The magicsock derpReader was holding onto 65KB for each DERP
connection forever, just in case.
Make the derp{,http}.Client be in charge of memory instead. It can
reuse its bufio.Reader buffer space.
- Reuse IP length constants from net package.
- Remove beu16 to make endianness functions consistent.
Signed-off-by: Quoc-Viet Nguyen <afelion@gmail.com>
It existed previously to persuade Go that redo-ful directory was
a Go package prior to the first build. But now we have other Go
files in the directory that will fulfil that function.
Signed-off-by: David Anderson <danderson@tailscale.com>
macOS incorrectly sends packets for the local Tailscale IP
into our tunnel interface. We have to turn the packets around
and send them back to the kernel.
Fixestailscale/corp#189.
Signed-off-by: David Anderson <danderson@tailscale.com>
... it was crashing for some reason, running out of stack while
loading a DLL in goversion. I don't understand Windows (or the Go
runtime for Windows) enough to know why that'd be problematic in that
context.
In any case, don't call it, as tryFixLogStateLocation does nothing on
Windows anyway.
tryFixLogStateLocation should probably just call version.CmdName
itself if/when it needs to, after the GOOS check.
We want to run bo.Backoff() after every upload, regardless. If
upload==true but err!=nil, we weren't backing off, which caused some
very-high-throughput log upload retries in bad network conditions.
Updates #282.
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
(The NewMeshClient constructor I added recently was gross in
retrospect at call sites, especially when it wasn't obvious that a
meshKey empty string meant a regular client)
iproute2 3.16.0-2 from Debian Jessie (oldoldstable) doesn't return
exit code 2 when deleting a non-existent IP rule.
Fixes#434
Signed-off-by: David Anderson <danderson@tailscale.com>
This lets a trusted DERP client that knows a pre-shared key subscribe
to the connection list. Upon subscribing, they get the current set
of connected public keys, and then all changes over time.
This lets a set of DERP server peers within a region all stay connected to
each other and know which clients are connected to which nodes.
Updates #388
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The flags were --no-blah for a brief time, then we switched them to
--blah=true/false with a default of true, but didn't fix the boolean
inversions in the code. So up was down, true was false, etc.
Signed-off-by: David Anderson <danderson@tailscale.com>
We have a filter in tailscaled itself now, which is more robust
against weird network topologies (such as the one Docker creates).
Signed-off-by: David Anderson <danderson@tailscale.com>
The zstd library treats that limit as a hard cap on decompressed
size, in the mode we're using it, rather than a window size.
Signed-off-by: David Anderson <danderson@tailscale.com>
Brad Fitzpatrick
Avery Pennarun
Quoc-Viet Nguyen
David Anderson
Zijie Lu
Dmytro Shynkevych