sing-box/transport/v2rayhttp/conn.go

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package v2rayhttp
import (
"io"
"net"
"net/http"
"os"
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"sync"
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"time"
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"github.com/sagernet/sing-box/common/baderror"
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"github.com/sagernet/sing/common"
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"github.com/sagernet/sing/common/buf"
"github.com/sagernet/sing/common/bufio"
N "github.com/sagernet/sing/common/network"
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)
type HTTPConn struct {
reader io.Reader
writer io.Writer
create chan struct{}
err error
}
func newHTTPConn(reader io.Reader, writer io.Writer) HTTPConn {
return HTTPConn{
reader: reader,
writer: writer,
}
}
func newLateHTTPConn(writer io.Writer) *HTTPConn {
return &HTTPConn{
create: make(chan struct{}),
writer: writer,
}
}
func (c *HTTPConn) setup(reader io.Reader, err error) {
c.reader = reader
c.err = err
close(c.create)
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}
func (c *HTTPConn) Read(b []byte) (n int, err error) {
if c.reader == nil {
<-c.create
if c.err != nil {
return 0, c.err
}
}
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n, err = c.reader.Read(b)
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return n, baderror.WrapH2(err)
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}
func (c *HTTPConn) 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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}
func (c *HTTPConn) Close() error {
return common.Close(c.reader, c.writer)
}
func (c *HTTPConn) LocalAddr() net.Addr {
return nil
}
func (c *HTTPConn) RemoteAddr() net.Addr {
return nil
}
func (c *HTTPConn) SetDeadline(t time.Time) error {
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if responseWriter, loaded := c.writer.(interface {
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SetWriteDeadline(time.Time) error
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}); loaded {
return responseWriter.SetWriteDeadline(t)
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}
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return os.ErrInvalid
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}
func (c *HTTPConn) SetReadDeadline(t time.Time) error {
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if responseWriter, loaded := c.writer.(interface {
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SetReadDeadline(time.Time) error
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}); loaded {
return responseWriter.SetReadDeadline(t)
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}
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return os.ErrInvalid
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}
func (c *HTTPConn) SetWriteDeadline(t time.Time) error {
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if responseWriter, loaded := c.writer.(interface {
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SetWriteDeadline(time.Time) error
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}); loaded {
return responseWriter.SetWriteDeadline(t)
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}
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return os.ErrInvalid
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}
type ServerHTTPConn struct {
HTTPConn
flusher http.Flusher
}
func (c *ServerHTTPConn) Write(b []byte) (n int, err error) {
n, err = c.writer.Write(b)
if err == nil {
c.flusher.Flush()
}
return
}
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type HTTP2ConnWrapper struct {
N.ExtendedConn
access sync.Mutex
closed bool
}
func NewHTTP2Wrapper(conn net.Conn) *HTTP2ConnWrapper {
return &HTTP2ConnWrapper{
ExtendedConn: bufio.NewExtendedConn(conn),
}
}
func (w *HTTP2ConnWrapper) Write(p []byte) (n int, err error) {
w.access.Lock()
defer w.access.Unlock()
if w.closed {
return 0, net.ErrClosed
}
return w.ExtendedConn.Write(p)
}
func (w *HTTP2ConnWrapper) WriteBuffer(buffer *buf.Buffer) error {
w.access.Lock()
defer w.access.Unlock()
if w.closed {
return net.ErrClosed
}
return w.ExtendedConn.WriteBuffer(buffer)
}
func (w *HTTP2ConnWrapper) CloseWrapper() {
w.access.Lock()
defer w.access.Unlock()
w.closed = true
}
func (w *HTTP2ConnWrapper) Upstream() any {
return w.ExtendedConn
}