77 lines
1.4 KiB
Go
77 lines
1.4 KiB
Go
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package vmess
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import (
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"bytes"
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"fmt"
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"math/rand"
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"net"
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"net/http"
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"net/textproto"
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)
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type httpConn struct {
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net.Conn
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cfg *HTTPConfig
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rhandshake bool
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whandshake bool
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}
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type HTTPConfig struct {
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Method string
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Host string
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Path []string
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Headers map[string][]string
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}
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// Read implements net.Conn.Read()
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func (hc *httpConn) Read(b []byte) (int, error) {
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if hc.rhandshake {
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n, err := hc.Conn.Read(b)
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return n, err
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}
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reader := textproto.NewConn(hc.Conn)
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// First line: GET /index.html HTTP/1.0
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if _, err := reader.ReadLine(); err != nil {
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return 0, err
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}
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if _, err := reader.ReadMIMEHeader(); err != nil {
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return 0, err
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}
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hc.rhandshake = true
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return hc.Conn.Read(b)
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}
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// Write implements io.Writer.
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func (hc *httpConn) Write(b []byte) (int, error) {
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if hc.whandshake {
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return hc.Conn.Write(b)
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}
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path := hc.cfg.Path[rand.Intn(len(hc.cfg.Path))]
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u := fmt.Sprintf("http://%s%s", hc.cfg.Host, path)
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req, _ := http.NewRequest("GET", u, bytes.NewBuffer(b))
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for key, list := range hc.cfg.Headers {
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req.Header.Set(key, list[rand.Intn(len(list))])
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}
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req.ContentLength = int64(len(b))
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if err := req.Write(hc.Conn); err != nil {
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return 0, err
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}
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hc.whandshake = true
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return len(b), nil
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}
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func (hc *httpConn) Close() error {
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return hc.Conn.Close()
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}
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func StreamHTTPConn(conn net.Conn, cfg *HTTPConfig) net.Conn {
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return &httpConn{
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Conn: conn,
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cfg: cfg,
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}
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}
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