Merge pull request #3709 from fjl/p2p-context-log
p2p, p2p/discover, p2p/nat: rework logging using context keys
This commit is contained in:
Péter Szilágyi
GitHub
commit
965407f238
@ -280,7 +280,7 @@ func (p *peer) readStatus(network int, status *statusData, genesis common.Hash)
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return errResp(ErrDecode, "msg %v: %v", msg, err)
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}
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if status.GenesisBlock != genesis {
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return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", status.GenesisBlock, genesis)
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return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", status.GenesisBlock[:8], genesis[:8])
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}
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if int(status.NetworkId) != network {
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return errResp(ErrNetworkIdMismatch, "%d (!= %d)", status.NetworkId, network)
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@ -63,7 +63,7 @@ func testStatusMsgErrors(t *testing.T, protocol int) {
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},
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{
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code: StatusMsg, data: statusData{uint32(protocol), NetworkId, td, currentBlock, common.Hash{3}},
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wantError: errResp(ErrGenesisBlockMismatch, "0300000000000000000000000000000000000000000000000000000000000000 (!= %x)", genesis),
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wantError: errResp(ErrGenesisBlockMismatch, "0300000000000000 (!= %x)", genesis[:8]),
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},
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}
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@ -367,7 +367,7 @@ func (p *peer) Handshake(td *big.Int, head common.Hash, headNum uint64, genesis
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}
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if rGenesis != genesis {
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return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", rGenesis, genesis)
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return errResp(ErrGenesisBlockMismatch, "%x (!= %x)", rGenesis[:8], genesis[:8])
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}
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if int(rNetwork) != p.network {
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return errResp(ErrNetworkIdMismatch, "%d (!= %d)", rNetwork, p.network)
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13
p2p/dial.go
13
p2p/dial.go
@ -133,7 +133,7 @@ func (s *dialstate) newTasks(nRunning int, peers map[discover.NodeID]*Peer, now
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var newtasks []task
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addDial := func(flag connFlag, n *discover.Node) bool {
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if err := s.checkDial(n, peers); err != nil {
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log.Debug(fmt.Sprintf("skipping dial candidate %x@%v:%d: %v", n.ID[:8], n.IP, n.TCP, err))
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log.Trace("Skipping dial candidate", "id", n.ID, "addr", &net.TCPAddr{IP: n.IP, Port: int(n.TCP)}, "err", err)
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return false
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}
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s.dialing[n.ID] = flag
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@ -162,7 +162,7 @@ func (s *dialstate) newTasks(nRunning int, peers map[discover.NodeID]*Peer, now
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err := s.checkDial(t.dest, peers)
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switch err {
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case errNotWhitelisted, errSelf:
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log.Debug(fmt.Sprintf("removing static dial candidate %x@%v:%d: %v", t.dest.ID[:8], t.dest.IP, t.dest.TCP, err))
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log.Warn("Removing static dial candidate", "id", t.dest.ID, "addr", &net.TCPAddr{IP: t.dest.IP, Port: int(t.dest.TCP)}, "err", err)
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delete(s.static, t.dest.ID)
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case nil:
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s.dialing[id] = t.flags
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@ -266,7 +266,7 @@ func (t *dialTask) Do(srv *Server) {
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// The backoff delay resets when the node is found.
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func (t *dialTask) resolve(srv *Server) bool {
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if srv.ntab == nil {
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log.Debug(fmt.Sprintf("can't resolve node %x: discovery is disabled", t.dest.ID[:6]))
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log.Debug("Can't resolve node", "id", t.dest.ID, "err", "discovery is disabled")
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return false
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}
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if t.resolveDelay == 0 {
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@ -282,23 +282,22 @@ func (t *dialTask) resolve(srv *Server) bool {
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if t.resolveDelay > maxResolveDelay {
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t.resolveDelay = maxResolveDelay
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}
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log.Debug(fmt.Sprintf("resolving node %x failed (new delay: %v)", t.dest.ID[:6], t.resolveDelay))
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log.Debug("Resolving node failed", "id", t.dest.ID, "newdelay", t.resolveDelay)
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return false
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}
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// The node was found.
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t.resolveDelay = initialResolveDelay
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t.dest = resolved
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log.Debug(fmt.Sprintf("resolved node %x: %v:%d", t.dest.ID[:6], t.dest.IP, t.dest.TCP))
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log.Debug("Resolved node", "id", t.dest.ID, "addr", &net.TCPAddr{IP: t.dest.IP, Port: int(t.dest.TCP)})
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return true
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}
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// dial performs the actual connection attempt.
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func (t *dialTask) dial(srv *Server, dest *discover.Node) bool {
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addr := &net.TCPAddr{IP: dest.IP, Port: int(dest.TCP)}
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log.Debug(fmt.Sprintf("dial tcp %v (%x)", addr, dest.ID[:6]))
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fd, err := srv.Dialer.Dial("tcp", addr.String())
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if err != nil {
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log.Trace(fmt.Sprintf("%v", err))
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log.Trace("Dial error", "task", t, "err", err)
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return false
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}
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mfd := newMeteredConn(fd, false)
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@ -23,7 +23,6 @@ import (
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"bytes"
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"crypto/rand"
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"encoding/binary"
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"fmt"
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"os"
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"sync"
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"time"
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@ -180,12 +179,11 @@ func (db *nodeDB) storeInt64(key []byte, n int64) error {
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func (db *nodeDB) node(id NodeID) *Node {
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blob, err := db.lvl.Get(makeKey(id, nodeDBDiscoverRoot), nil)
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if err != nil {
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log.Trace(fmt.Sprintf("failed to retrieve node %v: %v", id, err))
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return nil
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}
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node := new(Node)
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if err := rlp.DecodeBytes(blob, node); err != nil {
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log.Warn(fmt.Sprintf("failed to decode node RLP: %v", err))
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log.Error("Failed to decode node RLP", "err", err)
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return nil
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}
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node.sha = crypto.Keccak256Hash(node.ID[:])
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@ -233,7 +231,7 @@ func (db *nodeDB) expirer() {
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select {
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case <-tick:
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if err := db.expireNodes(); err != nil {
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log.Error(fmt.Sprintf("Failed to expire nodedb items: %v", err))
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log.Error("Failed to expire nodedb items", "err", err)
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}
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case <-db.quit:
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@ -352,7 +350,7 @@ func nextNode(it iterator.Iterator) *Node {
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}
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var n Node
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if err := rlp.DecodeBytes(it.Value(), &n); err != nil {
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log.Warn(fmt.Sprintf("invalid node %x: %v", id, err))
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log.Warn("Failed to decode node RLP", "id", id, "err", err)
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continue
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}
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return &n
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@ -221,6 +221,11 @@ func (n NodeID) GoString() string {
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return fmt.Sprintf("discover.HexID(\"%x\")", n[:])
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}
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// TerminalString returns a shortened hex string for terminal logging.
