Commit Graph

15 Commits (0d76d7d21c951872433de708839025c8dfb304b3)

Author SHA1 Message Date
Brad Fitzpatrick 367fba8520 control/controlhttp: don't link ts2021 server + websocket code on iOS
We probably shouldn't link it in anywhere, but let's fix iOS for now.

Updates #13762
Updates tailscale/corp#20099

Change-Id: Idac116e9340434334c256acba3866f02bd19827c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 weeks ago
Kyle Carberry 6c852fa817 go.{mod,sum}: migrate from nhooyr.io/websocket to github.com/coder/websocket
Coder has just adopted nhooyr/websocket which unfortunately changes the import path.

`github.com/coder/coder` imports `tailscale.com/net/wsconn` which was still pointing
to `nhooyr.io/websocket`, but this change updates it.

See https://coder.com/blog/websocket

Updates #13154

Change-Id: I3dec6512472b14eae337ae22c5bcc1e3758888d5
Signed-off-by: Kyle Carberry <kyle@carberry.com>
3 months ago
David Anderson 8b492b4121 net/wsconn: accept a remote addr string and plumb it through
This makes wsconn.Conns somewhat present reasonably when they are
the client of an http.Request, rather than just put a placeholder
in that field.

Updates tailscale/corp#13777

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
Will Norris 71029cea2d all: update copyright and license headers
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>
2 years ago
Matthias Gabriel 355c3b2be7 control/controlhttp: fix header case-sensitivity
Change-Id: I49269bc969a80382997ec5c9de33c4f56d9dc787
Signed-off-by: Matthias Gabriel <matthias.gabriel@etit.tu-chemnitz.de>
2 years ago
Brad Fitzpatrick 5e9e57ecf5 control/controlhttp: add AcceptHTTP hook to add coalesced Server->Client write
New plan for #5972. Instead of sending the public key in the clear
(from earlier unreleased 246274b8e9) where the client might have to
worry about it being dropped or tampered with and retrying, we'll
instead send it post-Noise handshake but before the HTTP/2 connection
begins.

This replaces the earlier extraHeaders hook with a different sort of
hook that allows us to combine two writes on the wire in one packet.

Updates #5972

Change-Id: I42cdf7c1859b53ca4dfa5610bd1b840c6986e09c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Mihai Parparita 9d04ffc782 net/wsconn: add back custom wrapper for turning a websocket.Conn into a net.Conn
We removed it in #4806 in favor of the built-in functionality from the
nhooyr.io/websocket package. However, it has an issue with deadlines
that has not been fixed yet (see nhooyr/websocket#350). Temporarily
go back to using a custom wrapper (using the fix from our fork) so that
derpers will stop closing connections too aggressively.

Updates #5921

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
Brad Fitzpatrick 246274b8e9 control/controlhttp: allow setting, getting Upgrade headers in Noise upgrade
Not currently used, but will allow us to usually remove a round-trip for
a future feature.

Updates #5972

Change-Id: I2770ea28e3e6ec9626d1cbb505a38ba51df7fba2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Mihai Parparita 1ce0e558a7 cmd/derper, control/controlhttp: disable WebSocket compression
The data that we send over WebSockets is encrypted and thus not
compressible. Additionally, Safari has a broken implementation of compression
(see nhooyr/websocket#218) that makes enabling it actively harmful.

Fixes tailscale/corp#6943

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
Mihai Parparita edc90ebc61 net/wsconn: remove homegrown wrapper for turning a websocket.Conn into a net.Conn
The one from the nhooyr/websocket package seems to work equally well.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
Mihai Parparita a9f32656f5 control/controlhttp: allow client and server to communicate over WebSockets
We can't do Noise-over-HTTP in Wasm/JS (because we don't have bidirectional
communication), but we should be able to do it over WebSockets. Reuses
derp WebSocket support that allows us to turn a WebSocket connection
into a net.Conn.

Updates #3157

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
David Anderson f570372b4d control/controlbase: don't enforce a max protocol version at handshake time.
Doing so makes development unpleasant, because we have to first break the
client by bumping to a version the control server rejects, then upgrade
the control server to make it accept the new version.

This strict rejection at handshake time is only necessary if we want to
blocklist some vulnerable protocol versions in the future. So, switch
to a default-permissive stance: until we have such a version that we
have to eagerly block early, we'll accept whatever version the client
presents, and leave it to the user of controlbase.Conn to make decisions
based on that version.

Noise still enforces that the client and server *agree* on what protocol
version is being used, and the control server still has the option to
finish the handshake and then hang up with an in-noise error, rather
than abort at the handshake level.

Updates #3488

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
David Anderson 02ad987e24 control/controlbase: make the protocol version number selectable.
This is so that we can plumb our client capability version through
the protocol as the Noise version. The capability version increments
more frequently than strictly required (the Noise version only needs
to change when cryptographically-significant changes are made to
the protocol, whereas the capability version also indicates changes
in non-cryptographically-significant parts of the protocol), but this
gives us a safe pre-auth way to determine if the client supports
future protocol features, while still relying on Noise's strong
assurance that the client and server have agreed on the same version.

Currently, the server executes the same protocol regardless of the
version number, and just presents the version to the caller so they
can do capability-based things in the upper RPC protocol. In future,
we may add a ratchet to disallow obsolete protocols, or vary the
Noise handshake behavior based on requested version.

Updates #3488

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago
Brad Fitzpatrick b647977b33 net/netutil: move some net utils from control/controlhttp to netutil
In prep for reuse elsewhere.

Change-Id: I1b804edf76ac66b9108e6f434e77eab7a7472d69
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
David Anderson 96f008cf87 control/controlhttp: package to get a controlbase.Conn over HTTP(S).
Updates #3488

Signed-off-by: David Anderson <danderson@tailscale.com>
3 years ago