Annotation of libaitrpc/inc/aitrpc.h, revision 1.8.2.17

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 $
1.8.2.17! misho       6: * $Id: aitrpc.h,v 1.8.2.16 2012/05/17 07:53:03 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: 
1.8.2.17! misho      77: #define CALL_SRVPING           65534
1.8.2.16  misho      78: 
                     79: #define CALL_SRVSHUTDOWN       65533
                     80: #define CALL_SRVCLIENTS                65532
                     81: #define CALL_SRVCALLS          65531
                     82: #define CALL_SRVSESSIONS       65530
                     83: 
                     84: #define CALL_BLOBSHUTDOWN      65529
                     85: #define CALL_BLOBCLIENTS       65528
                     86: #define CALL_BLOBVARS          65527
1.1       misho      87: 
                     88: 
                     89: /* RPC types */
                     90: 
                     91: typedef enum {
1.6       misho      92:        ok, error, no,                          /* for blob reply */
1.4       misho      93:        get, set, unset                         /* for blob request */
1.2       misho      94: } cmd_type_t;
                     95: 
1.1       misho      96: 
1.4       misho      97: #define RPC_CALLBACK_CHECK_INPUT(_f)   do { \
                     98:                                                assert((_f)); \
                     99:                                                if (!(_f)) { \
1.6       misho     100:                                                        rpc_SetErr(EINVAL, \
                    101:                                                                        "Invalid callback parameters ..."); \
1.2       misho     102:                                                        return -1; \
                    103:                                                } \
                    104:                                        } while (0)
1.4       misho     105: #define RPC_CALLBACK_CHK_ARGS(_f, _n)  do { \
                    106:                                                RPC_CALLBACK_CHECK_INPUT((_f)); \
1.5       misho     107:                                                if ((_f) && io_arraySize((_f)->func_vars) < _n) { \
1.6       misho     108:                                                        rpc_SetErr(EINVAL, \
                    109:                                                                        "Not enough number of arguments!"); \
1.1       misho     110:                                                        return -1; \
                    111:                                                } \
1.2       misho     112:                                        } while (0)
1.1       misho     113: 
                    114: 
                    115: /* RPC session identification */
                    116: 
                    117: typedef struct {
                    118:        uint8_t         sess_version;
                    119:        uint32_t        sess_program;
1.8.2.2   misho     120:        uint8_t         sess_process;
                    121: } __packed rpc_sess_t;         /* size == 6 bytes */
1.1       misho     122: 
                    123: 
                    124: /* Server managment RPC functions ... */
                    125: 
                    126: /* Network RPC packet - Client request */
                    127: 
                    128: struct tagRPCCall {
                    129:        rpc_sess_t      call_session;
1.6       misho     130: 
1.8.2.2   misho     131:        uint16_t        call_seq;
1.7       misho     132:        uint16_t        call_len;
1.8.2.2   misho     133:        uint16_t        call_crc;
1.1       misho     134: 
1.6       misho     135:        union {
                    136:                struct {
                    137:                        uint64_t        flags;
                    138:                }       call_req;
                    139:                struct {
                    140:                        int32_t         ret;
                    141:                        int32_t         eno;
                    142:                }       call_rep;
                    143:        };
1.1       misho     144: 
1.8.2.2   misho     145:        uint16_t        call_tag;
                    146:        uint16_t        call_argc;
                    147:        ait_val_t       call_argv[0];
1.8.2.4   misho     148: } __packed;                    /* size == 24 bytes */
1.1       misho     149: 
1.2       misho     150: /* Network BLOB packet - Header */
                    151: 
                    152: struct tagBLOBHdr {
                    153:        rpc_sess_t      hdr_session;
                    154:        uint8_t         hdr_cmd;
                    155:        uint32_t        hdr_var;
                    156:        uint32_t        hdr_len;
                    157:        uint32_t        hdr_ret;
1.6       misho     158:        uint16_t        hdr_crc;
                    159:        uint8_t         hdr_pad;
1.8.2.13  misho     160: } __packed;                    /* size == 22 bytes */
1.2       misho     161: 
1.1       misho     162: /* Network RPC client & server elements */
                    163: 
1.8.2.2   misho     164: /* RPC function registration element! */
                    165: typedef struct tagRPCFunc {
                    166:        ait_val_t               func_name;
                    167: 
                    168:        array_t                 *func_vars;
                    169: 
                    170:        void                    *func_parent;
                    171:        TAILQ_ENTRY(tagRPCFunc) func_node;
                    172: } rpc_func_t;
1.8.2.16  misho     173: #define RPC_FUNC_RETVARS(x)    ((x)->func_vars)
                    174: #define RPC_FUNC_SERVER(x)     ((rpc_srv_t*) (x)->func_parent)
1.8.2.2   misho     175: 
                    176: 
1.8.2.8   misho     177: /* BLOB register element */
                    178: typedef struct tagBLOB {
                    179:        uint32_t                blob_var;       /* BLOB id */
                    180: 
                    181:        size_t                  blob_len;       /* size of allocated BLOB data */