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func (n NodeID) TerminalString() string {
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return hex.EncodeToString(n[:8])
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}
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// HexID converts a hex string to a NodeID.
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// The string may be prefixed with 0x.
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func HexID(in string) (NodeID, error) {
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@ -23,7 +23,6 @@ import (
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"fmt"
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"net"
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"sort"
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"strings"
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"time"
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"github.com/ethereum/go-ethereum/log"
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@ -50,16 +49,10 @@ func checkClockDrift() {
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return
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}
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if drift < -driftThreshold || drift > driftThreshold {
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warning := fmt.Sprintf("System clock seems off by %v, which can prevent network connectivity", drift)
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howtofix := fmt.Sprintf("Please enable network time synchronisation in system settings")
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separator := strings.Repeat("-", len(warning))
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log.Warn(fmt.Sprint(separator))
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log.Warn(fmt.Sprint(warning))
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log.Warn(fmt.Sprint(howtofix))
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log.Warn(fmt.Sprint(separator))
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log.Warn(fmt.Sprintf("System clock seems off by %v, which can prevent network connectivity", drift))
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log.Warn("Please enable network time synchronisation in system settings.")
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} else {
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log.Debug(fmt.Sprintf("Sanity NTP check reported %v drift, all ok", drift))
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log.Debug("NTP sanity check done", "drift", drift)
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}
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}
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@ -277,10 +277,10 @@ func (tab *Table) lookup(targetID NodeID, refreshIfEmpty bool) []*Node {
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// Bump the failure counter to detect and evacuate non-bonded entries
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fails := tab.db.findFails(n.ID) + 1
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tab.db.updateFindFails(n.ID, fails)
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log.Trace(fmt.Sprintf("Bumping failures for %x: %d", n.ID[:8], fails))
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log.Trace("Bumping findnode failure counter", "id", n.ID, "failcount", fails)
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if fails >= maxFindnodeFailures {
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log.Trace(fmt.Sprintf("Evacuating node %x: %d findnode failures", n.ID[:8], fails))
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log.Trace("Too many findnode failures, dropping", "id", n.ID, "failcount", fails)
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tab.delete(n)
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}
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}
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@ -385,13 +385,11 @@ func (tab *Table) doRefresh(done chan struct{}) {
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seeds = tab.bondall(append(seeds, tab.nursery...))
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if len(seeds) == 0 {
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log.Debug(fmt.Sprintf("no seed nodes found"))
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log.Debug("No discv4 seed nodes found")
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}
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for _, n := range seeds {
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log.Debug("", "msg", log.Lazy{Fn: func() string {
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age := time.Since(tab.db.lastPong(n.ID))
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return fmt.Sprintf("seed node (age %v): %v", age, n)
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}})
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age := log.Lazy{Fn: func() time.Duration { return time.Since(tab.db.lastPong(n.ID)) }}
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log.Trace("Found seed node in database", "id", n.ID, "addr", n.addr(), "age", age)
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}
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tab.mutex.Lock()
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tab.stuff(seeds)
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@ -470,7 +468,7 @@ func (tab *Table) bond(pinged bool, id NodeID, addr *net.UDPAddr, tcpPort uint16
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var result error
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age := time.Since(tab.db.lastPong(id))
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if node == nil || fails > 0 || age > nodeDBNodeExpiration {
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log.Trace(fmt.Sprintf("Bonding %x: known=%t, fails=%d age=%v", id[:8], node != nil, fails, age))
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log.Trace("Starting bonding ping/pong", "id", id, "known", node != nil, "failcount", fails, "age", age)
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tab.bondmu.Lock()
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w := tab.bonding[id]
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@ -147,6 +147,7 @@ func nodeToRPC(n *Node) rpcNode {
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type packet interface {
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handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) error
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name() string
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}
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type conn interface {
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@ -223,7 +224,7 @@ func ListenUDP(priv *ecdsa.PrivateKey, laddr string, natm nat.Interface, nodeDBP
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if err != nil {
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return nil, err
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}
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log.Info(fmt.Sprint("Listening,", tab.self))
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log.Debug("UDP listener up", "self", tab.self)
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return tab, nil
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}
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@ -269,7 +270,7 @@ func (t *udp) close() {
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func (t *udp) ping(toid NodeID, toaddr *net.UDPAddr) error {
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// TODO: maybe check for ReplyTo field in callback to measure RTT
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errc := t.pending(toid, pongPacket, func(interface{}) bool { return true })
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t.send(toaddr, pingPacket, ping{
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t.send(toaddr, pingPacket, &ping{
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Version: Version,
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From: t.ourEndpoint,
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To: makeEndpoint(toaddr, 0), // TODO: maybe use known TCP port from DB
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@ -293,14 +294,14 @@ func (t *udp) findnode(toid NodeID, toaddr *net.UDPAddr, target NodeID) ([]*Node
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nreceived++
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n, err := t.nodeFromRPC(toaddr, rn)
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if err != nil {
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log.Trace(fmt.Sprintf("invalid neighbor node (%v) from %v: %v", rn.IP, toaddr, err))
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log.Trace("Invalid neighbor node received", "ip", rn.IP, "addr", toaddr, "err", err)
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continue
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}
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nodes = append(nodes, n)
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}
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return nreceived >= bucketSize
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})
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t.send(toaddr, findnodePacket, findnode{
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t.send(toaddr, findnodePacket, &findnode{
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Target: target,
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Expiration: uint64(time.Now().Add(expiration).Unix()),
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})
