control/controlhttp/controlhttpserver: split out Accept to its own package

Otherwise all the clients only using control/controlhttp for the
ts2021 HTTP client were also pulling in WebSocket libraries, as the
server side always needs to speak websockets, but only GOOS=js clients
speak it.

This doesn't yet totally remove the websocket dependency on Linux because
Linux has a envknob opt-in to act like GOOS=js for manual testing and force
the use of WebSockets for DERP only (not control). We can put that behind
a build tag in a future change to eliminate the dep on all GOOSes.

Updates #1278

Change-Id: I4f60508f4cad52bf8c8943c8851ecee506b7ebc9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-11-07 15:59:19 -08:00
committed by Brad Fitzpatrick
parent 23880eb5b0
commit c3306bfd15
10 changed files with 68 additions and 42 deletions

View File

@@ -18,15 +18,6 @@ import (
)
const (
// upgradeHeader is the value of the Upgrade HTTP header used to
// indicate the Tailscale control protocol.
upgradeHeaderValue = "tailscale-control-protocol"
// handshakeHeaderName is the HTTP request header that can
// optionally contain base64-encoded initial handshake
// payload, to save an RTT.
handshakeHeaderName = "X-Tailscale-Handshake"
// serverUpgradePath is where the server-side HTTP handler to
// to do the protocol switch is located.
serverUpgradePath = "/ts2021"