add proxy option

model/podcast.go

@@ -4,9 +4,12 @@ package model
 import (
 	"context"
 	"fmt"
+	"net/http"
+	"net/url"
 	"time"
 
 	"github.com/mmcdole/gofeed"
+	"github.com/sirupsen/logrus"
 )
 
 // Podcast 表示一个播客及其剧集
@@ -61,7 +64,7 @@ type Podcast struct {
 }
 
 // LoadFeed 从URL加载播客RSS订阅，timeout为超时时间，如果timeout<=0则使用默认值30秒
-func LoadFeed(url string, timeout time.Duration) (*Podcast, error) {
+func LoadFeed(feedURL, proxy string, timeout time.Duration) (*Podcast, error) {
 	if timeout <= 0 {
 		timeout = 30 * time.Second
 	}
@@ -70,7 +73,24 @@ func LoadFeed(url string, timeout time.Duration) (*Podcast, error) {
 	defer cancel()
 
 	fp := gofeed.NewParser()
-	feed, err := fp.ParseURLWithContext(url, ctx)
+
+	fp.Client = &http.Client{}
+	// setup proxy
+	if proxy != "" {
+		proxyURL, err := url.Parse(proxy)
+		if err != nil {
+			logrus.WithError(err).Errorf("Failed to parse proxy url: %s", proxy)
+			return nil, err
+		}
+		fp.Client = &http.Client{
+			Transport: &http.Transport{
+				Proxy: http.ProxyURL(proxyURL),
+			},
+		}
+		logrus.Infof("Using proxy: %s", proxy)
+	}
+
+	feed, err := fp.ParseURLWithContext(feedURL, ctx)
 	if err != nil {
 		return nil, fmt.Errorf("解析播客订阅失败: %w", err)
 	}