func NewRoundTripper(tlsConfig *tls.Config) httpstream.UpgradeRoundTripper {
	return &SpdyRoundTripper{tlsConfig: tlsConfig}
}
NewSpdyRoundTripper creates a new SpdyRoundTripper that will use
the specified tlsConfig.
package spdy
import (
	"bufio"
	"crypto/tls"
	"fmt"
	"io/ioutil"
	"net"
	"net/http"
	"strings"
	"github.com/GoogleCloudPlatform/kubernetes/pkg/util/httpstream"
	"github.com/GoogleCloudPlatform/kubernetes/third_party/golang/netutil"
)
type SpdyRoundTripper struct {
	tlsConfig *tls.Config
	conn net.Conn
}