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@ -458,15 +459,13 @@ func init() {
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}
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}
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func (t *udp) send(toaddr *net.UDPAddr, ptype byte, req interface{}) error {
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func (t *udp) send(toaddr *net.UDPAddr, ptype byte, req packet) error {
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packet, err := encodePacket(t.priv, ptype, req)
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if err != nil {
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return err
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}
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log.Trace(fmt.Sprintf(">>> %v %T", toaddr, req))
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if _, err = t.conn.WriteToUDP(packet, toaddr); err != nil {
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log.Trace(fmt.Sprint("UDP send failed:", err))
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}
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_, err = t.conn.WriteToUDP(packet, toaddr)
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log.Trace(">> "+req.name(), "addr", toaddr, "err", err)
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return err
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}
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@ -475,13 +474,13 @@ func encodePacket(priv *ecdsa.PrivateKey, ptype byte, req interface{}) ([]byte,
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b.Write(headSpace)
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b.WriteByte(ptype)
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if err := rlp.Encode(b, req); err != nil {
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log.Error(fmt.Sprint("error encoding packet:", err))
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log.Error("Can't encode discv4 packet", "err", err)
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return nil, err
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}
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packet := b.Bytes()
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sig, err := crypto.Sign(crypto.Keccak256(packet[headSize:]), priv)
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if err != nil {
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log.Error(fmt.Sprint("could not sign packet:", err))
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log.Error("Can't sign discv4 packet", "err", err)
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return nil, err
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}
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copy(packet[macSize:], sig)
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@ -503,11 +502,11 @@ func (t *udp) readLoop() {
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nbytes, from, err := t.conn.ReadFromUDP(buf)
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if netutil.IsTemporaryError(err) {
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// Ignore temporary read errors.
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log.Debug(fmt.Sprintf("Temporary read error: %v", err))
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log.Debug("Temporary UDP read error", "err", err)
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continue
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} else if err != nil {
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// Shut down the loop for permament errors.
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log.Debug(fmt.Sprintf("Read error: %v", err))
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log.Debug("UDP read error", "err", err)
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return
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}
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t.handlePacket(from, buf[:nbytes])
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@ -517,14 +516,11 @@ func (t *udp) readLoop() {
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func (t *udp) handlePacket(from *net.UDPAddr, buf []byte) error {
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packet, fromID, hash, err := decodePacket(buf)
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if err != nil {
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log.Debug(fmt.Sprintf("Bad packet from %v: %v", from, err))
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log.Debug("Bad discv4 packet", "addr", from, "err", err)
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return err
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}
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status := "ok"
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if err = packet.handle(t, from, fromID, hash); err != nil {
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status = err.Error()
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}
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log.Trace(fmt.Sprintf("<<< %v %T: %s", from, packet, status))
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err = packet.handle(t, from, fromID, hash)
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log.Trace("<< "+packet.name(), "addr", from, "err", err)
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return err
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}
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@ -563,7 +559,7 @@ func (req *ping) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) er
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if expired(req.Expiration) {
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return errExpired
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}
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t.send(from, pongPacket, pong{
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t.send(from, pongPacket, &pong{
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To: makeEndpoint(from, req.From.TCP),
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ReplyTok: mac,
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Expiration: uint64(time.Now().Add(expiration).Unix()),
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@ -575,6 +571,8 @@ func (req *ping) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) er
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return nil
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}
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func (req *ping) name() string { return "PING/v4" }
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func (req *pong) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) error {
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if expired(req.Expiration) {
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return errExpired
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@ -585,6 +583,8 @@ func (req *pong) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) er
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return nil
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}
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func (req *pong) name() string { return "PONG/v4" }
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func (req *findnode) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) error {
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if expired(req.Expiration) {
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return errExpired
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@ -613,13 +613,15 @@ func (req *findnode) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte
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}
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p.Nodes = append(p.Nodes, nodeToRPC(n))
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if len(p.Nodes) == maxNeighbors || i == len(closest)-1 {
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t.send(from, neighborsPacket, p)
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t.send(from, neighborsPacket, &p)
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p.Nodes = p.Nodes[:0]
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}
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}
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return nil
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}
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func (req *findnode) name() string { return "FINDNODE/v4" }
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func (req *neighbors) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte) error {
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if expired(req.Expiration) {
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return errExpired
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@ -630,6 +632,8 @@ func (req *neighbors) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byt
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return nil
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}
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func (req *neighbors) name() string { return "NEIGHBORS/v4" }
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func expired(ts uint64) bool {
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return time.Unix(int64(ts), 0).Before(time.Now())
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}
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@ -98,16 +98,17 @@ const (
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// Map adds a port mapping on m and keeps it alive until c is closed.
|
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// This function is typically invoked in its own goroutine.
