mirror of
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77 lines
1.4 KiB
Go
77 lines
1.4 KiB
Go
package http
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import (
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"io"
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"net"
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"net/http"
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"time"
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C "github.com/Dreamacro/clash/constant"
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)
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type HttpAdapter struct {
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addr *C.Addr
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r *http.Request
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w http.ResponseWriter
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done chan struct{}
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}
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func (h *HttpAdapter) Close() {
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h.done <- struct{}{}
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}
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func (h *HttpAdapter) Addr() *C.Addr {
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return h.addr
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}
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func (h *HttpAdapter) Connect(proxy C.ProxyAdapter) {
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req := http.Transport{
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Dial: func(string, string) (net.Conn, error) {
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return proxy.Conn(), nil
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},
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// from http.DefaultTransport
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MaxIdleConns: 100,
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IdleConnTimeout: 90 * time.Second,
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ExpectContinueTimeout: 1 * time.Second,
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}
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resp, err := req.RoundTrip(h.r)
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if err != nil {
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return
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}
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defer resp.Body.Close()
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header := h.w.Header()
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for k, vv := range resp.Header {
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for _, v := range vv {
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header.Add(k, v)
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}
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}
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h.w.WriteHeader(resp.StatusCode)
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var writer io.Writer = h.w
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if len(resp.TransferEncoding) > 0 && resp.TransferEncoding[0] == "chunked" {
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writer = ChunkWriter{Writer: h.w}
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}
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io.Copy(writer, resp.Body)
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}
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type ChunkWriter struct {
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io.Writer
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}
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func (cw ChunkWriter) Write(b []byte) (int, error) {
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n, err := cw.Writer.Write(b)
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if err == nil {
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cw.Writer.(http.Flusher).Flush()
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}
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return n, err
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}
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func NewHttp(host string, w http.ResponseWriter, r *http.Request) (*HttpAdapter, chan struct{}) {
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done := make(chan struct{})
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return &HttpAdapter{
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addr: parseHttpAddr(host),
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r: r,
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w: w,
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done: done,
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}, done
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}
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