeID]*Peer, now time.Time) []task {
|
func (s *dialstate) newTasks(nRunning int, peers map[discover.NodeID]*Peer, now time.Time) []task {
|
||||||
@ -390,6 +393,16 @@ func (h dialHistory) min() pastDial {
|
|||||||
}
|
}
|
||||||
func (h *dialHistory) add(id discover.NodeID, exp time.Time) {
|
func (h *dialHistory) add(id discover.NodeID, exp time.Time) {
|
||||||
heap.Push(h, pastDial{id, exp})
|
heap.Push(h, pastDial{id, exp})
|
||||||
|
|
||||||
|
}
|
||||||
|
func (h *dialHistory) remove(id discover.NodeID) bool {
|
||||||
|
for i, v := range *h {
|
||||||
|
if v.id == id {
|
||||||
|
heap.Remove(h, i)
|
||||||
|
return true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return false
|
||||||
}
|
}
|
||||||
func (h dialHistory) contains(id discover.NodeID) bool {
|
func (h dialHistory) contains(id discover.NodeID) bool {
|
||||||
for _, v := range h {
|
for _, v := range h {
|
||||||
|
@ -515,6 +515,50 @@ func TestDialStateStaticDial(t *testing.T) {
|
|||||||
})
|
})
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// This test checks that static peers will be redialed immediately if they were re-added to a static list.
|
||||||
|
func TestDialStaticAfterReset(t *testing.T) {
|
||||||
|
wantStatic := []*discover.Node{
|
||||||
|
{ID: uintID(1)},
|
||||||
|
{ID: uintID(2)},
|
||||||
|
}
|
||||||
|
|
||||||
|
rounds := []round{
|
||||||
|
// Static dials are launched for the nodes that aren't yet connected.
|
||||||
|
{
|
||||||
|
peers: nil,
|
||||||
|
new: []task{
|
||||||
|
&dialTask{flags: staticDialedConn, dest: &discover.Node{ID: uintID(1)}},
|
||||||
|
&dialTask{flags: staticDialedConn, dest: &discover.Node{ID: uintID(2)}},
|
||||||
|
},
|
||||||
|
},
|
||||||
|
// No new dial tasks, all peers are connected.
|
||||||
|
{
|
||||||
|
peers: []*Peer{
|
||||||
|
{rw: &conn{flags: staticDialedConn, id: uintID(1)}},
|
||||||
|
{rw: &conn{flags: staticDialedConn, id: uintID(2)}},
|
||||||
|
},
|
||||||
|
done: []task{
|
||||||
|
&dialTask{flags: staticDialedConn, dest: &discover.Node{ID: uintID(1)}},
|
||||||
|
&dialTask{flags: staticDialedConn, dest: &discover.Node{ID: uintID(2)}},
|
||||||
|
},
|
||||||
|
new: []task{
|
||||||
|
&waitExpireTask{Duration: 30 * time.Second},
|
||||||
|
},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
dTest := dialtest{
|
||||||
|
init: newDialState(wantStatic, nil, fakeTable{}, 0, nil),
|
||||||
|
rounds: rounds,
|
||||||
|
}
|
||||||
|
runDialTest(t, dTest)
|
||||||
|
for _, n := range wantStatic {
|
||||||
|
dTest.init.removeStatic(n)
|
||||||
|
dTest.init.addStatic(n)
|
||||||
|
}
|
||||||
|
// without removing peers they will be considered recently dialed
|
||||||
|
runDialTest(t, dTest)
|
||||||
|
}
|
||||||
|
|
||||||
// This test checks that past dials are not retried for some time.
|
// This test checks that past dials are not retried for some time.
|
||||||
func TestDialStateCache(t *testing.T) {
|
func TestDialStateCache(t *testing.T) {
|
||||||
wantStatic := []*discover.Node{
|
wantStatic := []*discover.Node{
|
||||||
|
Loading…
Reference in New Issue
Block a user