Annotation of libaitrpc/inc/aitrpc.h, revision 1.8.2.15

1.1       misho       1: /*************************************************************************
                      2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
                      3: *  by Michael Pounov <misho@openbsd-bg.org>
                      4: *
                      5: * $Author: misho $
1.8.2.15! misho       6: * $Id: aitrpc.h,v 1.8.2.14 2012/05/16 13:52:58 misho Exp $
1.1       misho       7: *
1.2       misho       8: **************************************************************************
                      9: The ELWIX and AITNET software is distributed under the following
                     10: terms:
                     11: 
                     12: All of the documentation and software included in the ELWIX and AITNET
                     13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
                     14: 
1.6       misho      15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
1.2       misho      16:        by Michael Pounov <misho@elwix.org>.  All rights reserved.
                     17: 
                     18: Redistribution and use in source and binary forms, with or without
                     19: modification, are permitted provided that the following conditions
                     20: are met:
                     21: 1. Redistributions of source code must retain the above copyright
                     22:    notice, this list of conditions and the following disclaimer.
                     23: 2. Redistributions in binary form must reproduce the above copyright
                     24:    notice, this list of conditions and the following disclaimer in the
                     25:    documentation and/or other materials provided with the distribution.
                     26: 3. All advertising materials mentioning features or use of this software
                     27:    must display the following acknowledgement:
                     28: This product includes software developed by Michael Pounov <misho@elwix.org>
                     29: ELWIX - Embedded LightWeight unIX and its contributors.
                     30: 4. Neither the name of AITNET nor the names of its contributors
                     31:    may be used to endorse or promote products derived from this software
                     32:    without specific prior written permission.
                     33: 
                     34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
                     35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     44: SUCH DAMAGE.
                     45: */
1.1       misho      46: #ifndef __AITRPC_H
                     47: #define __AITRPC_H
                     48: 
                     49: 
                     50: #include <assert.h>
                     51: #include <stdlib.h>
                     52: #include <string.h>
1.6       misho      53: #include <errno.h>
1.1       misho      54: #include <sys/types.h>
                     55: #include <sys/param.h>
1.2       misho      56: #if !defined(__NetBSD__)
1.1       misho      57: #include <sys/limits.h>
1.2       misho      58: #endif
1.1       misho      59: #include <sys/socket.h>
1.8.2.1   misho      60: #include <sys/queue.h>
1.4       misho      61: #include <aitio.h>
1.6       misho      62: #include <aitsched.h>
1.1       misho      63: 
                     64: 
1.8.2.1   misho      65: #define RPC_VERSION            4
1.1       misho      66: #define RPC_DEFPORT            2611
                     67: 
1.6       misho      68: /* RPC call request flags */
                     69: 
                     70: #define RPC_REPLY              0x0
                     71: #define RPC_NOREPLY            0x1
1.1       misho      72: 
                     73: /* RPC builtin registed calls */
                     74: 
1.8.2.14  misho      75: #define CALL_TAG_MAX           65535
1.8.2.5   misho      76: 
1.8.2.14  misho      77: #define CALL_BLOBSHUTDOWN      65530
                     78: #define CALL_BLOBCLIENTS       65529
                     79: #define CALL_BLOBVARS          65528
                     80: 
                     81: #define CALL_SRVSHUTDOWN       65534
                     82: #define CALL_SRVCLIENTS                65533
                     83: #define CALL_SRVCALLS          65532
                     84: #define CALL_SRVSESSIONS       65531
1.1       misho      85: 
                     86: 
                     87: /* RPC types */
                     88: 
                     89: typedef enum {
1.6       misho      90:        ok, error, no,                          /* for blob reply */
1.4       misho      91:        get, set, unset                         /* for blob request */
1.2       misho      92: } cmd_type_t;
                     93: 
1.1       misho      94: 
1.4       misho      95: #define RPC_CALLBACK_CHECK_INPUT(_f)   do { \
                     96:                                                assert((_f)); \
                     97:                                                if (!(_f)) { \
1.6       misho      98:                                                        rpc_SetErr(EINVAL, \
                     99:                                                                        "Invalid callback parameters ..."); \
1.2       misho     100:                                                        return -1; \
                    101:                                                } \
                    102:                                        } while (0)
1.4       misho     103: #define RPC_CALLBACK_CHK_ARGS(_f, _n)  do { \
