64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
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package channel
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import (
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"context"
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"errors"
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"net"
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"net/http"
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"net/url"
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"strings"
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"time"
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"golang.org/x/net/proxy"
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)
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func newHTTPClient(proxyAddress string, timeout time.Duration) (*http.Client, error) {
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transport, err := newHTTPTransport(proxyAddress)
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if err != nil {
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return nil, err
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}
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return &http.Client{
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Timeout: timeout,
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Transport: transport,
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}, nil
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}
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func newHTTPTransport(proxyAddress string) (*http.Transport, error) {
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base, ok := http.DefaultTransport.(*http.Transport)
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if !ok {
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return &http.Transport{}, nil
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}
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transport := base.Clone()
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proxyAddress = strings.TrimSpace(proxyAddress)
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if proxyAddress == "" {
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transport.Proxy = nil
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return transport, nil
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}
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if !strings.Contains(proxyAddress, "://") {
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proxyAddress = "http://" + proxyAddress
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}
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u, err := url.Parse(proxyAddress)
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if err != nil {
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return nil, err
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}
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switch strings.ToLower(u.Scheme) {
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case "http", "https":
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transport.Proxy = http.ProxyURL(u)
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return transport, nil
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case "socks5", "socks5h":
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normalized := *u
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normalized.Scheme = "socks5"
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dialer, err := proxy.FromURL(&normalized, proxy.Direct)
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if err != nil {
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return nil, err
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}
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transport.Proxy = nil
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transport.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
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return dialer.Dial(network, addr)
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}
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return transport, nil
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default:
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return nil, errors.New("unsupported proxy scheme: " + strings.TrimSpace(u.Scheme))
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}
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}
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