105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package repository
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import (
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"context"
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"crypto/tls"
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"encoding/json"
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"fmt"
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"io"
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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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"sub2api/internal/service"
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"golang.org/x/net/proxy"
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)
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type proxyProbeService struct{}
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func NewProxyExitInfoProber() service.ProxyExitInfoProber {
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return &proxyProbeService{}
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}
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func (s *proxyProbeService) ProbeProxy(ctx context.Context, proxyURL string) (*service.ProxyExitInfo, int64, error) {
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transport, err := createProxyTransport(proxyURL)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to create proxy transport: %w", err)
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}
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client := &http.Client{
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Transport: transport,
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Timeout: 15 * time.Second,
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}
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startTime := time.Now()
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req, err := http.NewRequestWithContext(ctx, "GET", "https://ipinfo.io/json", nil)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to create request: %w", err)
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}
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resp, err := client.Do(req)
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if err != nil {
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return nil, 0, fmt.Errorf("proxy connection failed: %w", err)
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}
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defer resp.Body.Close()
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latencyMs := time.Since(startTime).Milliseconds()
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if resp.StatusCode != http.StatusOK {
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return nil, latencyMs, fmt.Errorf("request failed with status: %d", resp.StatusCode)
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}
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var ipInfo struct {
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IP string `json:"ip"`
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City string `json:"city"`
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Region string `json:"region"`
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Country string `json:"country"`
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}
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, latencyMs, fmt.Errorf("failed to read response: %w", err)
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}
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if err := json.Unmarshal(body, &ipInfo); err != nil {
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return nil, latencyMs, fmt.Errorf("failed to parse response: %w", err)
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}
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return &service.ProxyExitInfo{
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IP: ipInfo.IP,
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City: ipInfo.City,
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Region: ipInfo.Region,
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Country: ipInfo.Country,
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}, latencyMs, nil
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}
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func createProxyTransport(proxyURL string) (*http.Transport, error) {
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parsedURL, err := url.Parse(proxyURL)
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if err != nil {
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return nil, fmt.Errorf("invalid proxy URL: %w", err)
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}
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transport := &http.Transport{
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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}
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switch parsedURL.Scheme {
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case "http", "https":
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transport.Proxy = http.ProxyURL(parsedURL)
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case "socks5":
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dialer, err := proxy.FromURL(parsedURL, proxy.Direct)
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if err != nil {
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return nil, fmt.Errorf("failed to create socks5 dialer: %w", err)
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}
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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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default:
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return nil, fmt.Errorf("unsupported proxy protocol: %s", parsedURL.Scheme)
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}
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return transport, nil
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}
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