diff --git a/code/default/download.md b/code/default/download.md
index 99c9cdb6b0..03eb5bb811 100644
--- a/code/default/download.md
+++ b/code/default/download.md
@@ -10,9 +10,9 @@
 
 
 
-测试版(Test version 4.12.0)：  
-[Win10 版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.0/XX-Net-win10-4.12.0.7z)   
-[Win7 版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.0/XX-Net-win7-4.12.0.7z)   
-[Mac 版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.0/XX-Net-mac-4.12.0.7z)  
-[Linux 版下载](https://github.com/XX-net/XX-Net/archive/4.12.0.zip)  
-[Android版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.0/XX-Net-4.12.0.apk)  
+测试版(Test version 4.12.1)：  
+[Win10 版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.1/XX-Net-win10-4.12.1.7z)   
+[Win7 版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.1/XX-Net-win7-4.12.1.7z)   
+[Mac 版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.1/XX-Net-mac-4.12.1.7z)  
+[Linux 版下载](https://github.com/XX-net/XX-Net/archive/4.12.1.zip)  
+[Android版下载](https://github.com/XX-net/XX-Net/releases/download/4.12.1/XX-Net-4.12.1.apk)  
diff --git a/code/default/lib/noarch/front_base/tlslite_wrap.py b/code/default/lib/noarch/front_base/tlslite_wrap.py
index 24591aa46d..e47757adf9 100644
--- a/code/default/lib/noarch/front_base/tlslite_wrap.py
+++ b/code/default/lib/noarch/front_base/tlslite_wrap.py
@@ -78,11 +78,16 @@ def get_cert(self):
         from asn1crypto.x509 import Certificate
         cert = Certificate.load(cert)
 
+        try:
+            altName = cert.subject_alt_name_value.native
+        except:
+            altName = []
+
         self.peer_cert = {
             "cert": cert,
             "issuer_commonname": cert.issuer.human_friendly,
             "commonName": "",
-            "altName": cert.subject_alt_name_value.native
+            "altName": altName
         }
 
         return self.peer_cert
@@ -157,6 +162,7 @@ def __init__(self, logger, ca_certs=None, cipher_suites=None, support_http2=True
         self.settings = HandshakeSettings()
 
         self.support_alpn_npn = None
+        self.alpn = []
         if support_http2:
             self.alpn = [
                 bytearray(b"h2"),
diff --git a/code/default/version.txt b/code/default/version.txt
index bcd250ed08..2efddba74b 100644
--- a/code/default/version.txt
+++ b/code/default/version.txt
@@ -1 +1 @@
-4.12.0
\ No newline at end of file
+4.12.1
\ No newline at end of file