Send the close_notify alert in TlsTransport with OpenSSL

src/impl/dtlstransport.cpp

@@ -393,8 +393,7 @@ DtlsTransport::DtlsTransport(shared_ptr<IceTransport> lower, certificate_ptr cer
 
 		SSL_CTX_set_min_proto_version(mCtx, DTLS1_VERSION);
 		SSL_CTX_set_read_ahead(mCtx, 1);
-		//sent the dtls close_notify alert
-		//SSL_CTX_set_quiet_shutdown(mCtx, 1);
+		SSL_CTX_set_quiet_shutdown(mCtx, 0); // send the close_notify alert
 		SSL_CTX_set_info_callback(mCtx, InfoCallback);
 
 		SSL_CTX_set_verify(mCtx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,

src/impl/tlstransport.cpp

@@ -325,7 +325,7 @@ TlsTransport::TlsTransport(shared_ptr<TcpTransport> lower, optional<string> host
 		SSL_CTX_set_options(mCtx, SSL_OP_NO_SSLv3 | SSL_OP_NO_RENEGOTIATION);
 		SSL_CTX_set_min_proto_version(mCtx, TLS1_VERSION);
 		SSL_CTX_set_read_ahead(mCtx, 1);
-		SSL_CTX_set_quiet_shutdown(mCtx, 1);
+		SSL_CTX_set_quiet_shutdown(mCtx, 0); // send the close_notify alert
 		SSL_CTX_set_info_callback(mCtx, InfoCallback);
 		SSL_CTX_set_verify(mCtx, SSL_VERIFY_NONE, NULL);