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func Map(m Interface, c chan struct{}, protocol string, extport, intport int, name string) {
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log := log.New("proto", protocol, "extport", extport, "intport", intport, "interface", m)
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refresh := time.NewTimer(mapUpdateInterval)
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defer func() {
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refresh.Stop()
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log.Debug(fmt.Sprintf("deleting port mapping: %s %d -> %d (%s) using %s", protocol, extport, intport, name, m))
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log.Debug("Deleting port mapping")
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m.DeleteMapping(protocol, extport, intport)
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}()
|
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if err := m.AddMapping(protocol, extport, intport, name, mapTimeout); err != nil {
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log.Debug(fmt.Sprintf("network port %s:%d could not be mapped: %v", protocol, intport, err))
|
||||
log.Debug("Couldn't add port mapping", "err", err)
|
||||
} else {
|
||||
log.Info(fmt.Sprintf("mapped network port %s:%d -> %d (%s) using %s", protocol, extport, intport, name, m))
|
||||
log.Info("Mapped network port")
|
||||
}
|
||||
for {
|
||||
select {
|
||||
@ -116,9 +117,9 @@ func Map(m Interface, c chan struct{}, protocol string, extport, intport int, na
|
||||
return
|
||||
}
|
||||
case <-refresh.C:
|
||||
log.Trace(fmt.Sprintf("refresh port mapping %s:%d -> %d (%s) using %s", protocol, extport, intport, name, m))
|
||||
log.Trace("Refreshing port mapping")
|
||||
if err := m.AddMapping(protocol, extport, intport, name, mapTimeout); err != nil {
|
||||
log.Debug(fmt.Sprintf("network port %s:%d could not be mapped: %v", protocol, intport, err))
|
||||
log.Debug("Couldn't add port mapping", "err", err)
|
||||
}
|
||||
refresh.Reset(mapUpdateInterval)
|
||||
}
|
||||
|
||||
43
p2p/peer.go
43
p2p/peer.go
@ -17,7 +17,6 @@
|
||||
package p2p
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
@ -25,6 +24,7 @@ import (
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/ethereum/go-ethereum/common/mclock"
|
||||
"github.com/ethereum/go-ethereum/log"
|
||||
"github.com/ethereum/go-ethereum/p2p/discover"
|
||||
"github.com/ethereum/go-ethereum/rlp"
|
||||
@ -64,6 +64,8 @@ type protoHandshake struct {
|
||||
type Peer struct {
|
||||
rw *conn
|
||||
running map[string]*protoRW
|
||||
log log.Logger
|
||||
created mclock.AbsTime
|
||||
|
||||
wg sync.WaitGroup
|
||||
protoErr chan error
|
||||
@ -125,20 +127,25 @@ func newPeer(conn *conn, protocols []Protocol) *Peer {
|
||||
p := &Peer{
|
||||
rw: conn,
|
||||
running: protomap,
|
||||
created: mclock.Now(),
|
||||
disc: make(chan DiscReason),
|
||||
protoErr: make(chan error, len(protomap)+1), // protocols + pingLoop
|
||||
closed: make(chan struct{}),
|
||||
log: log.New("id", conn.id, "conn", conn.flags),
|
||||
}
|
||||
return p
|
||||
}
|
||||
|
||||
func (p *Peer) run() DiscReason {
|
||||
func (p *Peer) Log() log.Logger {
|
||||
return p.log
|
||||
}
|
||||
|
||||
func (p *Peer) run() (remoteRequested bool, err error) {
|
||||
var (
|
||||
writeStart = make(chan struct{}, 1)
|
||||
writeErr = make(chan error, 1)
|
||||
readErr = make(chan error, 1)
|
||||
reason DiscReason
|
||||
requested bool
|
||||
reason DiscReason // sent to the peer
|
||||
)
|
||||
p.wg.Add(2)
|
||||
go p.readLoop(readErr)
|
||||
@ -152,31 +159,26 @@ func (p *Peer) run() DiscReason {
|
||||
loop:
|
||||
for {
|
||||
select {
|
||||
case err := <-writeErr:
|
||||
case err = <-writeErr:
|
||||
// A write finished. Allow the next write to start if
|
||||
// there was no error.
|
||||
if err != nil {
|
||||
log.Trace(fmt.Sprintf("%v: write error: %v", p, err))
|
||||
reason = DiscNetworkError
|
||||
break loop
|
||||
}
|
||||
writeStart <- struct{}{}
|
||||
case err := <-readErr:
|
||||
case err = <-readErr:
|
||||
if r, ok := err.(DiscReason); ok {
|
||||
log.Debug(fmt.Sprintf("%v: remote requested disconnect: %v", p, r))
|
||||
requested = true
|
||||
remoteRequested = true
|
||||
reason = r
|
||||
} else {
|
||||
log.Trace(fmt.Sprintf("%v: read error: %v", p, err))
|
||||
reason = DiscNetworkError
|
||||
}
|
||||
break loop
|
||||
case err := <-p.protoErr:
|
||||
case err = <-p.protoErr:
|
||||
reason = discReasonForError(err)
|
||||
log.Debug(fmt.Sprintf("%v: protocol error: %v (%v)", p, err, reason))
|
||||
break loop
|
||||
case reason = <-p.disc:
|
||||
log.Debug(fmt.Sprintf("%v: locally requested disconnect: %v", p, reason))
|
||||
case err = <-p.disc:
|
||||
break loop
|
||||
}
|
||||
}
|
||||
@ -184,10 +186,7 @@ loop:
|
||||
close(p.closed)
|
