feat: embed terasu inside

vendor/github.com/gorilla/websocket/client.go

@@ -17,6 +17,8 @@ import (
 	"net/url"
 	"strings"
 	"time"
+
+	"github.com/fumiama/terasu"
 )
 
 // ErrBadHandshake is returned when the server response to opening handshake is
@@ -340,7 +342,7 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 		if cfg.ServerName == "" {
 			cfg.ServerName = hostNoPort
 		}
-		tlsConn := tls.Client(netConn, cfg)
+		tlsConn := tls.Client(terasu.NewConn(netConn), cfg)
 		netConn = tlsConn
 
 		if trace != nil && trace.TLSHandshakeStart != nil {