154 lines
8.9 KiB
OpenEdge ABL
154 lines
8.9 KiB
OpenEdge ABL
/****************************************************************************/
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/* Header: pchannel.h */
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/* */
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/* Purpose: Virtual Channel protocol header - VC stuff common to Client & */
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/* Server */
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/* */
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/* Copyright(C) Microsoft Corporation 1999 */
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/* */
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/****************************************************************************/
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#ifndef _H_PCHANNEL
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#define _H_PCHANNEL
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/****************************************************************************/
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/* Maximum amount of data that is sent in one operation. Data larger than */
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/* this is segmented into chunks of this size and sent as multiple */
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/* operations. */
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/****************************************************************************/
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#define CHANNEL_CHUNK_LENGTH 1600
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#define CHANNEL_PDU_LENGTH (CHANNEL_CHUNK_LENGTH + sizeof(CHANNEL_PDU_HEADER))
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/****************************************************************************/
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/* Header flags (also passed to VirtualChannelOpenEventFn) */
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/****************************************************************************/
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#define CHANNEL_FLAG_FIRST 0x01
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#define CHANNEL_FLAG_LAST 0x02
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#define CHANNEL_FLAG_ONLY (CHANNEL_FLAG_FIRST | CHANNEL_FLAG_LAST)
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#define CHANNEL_FLAG_MIDDLE 0
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#define CHANNEL_FLAG_FAIL 0x100
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/****************************************************************************/
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/* Header flags (internal protocol use only) */
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/****************************************************************************/
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#define CHANNEL_FLAG_SHOW_PROTOCOL 0x10
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#define CHANNEL_FLAG_SUSPEND 0x20
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#define CHANNEL_FLAG_RESUME 0x40
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#define CHANNEL_FLAG_SHADOW_PERSISTENT 0x80
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/****************************************************************************/
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/* Virtual Channel options, passed by Client on VirtualChannelOpen */
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/****************************************************************************/
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/****************************************************************************/
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/* Application is initialized. If this flag is not set, a virtual channel */
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/* is not established for this application */
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/****************************************************************************/
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#define CHANNEL_OPTION_INITIALIZED 0x80000000
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/****************************************************************************/
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/* Encrypt according to RDP data encryption (ie if RDP data is encrypted, */
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/* do so for this virtual channel too) */
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/****************************************************************************/
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#define CHANNEL_OPTION_ENCRYPT_RDP 0x40000000
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/****************************************************************************/
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/* Encrypt Server to Client data (ignored if CHANNEL_OPTION_ENCRYPT_RDP is */
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/* set) */
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/****************************************************************************/
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#define CHANNEL_OPTION_ENCRYPT_SC 0x20000000
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/****************************************************************************/
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/* Encrypt Client to Server data (ignored if CHANNEL_OPTION_ENCRYPT_RDP is */
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/* set) */
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/****************************************************************************/
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#define CHANNEL_OPTION_ENCRYPT_CS 0x10000000
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/****************************************************************************/
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/* Send data at high priority (not recommended, as this may impact RDP */
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/* performance) */
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/****************************************************************************/
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#define CHANNEL_OPTION_PRI_HIGH 0x08000000
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/****************************************************************************/
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/* Send data at medium priority */
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/****************************************************************************/
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#define CHANNEL_OPTION_PRI_MED 0x04000000
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/****************************************************************************/
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/* Send data at low priority */
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/****************************************************************************/
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#define CHANNEL_OPTION_PRI_LOW 0x02000000
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/****************************************************************************/
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/* Compress data in this virtual channel if RDP data compression is */
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/* configured for this connection */
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/****************************************************************************/
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#define CHANNEL_OPTION_COMPRESS_RDP 0x00800000
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/****************************************************************************/
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/* Compress data in this virtual channel, irrespective of RDP data */
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/* compression (ignored if CHANNEL_OPTION_COMPRESS_RDP is set) */
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/****************************************************************************/
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#define CHANNEL_OPTION_COMPRESS 0x00400000
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/****************************************************************************/
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/* Show Server addins the full Virtual Channel protocol. This option */
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/* affects how data passed to VirtualChannelWrite is presented to Server */
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/* addins. */
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/* */
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/* - If this option is set, Server addins see the full Virtual Channel */
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/* protocol, including CHANNEL_PDU_HEADER (below). */
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/* */
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/* -If this option is not set, Server addins see just the data passed to */
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/* VirtualChannelWrite */
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/****************************************************************************/
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#define CHANNEL_OPTION_SHOW_PROTOCOL 0x00200000
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/****************************************************************************/
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/* Specify that this channel is persistent accross remote control */
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/* transitions. */
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/****************************************************************************/
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#define CHANNEL_OPTION_REMOTE_CONTROL_PERSISTENT 0x00100000
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/****************************************************************************/
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/* Maximum number and size of channel names */
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/****************************************************************************/
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#define CHANNEL_MAX_COUNT 30
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#define CHANNEL_NAME_LEN 7
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/****************************************************************************/
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/* Structure: CHANNEL_DEF */
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/* */
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/* Description: Client to Server virtual channel information */
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/* - name channel name */
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/* - options channel options (a combination of the CHANNEL_OPTION */
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/* constants above) */
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/****************************************************************************/
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typedef struct tagCHANNEL_DEF
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{
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char name[CHANNEL_NAME_LEN + 1];
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ULONG options;
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} CHANNEL_DEF;
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typedef CHANNEL_DEF UNALIGNED FAR *PCHANNEL_DEF;
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typedef PCHANNEL_DEF UNALIGNED FAR *PPCHANNEL_DEF;
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/****************************************************************************/
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/* Header of Virtual Channel PDUs */
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/****************************************************************************/
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/****************************************************************************/
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/* Structure: CHANNEL_PDU_HEADER */
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/* */
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/* Description: Header sent on Virtual Channel PDUs */
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/****************************************************************************/
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typedef struct tagCHANNEL_PDU_HEADER
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{
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UINT32 length; /* Length of data including header */
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UINT32 flags; /* CHANNEL_FLAG_xxx flags */
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} CHANNEL_PDU_HEADER, FAR * PCHANNEL_PDU_HEADER;
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/****************************************************************************/
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#endif /* _H_PCHANNEL */
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