TheArchive/tailscale
1
0
Fork 0
mirror of https://github.com/tailscale/tailscale.git synced 2025-01-05 14:57:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

ipn: debug zero bytes in IPN json messages

Browse Source 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2020-11-06 13:12:52 -08:00 committed by Brad Fitzpatrick
parent 8f30fa67aa
commit b4e19b95ed
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
ipn/message.go
View File

@ -5,6 +5,7 @@
package ipn
import (
"bytes"
"encoding/binary"
"encoding/json"
"errors"
@ -19,6 +20,8 @@
"tailscale.com/version"
)
var jsonEscapedZero = []byte(`\u0000`)
type NoArgs struct{}
type StartArgs struct {
@ -85,6 +88,9 @@ func (bs *BackendServer) send(n Notify) {
if err != nil {
log.Fatalf("Failed json.Marshal(notify): %v\n%#v", err, n)
}
if bytes.Contains(b, jsonEscapedZero) {
log.Printf("[unexpected] zero byte in BackendServer.send notify message: %q", b)
}
bs.sendNotifyMsg(b)
}
@ -204,6 +210,9 @@ func (bc *BackendClient) GotNotifyMsg(b []byte) {
// not interesting
return
}
if bytes.Contains(b, jsonEscapedZero) {
log.Printf("[unexpected] zero byte in BackendClient.GotNotifyMsg message: %q", b)
}
n := Notify{}
if err := json.Unmarshal(b, &n); err != nil {
log.Fatalf("BackendClient.Notify: cannot decode message (length=%d)\n%#v", len(b), string(b))
@ -230,6 +239,9 @@ func (bc *BackendClient) send(cmd Command) {
if err != nil {
log.Fatalf("Failed json.Marshal(cmd): %v\n%#v\n", err, cmd)
}
if bytes.Contains(b, jsonEscapedZero) {
log.Printf("[unexpected] zero byte in BackendClient.send command: %q", b)
}
bc.sendCommandMsg(b)
}