tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	120273d7f6	portlist: document, clean up, fix an open fd spike, optimize a bit I noticed portlist when looking at some profiles and hadn't looked at the code much before. This is a first pass over it. It allocates a fair bit. More love remains, but this does a bit: name old time/op new time/op delta GetList-8 9.92ms ± 8% 9.64ms ±12% ~ (p=0.247 n=10+10) name old alloc/op new alloc/op delta GetList-8 931kB ± 0% 869kB ± 0% -6.70% (p=0.000 n=10+10) name old allocs/op new allocs/op delta GetList-8 4.59k ± 0% 3.69k ± 1% -19.71% (p=0.000 n=10+10) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	6c3820e8c4	cmd/tailscaled: rename relaynode reference in defaults file comment	5 years ago
Brad Fitzpatrick	19cc4f8b8e	control/controlclient: remove a number literal in string slice offset	5 years ago
Brad Fitzpatrick	42e98d4edc	Quiet two little log annoyances.	5 years ago
Brad Fitzpatrick	db2436c7ff	wgengine/magicsock: don't interrupt endpoint updates, merge all mutex into one Before, endpoint updates were constantly being interrupted and resumed on Linux due to tons of LinkChange messages from over-zealous Linux netlink messages (from router_linux.go) Now that endpoint updates are fast and bounded in time anyway, just let them run to completion, but note that another needs to be scheduled after. Now logs went from pages of noise to just: root@taildoc:~# grep -i -E 'stun\|endpoint update' log 2020/03/13 08:51:29 magicsock.Conn: starting endpoint update (initial) 2020/03/13 08:51:30 magicsock.Conn.ReSTUN: endpoint update active, need another later ("link-change-minor") 2020/03/13 08:51:31 magicsock.Conn: starting endpoint update (link-change-minor) 2020/03/13 08:51:31 magicsock.Conn.ReSTUN: endpoint update active, need another later ("link-change-minor") 2020/03/13 08:51:33 magicsock.Conn: starting endpoint update (link-change-minor) 2020/03/13 08:51:33 magicsock.Conn.ReSTUN: endpoint update active, need another later ("link-change-minor") 2020/03/13 08:51:35 magicsock.Conn: starting endpoint update (link-change-minor) 2020/03/13 08:51:35 magicsock.Conn.ReSTUN: endpoint update active, need another later ("link-change-minor") Or, seen in another run: 2020/03/13 08:45:41 magicsock.Conn: starting endpoint update (periodic) 2020/03/13 08:46:09 magicsock.Conn: starting endpoint update (periodic) 2020/03/13 08:46:21 magicsock.Conn: starting endpoint update (link-change-major) 2020/03/13 08:46:37 magicsock.Conn: starting endpoint update (periodic) 2020/03/13 08:47:05 magicsock.Conn: starting endpoint update (periodic) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	db31550854	wgengine: don't Reconfig on boring link changes Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Avery Pennarun	7dd63abaed	tailcfg.NetInfo: add a .String() renderer. For pretty printing purposes in logs.	5 years ago
Avery Pennarun	b23cb11eaf	ipn: Prefs.String(): print the current derp setting.	5 years ago
David Anderson	aeb88864e0	ipn: don't clobber netinfo in Start().	5 years ago
Avery Pennarun	8b8e3f08a0	Fix staticcheck complaint.	5 years ago
Avery Pennarun	b4897e7de8	controlclient/netmap: write our own b.ConciseDiffFrom(a) function. This removes the need for go-cmp, which is extremely bloaty so we had to leave it out of iOS. As a result, we had also left it out of macOS, and so we didn't print netmap diffs at all on darwin-based platforms. Oops. As a bonus, the output format of the new function is way better. Minor oddity: because I used the dumbest possible diff algorithm, the sort order is a bit dumb. We print all "removed" lines and then print all "added" lines, rather than doing the usual diff-like thing of interspersing them. This probably doesn't matter (maybe it's an improvement).	5 years ago
Avery Pennarun	96bb05ce2f	controlclient: reformat netmap.Concise() and add DERP server info. The .Concise() view had grown hard to read over time. Originally, we assumed a peer almost always had just one endpoint and one-or-more allowedips. With magicsock, we now almost always have multiple endpoints per peer. And empirically, almost every peer has only one allowedip. Change their order so we can line up allowedips vertically. Also do some tweaking to make multiple endpoints easier to read. While we're here, add a column to show the home DERP server of each peer, if any.	5 years ago
Avery Pennarun	f2e2ffa423	controlclient: log the entire netmap up to every 5 minutes. We log it once upon receiving the first copy of the map, then subsequently when a new one appears, but only if we haven't logged one less than 5 minutes ago. This avoids overly cluttering the log (as we did before, logging the netmap every time one appeared, which could be hundreds of lines every few seconds), but still gives the log enough context to help in diagnosing problems retroactively.	5 years ago
Brad Fitzpatrick	b9c6d3ceb8	netcheck: work behind UDP-blocked networks again, add tests Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	a87ee4168a	stunner: quiet a harmless log warning	5 years ago
Brad Fitzpatrick	bc73dcf204	wgengine/magicsock: don't block in Send waiting for derphttp.Send Fixes #137 Updates #109 Updates #162 Updates #163 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	8807913be9	wgengine/magicsock: wait for previous DERP goroutines to end before new ones Updates #109 (hopefully fixes, will wait for graphs to be happy) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	eff6dcdb4e	wgengine/magicsock: log more about why we're re-STUNing	5 years ago
