ObjFW  Diff

	if (!_initialized)
		@throw [OFNotOpenException exceptionWithObject: self];

	if (_handshakeDone)
		gnutls_bye(_session, GNUTLS_SHUT_WR);

	gnutls_deinit(_session);
	_initialized = false;
	_initialized = _handshakeDone = false;

	[_host release];
	_host = nil;

	[super close];
}

	if (_verifiesCertificates)
		gnutls_session_set_verify_cert(_session, _host.UTF8String, 0);

	status = gnutls_handshake(_session);

	if (status == GNUTLS_E_INTERRUPTED || status == GNUTLS_E_AGAIN) {
		if (gnutls_record_get_direction(_session) == 1)
			[_underlyingStream
			[_underlyingStream asyncWriteData: [OFData data]
			    asyncWriteData: [OFData dataWithItems: "" count: 0]
			       runLoopMode: runLoopMode];
					      runLoopMode: runLoopMode];
		else
			[_underlyingStream asyncReadIntoBuffer: (void *)""
							length: 0
						   runLoopMode: runLoopMode];

		[_delegate retain];
		return;

		    didPerformClientHandshakeWithHost: host
					    exception: exception];
}

-      (bool)stream: (OFStream *)stream
  didReadIntoBuffer: (void *)buffer
	     length: (size_t)length
	  exception: (nullable id)exception
	  exception: (id)exception
{
	if (exception == nil) {
		int status = gnutls_handshake(_session);

		if (status == GNUTLS_E_INTERRUPTED ||
		    status == GNUTLS_E_AGAIN) {
			if (gnutls_record_get_direction(_session) == 1) {
				OFData *data = [OFData dataWithItems: ""
							       count: 0];
				OFRunLoopMode runLoopMode =
				    [OFRunLoop currentRunLoop].currentMode;
				[_underlyingStream asyncWriteData: data
				[_underlyingStream asyncWriteData: [OFData data]
						      runLoopMode: runLoopMode];
				return false;
			} else
				return true;
		}

		if (status == GNUTLS_E_SUCCESS)