tpdu.c File Reference

#include <freerdp/config.h>
#include <stdio.h>
#include <winpr/print.h>
#include <freerdp/log.h>
#include "tpdu.h"

Macros
#define	TAG   FREERDP_TAG("core")

Functions
static BOOL	tpdu_write_header (wStream *s, UINT16 length, BYTE code)
BOOL	tpdu_read_header (wStream *s, BYTE *code, BYTE *li, UINT16 tpktlength)
BOOL	tpdu_read_connection_request (wStream *s, BYTE *li, UINT16 tpktlength)
BOOL	tpdu_write_connection_request (wStream *s, UINT16 length)
BOOL	tpdu_read_connection_confirm (wStream *s, BYTE *li, UINT16 tpktlength)
BOOL	tpdu_write_connection_confirm (wStream *s, UINT16 length)
BOOL	tpdu_write_disconnect_request (wStream *s, UINT16 length)
BOOL	tpdu_write_data (wStream *s)
BOOL	tpdu_read_data (wStream *s, UINT16 *LI, UINT16 tpktlength)
const char *	tpdu_type_to_string (int type)

Macro Definition Documentation

TAG

#define TAG   FREERDP_TAG("core")

FreeRDP: A Remote Desktop Protocol Implementation X.224 Transport Protocol Data Units (TPDUs)

Copyright 2011 Marc-Andre Moreau marca.nosp@m.ndre.nosp@m..more.nosp@m.au@g.nosp@m.mail..nosp@m.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.

Function Documentation

tpdu_read_connection_confirm()

BOOL tpdu_read_connection_confirm	(	wStream *	s,
		BYTE *	li,
		UINT16	tpktlength
	)

Read Connection Confirm TPDU.

Parameters

s

stream

Returns

length indicator (LI)

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tpdu_read_connection_request()

BOOL tpdu_read_connection_request	(	wStream *	s,
		BYTE *	li,
		UINT16	tpktlength
	)

Read Connection Request TPDU

Parameters

s

stream

Returns

length indicator (LI)

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tpdu_read_data()

BOOL tpdu_read_data	(	wStream *	s,
		UINT16 *	LI,
		UINT16	tpktlength
	)

Read Data TPDU.

Parameters

s

stream

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tpdu_read_header()

BOOL tpdu_read_header	(	wStream *	s,
		BYTE *	code,
		BYTE *	li,
		UINT16	tpktlength
	)

Read TPDU header.

Parameters

s	stream
code	variable pointer to receive TPDU code

Returns

TPDU length indicator (LI)

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tpdu_type_to_string()

const char* tpdu_type_to_string

(

int

type

)

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tpdu_write_connection_confirm()

BOOL tpdu_write_connection_confirm	(	wStream *	s,
		UINT16	length
	)

Write Connection Confirm TPDU.

Parameters

s	stream
length	TPDU length

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tpdu_write_connection_request()

BOOL tpdu_write_connection_request	(	wStream *	s,
		UINT16	length
	)

Write Connection Request TPDU.

Parameters

s	stream
length	TPDU length

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tpdu_write_data()

BOOL tpdu_write_data

(

wStream *

s

)

Write Data TPDU.

Parameters

s

stream

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tpdu_write_disconnect_request()

BOOL tpdu_write_disconnect_request	(	wStream *	s,
		UINT16	length
	)

Write Disconnect Request TPDU.

Parameters

s	stream
length	TPDU length

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tpdu_write_header()

BOOL tpdu_write_header ( wStream *  s, UINT16  length, BYTE  code  )

static

TPDUs are defined in:

http://www.itu.int/rec/T-REC-X.224-199511-I/ X.224: Information technology - Open Systems Interconnection - Protocol for providing the connection-mode transport service

RDP uses only TPDUs of class 0, the "simple class" defined in section 8 of X.224

  TPDU Header

____________________ byte | | | LI | 1 |____________________| | | | Code | 2 |____________________| | | | | 3 |_______DST-REF______| | | | | 4 |____________________| | | | | 5 |_______SRC-REF______| | | | | 6 |____________________| | | | Class | 7 |____________________| | ... |

Write TDPU header.

Parameters

s	stream
length	length
code	TPDU code

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