                    104:                                                RPC_CALLBACK_CHECK_INPUT((_f)); \
1.5       misho     105:                                                if ((_f) && io_arraySize((_f)->func_vars) < _n) { \
1.6       misho     106:                                                        rpc_SetErr(EINVAL, \
                    107:                                                                        "Not enough number of arguments!"); \
1.1       misho     108:                                                        return -1; \
                    109:                                                } \
1.2       misho     110:                                        } while (0)
1.1       misho     111: 
                    112: 
                    113: /* RPC session identification */
                    114: 
                    115: typedef struct {
                    116:        uint8_t         sess_version;
                    117:        uint32_t        sess_program;
1.8.2.2   misho     118:        uint8_t         sess_process;
                    119: } __packed rpc_sess_t;         /* size == 6 bytes */
1.1       misho     120: 
                    121: 
                    122: /* Server managment RPC functions ... */
                    123: 
                    124: /* Network RPC packet - Client request */
                    125: 
                    126: struct tagRPCCall {
                    127:        rpc_sess_t      call_session;
1.6       misho     128: 
1.8.2.2   misho     129:        uint16_t        call_seq;
1.7       misho     130:        uint16_t        call_len;
1.8.2.2   misho     131:        uint16_t        call_crc;
1.1       misho     132: 
1.6       misho     133:        union {
                    134:                struct {
                    135:                        uint64_t        flags;
                    136:                }       call_req;
                    137:                struct {
                    138:                        int32_t         ret;
                    139:                        int32_t         eno;
                    140:                }       call_rep;
                    141:        };
1.1       misho     142: 
1.8.2.2   misho     143:        uint16_t        call_tag;
                    144:        uint16_t        call_argc;
                    145:        ait_val_t       call_argv[0];
1.8.2.4   misho     146: } __packed;                    /* size == 24 bytes */
1.1       misho     147: 
1.2       misho     148: /* Network BLOB packet - Header */
                    149: 
                    150: struct tagBLOBHdr {
                    151:        rpc_sess_t      hdr_session;
                    152:        uint8_t         hdr_cmd;
                    153:        uint32_t        hdr_var;
                    154:        uint32_t        hdr_len;
                    155:        uint32_t        hdr_ret;
1.6       misho     156:        uint16_t        hdr_crc;
                    157:        uint8_t         hdr_pad;
1.8.2.13  misho     158: } __packed;                    /* size == 22 bytes */
1.2       misho     159: 
1.1       misho     160: /* Network RPC client & server elements */
                    161: 
1.8.2.2   misho     162: /* RPC function registration element! */
                    163: typedef struct tagRPCFunc {
                    164:        ait_val_t               func_name;
                    165: 
                    166:        array_t                 *func_vars;
                    167: 
                    168:        void                    *func_parent;
                    169:        TAILQ_ENTRY(tagRPCFunc) func_node;
                    170: } rpc_func_t;
                    171: 
                    172: 
1.8.2.8   misho     173: /* BLOB register element */
                    174: typedef struct tagBLOB {
                    175:        uint32_t                blob_var;       /* BLOB id */
                    176: 
                    177:        size_t                  blob_len;       /* size of allocated BLOB data */
                    178:        void                    *blob_data;     /* mapped BLOB data */
                    179: 
                    180:        TAILQ_ENTRY(tagBLOB)    blob_node;
                    181: } rpc_blob_t;
                    182: 
                    183: 
1.1       misho     184: typedef struct {
1.8.2.1   misho     185:        int             cli_id;         /* slot id */
                    186:        int             cli_sock;       /* socket fd */
                    187:        io_sockaddr_t   cli_sa;         /* host address */
                    188:        ait_val_t       cli_buf;        /* network buffer */
1.8       misho     189: 
1.8.2.1   misho     190:        void            *cli_parent;    /* pointer to parent rpc_srv_t for server or to rpc_sess_t for client */
1.1       misho     191: } rpc_cli_t;
                    192: 
                    193: typedef struct {
1.8.2.1   misho     194:        rpc_sess_t                      srv_session;    /* RPC session registration info */
                    195:        int                             srv_netbuf;     /* size of network buffer */
1.1       misho     196: 
1.8.2.1   misho     197:        sched_root_task_t               *srv_root;      /* RPC server scheduler */
                    198:        intptr_t                        srv_kill;       /* Scheduler condition variable */
1.2       misho     199: 
1.8.2.1   misho     200:        rpc_cli_t                       srv_server;     /* RPC server socket */
                    201:        array_t                         *srv_clients;   /* connected rpc client sockets */
