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derp: don't log on all dropped packets; super spammy

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Signed-off-by: Brad Fitzpatrick <brad@danga.com>
This commit is contained in:
Brad Fitzpatrick 2020-02-28 13:33:47 -08:00
parent 38acccad09
commit d59d0576af
1 changed files with 7 additions and 1 deletions
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8
derp/derp_server.go
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@ -18,6 +18,8 @@ import (
"io" "io"
"math/big" "math/big"
"net" "net"
"os"
"strconv"
"sync" "sync"
"sync/atomic" "sync/atomic"
"time" "time"
@ -28,6 +30,8 @@ import (
"tailscale.com/types/logger" "tailscale.com/types/logger"
) )
var debug, _ = strconv.ParseBool(os.Getenv("DERP_DEBUG_LOGS"))
// Server is a DERP server. // Server is a DERP server.
type Server struct { type Server struct {
// BytesPerSecond, if non-zero, specifies how many bytes per // BytesPerSecond, if non-zero, specifies how many bytes per
@ -226,7 +230,9 @@ func (s *Server) accept(nc net.Conn, brw *bufio.ReadWriter) error {
if dst == nil { if dst == nil {
atomic.AddInt64(&s.packetsDropped, 1) atomic.AddInt64(&s.packetsDropped, 1)
s.logf("derp: %s: client %x: dropping packet for unknown %x", nc.RemoteAddr(), c.key, dstKey) if debug {
s.logf("derp: %s: client %x: dropping packet for unknown %x", nc.RemoteAddr(), c.key, dstKey)
}
continue continue
} }