mirror of
https://github.com/SagerNet/sing-box.git
synced 2024-12-25 15:45:39 +08:00
258 lines
5.1 KiB
Go
258 lines
5.1 KiB
Go
package v2rayhttp
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import (
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std_bufio "bufio"
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"io"
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"net"
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"net/http"
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"os"
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"strings"
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"sync"
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"time"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/baderror"
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"github.com/sagernet/sing/common/buf"
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"github.com/sagernet/sing/common/bufio"
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E "github.com/sagernet/sing/common/exceptions"
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F "github.com/sagernet/sing/common/format"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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)
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type HTTPConn struct {
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net.Conn
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request *http.Request
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requestWritten bool
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responseRead bool
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responseCache *buf.Buffer
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}
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func NewHTTP1Conn(conn net.Conn, request *http.Request) *HTTPConn {
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return &HTTPConn{
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Conn: conn,
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request: request,
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}
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}
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func (c *HTTPConn) Read(b []byte) (n int, err error) {
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if !c.responseRead {
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reader := std_bufio.NewReader(c.Conn)
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response, err := http.ReadResponse(reader, c.request)
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if err != nil {
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return 0, E.Cause(err, "read response")
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}
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if response.StatusCode != 200 {
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return 0, E.New("v2ray-http: unexpected status: ", response.Status)
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}
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if cacheLen := reader.Buffered(); cacheLen > 0 {
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c.responseCache = buf.NewSize(cacheLen)
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_, err = c.responseCache.ReadFullFrom(reader, cacheLen)
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if err != nil {
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c.responseCache.Release()
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return 0, E.Cause(err, "read cache")
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}
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}
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c.responseRead = true
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}
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if c.responseCache != nil {
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n, err = c.responseCache.Read(b)
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if err == io.EOF {
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c.responseCache.Release()
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c.responseCache = nil
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}
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if n > 0 {
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return n, nil
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}
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}
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return c.Conn.Read(b)
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}
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func (c *HTTPConn) Write(b []byte) (int, error) {
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if !c.requestWritten {
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err := c.writeRequest(b)
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if err != nil {
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return 0, E.Cause(err, "write request")
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}
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c.requestWritten = true
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return len(b), nil
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}
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return c.Conn.Write(b)
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}
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func (c *HTTPConn) writeRequest(payload []byte) error {
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writer := bufio.NewBufferedWriter(c.Conn, buf.New())
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const CRLF = "\r\n"
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_, err := writer.Write([]byte(F.ToString(c.request.Method, " ", c.request.URL.RequestURI(), " HTTP/1.1", CRLF)))
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if err != nil {
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return err
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}
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if c.request.Header.Get("Host") == "" {
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c.request.Header.Set("Host", c.request.Host)
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}
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for key, value := range c.request.Header {
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_, err = writer.Write([]byte(F.ToString(key, ": ", strings.Join(value, ", "), CRLF)))
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if err != nil {
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return err
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}
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}
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_, err = writer.Write([]byte(CRLF))
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if err != nil {
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return err
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}
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_, err = writer.Write(payload)
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if err != nil {
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return err
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}
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err = writer.Fallthrough()
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if err != nil {
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return err
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}
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return nil
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}
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func (c *HTTPConn) ReaderReplaceable() bool {
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return c.responseRead
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}
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func (c *HTTPConn) WriterReplaceable() bool {
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return c.requestWritten
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}
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func (c *HTTPConn) NeedHandshake() bool {
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return !c.requestWritten
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}
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func (c *HTTPConn) Upstream() any {
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return c.Conn
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}
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type HTTP2Conn struct {
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reader io.Reader
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writer io.Writer
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create chan struct{}
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err error
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}
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func NewHTTPConn(reader io.Reader, writer io.Writer) HTTP2Conn {
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return HTTP2Conn{
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reader: reader,
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writer: writer,
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}
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}
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func NewLateHTTPConn(writer io.Writer) *HTTP2Conn {
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return &HTTP2Conn{
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create: make(chan struct{}),
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writer: writer,
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}
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}
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func (c *HTTP2Conn) Setup(reader io.Reader, err error) {
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c.reader = reader
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c.err = err
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close(c.create)
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}
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func (c *HTTP2Conn) Read(b []byte) (n int, err error) {
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if c.reader == nil {
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<-c.create
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if c.err != nil {
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return 0, c.err
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}
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}
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n, err = c.reader.Read(b)
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return n, baderror.WrapH2(err)
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}
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func (c *HTTP2Conn) Write(b []byte) (n int, err error) {
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n, err = c.writer.Write(b)
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return n, baderror.WrapH2(err)
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}
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func (c *HTTP2Conn) Close() error {
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return common.Close(c.reader, c.writer)
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}
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func (c *HTTP2Conn) LocalAddr() net.Addr {
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return M.Socksaddr{}
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}
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func (c *HTTP2Conn) RemoteAddr() net.Addr {
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return M.Socksaddr{}
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}
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func (c *HTTP2Conn) SetDeadline(t time.Time) error {
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return os.ErrInvalid
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}
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func (c *HTTP2Conn) SetReadDeadline(t time.Time) error {
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return os.ErrInvalid
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}
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func (c *HTTP2Conn) SetWriteDeadline(t time.Time) error {
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return os.ErrInvalid
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}
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func (c *HTTP2Conn) NeedAdditionalReadDeadline() bool {
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return true
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}
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type ServerHTTPConn struct {
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HTTP2Conn
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Flusher http.Flusher
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}
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func (c *ServerHTTPConn) Write(b []byte) (n int, err error) {
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n, err = c.writer.Write(b)
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if err == nil {
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c.Flusher.Flush()
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}
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return
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}
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type HTTP2ConnWrapper struct {
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N.ExtendedConn
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access sync.Mutex
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closed bool
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}
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func NewHTTP2Wrapper(conn net.Conn) *HTTP2ConnWrapper {
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return &HTTP2ConnWrapper{
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ExtendedConn: bufio.NewExtendedConn(conn),
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}
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}
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func (w *HTTP2ConnWrapper) Write(p []byte) (n int, err error) {
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w.access.Lock()
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defer w.access.Unlock()
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if w.closed {
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return 0, net.ErrClosed
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}
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return w.ExtendedConn.Write(p)
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}
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func (w *HTTP2ConnWrapper) WriteBuffer(buffer *buf.Buffer) error {
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w.access.Lock()
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defer w.access.Unlock()
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if w.closed {
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return net.ErrClosed
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}
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return w.ExtendedConn.WriteBuffer(buffer)
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}
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func (w *HTTP2ConnWrapper) CloseWrapper() {
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w.access.Lock()
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defer w.access.Unlock()
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w.closed = true
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}
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func (w *HTTP2ConnWrapper) Close() error {
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w.CloseWrapper()
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return w.ExtendedConn.Close()
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}
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func (w *HTTP2ConnWrapper) Upstream() any {
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return w.ExtendedConn
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}
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