||||
p.rw.close(reason)
|
||||
p.wg.Wait()
|
||||
if requested {
|
||||
reason = DiscRequested
|
||||
}
|
||||
return reason
|
||||
return remoteRequested, err
|
||||
}
|
||||
|
||||
func (p *Peer) pingLoop() {
|
||||
@ -297,14 +296,14 @@ func (p *Peer) startProtocols(writeStart <-chan struct{}, writeErr chan<- error)
|
||||
proto.closed = p.closed
|
||||
proto.wstart = writeStart
|
||||
proto.werr = writeErr
|
||||
log.Trace(fmt.Sprintf("%v: Starting protocol %s/%d", p, proto.Name, proto.Version))
|
||||
p.log.Trace(fmt.Sprintf("Starting protocol %s/%d", proto.Name, proto.Version))
|
||||
go func() {
|
||||
err := proto.Run(p, proto)
|
||||
if err == nil {
|
||||
log.Trace(fmt.Sprintf("%v: Protocol %s/%d returned", p, proto.Name, proto.Version))
|
||||
err = errors.New("protocol returned")
|
||||
p.log.Trace(fmt.Sprintf("Protocol %s/%d returned", proto.Name, proto.Version))
|
||||
err = errProtocolReturned
|
||||
} else if err != io.EOF {
|
||||
log.Trace(fmt.Sprintf("%v: Protocol %s/%d error: %v", p, proto.Name, proto.Version, err))
|
||||
p.log.Trace(fmt.Sprintf("Protocol %s/%d failed", proto.Name, proto.Version), "err", err)
|
||||
}
|
||||
p.protoErr <- err
|
||||
p.wg.Done()
|
||||
|
||||
@ -17,6 +17,7 @@
|
||||
package p2p
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
@ -51,6 +52,8 @@ func (self *peerError) Error() string {
|
||||
return self.message
|
||||
}
|
||||
|
||||
var errProtocolReturned = errors.New("protocol returned")
|
||||
|
||||
type DiscReason uint
|
||||
|
||||
const (
|
||||
@ -70,24 +73,24 @@ const (
|
||||
)
|
||||
|
||||
var discReasonToString = [...]string{
|
||||
DiscRequested: "Disconnect requested",
|
||||
DiscNetworkError: "Network error",
|
||||
DiscProtocolError: "Breach of protocol",
|
||||
DiscUselessPeer: "Useless peer",
|
||||
DiscTooManyPeers: "Too many peers",
|
||||
DiscAlreadyConnected: "Already connected",
|
||||
DiscIncompatibleVersion: "Incompatible P2P protocol version",
|
||||
DiscInvalidIdentity: "Invalid node identity",
|
||||
DiscQuitting: "Client quitting",
|
||||
DiscUnexpectedIdentity: "Unexpected identity",
|
||||
DiscSelf: "Connected to self",
|
||||
DiscReadTimeout: "Read timeout",
|
||||
DiscSubprotocolError: "Subprotocol error",
|
||||
DiscRequested: "disconnect requested",
|
||||
DiscNetworkError: "network error",
|
||||
DiscProtocolError: "breach of protocol",
|
||||
DiscUselessPeer: "useless peer",
|
||||
DiscTooManyPeers: "too many peers",
|
||||
DiscAlreadyConnected: "already connected",
|
||||
DiscIncompatibleVersion: "incompatible p2p protocol version",
|
||||
DiscInvalidIdentity: "invalid node identity",
|
||||
DiscQuitting: "client quitting",
|
||||
DiscUnexpectedIdentity: "unexpected identity",
|
||||
DiscSelf: "connected to self",
|
||||
DiscReadTimeout: "read timeout",
|
||||
DiscSubprotocolError: "subprotocol error",
|
||||
}
|
||||
|
||||
func (d DiscReason) String() string {
|
||||
if len(discReasonToString) < int(d) {
|
||||
return fmt.Sprintf("Unknown Reason(%d)", d)
|
||||
return fmt.Sprintf("unknown disconnect reason %d", d)
|
||||
}
|
||||
return discReasonToString[d]
|
||||
}
|
||||
@ -100,6 +103,9 @@ func discReasonForError(err error) DiscReason {
|
||||
if reason, ok := err.(DiscReason); ok {
|
||||
return reason
|
||||
}
|
||||
if err == errProtocolReturned {
|
||||
return DiscQuitting
|
||||
}
|
||||
peerError, ok := err.(*peerError)
|
||||
if ok {
|
||||
switch peerError.code {
|
||||
|
||||
@ -43,7 +43,7 @@ var discard = Protocol{
|
||||
},
|
||||
}
|
||||
|
||||
func testPeer(protos []Protocol) (func(), *conn, *Peer, <-chan DiscReason) {
|
||||
func testPeer(protos []Protocol) (func(), *conn, *Peer, <-chan error) {
|
||||
fd1, fd2 := net.Pipe()
|
||||
c1 := &conn{fd: fd1, transport: newTestTransport(randomID(), fd1)}
|
||||
c2 := &conn{fd: fd2, transport: newTestTransport(randomID(), fd2)}
|
||||
@ -53,15 +53,17 @@ func testPeer(protos []Protocol) (func(), *conn, *Peer, <-chan DiscReason) {
|
||||
}
|
||||
|
||||
peer := newPeer(c1, protos)
|
||||
errc := make(chan DiscReason, 1)
|
||||
go func() { errc <- peer.run() }()
|
||||
errc := make(chan error, 1)
|
||||
go func() {
|
||||
_, err := peer.run()
|
||||
errc <- err
|
||||
}()
|
||||
|
||||
closer := func() { c2.close(errors.New("close func called")) }
|
||||
return closer, c2, peer, errc
|
||||
}
|
||||
|
||||
func TestPeerProtoReadMsg(t *testing.T) {
|
||||
done := make(chan struct{})
|
||||
proto := Protocol{
|
||||
Name: "a",
|
||||
Length: 5,
|
||||
@ -75,7 +77,6 @@ func TestPeerProtoReadMsg(t *testing.T) {
|
||||
if err := ExpectMsg(rw, 4, []uint{3}); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
close(done)
|
||||
return nil
|
||||
},
|
||||
}
|
||||
@ -88,9 +89,10 @@ func TestPeerProtoReadMsg(t *testing.T) {
|
||||
Send(rw, baseProtocolLength+4, []uint{3})
|
||||
|
||||
select {
|
||||
case <-done:
|
||||
case err := <-errc:
