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network: don't panic if there is no reason for disconnect

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Although error should always be there, we shouldn't fail like this if it's not:
    | panic: runtime error: invalid memory address or nil pointer dereference
    | [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0xc8884c]
    |
    | goroutine 113 [running]:
    | github.com/nspcc-dev/neo-go/pkg/network.(*Server).run(0xc000150580)
    |         github.com/nspcc-dev/neo-go/pkg/network/server.go:396 +0x7ac
    | github.com/nspcc-dev/neo-go/pkg/network.(*Server).Start(0xc000150580, 0x0)
    |         github.com/nspcc-dev/neo-go/pkg/network/server.go:294 +0x3fb
    | created by github.com/nspcc-dev/neo-go/cli/server.startServer
    |         github.com/nspcc-dev/neo-go/cli/server/server.go:344 +0x56f
This commit is contained in:
Roman Khimov 2021-11-01 12:19:00 +03:00
parent 67eac3a27f
commit 2eeec73770
1 changed files with 1 additions and 1 deletions
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2
pkg/network/server.go
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@ -393,7 +393,7 @@ func (s *Server) run() {
s.lock.Unlock() s.lock.Unlock()
s.log.Warn("peer disconnected", s.log.Warn("peer disconnected",
zap.Stringer("addr", drop.peer.RemoteAddr()), zap.Stringer("addr", drop.peer.RemoteAddr()),
zap.String("reason", drop.reason.Error()), zap.Error(drop.reason),
zap.Int("peerCount", s.PeerCount())) zap.Int("peerCount", s.PeerCount()))
addr := drop.peer.PeerAddr().String() addr := drop.peer.PeerAddr().String()
if drop.reason == errIdenticalID { if drop.reason == errIdenticalID {