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frontend/udp: debug log connection ID generation/validation

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This commit is contained in:
Leo Balduf 2018-09-16 22:35:21 +02:00
parent 862b452cef
commit 96d0c3d829
1 changed files with 5 additions and 1 deletions
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6
frontend/udp/connection_id.go
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@ -6,7 +6,9 @@ import (
"net" "net"
"time" "time"
sha256 "github.com/minio/sha256-simd" "github.com/minio/sha256-simd"
"github.com/chihaya/chihaya/pkg/log"
) )
// ttl is the number of seconds a connection ID should be valid according to // ttl is the number of seconds a connection ID should be valid according to
@ -33,12 +35,14 @@ func NewConnectionID(ip net.IP, now time.Time, key string) []byte {
macBytes := mac.Sum(nil)[:4] macBytes := mac.Sum(nil)[:4]
copy(buf[4:], macBytes) copy(buf[4:], macBytes)
log.Debug("generated connection ID", log.Fields{"ip": ip, "now": now, "key": key, "connID": buf})
return buf return buf
} }
// ValidConnectionID determines whether a connection identifier is legitimate. // ValidConnectionID determines whether a connection identifier is legitimate.
func ValidConnectionID(connectionID []byte, ip net.IP, now time.Time, maxClockSkew time.Duration, key string) bool { func ValidConnectionID(connectionID []byte, ip net.IP, now time.Time, maxClockSkew time.Duration, key string) bool {
ts := time.Unix(int64(binary.BigEndian.Uint32(connectionID[:4])), 0) ts := time.Unix(int64(binary.BigEndian.Uint32(connectionID[:4])), 0)
log.Debug("validating connection ID", log.Fields{"connID": connectionID, "ip": ip, "ts": ts, "now": now, "key": key})
if now.After(ts.Add(ttl)) || ts.After(now.Add(maxClockSkew)) { if now.After(ts.Add(ttl)) || ts.After(now.Add(maxClockSkew)) {
return false return false
} }