|
||||
t.Errorf("peer returned: %v", err)
|
||||
if err != errProtocolReturned {
|
||||
t.Errorf("peer returned error: %v", err)
|
||||
}
|
||||
case <-time.After(2 * time.Second):
|
||||
t.Errorf("receive timeout")
|
||||
}
|
||||
@ -137,8 +139,8 @@ func TestPeerDisconnect(t *testing.T) {
|
||||
}
|
||||
select {
|
||||
case reason := <-disc:
|
||||
if reason != DiscRequested {
|
||||
t.Errorf("run returned wrong reason: got %v, want %v", reason, DiscRequested)
|
||||
if reason != DiscQuitting {
|
||||
t.Errorf("run returned wrong reason: got %v, want %v", reason, DiscQuitting)
|
||||
}
|
||||
case <-time.After(500 * time.Millisecond):
|
||||
t.Error("peer did not return")
|
||||
|
||||
115
p2p/server.go
115
p2p/server.go
@ -25,6 +25,8 @@ import (
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
"github.com/ethereum/go-ethereum/common/mclock"
|
||||
"github.com/ethereum/go-ethereum/log"
|
||||
"github.com/ethereum/go-ethereum/p2p/discover"
|
||||
"github.com/ethereum/go-ethereum/p2p/discv5"
|
||||
@ -162,12 +164,18 @@ type Server struct {
|
||||
removestatic chan *discover.Node
|
||||
posthandshake chan *conn
|
||||
addpeer chan *conn
|
||||
delpeer chan *Peer
|
||||
delpeer chan peerDrop
|
||||
loopWG sync.WaitGroup // loop, listenLoop
|
||||
}
|
||||
|
||||
type peerOpFunc func(map[discover.NodeID]*Peer)
|
||||
|
||||
type peerDrop struct {
|
||||
*Peer
|
||||
err error
|
||||
requested bool // true if signaled by the peer
|
||||
}
|
||||
|
||||
type connFlag int
|
||||
|
||||
const (
|
||||
@ -204,9 +212,9 @@ type transport interface {
|
||||
}
|
||||
|
||||
func (c *conn) String() string {
|
||||
s := c.flags.String() + " conn"
|
||||
s := c.flags.String()
|
||||
if (c.id != discover.NodeID{}) {
|
||||
s += fmt.Sprintf(" %x", c.id[:8])
|
||||
s += " " + c.id.String()
|
||||
}
|
||||
s += " " + c.fd.RemoteAddr().String()
|
||||
return s
|
||||
@ -215,16 +223,16 @@ func (c *conn) String() string {
|
||||
func (f connFlag) String() string {
|
||||
s := ""
|
||||
if f&trustedConn != 0 {
|
||||
s += " trusted"
|
||||
s += "-trusted"
|
||||
}
|
||||
if f&dynDialedConn != 0 {
|
||||
s += " dyn dial"
|
||||
s += "-dyndial"
|
||||
}
|
||||
if f&staticDialedConn != 0 {
|
||||
s += " static dial"
|
||||
s += "-staticdial"
|
||||
}
|
||||
if f&inboundConn != 0 {
|
||||
s += " inbound"
|
||||
s += "-inbound"
|
||||
}
|
||||
if s != "" {
|
||||
s = s[1:]
|
||||
@ -288,26 +296,30 @@ func (srv *Server) Self() *discover.Node {
|
||||
srv.lock.Lock()
|
||||
defer srv.lock.Unlock()
|
||||
|
||||
// If the server's not running, return an empty node
|
||||
if !srv.running {
|
||||
return &discover.Node{IP: net.ParseIP("0.0.0.0")}
|
||||
}
|
||||
// If the node is running but discovery is off, manually assemble the node infos
|
||||
if srv.ntab == nil {
|
||||
// Inbound connections disabled, use zero address
|
||||
if srv.listener == nil {
|
||||
return srv.makeSelf(srv.listener, srv.ntab)
|
||||
}
|
||||
|
||||
func (srv *Server) makeSelf(listener net.Listener, ntab discoverTable) *discover.Node {
|
||||
// If the server's not running, return an empty node.
|
||||
// If the node is running but discovery is off, manually assemble the node infos.
|
||||
if ntab == nil {
|
||||
// Inbound connections disabled, use zero address.
|
||||
if listener == nil {
|
||||
return &discover.Node{IP: net.ParseIP("0.0.0.0"), ID: discover.PubkeyID(&srv.PrivateKey.PublicKey)}
|
||||
}
|
||||
// Otherwise inject the listener address too
|
||||
addr := srv.listener.Addr().(*net.TCPAddr)
|
||||
addr := listener.Addr().(*net.TCPAddr)
|
||||
return &discover.Node{
|
||||
ID: discover.PubkeyID(&srv.PrivateKey.PublicKey),
|
||||
IP: addr.IP,
|
||||
TCP: uint16(addr.Port),
|
||||
}
|
||||
}
|
||||
// Otherwise return the live node infos
|
||||
return srv.ntab.Self()
|
||||
// Otherwise return the discovery node.
|
||||
return ntab.Self()
|
||||
}
|
||||
|
||||
// Stop terminates the server and all active peer connections.
|
||||
@ -336,7 +348,7 @@ func (srv *Server) Start() (err error) {
|
||||
return errors.New("server already running")
|
||||
}
|
||||
srv.running = true
|
||||
log.Info(fmt.Sprint("Starting Server"))
|
||||
log.Info("Starting P2P networking")
|
||||
|
||||
// static fields
|
||||
if srv.PrivateKey == nil {
|
||||
@ -350,7 +362,7 @@ func (srv *Server) Start() (err error) {
|
||||
}
|
||||
srv.quit = make(chan struct{})
|
||||
srv.addpeer = make(chan *conn)
|
||||
srv.delpeer = make(chan *Peer)
|
||||
srv.delpeer = make(chan peerDrop)
|
||||
srv.posthandshake = make(chan *conn)
|
||||
srv.addstatic = make(chan *discover.Node)
|
||||
srv.removestatic = make(chan *discover.Node)
|
||||
@ -398,7 +410,7 @@ func (srv *Server) Start() (err error) {
|
||||
}
|
||||
}
|
||||
if srv.NoDial && srv.ListenAddr == "" {
|
||||
log.Warn(fmt.Sprint("I will be kind-of useless, neither dialing nor listening."))
