Reintegrate certificate selection in HttpNetworkTransaction DoLoop

third_party/tlslite/tlslite/messages.py

Index: third_party/tlslite/tlslite/messages.py
diff --git a/third_party/tlslite/tlslite/messages.py b/third_party/tlslite/tlslite/messages.py
index fb4cc2173bd50443de9d9d18dbc5b43feb9c3271..dc6ed324113d9daa54185c85d568f436c061a529 100644
--- a/third_party/tlslite/tlslite/messages.py
+++ b/third_party/tlslite/tlslite/messages.py
@@ -346,7 +346,9 @@ class Certificate(HandshakeMsg):
 class CertificateRequest(HandshakeMsg):
     def __init__(self):
         self.contentType = ContentType.handshake
-        self.certificate_types = []
+        #Apple's Secure Transport library rejects empty certificate_types, so
+        #default to rsa_sign.
+        self.certificate_types = [ClientCertificateType.rsa_sign]
         self.certificate_authorities = []
 
     def create(self, certificate_types, certificate_authorities):
@@ -579,4 +581,4 @@ class ApplicationData(Msg):
         return self
 
     def write(self):
-        return self.bytes
+        return self.bytes