Use vendoring for backward compatibility
The switch of the Madon library to Go modules breaks builds with
Go version < 1.11 since the import path now contains "v2".
This patch adds vendoring so that it can still build with those
versions.
Let's try to re-enable Travis builds with Go v1.8-1.11...
// +build go1.8
package websocket
import (
"crypto/tls"
"net/http/httptrace"
)
func doHandshakeWithTrace(trace *httptrace.ClientTrace, tlsConn *tls.Conn, cfg *tls.Config) error {
if trace.TLSHandshakeStart != nil {
trace.TLSHandshakeStart()
}
err := doHandshake(tlsConn, cfg)
if trace.TLSHandshakeDone != nil {
trace.TLSHandshakeDone(tlsConn.ConnectionState(), err)
}
return err
}