diff --git a/README.md b/README.md
index 8576a8ee..d6c28c12 100644
--- a/README.md
+++ b/README.md
@@ -115,7 +115,7 @@ https://github.com/XIU2/CloudflareSpeedTest
     -t 4
         延迟测速次数；单个 IP 延迟测速次数，为 1 时将过滤丢包的IP，TCP协议；(默认 4)
     -tp 443
-        延迟测速端口；延迟测速 TCP 协议的端口；(默认 443)
+        指定测速端口；延迟测速/下载测速时使用的端口；(默认 443)
     -dn 10
         下载测速数量；延迟测速并排序后，从最低延迟起下载测速的数量；(默认 10)
     -dt 10
diff --git a/main.go b/main.go
index d5123116..9adad0dc 100644
--- a/main.go
+++ b/main.go
@@ -30,7 +30,7 @@ https://github.com/XIU2/CloudflareSpeedTest
     -t 4
         延迟测速次数；单个 IP 延迟测速次数，为 1 时将过滤丢包的IP，TCP协议；(默认 4)
     -tp 443
-        延迟测速端口；延迟测速 TCP 协议的端口；(默认 443)
+        指定测速端口；延迟测速/下载测速时使用的端口；(默认 443)
     -dn 10
         下载测速数量；延迟测速并排序后，从最低延迟起下载测速的数量；(默认 10)
     -dt 10
@@ -63,7 +63,7 @@ https://github.com/XIU2/CloudflareSpeedTest
 	var minDelay, maxDelay, downloadTime int
 	flag.IntVar(&task.Routines, "n", 200, "测速线程数量")
 	flag.IntVar(&task.PingTimes, "t", 4, "延迟测速次数")
-	flag.IntVar(&task.TCPPort, "tp", 443, "延迟测速端口")
+	flag.IntVar(&task.TCPPort, "tp", 443, "指定测速端口")
 	flag.IntVar(&maxDelay, "tl", 9999, "平均延迟上限")
 	flag.IntVar(&minDelay, "tll", 0, "平均延迟下限")
 	flag.IntVar(&downloadTime, "dt", 10, "下载测速时间")
@@ -134,7 +134,7 @@ func endPrint() {
 func checkUpdate() {
 	timeout := 10 * time.Second
 	client := http.Client{Timeout: timeout}
-	res, err := client.Get("https://api.xiuer.pw/ver/cloudflarespeedtest.txt")
+	res, err := client.Get("https://api.xiu2.xyz/ver/cloudflarespeedtest.txt")
 	if err != nil {
 		return
 	}
diff --git a/task/download.go b/task/download.go
index a16a4bd2..33620b6b 100644
--- a/task/download.go
+++ b/task/download.go
@@ -63,6 +63,9 @@ func TestDownloadSpeed(ipSet utils.PingDelaySet) (speedSet utils.DownloadSpeedSe
 	if len(ipSet) < TestCount || MinSpeed > 0 { // 如果IP数组长度(IP数量) 小于下载测速数量（-dn），则次数修正为IP数
 		testNum = len(ipSet)
 	}
+	if testNum < TestCount {
+		TestCount = testNum
+	}
 
 	fmt.Printf("开始下载测速（下载速度下限：%.2f MB/s，下载测速数量：%d，下载测速队列：%d）：\n", MinSpeed, TestCount, testNum)
 	bar := utils.NewBar(TestCount)
@@ -88,9 +91,9 @@ func TestDownloadSpeed(ipSet utils.PingDelaySet) (speedSet utils.DownloadSpeedSe
 }
 
 func getDialContext(ip *net.IPAddr) func(ctx context.Context, network, address string) (net.Conn, error) {
-	fakeSourceAddr := ip.String() + ":443"
+	fakeSourceAddr := ip.String() + ":" + fmt.Sprintf("%d", TCPPort)
 	if IPv6 { // IPv6 需要加上 []
-		fakeSourceAddr = "[" + ip.String() + "]:443"
+		fakeSourceAddr = "[" + ip.String() + "]:" + fmt.Sprintf("%d", TCPPort)
 	}
 	return func(ctx context.Context, network, address string) (net.Conn, error) {
 		return (&net.Dialer{}).DialContext(ctx, network, fakeSourceAddr)