mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-26 19:45:35 +00:00
7d9b1de3aa
Treat UDP send EPERM errors as a lost UDP packet, not something super fatal. That's just the Linux firewall preventing it from going out. And add a leaf package net/neterror for that (and future) policy that all three packages can share, with tests. Updates #3619 Change-Id: Ibdb838c43ee9efe70f4f25f7fc7fdf4607ba9c1d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
56 lines
1001 B
Go
56 lines
1001 B
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package neterror
|
|
|
|
import (
|
|
"errors"
|
|
"net"
|
|
"os"
|
|
"syscall"
|
|
"testing"
|
|
)
|
|
|
|
func TestTreatAsLostUDP(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
err error
|
|
want bool
|
|
}{
|
|
{"nil", nil, false},
|
|
{"non-nil", errors.New("foo"), false},
|
|
{"eperm", syscall.EPERM, true},
|
|
{
|
|
name: "operror",
|
|
err: &net.OpError{
|
|
Op: "write",
|
|
Err: &os.SyscallError{
|
|
Syscall: "sendto",
|
|
Err: syscall.EPERM,
|
|
},
|
|
},
|
|
want: true,
|
|
},
|
|
{
|
|
name: "host_unreach",
|
|
err: &net.OpError{
|
|
Op: "write",
|
|
Err: &os.SyscallError{
|
|
Syscall: "sendto",
|
|
Err: syscall.EHOSTUNREACH,
|
|
},
|
|
},
|
|
want: false,
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
if got := TreatAsLostUDP(tt.err); got != tt.want {
|
|
t.Errorf("got = %v; want %v", got, tt.want)
|
|
}
|
|
})
|
|
}
|
|
|
|
}
|