David Crawshaw	5ad947c761	cmd/derper: set a write timeout Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	72dbf26f63	derp: test that client a->b and a->c relaying do not interfere Without the recent write deadline introduction, this test fails. They still do interfere, but the interference is now bound by the write deadline. Many improvements are possible. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	e838b3fb59	derp: use a write timeout when sending to clients Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	3df1b97ea8	derp: do not treat failure to relay as the fault of the sender If Alice attempts to send a packet to Bob and the DERP server encounters an error on the socket to Bob, we should not disconnect Alice for that. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	43aa8595dd	derp: introduce Conn interface This lets us test with something other than a net.Conn. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	41ac4a79d6	net/nettest: new package with net-like testing primitives This is a lot like wiring up a local UDP socket, read and write deadlines work. The big difference is the Block feature, which lets you stop the packet flow without breaking the connection. This lets you emulate broken sockets and test timeouts actually work. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
Brad Fitzpatrick	52c0cb12fb	stunner: return wrapped error (currently unused)	5 years ago
Brad Fitzpatrick	b4d02a251a	syncs: add new package for extra sync types	5 years ago
David Crawshaw	57f220656c	ipn: search for ErrStateNotExist with errors.Is Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
Avery Pennarun	40c6f952c5	Merge branch 'master' of github.com:tailscale/tailscale into HEAD * 'master' of github.com:tailscale/tailscale: netcheck: fix data races for staggler STUN packets arriving after GetReport wgengine/magicsock: add a pointer value for logging netcheck: ignore IPv4 STUN failures if we saw at least one reply netcheck: ignore IPv6 STUN failures derp: add clients_replaced counter version: bump OSS version datestamp.	5 years ago
Avery Pennarun	509247bf42	tailscale, tailscaled: update safesocket port number. This makes them able to connect to each other on Windows.	5 years ago
Brad Fitzpatrick	afc3479d04	netcheck: fix data races for staggler STUN packets arriving after GetReport Fixes #179	5 years ago
Brad Fitzpatrick	b3ddf51a15	wgengine/magicsock: add a pointer value for logging Updates #109 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	0d3f42e1d8	netcheck: ignore IPv4 STUN failures if we saw at least one reply Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	ed7e088729	netcheck: ignore IPv6 STUN failures Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	4fd29349b9	derp: add clients_replaced counter Updates #109	5 years ago
David Anderson	b364a871bf	version: bump OSS version datestamp.	5 years ago
David Anderson	72d9e1d633	go.mod: bump wireguard-go version.	5 years ago
Brad Fitzpatrick	b0f8931d26	wgengine/magicsock: make a test signature a bit more explicit	5 years ago
David Crawshaw	7ec54e0064	wgengine/magicsock: remove TODO The TODO above derphttp.NewClient suggests it does network I/O, but the derphttp client connects lazily and so creating one is very cheap. Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
David Crawshaw	af58cfc476	go.mod: bump wireguard-go version Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	5 years ago
Brad Fitzpatrick	01b4bec33f	stunner: re-do how Stunner works It used to make assumptions based on having Anycast IPs that are super near. Now we're intentionally going to a bunch of different distant IPs to measure latency. Also, optimize how the hairpin detection works. No need to STUN on that socket. Just use that separate socket for sending, once we know the other UDP4 socket's endpoint. The trick is: make our test probe also a STUN packet, so it fits through magicsock's existing STUN routing. This drops netcheck from ~5 seconds to ~250-500ms. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
David Anderson	4affea2691	go.mod: bump wireguard-go version. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	77af7e5436	wgengine/magicsock: mark test logfunc as a helper. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	7eda3af034	wgengine/magicsock: clean up derp http servers on shutdown. Failure to do this leads to fd exhaustion at -count=10000, and increasingly poor execution north of -count=100. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	d651715528	wgengine/magicsock: synchronize test STUN shutdown. Failure to do so triggers either a data race or a panic in the testing package, due to racey use of t.Logf. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
David Anderson	86baf60bd4	wgengine/magicsock: synchronize epUpdate cleanup on shutdown. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
Brad Fitzpatrick	023df9239e	Move linkstate boring change filtering to magicsock So we can at least re-STUN on boring updates. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
David Anderson	592fec7606	wgengine/magicsock: move device close to uncursed portion of test. Device close used to suffer from deadlocks, but no longer. Signed-off-by: David Anderson <danderson@tailscale.com>	5 years ago
Brad Fitzpatrick	a265d7cbff	wgengine/magicsock: in STUN-disabled test mode, let endpoint discovery proceed	5 years ago
Brad Fitzpatrick	5c1e443d34	wgengine/monitor: don't call LinkChange when interfaces look unchanged Basically, don't trust the OS-level link monitor to only tell you interesting things. Sanity check it. Also, move the interfaces package into the net directory now that we have it.	5 years ago
Brad Fitzpatrick	39c0ae1dba	derp/derpmap: new DERP config package, merge netcheck into magicsock more Fixes #153 Updates #162 Updates #163 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago

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8215 Commits (1cecc43522c4b3bb9beb3e3fbe42741cccdbcb1d) All Branches Search

8215 Commits (1cecc43522c4b3bb9beb3e3fbe42741cccdbcb1d)

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