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54 lines
2.2 KiB
Go
54 lines
2.2 KiB
Go
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// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !ios
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// +build !ios
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package magicsock
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import (
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"os"
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"strconv"
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)
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// Various debugging and experimental tweakables, set by environment
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// variable.
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var (
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// logPacketDests prints the known addresses for a peer every time
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// they change, in the legacy (non-discovery) endpoint code only.
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logPacketDests, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_LOG_PACKET_DESTS"))
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// debugDisco prints verbose logs of active discovery events as
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// they happen.
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debugDisco, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_DISCO"))
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// debugOmitLocalAddresses removes all local interface addresses
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// from magicsock's discovered local endpoints. Used in some tests.
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debugOmitLocalAddresses, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_OMIT_LOCAL_ADDRS"))
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// debugUseDerpRoute temporarily (2020-03-22) controls whether DERP
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// reverse routing is enabled (Issue 150). It will become always true
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// later.
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debugUseDerpRouteEnv = os.Getenv("TS_DEBUG_ENABLE_DERP_ROUTE")
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debugUseDerpRoute, _ = strconv.ParseBool(debugUseDerpRouteEnv)
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// logDerpVerbose logs all received DERP packets, including their
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// full payload.
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logDerpVerbose, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_DERP"))
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// debugReSTUNStopOnIdle unconditionally enables the "shut down
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// STUN if magicsock is idle" behavior that normally only triggers
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// on mobile devices, lowers the shutdown interval, and logs more
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// verbosely about idle measurements.
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debugReSTUNStopOnIdle, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_RESTUN_STOP_ON_IDLE"))
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// debugAlwaysDERP disables the use of UDP, forcing all peer communication over DERP.
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debugAlwaysDERP, _ = strconv.ParseBool(os.Getenv("TS_DEBUG_ALWAYS_USE_DERP"))
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)
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// inTest reports whether the running program is a test that set the
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// IN_TS_TEST environment variable.
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//
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// Unlike the other debug tweakables above, this one needs to be
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// checked every time at runtime, because tests set this after program
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// startup.
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func inTest() bool {
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inTest, _ := strconv.ParseBool(os.Getenv("IN_TS_TEST"))
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return inTest
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}
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