derp: add more derp stats for dropped and received packets
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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@ -39,8 +39,9 @@ type Server struct {
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logf logger.Logf
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// Counters:
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packetsSent int64
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bytesSent int64
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packetsSent, bytesSent int64
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packetsRecv, bytesRecv int64
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packetsDropped int64
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mu sync.Mutex
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closed bool
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@ -221,6 +222,7 @@ func (s *Server) accept(nc net.Conn, brw *bufio.ReadWriter) error {
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s.mu.Unlock()
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if dst == nil {
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atomic.AddInt64(&s.packetsDropped, 1)
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s.logf("derp: %s: client %x: dropping packet for unknown %x", nc.RemoteAddr(), c.key, dstKey)
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continue
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}
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@ -351,6 +353,8 @@ func (s *Server) recvPacket(ctx context.Context, br *bufio.Reader, frameLen uint
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if _, err := io.ReadFull(br, contents); err != nil {
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return key.Public{}, nil, err
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}
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atomic.AddInt64(&s.packetsRecv, 1)
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atomic.AddInt64(&s.bytesRecv, int64(len(contents)))
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return dstKey, contents, nil
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}
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@ -422,6 +426,9 @@ func (s *Server) Stats() *ServerStats {
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TotalAccepts: s.accepts,
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PacketsSent: atomic.LoadInt64(&s.packetsSent),
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BytesSent: atomic.LoadInt64(&s.bytesSent),
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PacketsReceived: atomic.LoadInt64(&s.packetsRecv),
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BytesReceived: atomic.LoadInt64(&s.bytesRecv),
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PacketsDropped: atomic.LoadInt64(&s.packetsDropped),
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}
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}
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@ -452,4 +459,7 @@ type ServerStats struct {
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TotalAccepts int64 `json:"totalAccepts"`
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PacketsSent int64 `json:"packetsSent"`
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BytesSent int64 `json:"bytesSent"`
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PacketsReceived int64 `json:"packetsReceived"`
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BytesReceived int64 `json:"bytessReceived"`
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PacketsDropped int64 `json:"packetsDropped"`
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}
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