1.2       misho     202: 
1.8.2.1   misho     203:        TAILQ_HEAD(, tagRPCFunc)        srv_funcs;      /* RPC functions list */
1.2       misho     204: 
                    205:        struct {
1.8.2.10  misho     206:                sched_root_task_t               *root;          /* BLOB server scheduler */
                    207:                intptr_t                        kill;           /* BLOB server state: ==0 disable | !=0 enable */
                    208: 
1.8.2.8   misho     209:                ait_val_t                       dir;            /* BLOB states directory */
1.2       misho     210: 
1.8.2.8   misho     211:                rpc_cli_t                       server;         /* BLOB server socket */
                    212:                array_t                         *clients;       /* connected blob client sockets */
1.1       misho     213: 
1.8.2.8   misho     214:                TAILQ_HEAD(, tagBLOB)           blobs;          /* registered blob variables list */
1.8.2.1   misho     215:        }                               srv_blob;
1.1       misho     216: } rpc_srv_t;
                    217: 
                    218: 
1.2       misho     219: /* 
1.6       misho     220:  * (*rpc_callback_t)() - Callback type definition for RPC call in server process
                    221:  *
1.2       misho     222:  * @arg1 = current execution RPC call function
                    223:  * @arg2 = number of items in input array from call request
                    224:  * @arg3 = input array with values from RPC call execution request
                    225:  * return: -1 error or >-1 success execution
                    226:  */
1.4       misho     227: typedef int (*rpc_callback_t)(rpc_func_t *, int, array_t *);
1.1       misho     228: 
                    229: 
                    230: // -----------------------------------------------------------------------
                    231: 
                    232: /* Error support functions */
                    233: 
1.3       misho     234: // rpc_GetErrno() Get error code of last operation
                    235: inline int rpc_GetErrno();
                    236: // rpc_GetError() Get error text of last operation
                    237: inline const char *rpc_GetError();
1.1       misho     238: 
                    239: 
1.5       misho     240: /*
1.8.2.1   misho     241:  * rpc_chkPktSession() - Check RPC session
1.6       misho     242:  *
1.5       misho     243:  * @p = packet session
                    244:  * @s = active session
1.8.2.1   misho     245:  * return: -1, 1, 2, 3 are errors or 0 ok
1.5       misho     246:  */
                    247: inline int rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s);
                    248: /*
1.8.2.1   misho     249:  * rpc_addPktSession() - Prepare session into network format
1.6       misho     250:  *
1.5       misho     251:  * @p = packet session
1.8.2.1   misho     252:  * @s = host session
1.5       misho     253:  * return: -1 error or 0 ok
                    254:  */
                    255: inline int rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s);
1.8.2.1   misho     256: /*
                    257:  * rpc_register_srvServices() - Register internal service functions
                    258:  *
                    259:  * @srv = RPC server instance
                    260:  * return: -1 error or 0 ok
                    261:  */
                    262: int rpc_register_srvServices(rpc_srv_t * __restrict srv);
1.8.2.6   misho     263: /*
                    264:  * rpc_register_blobServices() - Register internal service functions
                    265:  *
                    266:  * @srv = RPC server instance
                    267:  * return: -1 error or 0 ok
                    268:  */
                    269: int rpc_register_blobServices(rpc_srv_t * __restrict srv);
1.5       misho     270: 
                    271: 
1.1       misho     272: /* RPC Server side functions */
                    273: 
                    274: /*
1.6       misho     275:  * rpc_srv_initServer() - Init & create RPC Server
                    276:  *
1.1       misho     277:  * @regProgID = ProgramID for authentication & recognition
                    278:  * @regProcID = ProcessID for authentication & recognition
                    279:  * @concurentClients = Concurent clients at same time to this server
1.4       misho     280:  * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
1.3       misho     281:  * @csHost = Host name or address for bind server, if NULL any address
1.1       misho     282:  * @Port = Port for bind server, if Port == 0 default port is selected
                    283:  * return: NULL == error or !=NULL bind and created RPC server instance
                    284:  */
1.8.2.2   misho     285: rpc_srv_t *rpc_srv_initServer(unsigned int regProgID, unsigned char regProcID, 
                    286:                int concurentClients, int netBuf, 
                    287:                const char *csHost, unsigned short Port);
1.1       misho     288: /*
1.6       misho     289:  * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
                    290:  *
1.5       misho     291:  * @psrv = RPC Server instance
1.1       misho     292:  * return: none
                    293:  */
1.5       misho     294: void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);
1.1       misho     295: /*
1.6       misho     296:  * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
                    297:  *
1.1       misho     298:  * @srv = RPC Server instance
                    299:  * return: -1 error or 0 ok, infinite loop ...
