112 lines
1.9 KiB
Go
112 lines
1.9 KiB
Go
package vmess
|
|
|
|
import (
|
|
"io"
|
|
"math/rand"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
|
|
"golang.org/x/net/http2"
|
|
)
|
|
|
|
type h2Conn struct {
|
|
net.Conn
|
|
*http2.ClientConn
|
|
pwriter *io.PipeWriter
|
|
res *http.Response
|
|
cfg *H2Config
|
|
}
|
|
|
|
type H2Config struct {
|
|
Hosts []string
|
|
Path string
|
|
}
|
|
|
|
func (hc *h2Conn) establishConn() error {
|
|
preader, pwriter := io.Pipe()
|
|
|
|
host := hc.cfg.Hosts[rand.Intn(len(hc.cfg.Hosts))]
|
|
path := hc.cfg.Path
|
|
// TODO: connect use VMess Host instead of H2 Host
|
|
req := http.Request{
|
|
Method: "PUT",
|
|
Host: host,
|
|
URL: &url.URL{
|
|
Scheme: "https",
|
|
Host: host,
|
|
Path: path,
|
|
},
|
|
Proto: "HTTP/2",
|
|
ProtoMajor: 2,
|
|
ProtoMinor: 0,
|
|
Body: preader,
|
|
Header: map[string][]string{
|
|
"Accept-Encoding": {"identity"},
|
|
},
|
|
}
|
|
|
|
// it will be close at : `func (hc *h2Conn) Close() error`
|
|
res, err := hc.ClientConn.RoundTrip(&req)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
hc.pwriter = pwriter
|
|
hc.res = res
|
|
|
|
return nil
|
|
}
|
|
|
|
// Read implements net.Conn.Read()
|
|
func (hc *h2Conn) Read(b []byte) (int, error) {
|
|
if hc.res != nil && !hc.res.Close {
|
|
n, err := hc.res.Body.Read(b)
|
|
return n, err
|
|
}
|
|
|
|
if err := hc.establishConn(); err != nil {
|
|
return 0, err
|
|
}
|
|
return hc.res.Body.Read(b)
|
|
}
|
|
|
|
// Write implements io.Writer.
|
|
func (hc *h2Conn) Write(b []byte) (int, error) {
|
|
if hc.pwriter != nil {
|
|
return hc.pwriter.Write(b)
|
|
}
|
|
|
|
if err := hc.establishConn(); err != nil {
|
|
return 0, err
|
|
}
|
|
return hc.pwriter.Write(b)
|
|
}
|
|
|
|
func (hc *h2Conn) Close() error {
|
|
if err := hc.pwriter.Close(); err != nil {
|
|
return err
|
|
}
|
|
if err := hc.ClientConn.Shutdown(hc.res.Request.Context()); err != nil {
|
|
return err
|
|
}
|
|
if err := hc.Conn.Close(); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func StreamH2Conn(conn net.Conn, cfg *H2Config) (net.Conn, error) {
|
|
transport := &http2.Transport{}
|
|
|
|
cconn, err := transport.NewClientConn(conn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &h2Conn{
|
|
Conn: conn,
|
|
ClientConn: cconn,
|
|
cfg: cfg,
|
|
}, nil
|
|
}
|