ooni-probe-cli/internal/engine/experiment/websteps/tls.go
kelmenhorst 1874f7a7c2
enable utls for websteps (#442)
This diff enables `websteps` to use uTLS for TLS parroting. It integrates the `oohttp.StdlibTransport` wrapper which uses the `ooni/oohttp` fork. `oohttp` supports TLS-like connections like `utls.Conn`.
As a prototype, the testhelper and `websteps` code now uses the `utls.HelloChrome_Auto` fingerprint, i.e. the simulated TLS fingerprint of the Google Chrome browser.

It is a further contribution for my GSoC project.

Reference issue: https://github.com/ooni/probe/issues/1733
2021-08-18 16:10:27 +02:00

24 lines
538 B
Go

package websteps
import (
"context"
"crypto/tls"
"net"
"github.com/ooni/probe-cli/v3/internal/netxlite"
utls "gitlab.com/yawning/utls.git"
)
// TLSDo performs the TLS check.
func TLSDo(ctx context.Context, conn net.Conn, hostname string) (net.Conn, error) {
tlsConf := &tls.Config{
ServerName: hostname,
NextProtos: []string{"h2", "http/1.1"},
}
h := &netxlite.TLSHandshakerConfigurable{
NewConn: netxlite.NewConnUTLS(&utls.HelloChrome_Auto),
}
tlsConn, _, err := h.Handshake(ctx, conn, tlsConf)
return tlsConn, err
}