新增重试不同的服务地址

dial.go

@@ -0,0 +1,29 @@
+package tdx
+
+import (
+	"context"
+	"github.com/injoyai/ios"
+	"net"
+	"strings"
+	"time"
+)
+
+func NewHostDial(hosts []string, timeout time.Duration) ios.DialFunc {
+	if len(hosts) == 0 {
+		hosts = Hosts
+	}
+	index := 0
+
+	return func(ctx context.Context) (ios.ReadWriteCloser, string, error) {
+		defer func() { index++ }()
+		if index >= len(hosts) {
+			index = 0
+		}
+		addr := hosts[index]
+		if !strings.Contains(addr, ":") {
+			addr += ":7709"
+		}
+		c, err := net.DialTimeout("tcp", addr, timeout)
+		return c, hosts[index], err
+	}
+}