diff options
| -rw-r--r-- | mitmproxy/protocol/tls.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mitmproxy/protocol/tls.py b/mitmproxy/protocol/tls.py index 6913396d..f014142b 100644 --- a/mitmproxy/protocol/tls.py +++ b/mitmproxy/protocol/tls.py @@ -562,5 +562,6 @@ class TlsLayer(Layer): # Some applications don't consider the CN and expect the hostname to be in the SANs. # For example, Thunderbird 38 will display a warning if the remote host is only the CN. - sans.add(host) + if host: + sans.add(host) return self.config.certstore.get_cert(host, list(sans)) |