mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-26 03:25:35 +00:00
71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
48 lines
1.9 KiB
Go
48 lines
1.9 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
//go:build !ios && !js
|
|
|
|
package magicsock
|
|
|
|
import (
|
|
"tailscale.com/envknob"
|
|
)
|
|
|
|
const linkDebug = true
|
|
|
|
// Various debugging and experimental tweakables, set by environment
|
|
// variable.
|
|
var (
|
|
// debugDisco prints verbose logs of active discovery events as
|
|
// they happen.
|
|
debugDisco = envknob.RegisterBool("TS_DEBUG_DISCO")
|
|
// debugOmitLocalAddresses removes all local interface addresses
|
|
// from magicsock's discovered local endpoints. Used in some tests.
|
|
debugOmitLocalAddresses = envknob.RegisterBool("TS_DEBUG_OMIT_LOCAL_ADDRS")
|
|
// debugUseDerpRoute temporarily (2020-03-22) controls whether DERP
|
|
// reverse routing is enabled (Issue 150).
|
|
debugUseDerpRoute = envknob.RegisterOptBool("TS_DEBUG_ENABLE_DERP_ROUTE")
|
|
// logDerpVerbose logs all received DERP packets, including their
|
|
// full payload.
|
|
logDerpVerbose = envknob.RegisterBool("TS_DEBUG_DERP")
|
|
// debugReSTUNStopOnIdle unconditionally enables the "shut down
|
|
// STUN if magicsock is idle" behavior that normally only triggers
|
|
// on mobile devices, lowers the shutdown interval, and logs more
|
|
// verbosely about idle measurements.
|
|
debugReSTUNStopOnIdle = envknob.RegisterBool("TS_DEBUG_RESTUN_STOP_ON_IDLE")
|
|
// debugAlwaysDERP disables the use of UDP, forcing all peer communication over DERP.
|
|
debugAlwaysDERP = envknob.RegisterBool("TS_DEBUG_ALWAYS_USE_DERP")
|
|
// debugEnableSilentDisco disables the use of heartbeatTimer on the endpoint struct
|
|
// and attempts to handle disco silently. See issue #540 for details.
|
|
debugEnableSilentDisco = envknob.RegisterBool("TS_DEBUG_ENABLE_SILENT_DISCO")
|
|
)
|
|
|
|
// inTest reports whether the running program is a test that set the
|
|
// IN_TS_TEST environment variable.
|
|
//
|
|
// Unlike the other debug tweakables above, this one needs to be
|
|
// checked every time at runtime, because tests set this after program
|
|
// startup.
|
|
func inTest() bool { return envknob.Bool("IN_TS_TEST") }
|