mirror of https://github.com/v2fly/v2ray-core.git
82 lines
2.0 KiB
Go
82 lines
2.0 KiB
Go
package router
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import (
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"context"
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"net/http"
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"time"
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"github.com/v2fly/v2ray-core/v4/common/net"
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"github.com/v2fly/v2ray-core/v4/common/session"
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"github.com/v2fly/v2ray-core/v4/features/routing"
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)
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type pingClient struct {
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destination string
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httpClient *http.Client
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}
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func newPingClient(destination string, timeout time.Duration, handler string, dispatcher routing.Dispatcher) *pingClient {
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return &pingClient{
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destination: destination,
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httpClient: newHTTPClient(handler, dispatcher, timeout),
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}
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}
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func newDirectPingClient(destination string, timeout time.Duration) *pingClient {
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return &pingClient{
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destination: destination,
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httpClient: &http.Client{Timeout: timeout},
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}
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}
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func newHTTPClient(handler string, dispatcher routing.Dispatcher, timeout time.Duration) *http.Client {
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tr := &http.Transport{
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DisableKeepAlives: true,
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DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
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dest, err := net.ParseDestination(network + ":" + addr)
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if err != nil {
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return nil, err
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}
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h := &session.Handler{
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Tag: handler,
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}
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ctx = session.ContextWithHandler(ctx, h)
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link, err := dispatcher.Dispatch(ctx, dest)
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if err != nil {
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return nil, err
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}
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return net.NewConnection(
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net.ConnectionInputMulti(link.Writer),
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net.ConnectionOutputMulti(link.Reader),
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), nil
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},
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}
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return &http.Client{
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Transport: tr,
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Timeout: timeout,
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// don't follow redirect
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CheckRedirect: func(req *http.Request, via []*http.Request) error {
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return http.ErrUseLastResponse
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},
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}
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}
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// MeasureDelay returns the delay time of the request to dest
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func (s *pingClient) MeasureDelay() (time.Duration, error) {
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if s.httpClient == nil {
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panic("pingClient no initialized")
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}
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req, err := http.NewRequest(http.MethodHead, s.destination, nil)
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if err != nil {
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return rttFailed, err
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}
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start := time.Now()
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resp, err := s.httpClient.Do(req)
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if err != nil {
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return rttFailed, err
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}
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// don't wait for body
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resp.Body.Close()
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return time.Since(start), nil
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}
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