                    300:  */
1.4       misho     301: int rpc_srv_loopServer(rpc_srv_t * __restrict srv);
                    302: #define rpc_srv_execServer(_srv, _sync)        do { assert((_srv)); pthread_t __tid; \
1.8.2.10  misho     303:                                                if (!(_srv)->srv_kill) { \
                    304:                                                        pthread_create(&__tid, NULL, (void*(*)(void*)) \
                    305:                                                                        rpc_srv_loopServer, (_srv)); \
                    306:                                                        if ((_sync)) \
                    307:                                                                pthread_join(__tid, (void**) (_sync)); \
                    308:                                                        else \
                    309:                                                                pthread_detach(__tid); \
                    310:                                                } } while (0)
1.1       misho     311: 
                    312: /*
1.6       misho     313:  * rpc_srv_initBLOBServer() - Init & create BLOB Server
                    314:  *
1.3       misho     315:  * @srv = RPC server instance
1.2       misho     316:  * @Port = Port for bind server, if Port == 0 default port is selected
                    317:  * @diskDir = Disk place for BLOB file objects
                    318:  * return: -1 == error or 0 bind and created BLOB server instance
                    319:  */
                    320: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir);
                    321: /*
1.6       misho     322:  * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
                    323:  *
1.2       misho     324:  * @srv = RPC Server instance
                    325:  * return: none
                    326:  */
                    327: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
                    328: /*
1.6       misho     329:  * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
                    330:  *
1.2       misho     331:  * @srv = RPC Server instance
                    332:  * return: -1 error or 0 ok, infinite loop ...
                    333:  */
1.8.2.10  misho     334: int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);
1.4       misho     335: #define rpc_srv_execBLOBServer(_srv)   do { assert((_srv)); pthread_t __tid; \
1.8.2.10  misho     336:                                                if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \
1.4       misho     337:                                                        pthread_create(&__tid, NULL, (void*(*)(void*)) \
1.8.2.10  misho     338:                                                                        rpc_srv_loopBLOBServer, (_srv)); \
1.4       misho     339:                                                        pthread_detach(__tid); \
                    340:                                                } \
                    341:                                        } while (0)
1.2       misho     342: 
                    343: /*
1.6       misho     344:  * rpc_srv_registerCall() - Register call to RPC server
                    345:  *
1.1       misho     346:  * @srv = RPC Server instance
1.8.2.4   misho     347:  * @tag = Function tag
                    348:  * @funcaddr = Function address
                    349:  * @args = Number of return function arguments
                    350:  * return: -1 error, 0 already registered tag or 1 register ok
1.1       misho     351:  */
1.8.2.4   misho     352: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, unsigned short tag, 
                    353:                void *funcaddr, unsigned short args);
1.1       misho     354: /*
1.6       misho     355:  * rpc_srv_unregisterCall() - Unregister call from RPC server
                    356:  *
1.1       misho     357:  * @srv = RPC Server instance
1.8.2.4   misho     358:  * @tag = Function tag
1.1       misho     359:  * return: -1 error, 0 not found call, 1 unregister ok
                    360:  */
1.8.2.4   misho     361: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, unsigned short tag);
1.1       misho     362: /*
1.8.2.4   misho     363:  * rpc_srv_getCall()  - Get registered call from RPC server
1.6       misho     364:  *
1.1       misho     365:  * @srv = RPC Server instance
                    366:  * @tag = tag for function
                    367:  * return: NULL not found call, !=NULL return call
                    368:  */
1.8.2.2   misho     369: inline rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag);
1.1       misho     370: /*
1.6       misho     371:  * rpc_srv_execCall() - Execute registered call from RPC server
                    372:  *
1.1       misho     373:  * @call = Register RPC call
                    374:  * @rpc = IN RPC call structure
