forked from cerc-io/plugeth
3f047be5aa
All code outside of cmd/ is licensed as LGPL. The headers now reflect this by calling the whole work "the go-ethereum library".
499 lines
15 KiB
Go
499 lines
15 KiB
Go
// Copyright 2015 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 (
|
|
"encoding/binary"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/davecgh/go-spew/spew"
|
|
"github.com/ethereum/go-ethereum/p2p/discover"
|
|
)
|
|
|
|
func init() {
|
|
spew.Config.Indent = "\t"
|
|
}
|
|
|
|
type dialtest struct {
|
|
init *dialstate // state before and after the test.
|
|
rounds []round
|
|
}
|
|
|
|
type round struct {
|
|
peers []*Peer // current peer set
|
|
done []task // tasks that got done this round
|
|
new []task // the result must match this one
|
|
}
|
|
|
|
func runDialTest(t *testing.T, test dialtest) {
|
|
var (
|
|
vtime time.Time
|
|
running int
|
|
)
|
|
pm := func(ps []*Peer) map[discover.NodeID]*Peer {
|
|
m := make(map[discover.NodeID]*Peer)
|
|
for _, p := range ps {
|
|
m[p.rw.id] = p
|
|
}
|
|
return m
|
|
}
|
|
for i, round := range test.rounds {
|
|
for _, task := range round.done {
|
|
running--
|
|
if running < 0 {
|
|
panic("running task counter underflow")
|
|
}
|
|
test.init.taskDone(task, vtime)
|
|
}
|
|
|
|
new := test.init.newTasks(running, pm(round.peers), vtime)
|
|
if !sametasks(new, round.new) {
|
|
t.Errorf("round %d: new tasks mismatch:\ngot %v\nwant %v\nstate: %v\nrunning: %v\n",
|
|
i, spew.Sdump(new), spew.Sdump(round.new), spew.Sdump(test.init), spew.Sdump(running))
|
|
}
|
|
|
|
// Time advances by 16 seconds on every round.
|
|
vtime = vtime.Add(16 * time.Second)
|
|
running += len(new)
|
|
}
|
|
}
|
|
|
|
type fakeTable []*discover.Node
|
|
|
|
func (t fakeTable) Self() *discover.Node { return new(discover.Node) }
|
|
func (t fakeTable) Close() {}
|
|
func (t fakeTable) Bootstrap([]*discover.Node) {}
|
|
func (t fakeTable) Lookup(target discover.NodeID) []*discover.Node {
|
|
return nil
|
|
}
|
|
func (t fakeTable) ReadRandomNodes(buf []*discover.Node) int {
|
|
return copy(buf, t)
|
|
}
|
|
|
|
// This test checks that dynamic dials are launched from discovery results.
|
|
func TestDialStateDynDial(t *testing.T) {
|
|
runDialTest(t, dialtest{
|
|
init: newDialState(nil, fakeTable{}, 5),
|
|
rounds: []round{
|
|
// A discovery query is launched.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
new: []task{&discoverTask{bootstrap: true}},
|
|
},
|
|
// Dynamic dials are launched when it completes.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
done: []task{
|
|
&discoverTask{bootstrap: true, results: []*discover.Node{
|
|
{ID: uintID(2)}, // this one is already connected and not dialed.
|
|
{ID: uintID(3)},
|
|
{ID: uintID(4)},
|
|
{ID: uintID(5)},
|
|
{ID: uintID(6)}, // these are not tried because max dyn dials is 5
|
|
{ID: uintID(7)}, // ...
|
|
}},
|
|
},
|
|
new: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(3)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(4)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(5)}},
|
|
},
|
|
},
|
|
// Some of the dials complete but no new ones are launched yet because
|
|
// the sum of active dial count and dynamic peer count is == maxDynDials.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(3)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(4)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(3)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(4)}},
|
|
},
|
|
},
|
|
// No new dial tasks are launched in the this round because
|
|
// maxDynDials has been reached.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(3)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(4)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(5)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(5)}},
|
|
},
|
|
new: []task{
|
|
&waitExpireTask{Duration: 14 * time.Second},
|
|
},
|
|
},
|
|
// In this round, the peer with id 2 drops off. The query
|
|
// results from last discovery lookup are reused.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(3)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(4)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(5)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(6)}},
|
|
},
|
|
},
|
|
// More peers (3,4) drop off and dial for ID 6 completes.
|
|
// The last query result from the discovery lookup is reused
|
|
// and a new one is spawned because more candidates are needed.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(5)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(6)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(7)}},
|
|
&discoverTask{},
|
|
},
|
|
},
|
|
// Peer 7 is connected, but there still aren't enough dynamic peers
|
|
// (4 out of 5). However, a discovery is already running, so ensure
|
|
// no new is started.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(5)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(7)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(7)}},
|
|
},
|
|
},
|
|
// Finish the running node discovery with an empty set. A new lookup
|
|
// should be immediately requested.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(0)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(5)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(7)}},
|
|
},
|
|
done: []task{
|
|
&discoverTask{},
|
|
},
|
|
new: []task{
|
|
&discoverTask{},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
func TestDialStateDynDialFromTable(t *testing.T) {
|
|
// This table always returns the same random nodes
|
|
// in the order given below.
