yggdrasil-network/yggdrasil-go
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Link refactor (#941)

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* Link refactoring

* More refactoring

* More tweaking

* Cleaner shutdowns, UNIX socket support, more tweaks

* Actorise links, remove mutex

* SOCKS support
This commit is contained in:
Neil Alexander 2022-09-17 20:07:00 +01:00 • committed by GitHub
parent 414aaf6eb9
commit 5ef61faeff
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18 changed files with 738 additions and 698 deletions
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46
src/core/tcp_linux.go
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@ -1,46 +0,0 @@
//go:build linux
// +build linux
package core
import (
"syscall"
"golang.org/x/sys/unix"
)
// WARNING: This context is used both by net.Dialer and net.Listen in tcp.go
func (t *tcp) tcpContext(network, address string, c syscall.RawConn) error {
var control error
var bbr error
control = c.Control(func(fd uintptr) {
bbr = unix.SetsockoptString(int(fd), unix.IPPROTO_TCP, unix.TCP_CONGESTION, "bbr")
})
// Log any errors
if bbr != nil {
t.links.core.log.Debugln("Failed to set tcp_congestion_control to bbr for socket, SetsockoptString error:", bbr)
}
if control != nil {
t.links.core.log.Debugln("Failed to set tcp_congestion_control to bbr for socket, Control error:", control)
}
// Return nil because errors here are not considered fatal for the connection, it just means congestion control is suboptimal
return nil
}
func (t *tcp) getControl(sintf string) func(string, string, syscall.RawConn) error {
return func(network, address string, c syscall.RawConn) error {
var err error
btd := func(fd uintptr) {
err = unix.BindToDevice(int(fd), sintf)
}
_ = c.Control(btd)
if err != nil {
t.links.core.log.Debugln("Failed to set SO_BINDTODEVICE:", sintf)
}
return t.tcpContext(network, address, c)
}
}