159 lines
3.4 KiB
Go
159 lines
3.4 KiB
Go
package p2p
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import (
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"fmt"
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"net"
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"reflect"
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"sync"
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"testing"
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"github.com/ethereum/go-ethereum/crypto"
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)
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type peerId struct {
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pubkey []byte
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}
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func (self *peerId) String() string {
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return fmt.Sprintf("test peer %x", self.Pubkey()[:4])
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}
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func (self *peerId) Pubkey() (pubkey []byte) {
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pubkey = self.pubkey
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if len(pubkey) == 0 {
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pubkey = crypto.GenerateNewKeyPair().PublicKey
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self.pubkey = pubkey
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}
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return
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}
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func newTestPeer() (peer *Peer) {
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peer = NewPeer(&peerId{}, []Cap{})
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peer.pubkeyHook = func(*peerAddr) error { return nil }
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peer.ourID = &peerId{}
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peer.listenAddr = &peerAddr{}
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peer.otherPeers = func() []*Peer { return nil }
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return
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}
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func TestBaseProtocolPeers(t *testing.T) {
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peerList := []*peerAddr{
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{IP: net.ParseIP("1.2.3.4"), Port: 2222, Pubkey: []byte{}},
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{IP: net.ParseIP("5.6.7.8"), Port: 3333, Pubkey: []byte{}},
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}
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listenAddr := &peerAddr{IP: net.ParseIP("1.3.5.7"), Port: 1111, Pubkey: []byte{}}
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rw1, rw2 := MsgPipe()
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defer rw1.Close()
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wg := new(sync.WaitGroup)
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// run matcher, close pipe when addresses have arrived
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numPeers := len(peerList) + 1
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addrChan := make(chan *peerAddr)
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wg.Add(1)
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go func() {
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i := 0
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for got := range addrChan {
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var want *peerAddr
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switch {
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case i < len(peerList):
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want = peerList[i]
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case i == len(peerList):
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want = listenAddr // listenAddr should be the last thing sent
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}
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t.Logf("got peer %d/%d: %v", i+1, numPeers, got)
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if !reflect.DeepEqual(want, got) {
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t.Errorf("mismatch: got %+v, want %+v", got, want)
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}
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i++
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if i == numPeers {
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break
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}
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}
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if i != numPeers {
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t.Errorf("wrong number of peers received: got %d, want %d", i, numPeers)
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}
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rw1.Close()
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wg.Done()
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}()
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// run first peer (in background)
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peer1 := newTestPeer()
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peer1.ourListenAddr = listenAddr
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peer1.otherPeers = func() []*Peer {
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pl := make([]*Peer, len(peerList))
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for i, addr := range peerList {
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pl[i] = &Peer{listenAddr: addr}
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}
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return pl
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}
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wg.Add(1)
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go func() {
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runBaseProtocol(peer1, rw1)
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wg.Done()
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}()
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// run second peer
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peer2 := newTestPeer()
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peer2.newPeerAddr = addrChan // feed peer suggestions into matcher
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if err := runBaseProtocol(peer2, rw2); err != ErrPipeClosed {
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t.Errorf("peer2 terminated with unexpected error: %v", err)
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}
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// terminate matcher
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close(addrChan)
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wg.Wait()
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}
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func TestBaseProtocolDisconnect(t *testing.T) {
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peer := NewPeer(&peerId{}, nil)
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peer.ourID = &peerId{}
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peer.pubkeyHook = func(*peerAddr) error { return nil }
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rw1, rw2 := MsgPipe()
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done := make(chan struct{})
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go func() {
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if err := expectMsg(rw2, handshakeMsg); err != nil {
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t.Error(err)
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}
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err := EncodeMsg(rw2, handshakeMsg,
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baseProtocolVersion,
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"",
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[]interface{}{},
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0,
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make([]byte, 64),
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)
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if err != nil {
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t.Error(err)
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}
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if err := expectMsg(rw2, getPeersMsg); err != nil {
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t.Error(err)
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}
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if err := EncodeMsg(rw2, discMsg, DiscQuitting); err != nil {
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t.Error(err)
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}
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close(done)
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}()
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if err := runBaseProtocol(peer, rw1); err == nil {
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t.Errorf("base protocol returned without error")
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} else if reason, ok := err.(discRequestedError); !ok || reason != DiscQuitting {
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t.Errorf("base protocol returned wrong error: %v", err)
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}
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<-done
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}
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func expectMsg(r MsgReader, code uint64) error {
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msg, err := r.ReadMsg()
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if err != nil {
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return err
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}
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if err := msg.Discard(); err != nil {
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return err
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}
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if msg.Code != code {
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return fmt.Errorf("wrong message code: got %d, expected %d", msg.Code, code)
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}
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return nil
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}
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