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cmd/stunstamp: implement HTTPS & TCP latency measurements (#13082)

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HTTPS mirrors current netcheck behavior and TCP uses tcp_info->rtt.

Updates tailscale/corp#22114

Signed-off-by: Jordan Whited <jordan@tailscale.com>
This commit is contained in:
Jordan Whited
2024-08-12 13:39:11 -07:00
committed by GitHub
parent bc2744da4b
commit 218110963d
3 changed files with 235 additions and 17 deletions
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8
cmd/stunstamp/stunstamp_linux.go
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@@ -11,6 +11,7 @@ import (
"fmt"
"io"
"net/netip"
"syscall"
"time"
"github.com/mdlayher/socket"
@@ -56,7 +57,7 @@ func parseTimestampFromCmsgs(oob []byte) (time.Time, error) {
return time.Time{}, errors.New("failed to parse timestamp from cmsgs")
}
func measureSTUNRTTKernel(conn io.ReadWriteCloser, dst netip.AddrPort) (rtt time.Duration, err error) {
func measureSTUNRTTKernel(conn io.ReadWriteCloser, hostname string, dst netip.AddrPort) (rtt time.Duration, err error) {
sconn, ok := conn.(*socket.Conn)
if !ok {
return 0, fmt.Errorf("conn of unexpected type: %T", conn)
@@ -144,3 +145,8 @@ func protocolSupportsKernelTS(p protocol) bool {
// TODO: jwhited support ICMP
return false
}
func setSOReuseAddr(fd uintptr) error {
// we may restart faster than TIME_WAIT can clear
return syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
}