Properly handle alerts from the peer in SSL_read.

third_party/tlslite/tlslite/tlsconnection.py

Index: third_party/tlslite/tlslite/tlsconnection.py
diff --git a/third_party/tlslite/tlslite/tlsconnection.py b/third_party/tlslite/tlslite/tlsconnection.py
index 0e13a78020a5df0c372112baa226af89bf3037b9..0a85d3cc98481d3e3f8afd1f8f4186ac5ce25bed 100644
--- a/third_party/tlslite/tlslite/tlsconnection.py
+++ b/third_party/tlslite/tlslite/tlsconnection.py
@@ -1221,6 +1221,10 @@ class TLSConnection(TLSRecordLayer):
             ocspResponse=ocspResponse)
         for result in self._handshakeWrapperAsync(handshaker, checker):
             yield result
+        if settings and settings.alertAfterHandshake:
+            for result in self._sendError(AlertDescription.internal_error,
+                                          "Spurious alert"):
+                yield result
 
 
     def _handshakeServerAsyncHelper(self, verifierDB,