|
||||
log.Warn("P2P server will be useless, neither dialing nor listening")
|
||||
}
|
||||
|
||||
srv.loopWG.Add(1)
|
||||
@ -466,7 +478,7 @@ func (srv *Server) run(dialstate dialer) {
|
||||
i := 0
|
||||
for ; len(runningTasks) < maxActiveDialTasks && i < len(ts); i++ {
|
||||
t := ts[i]
|
||||
log.Trace(fmt.Sprint("new task:", t))
|
||||
log.Trace("New dial task", "task", t)
|
||||
go func() { t.Do(srv); taskdone <- t }()
|
||||
runningTasks = append(runningTasks, t)
|
||||
}
|
||||
@ -489,19 +501,18 @@ running:
|
||||
select {
|
||||
case <-srv.quit:
|
||||
// The server was stopped. Run the cleanup logic.
|
||||
log.Trace(fmt.Sprint("<-quit: spinning down"))
|
||||
break running
|
||||
case n := <-srv.addstatic:
|
||||
// This channel is used by AddPeer to add to the
|
||||
// ephemeral static peer list. Add it to the dialer,
|
||||
// it will keep the node connected.
|
||||
log.Trace(fmt.Sprint("<-addstatic:", n))
|
||||
log.Debug("Adding static node", "node", n)
|
||||
dialstate.addStatic(n)
|
||||
case n := <-srv.removestatic:
|
||||
// This channel is used by RemovePeer to send a
|
||||
// disconnect request to a peer and begin the
|
||||
// stop keeping the node connected
|
||||
log.Trace(fmt.Sprint("<-removestatic:", n))
|
||||
log.Debug("Removing static node", "node", n)
|
||||
dialstate.removeStatic(n)
|
||||
if p, ok := peers[n.ID]; ok {
|
||||
p.Disconnect(DiscRequested)
|
||||
@ -514,7 +525,7 @@ running:
|
||||
// A task got done. Tell dialstate about it so it
|
||||
// can update its state and remove it from the active
|
||||
// tasks list.
|
||||
log.Trace(fmt.Sprint("<-taskdone:", t))
|
||||
log.Trace("Dial task done", "task", t)
|
||||
dialstate.taskDone(t, time.Now())
|
||||
delTask(t)
|
||||
case c := <-srv.posthandshake:
|
||||
@ -524,19 +535,17 @@ running:
|
||||
// Ensure that the trusted flag is set before checking against MaxPeers.
|
||||
c.flags |= trustedConn
|
||||
}
|
||||
log.Trace(fmt.Sprint("<-posthandshake:", c))
|
||||
// TODO: track in-progress inbound node IDs (pre-Peer) to avoid dialing them.
|
||||
c.cont <- srv.encHandshakeChecks(peers, c)
|
||||
case c := <-srv.addpeer:
|
||||
// At this point the connection is past the protocol handshake.
|
||||
// Its capabilities are known and the remote identity is verified.
|
||||
log.Trace(fmt.Sprint("<-addpeer:", c))
|
||||
err := srv.protoHandshakeChecks(peers, c)
|
||||
if err != nil {
|
||||
log.Trace(fmt.Sprintf("Not adding %v as peer: %v", c, err))
|
||||
} else {
|
||||
if err == nil {
|
||||
// The handshakes are done and it passed all checks.
|
||||
p := newPeer(c, srv.Protocols)
|
||||
name := truncateName(c.name)
|
||||
log.Debug("Adding p2p peer", "id", c.id, "name", name, "addr", c.fd.RemoteAddr(), "peers", len(peers)+1)
|
||||
peers[c.id] = p
|
||||
go srv.runPeer(p)
|
||||
}
|
||||
@ -544,13 +553,16 @@ running:
|
||||
// dial tasks complete after the peer has been added or
|
||||
// discarded. Unblock the task last.
|
||||
c.cont <- err
|
||||
case p := <-srv.delpeer:
|
||||
case pd := <-srv.delpeer:
|
||||
// A peer disconnected.
|
||||
log.Trace(fmt.Sprint("<-delpeer:", p))
|
||||
delete(peers, p.ID())
|
||||
d := common.PrettyDuration(mclock.Now() - pd.created)
|
||||
pd.log.Debug("Removing p2p peer", "duration", d, "peers", len(peers)-1, "req", pd.requested, "err", pd.err)
|
||||
delete(peers, pd.ID())
|
||||
}
|
||||
}
|
||||
|
||||
log.Trace("P2P networking is spinning down")
|
||||
|
||||
// Terminate discovery. If there is a running lookup it will terminate soon.
|
||||
if srv.ntab != nil {
|
||||
srv.ntab.Close()
|
||||
@ -565,10 +577,9 @@ running:
|
||||
// Wait for peers to shut down. Pending connections and tasks are
|
||||
// not handled here and will terminate soon-ish because srv.quit
|
||||
// is closed.
|
||||
log.Trace(fmt.Sprintf("ignoring %d pending tasks at spindown", len(runningTasks)))
|
||||
for len(peers) > 0 {
|
||||
p := <-srv.delpeer
|
||||
log.Trace(fmt.Sprint("<-delpeer (spindown):", p))
|
||||
p.log.Trace("<-delpeer (spindown)", "remainingTasks", len(runningTasks))
|
||||
delete(peers, p.ID())
|
||||
}
|
||||
}
|
||||
@ -604,7 +615,7 @@ type tempError interface {
|
||||
// inbound connections.
|
||||
func (srv *Server) listenLoop() {
|
||||
defer srv.loopWG.Done()
|
||||
log.Info(fmt.Sprint("Listening on", srv.listener.Addr()))
|
||||
log.Info("RLPx listener up", "self", srv.makeSelf(srv.listener, srv.ntab))
|
||||
|
||||
// This channel acts as a semaphore limiting
|
||||
// active inbound connections that are lingering pre-handshake.
