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path: root/wgengine/magicsock/debugknobs_stubs.go
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2025-07-15tailcfg,wgengine/magicsock: set peer relay CapVer (#16531)Jordan Whited1-1/+0
Updates tailscale/corp#27502 Updates tailscale/corp#30051 Signed-off-by: Jordan Whited <jordan@tailscale.com>
2025-06-26wgengine/magicsock: add envknob to toggle UDP relay feature (#16396)Jordan Whited1-0/+1
Updates tailscale/corp#27502 Signed-off-by: Jordan Whited <jordan@tailscale.com>
2024-07-10wgengine/magicsock: allow a CSV list for pretendpointLee Briggs1-1/+1
Load Balancers often have more than one ingress IP, so allowing us to add multiple means we can offer multiple options. Updates #12578 Change-Id: I4aa49a698d457627d2f7011796d665c67d4c7952 Signed-off-by: Lee Briggs <lee@leebriggs.co.uk>
2024-07-08wgengine/magicsock: add debug envknob for injecting an endpointBrad Fitzpatrick1-1/+6
For testing. Lee wants to play with 'AWS Global Accelerator Custom Routing with Amazon Elastic Kubernetes Service'. If this works well enough, we can promote it. Updates #12578 Change-Id: I5018347ed46c15c9709910717d27305d0aedf8f4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-07-06control/controlknobs,tailcfg,wgengine/magicsock: remove DRPO shutoff switchBrad Fitzpatrick1-2/+0
The DERP Return Path Optimization (DRPO) is over four years old (and on by default for over two) and we haven't had problems, so time to remove the emergency shutoff code (controlknob) which we've never used. The controlknobs are only meant for new features, to mitigate risk. But we don't want to keep them forever, as they kinda pollute the code. Updates #150 Change-Id: If021bc8fd1b51006d8bddd1ffab639bb1abb0ad1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-09-21wgengine/magicsock: replace CanPMTUD() with ShouldPMTUD()Val1-1/+2
Replace CanPMTUD() with ShouldPMTUD() to check if peer path MTU discovery should be enabled, in preparation for adding support for enabling/disabling peer MTU dynamically. Updated #311 Signed-off-by: Val <valerie@tailscale.com>
2023-09-21wgengine/magicsock: rename debugPMTUD() to debugEnablePMTUD()Val1-1/+1
Make the debugknob variable name for enabling peer path MTU discovery match the env variable name. Updates #311 Signed-off-by: Val <valerie@tailscale.com>
2023-09-11wgengine/magicsock: make peerMap also keyed by NodeIDBrad Fitzpatrick1-0/+1
In prep for incremental netmap update plumbing (#1909), make peerMap also keyed by NodeID, as all the netmap node mutations passed around later will be keyed by NodeID. In the process, also: * add envknob.InDevMode, as a signal that we can panic more aggressively in unexpected cases. * pull two moderately large blocks of code in Conn.SetNetworkMap out into their own methods * convert a few more sets from maps to set.Set Updates #1909 Change-Id: I7acdd64452ba58e9d554140ee7a8760f9043f961 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-11magicsock: set the don't fragment sockopt (#8715)salman aljammaz1-0/+1
This sets the Don't Fragment flag, for now behind the TS_DEBUG_ENABLE_PMTUD envknob. Updates #311. Signed-off-by: Val <valerie@tailscale.com> Signed-off-by: salman <salman@tailscale.com>
2023-07-26wgengine/magicsock: factor out more separable partsDavid Anderson1-0/+2
Updates #8720 Signed-off-by: David Anderson <danderson@tailscale.com>
2023-04-04derp,magicsock: add debug envknobs for HTTP and derp server name (#7744)valscale1-0/+2
Make developing derp easier by: 1. Creating an envknob telling clients to use HTTP to connect to derp servers, so devs don't have to acquire a valid TLS cert. 2. Creating an envknob telling clients which derp server to connect to, so devs don't have to edit the ACLs in the admin console to add a custom DERP map. 3. Explaining how the -dev and -a command lines args to derper interact. To use this: 1. Run derper with -dev. 2. Run tailscaled with TS_DEBUG_USE_DERP_HTTP=1 and TS_DEBUG_USE_DERP_ADDR=localhost This will result in the client connecting to derp via HTTP on port 3340. Fixes #7700 Signed-off-by: Val <valerie@tailscale.com>
2023-03-24derp, derphttp, magicsock: send new unknown peer frame when destination is ↵valscale1-10/+10
unknown (#7552) * wgengine/magicsock: add envknob to send CallMeMaybe to non-existent peer For testing older client version responses to the PeerGone packet format change. Updates #4326 Signed-off-by: Val <valerie@tailscale.com> * derp: remove dead sclient struct member replaceLimiter Leftover from an previous solution to the duplicate client problem. Updates #2751 Signed-off-by: Val <valerie@tailscale.com> * derp, derp/derphttp, wgengine/magicsock: add new PeerGone message type Not Here Extend the PeerGone message type by adding a reason byte. Send a PeerGone "Not Here" message when an endpoint sends a disco message to a peer that this server has no record of. Fixes #4326 Signed-off-by: Val <valerie@tailscale.com> --------- Signed-off-by: Val <valerie@tailscale.com>
2023-01-27all: update copyright and license headersWill Norris1-3/+2
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>
2022-11-04all: remove old +build tagsBrad Fitzpatrick1-1/+0
The //go:build syntax was introduced in Go 1.17: https://go.dev/doc/go1.17#build-lines gofmt has kept the +build and go:build lines in sync since then, but enough time has passed. Time to remove them. Done with: perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build') Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-09-16wgengine/magicsock: add client flag and envknob to disable heartbeat (#5638)phirework1-0/+1
Baby steps towards turning off heartbeat pings entirely as per #540. This doesn't change any current magicsock functionality and requires additional changes to send/disco paths before the flag can be turned on. Updates #540 Change-Id: Idc9a72748e74145b068d67e6dd4a4ffe3932efd0 Signed-off-by: Jenny Zhang <jz@tailscale.com> Signed-off-by: Jenny Zhang <jz@tailscale.com>
2022-09-15envknob: support changing envknobs post-initBrad Fitzpatrick1-10/+10
Updates #5114 Change-Id: Ia423fc7486e1b3f3180a26308278be0086fae49b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-06-06wasm: exclude code that's not used on iOS for Wasm tooMihai Parparita1-0/+24
It has similar size constraints. Saves ~1.9MB from the Wasm build. Updates #3157 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
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