97 lines
1.7 KiB
Go
97 lines
1.7 KiB
Go
package adapters
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import (
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"fmt"
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"net"
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"net/http"
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"net/url"
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"time"
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C "github.com/Dreamacro/clash/constant"
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)
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const (
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tcpTimeout = 5 * time.Second
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)
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// DelayTest get the delay for the specified URL
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func DelayTest(proxy C.Proxy, url string) (t int16, err error) {
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addr, err := urlToMetadata(url)
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if err != nil {
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return
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}
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start := time.Now()
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instance, err := proxy.Generator(&addr)
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if err != nil {
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return
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}
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defer instance.Close()
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transport := &http.Transport{
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Dial: func(string, string) (net.Conn, error) {
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return instance.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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TLSHandshakeTimeout: 10 * time.Second,
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ExpectContinueTimeout: 1 * time.Second,
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}
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client := http.Client{Transport: transport}
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resp, err := client.Get(url)
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if err != nil {
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return
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}
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resp.Body.Close()
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t = int16(time.Since(start) / time.Millisecond)
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return
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}
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func urlToMetadata(rawURL string) (addr C.Metadata, err error) {
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u, err := url.Parse(rawURL)
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if err != nil {
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return
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}
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port := u.Port()
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if port == "" {
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if u.Scheme == "https" {
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port = "443"
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} else if u.Scheme == "http" {
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port = "80"
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} else {
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err = fmt.Errorf("%s scheme not Support", rawURL)
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return
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}
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}
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addr = C.Metadata{
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AddrType: C.AtypDomainName,
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Host: u.Hostname(),
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IP: nil,
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Port: port,
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}
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return
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}
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func selectFast(in chan interface{}) chan interface{} {
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out := make(chan interface{})
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go func() {
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p, open := <-in
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if open {
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out <- p
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}
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close(out)
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for range in {
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}
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}()
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return out
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}
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func tcpKeepAlive(c net.Conn) {
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if tcp, ok := c.(*net.TCPConn); ok {
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tcp.SetKeepAlive(true)
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tcp.SetKeepAlivePeriod(30 * time.Second)
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}
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}
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