1.4       misho     375:  * @args = IN RPC calling arguments from RPC client
1.1       misho     376:  * return: -1 error, !=-1 ok
                    377:  */
1.2       misho     378: int rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc, 
1.4       misho     379:                array_t * __restrict args);
1.1       misho     380: 
                    381: 
                    382: /*
1.8.2.9   misho     383:  * rpc_srv_blobCreate() - Create and map blob to memory region and return object
1.6       misho     384:  *
1.2       misho     385:  * @srv = RPC Server instance
                    386:  * @len = BLOB length object
                    387:  * return: NULL error or !=NULL allocated BLOB object
                    388:  */
                    389: inline rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len);
                    390: /*
1.6       misho     391:  * rpc_srv_blobMap() - Map blob to memory region 
                    392:  *
1.2       misho     393:  * @srv = RPC Server instance
                    394:  * @blob = Map to this BLOB element
                    395:  * return: -1 error or 0 ok
                    396:  */
                    397: inline int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
                    398: /*
1.6       misho     399:  * rpc_srv_blobUnmap() - Unmap blob memory region 
                    400:  *
1.2       misho     401:  * @blob = Mapped BLOB element
                    402:  * return: none
                    403:  */
                    404: inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
                    405: /*
1.6       misho     406:  * rpc_srv_blobFree() - Free blob from disk & memory
                    407:  *
1.2       misho     408:  * @srv = RPC Server instance
                    409:  * @blob = Mapped BLOB element
                    410:  * return: -1 error or 0 ok
                    411:  */
                    412: inline int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
                    413: 
                    414: /*
1.6       misho     415:  * rpc_srv_registerBLOB() - Register new BLOB to server
                    416:  *
1.2       misho     417:  * @srv = RPC Server instance
                    418:  * @len = BLOB length
                    419:  * return: NULL error or new registered BLOB
                    420:  */
                    421: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len);
                    422: /*
1.6       misho     423:  * rpc_srv_unregisterBLOB() - Unregister BLOB from server
                    424:  *
1.2       misho     425:  * @srv = RPC Server instance
                    426:  * @var = BLOB Variable for unregister
                    427:  * return: -1 error, 0 not found call, 1 unregister ok
                    428:  */
                    429: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
                    430: /*
1.6       misho     431:  * rpc_srv_getBLOB() - Get registered BLOB 
                    432:  *
1.2       misho     433:  * @srv = RPC Server instance
                    434:  * @var = hash for variable
                    435:  * return: NULL not found, !=NULL return blob var
                    436:  */
                    437: inline rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
                    438: 
                    439: /*
1.6       misho     440:  * rpc_srv_sendBLOB() - Send mapped BLOB to client
                    441:  *
1.2       misho     442:  * @cli = Client instance
                    443:  * @blob = Mapped BLOB element
                    444:  * return: -1 error, 0 ok
                    445:  */
                    446: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
                    447: /*
1.6       misho     448:  * rpc_srv_recvBLOB() - Receive BLOB from client
                    449:  *
1.2       misho     450:  * @cli = Client instance
                    451:  * @blob = Mapped BLOB element
                    452:  * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
                    453:  */
                    454: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
                    455: 
1.4       misho     456: /* CLIENT part of functions */
                    457: 
1.2       misho     458: /*
1.6       misho     459:  * rpc_cli_sendBLOB() - Send BLOB to server
                    460:  *
1.2       misho     461:  * @cli = Client instance
                    462:  * @var = BLOB variable
                    463:  * @data = BLOB data
                    464:  * return: -1 error, 0 ok, 1 remote error
                    465:  */
1.4       misho     466: int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void * __restrict data);
1.2       misho     467: /*
1.6       misho     468:  * rpc_cli_recvBLOB() - Receive BLOB from server
                    469:  *
1.2       misho     470:  * @cli = Client instance
                    471:  * @var = BLOB variable
                    472:  * @data = BLOB data, must be free after use!
