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Co-Authored-By: Claude <noreply@anthropic.com>

service/http_client.go

@@ -0,0 +1,81 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"net/url"
+	"one-api/common"
+	"time"
+
+	"golang.org/x/net/proxy"
+)
+
+var httpClient *http.Client
+
+func InitHttpClient() {
+	if common.RelayTimeout == 0 {
+		httpClient = &http.Client{}
+	} else {
+		httpClient = &http.Client{
+			Timeout: time.Duration(common.RelayTimeout) * time.Second,
+		}
+	}
+}
+
+func GetHttpClient() *http.Client {
+	return httpClient
+}
+
+// NewProxyHttpClient 创建支持代理的 HTTP 客户端
+func NewProxyHttpClient(proxyURL string) (*http.Client, error) {
+	if proxyURL == "" {
+		return http.DefaultClient, nil
+	}
+
+	parsedURL, err := url.Parse(proxyURL)
+	if err != nil {
+		return nil, err
+	}
+
+	switch parsedURL.Scheme {
+	case "http", "https":
+		return &http.Client{
+			Transport: &http.Transport{
+				Proxy: http.ProxyURL(parsedURL),
+			},
+		}, nil
+
+	case "socks5", "socks5h":
+		// 获取认证信息
+		var auth *proxy.Auth
+		if parsedURL.User != nil {
+			auth = &proxy.Auth{
+				User:     parsedURL.User.Username(),
+				Password: "",
+			}
+			if password, ok := parsedURL.User.Password(); ok {
+				auth.Password = password
+			}
+		}
+
+		// 创建 SOCKS5 代理拨号器
+		// proxy.SOCKS5 使用 tcp 参数，所有 TCP 连接包括 DNS 查询都将通过代理进行。行为与 socks5h 相同
+		dialer, err := proxy.SOCKS5("tcp", parsedURL.Host, auth, proxy.Direct)
+		if err != nil {
+			return nil, err
+		}
+
+		return &http.Client{
+			Transport: &http.Transport{
+				DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+					return dialer.Dial(network, addr)
+				},
+			},
+		}, nil
+
+	default:
+		return nil, fmt.Errorf("unsupported proxy scheme: %s", parsedURL.Scheme)
+	}
+}