/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * Echo Virtual Channel Extension

 *

 * Copyright 2014 Vic Lee

 * Copyright 2015 Thincast Technologies GmbH

 * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *	 http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifndef FREERDP_CHANNEL_ECHO_SERVER_H

#define FREERDP_CHANNEL_ECHO_SERVER_H

#include <freerdp/channels/wtsvc.h>

typedef enum ECHO_SERVER_OPEN_RESULT

{

	ECHO_SERVER_OPEN_RESULT_OK = 0,

	ECHO_SERVER_OPEN_RESULT_CLOSED = 1,

	ECHO_SERVER_OPEN_RESULT_NOTSUPPORTED = 2,

	ECHO_SERVER_OPEN_RESULT_ERROR = 3

} ECHO_SERVER_OPEN_RESULT;

typedef struct _echo_server_context echo_server_context;

typedef UINT (*psEchoServerOpen)(echo_server_context* context);

typedef UINT (*psEchoServerClose)(echo_server_context* context);

typedef BOOL (*psEchoServerRequest)(echo_server_context* context, const BYTE* buffer,

                                    UINT32 length);

typedef UINT (*psEchoServerOpenResult)(echo_server_context* context,

                                       ECHO_SERVER_OPEN_RESULT result);

typedef UINT (*psEchoServerResponse)(echo_server_context* context, const BYTE* buffer,

                                     UINT32 length);

struct _echo_server_context

{

	HANDLE vcm;

	/* Server self-defined pointer. */

	void* data;

	/*** APIs called by the server. ***/

	/**

	 * Open the echo channel.

	 */

	psEchoServerOpen Open;

	/**

	 * Close the echo channel.

	 */

	psEchoServerClose Close;

	/**

	 * Send echo request PDU.

	 */

	psEchoServerRequest Request;

	/*** Callbacks registered by the server. ***/

	/**

	 * Indicate whether the channel is opened successfully.

	 */

	psEchoServerOpenResult OpenResult;

	/**

	 * Receive echo response PDU.

	 */

	psEchoServerResponse Response;

	rdpContext* rdpcontext;

};

#ifdef __cplusplus

extern "C"

{

#endif

	FREERDP_API echo_server_context* echo_server_context_new(HANDLE vcm);

	FREERDP_API void echo_server_context_free(echo_server_context* context);

#ifdef __cplusplus

}

#endif

#endif /* FREERDP_CHANNEL_ECHO_SERVER_H */