                    473:  * return: -1 error, 0 ok, 1 remote error
                    474:  */
1.4       misho     475: int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data);
1.2       misho     476: /*
1.6       misho     477:  * rpc_cli_delBLOB() - Delete BLOB from server
                    478:  *
1.2       misho     479:  * @cli = Client instance
                    480:  * @var = BLOB variable
                    481:  * return: -1 error, 0 ok, 1 remote error
                    482:  */
1.4       misho     483: int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var);
1.2       misho     484: /*
1.6       misho     485:  * rpc_cli_getBLOB() - Receive BLOB from server and Delete after that.
                    486:  *
1.2       misho     487:  * @cli = Client instance
                    488:  * @var = BLOB variable
                    489:  * @data = BLOB data, must be free after use!
                    490:  * return: -1 error, 0 ok, >0 remote error
                    491:  */
1.6       misho     492: inline int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, 
                    493:                void ** __restrict data);
1.2       misho     494: 
                    495: 
1.1       misho     496: /* RPC Client side functions */
                    497: 
                    498: /*
1.6       misho     499:  * rpc_cli_openClient() - Connect to RPC Server
                    500:  *
1.1       misho     501:  * @ProgID = ProgramID for RPC session request
                    502:  * @ProcID = ProcessID for RPC session request
1.4       misho     503:  * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
1.1       misho     504:  * @csHost = Host name or IP address for bind server
                    505:  * @Port = Port for bind server, if Port == 0 default port is selected
                    506:  * return: NULL == error or !=NULL connection to RPC server established
                    507:  */
1.8.2.11  misho     508: rpc_cli_t *rpc_cli_openClient(unsigned int ProgID, unsigned char ProcID, int netBuf, 
1.8.2.15! misho     509:                const char *csHost, unsigned short Port);
1.1       misho     510: /*
1.6       misho     511:  * rpc_cli_closeClient() - Close connection to RPC server and free resources
                    512:  *
1.1       misho     513:  * @cli = RPC Client session
                    514:  * return: none
                    515:  */
1.8.2.11  misho     516: void rpc_cli_closeClient(rpc_cli_t ** __restrict cli);
1.1       misho     517: /*
1.6       misho     518:  * rpc_cli_execCall() - Execute RPC call
                    519:  *
1.1       misho     520:  * @cli = RPC Client session
1.7       misho     521:  * @noreply = We not want RPC reply
1.8.2.11  misho     522:  * @tag = Function tag for execution
1.3       misho     523:  * @in_vars = IN RPC call array of rpc values
1.4       misho     524:  * @out_vars = OUT returned array of rpc values, must be free after use with rpc_cli_freeVals()
1.1       misho     525:  * return: -1 error or != -1 ok result
                    526:  */
1.8.2.11  misho     527: int rpc_cli_execCall(rpc_cli_t *cli, int noreply, u_short tag, 
1.4       misho     528:                array_t * __restrict in_vars, array_t ** __restrict out_vars);
1.1       misho     529: 
                    530: 
1.2       misho     531: /*
1.6       misho     532:  * rpc_cli_openBLOBClient() - Connect to BLOB Server
                    533:  *
1.2       misho     534:  * @rpccli = RPC Client session
                    535:  * @Port = Port for bind server, if Port == 0 default port is selected
                    536:  * return: NULL == error or !=NULL connection to BLOB server established
                    537:  */
                    538: rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port);
                    539: /*
1.6       misho     540:  * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
                    541:  *
1.2       misho     542:  * @cli = BLOB Client session
                    543:  * return: none
                    544:  */
1.8.2.11  misho     545: void rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli);
1.2       misho     546: 
                    547: 
1.1       misho     548: #endif

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