feat: support channel request proxy

service/http_client.go

@@ -1,7 +1,12 @@
 package service
 
 import (
+	"context"
+	"fmt"
+	"golang.org/x/net/proxy"
+	"net"
 	"net/http"
+	"net/url"
 	"one-api/common"
 	"time"
 )
@@ -30,3 +35,43 @@ func GetHttpClient() *http.Client {
 func GetImpatientHttpClient() *http.Client {
 	return impatientHTTPClient
 }
+
+// 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
+	}
+
+	// 解析代理URL
+	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":
+		// 创建 SOCKS5 代理拨号器
+		dialer, err := proxy.SOCKS5("tcp", parsedURL.Host, nil, 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)
+	}
+}