diff --git a/websocket/_http.py b/websocket/_http.py
index 5c4a638..7cd1da2 100644
--- a/websocket/_http.py
+++ b/websocket/_http.py
@@ -132,6 +132,9 @@ def _wrap_sni_socket(sock, sslopt, hostname, check_hostname):
         context.check_hostname = check_hostname
     if 'ciphers' in sslopt:
         context.set_ciphers(sslopt['ciphers'])
+    if 'cert_chain' in sslopt :
+        certfile,keyfile,password = sslopt['cert_chain']
+        context.load_cert_chain(certfile,keyfile,password)
 
     return context.wrap_socket(
         sock,