improve: 从环境变量读取代理配置

util/http.go

@@ -37,13 +37,15 @@ func HttpPackSelect(addr net.Addr) *Http {
 }
 
 func genHttpPack(addr net.Addr) *Http {
-	return &Http{
+	tr := tool.GenHttpTransport(&tool.HttpTransportOptions{
-		Client: tool.GenHttpClient(&tool.HttpClientOptions{
-			Transport: tool.GenHttpTransport(&tool.HttpTransportOptions{
 		Timeout:           global.Timeout,
 		LocalAddr:         addr,
 		SkipSslCertVerify: global.Config.Settings.Basic.SkipCertVerify,
-			}),
+	})
+	tr.Proxy = http.ProxyFromEnvironment
+	return &Http{
+		Client: tool.GenHttpClient(&tool.HttpClientOptions{
+			Transport: tr,
 			Timeout:   global.Timeout,
 		}),
 	}