|
||||
@ -629,10 +640,10 @@ func (srv *Server) listenLoop() {
|
||||
for {
|
||||
fd, err = srv.listener.Accept()
|
||||
if tempErr, ok := err.(tempError); ok && tempErr.Temporary() {
|
||||
log.Debug(fmt.Sprintf("Temporary read error: %v", err))
|
||||
log.Debug("Temporary read error", "err", err)
|
||||
continue
|
||||
} else if err != nil {
|
||||
log.Debug(fmt.Sprintf("Read error: %v", err))
|
||||
log.Debug("Read error", "err", err)
|
||||
return
|
||||
}
|
||||
break
|
||||
@ -641,7 +652,7 @@ func (srv *Server) listenLoop() {
|
||||
// Reject connections that do not match NetRestrict.
|
||||
if srv.NetRestrict != nil {
|
||||
if tcp, ok := fd.RemoteAddr().(*net.TCPAddr); ok && !srv.NetRestrict.Contains(tcp.IP) {
|
||||
log.Debug(fmt.Sprintf("Rejected conn %v because it is not whitelisted in NetRestrict", fd.RemoteAddr()))
|
||||
log.Debug("Rejected conn (not whitelisted in NetRestrict)", "addr", fd.RemoteAddr())
|
||||
fd.Close()
|
||||
slots <- struct{}{}
|
||||
continue
|
||||
@ -649,7 +660,7 @@ func (srv *Server) listenLoop() {
|
||||
}
|
||||
|
||||
fd = newMeteredConn(fd, true)
|
||||
log.Debug(fmt.Sprintf("Accepted conn %v", fd.RemoteAddr()))
|
||||
log.Trace("Accepted connection", "addr", fd.RemoteAddr())
|
||||
|
||||
// Spawn the handler. It will give the slot back when the connection
|
||||
// has been established.
|
||||
@ -676,36 +687,37 @@ func (srv *Server) setupConn(fd net.Conn, flags connFlag, dialDest *discover.Nod
|
||||
// Run the encryption handshake.
|
||||
var err error
|
||||
if c.id, err = c.doEncHandshake(srv.PrivateKey, dialDest); err != nil {
|
||||
log.Debug(fmt.Sprintf("%v faild enc handshake: %v", c, err))
|
||||
log.Trace("Failed RLPx handshake", "addr", c.fd.RemoteAddr(), "conn", c.flags, "err", err)
|
||||
c.close(err)
|
||||
return
|
||||
}
|
||||
clog := log.New("id", c.id, "addr", c.fd.RemoteAddr(), "conn", c.flags)
|
||||
// For dialed connections, check that the remote public key matches.
|
||||
if dialDest != nil && c.id != dialDest.ID {
|
||||
c.close(DiscUnexpectedIdentity)
|
||||
log.Debug(fmt.Sprintf("%v dialed identity mismatch, want %x", c, dialDest.ID[:8]))
|
||||
clog.Trace("Dialed identity mismatch", "want", c, dialDest.ID)
|
||||
return
|
||||
}
|
||||
if err := srv.checkpoint(c, srv.posthandshake); err != nil {
|
||||
log.Debug(fmt.Sprintf("%v failed checkpoint posthandshake: %v", c, err))
|
||||
clog.Trace("Rejected peer before protocol handshake", "err", err)
|
||||
c.close(err)
|
||||
return
|
||||
}
|
||||
// Run the protocol handshake
|
||||
phs, err := c.doProtoHandshake(srv.ourHandshake)
|
||||
if err != nil {
|
||||
log.Debug(fmt.Sprintf("%v failed proto handshake: %v", c, err))
|
||||
clog.Trace("Failed proto handshake", "err", err)
|
||||
c.close(err)
|
||||
return
|
||||
}
|
||||
if phs.ID != c.id {
|
||||
log.Debug(fmt.Sprintf("%v wrong proto handshake identity: %x", c, phs.ID[:8]))
|
||||
clog.Trace("Wrong devp2p handshake identity", "err", phs.ID)
|
||||
c.close(DiscUnexpectedIdentity)
|
||||
return
|
||||
}
|
||||
c.caps, c.name = phs.Caps, phs.Name
|
||||
if err := srv.checkpoint(c, srv.addpeer); err != nil {
|
||||
log.Debug(fmt.Sprintf("%v failed checkpoint addpeer: %v", c, err))
|
||||
clog.Trace("Rejected peer", "err", err)
|
||||
c.close(err)
|
||||
return
|
||||
}
|
||||
@ -713,6 +725,13 @@ func (srv *Server) setupConn(fd net.Conn, flags connFlag, dialDest *discover.Nod
|
||||
// launched by run.
|
||||
}
|
||||
|
||||
func truncateName(s string) string {
|
||||
if len(s) > 20 {
|
||||
return s[:20] + "..."
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// checkpoint sends the conn to run, which performs the
|
||||
// post-handshake checks for the stage (posthandshake, addpeer).
|
||||
func (srv *Server) checkpoint(c *conn, stage chan<- *conn) error {
|
||||
@ -733,17 +752,13 @@ func (srv *Server) checkpoint(c *conn, stage chan<- *conn) error {
|
||||
// it waits until the Peer logic returns and removes
|
||||
// the peer.
|
||||
func (srv *Server) runPeer(p *Peer) {
|
||||
log.Debug(fmt.Sprintf("Added %v", p))
|
||||
|
||||
if srv.newPeerHook != nil {
|
||||
srv.newPeerHook(p)
|
||||
}
|
||||
discreason := p.run()
|
||||
remoteRequested, err := p.run()
|
||||
// Note: run waits for existing peers to be sent on srv.delpeer
|
||||
// before returning, so this send should not select on srv.quit.
|
||||
srv.delpeer <- p
|
||||
|
||||
log.Debug(fmt.Sprintf("Removed %v (%v)", p, discreason))
|
||||
srv.delpeer <- peerDrop{p, err, remoteRequested}
|
||||
}
|
||||
|
||||
// NodeInfo represents a short summary of the information known about the host.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user