|
|
table := fakeTable{
|
|
{ID: uintID(1)},
|
|
{ID: uintID(2)},
|
|
{ID: uintID(3)},
|
|
{ID: uintID(4)},
|
|
{ID: uintID(5)},
|
|
{ID: uintID(6)},
|
|
{ID: uintID(7)},
|
|
{ID: uintID(8)},
|
|
}
|
|
|
|
runDialTest(t, dialtest{
|
|
init: newDialState(nil, table, 10),
|
|
rounds: []round{
|
|
// Discovery bootstrap is launched.
|
|
{
|
|
new: []task{&discoverTask{bootstrap: true}},
|
|
},
|
|
// 5 out of 8 of the nodes returned by ReadRandomNodes are dialed.
|
|
{
|
|
done: []task{
|
|
&discoverTask{bootstrap: true},
|
|
},
|
|
new: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(1)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(2)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(3)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(4)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(5)}},
|
|
&discoverTask{bootstrap: false},
|
|
},
|
|
},
|
|
// Dialing nodes 1,2 succeeds. Dials from the lookup are launched.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(1)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(2)}},
|
|
&discoverTask{results: []*discover.Node{
|
|
{ID: uintID(10)},
|
|
{ID: uintID(11)},
|
|
{ID: uintID(12)},
|
|
}},
|
|
},
|
|
new: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(10)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(11)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(12)}},
|
|
&discoverTask{bootstrap: false},
|
|
},
|
|
},
|
|
// Dialing nodes 3,4,5 fails. The dials from the lookup succeed.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(10)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(11)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(12)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(3)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(4)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(5)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(10)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(11)}},
|
|
&dialTask{dynDialedConn, &discover.Node{ID: uintID(12)}},
|
|
},
|
|
},
|
|
// Waiting for expiry. No waitExpireTask is launched because the
|
|
// discovery query is still running.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(10)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(11)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(12)}},
|
|
},
|
|
},
|
|
// Nodes 3,4 are not tried again because only the first two
|
|
// returned random nodes (nodes 1,2) are tried and they're
|
|
// already connected.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(10)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(11)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(12)}},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
// This test checks that static dials are launched.
|
|
func TestDialStateStaticDial(t *testing.T) {
|
|
wantStatic := []*discover.Node{
|
|
{ID: uintID(1)},
|
|
{ID: uintID(2)},
|
|
{ID: uintID(3)},
|
|
{ID: uintID(4)},
|
|
{ID: uintID(5)},
|
|
}
|
|
|
|
runDialTest(t, dialtest{
|
|
init: newDialState(wantStatic, fakeTable{}, 0),
|
|
rounds: []round{
|
|
// Static dials are launched for the nodes that
|
|
// aren't yet connected.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(3)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(4)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(5)}},
|
|
},
|
|
},
|
|
// No new tasks are launched in this round because all static
|
|
// nodes are either connected or still being dialed.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(3)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(3)}},
|
|
},
|
|
},
|
|
// No new dial tasks are launched because all static
|
|
// nodes are now connected.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(3)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(4)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(5)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(4)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(5)}},
|
|
},
|
|
new: []task{
|
|
&waitExpireTask{Duration: 14 * time.Second},
|
|
},
|
|
},
|
|
// Wait a round for dial history to expire, no new tasks should spawn.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(3)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(4)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(5)}},
|
|
},
|
|
},
|
|
// If a static node is dropped, it should be immediately redialed,
|
|
// irrespective whether it was originally static or dynamic.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(3)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(5)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(2)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(4)}},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
// This test checks that past dials are not retried for some time.
|
|
func TestDialStateCache(t *testing.T) {
|
|
wantStatic := []*discover.Node{
|
|
{ID: uintID(1)},
|
|
{ID: uintID(2)},
|
|
{ID: uintID(3)},
|
|
}
|
|
|
|
runDialTest(t, dialtest{
|
|
init: newDialState(wantStatic, fakeTable{}, 0),
|
|
rounds: []round{
|
|
// Static dials are launched for the nodes that
|
|
// aren't yet connected.
|
|
{
|
|
peers: nil,
|
|
new: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(1)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(2)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(3)}},
|
|
},
|
|
},
|
|
// No new tasks are launched in this round because all static
|
|
// nodes are either connected or still being dialed.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: staticDialedConn, id: uintID(2)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(1)}},
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(2)}},
|
|
},
|
|
},
|
|
// A salvage task is launched to wait for node 3's history
|
|
// entry to expire.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
done: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(3)}},
|
|
},
|
|
new: []task{
|
|
&waitExpireTask{Duration: 14 * time.Second},
|
|
},
|
|
},
|
|
// Still waiting for node 3's entry to expire in the cache.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
},
|
|
// The cache entry for node 3 has expired and is retried.
|
|
{
|
|
peers: []*Peer{
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(1)}},
|
|
{rw: &conn{flags: dynDialedConn, id: uintID(2)}},
|
|
},
|
|
new: []task{
|
|
&dialTask{staticDialedConn, &discover.Node{ID: uintID(3)}},
|
|
},
|
|
},
|
|
},
|
|
})
|
|
}
|
|
|
|
// compares task lists but doesn't care about the order.
|
|
func sametasks(a, b []task) bool {
|
|
if len(a) != len(b) {
|
|
return false
|
|
}
|
|
next:
|
|
for _, ta := range a {
|
|
for _, tb := range b {
|
|
if reflect.DeepEqual(ta, tb) {
|
|
continue next
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
func uintID(i uint32) discover.NodeID {
|
|
var id discover.NodeID
|
|
binary.BigEndian.PutUint32(id[:], i)
|
|
return id
|
|
}
|