                    182:        void                    *blob_data;     /* mapped BLOB data */
                    183: 
                    184:        TAILQ_ENTRY(tagBLOB)    blob_node;
                    185: } rpc_blob_t;
                    186: 
                    187: 
1.1       misho     188: typedef struct {
1.8.2.1   misho     189:        int             cli_id;         /* slot id */
                    190:        int             cli_sock;       /* socket fd */
                    191:        io_sockaddr_t   cli_sa;         /* host address */
                    192:        ait_val_t       cli_buf;        /* network buffer */
1.8       misho     193: 
1.8.2.1   misho     194:        void            *cli_parent;    /* pointer to parent rpc_srv_t for server or to rpc_sess_t for client */
1.1       misho     195: } rpc_cli_t;
                    196: 
                    197: typedef struct {
1.8.2.1   misho     198:        rpc_sess_t                      srv_session;    /* RPC session registration info */
                    199:        int                             srv_netbuf;     /* size of network buffer */
1.1       misho     200: 
1.8.2.1   misho     201:        sched_root_task_t               *srv_root;      /* RPC server scheduler */
                    202:        intptr_t                        srv_kill;       /* Scheduler condition variable */
1.2       misho     203: 
1.8.2.1   misho     204:        rpc_cli_t                       srv_server;     /* RPC server socket */
                    205:        array_t                         *srv_clients;   /* connected rpc client sockets */
1.2       misho     206: 
1.8.2.1   misho     207:        TAILQ_HEAD(, tagRPCFunc)        srv_funcs;      /* RPC functions list */
1.2       misho     208: 
                    209:        struct {
1.8.2.10  misho     210:                sched_root_task_t               *root;          /* BLOB server scheduler */
                    211:                intptr_t                        kill;           /* BLOB server state: ==0 disable | !=0 enable */
                    212: 
1.8.2.8   misho     213:                ait_val_t                       dir;            /* BLOB states directory */
1.2       misho     214: 
1.8.2.8   misho     215:                rpc_cli_t                       server;         /* BLOB server socket */
                    216:                array_t                         *clients;       /* connected blob client sockets */
1.1       misho     217: 
1.8.2.8   misho     218:                TAILQ_HEAD(, tagBLOB)           blobs;          /* registered blob variables list */
1.8.2.1   misho     219:        }                               srv_blob;
1.1       misho     220: } rpc_srv_t;
                    221: 
                    222: 
1.2       misho     223: /* 
1.6       misho     224:  * (*rpc_callback_t)() - Callback type definition for RPC call in server process
                    225:  *
1.2       misho     226:  * @arg1 = current execution RPC call function
1.8.2.17! misho     227:  * @arg2 = RPC packet header
1.2       misho     228:  * @arg3 = input array with values from RPC call execution request
                    229:  * return: -1 error or >-1 success execution
                    230:  */
1.8.2.17! misho     231: typedef int (*rpc_callback_t)(rpc_func_t *, struct tagRPCCall *, array_t *);
1.1       misho     232: 
                    233: 
                    234: // -----------------------------------------------------------------------
                    235: 
                    236: /* Error support functions */
                    237: 
1.3       misho     238: // rpc_GetErrno() Get error code of last operation
                    239: inline int rpc_GetErrno();
                    240: // rpc_GetError() Get error text of last operation
                    241: inline const char *rpc_GetError();
1.1       misho     242: 
                    243: 
1.5       misho     244: /*
1.8.2.1   misho     245:  * rpc_chkPktSession() - Check RPC session
1.6       misho     246:  *
1.5       misho     247:  * @p = packet session
                    248:  * @s = active session
1.8.2.1   misho     249:  * return: -1, 1, 2, 3 are errors or 0 ok
1.5       misho     250:  */
                    251: inline int rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s);
                    252: /*
1.8.2.1   misho     253:  * rpc_addPktSession() - Prepare session into network format
1.6       misho     254:  *
1.5       misho     255:  * @p = packet session
1.8.2.1   misho     256:  * @s = host session
1.5       misho     257:  * return: -1 error or 0 ok
                    258:  */
                    259: inline int rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s);
1.8.2.1   misho     260: /*
1.8.2.17! misho     261:  * rpc_register_srvPing() - Register ping service function
        !           262:  *
        !           263:  * @srv = RPC server instance
        !           264:  * return: -1 error or 0 ok
        !           265:  */
        !           266: inline int rpc_register_srvPing(rpc_srv_t * __restrict srv);
        !           267: /*
1.8.2.1   misho     268:  * rpc_register_srvServices() - Register internal service functions
                    269:  *
                    270:  * @srv = RPC server instance
                    271:  * return: -1 error or 0 ok
                    272:  */
                    273: int rpc_register_srvServices(rpc_srv_t * __restrict srv);
1.8.2.6   misho     274: /*
                    275:  * rpc_register_blobServices() - Register internal service functions
                    276:  *
                    277:  * @srv = RPC server instance
                    278:  * return: -1 error or 0 ok
                    279:  */
                    280: int rpc_register_blobServices(rpc_srv_t * __restrict srv);
1.5       misho     281: 
                    282: 
1.1       misho     283: /* RPC Server side functions */
                    284: 
                    285: /*
1.6       misho     286:  * rpc_srv_initServer() - Init & create RPC Server
                    287:  *
1.1       misho     288:  * @regProgID = ProgramID for authentication & recognition
                    289:  * @regProcID = ProcessID for authentication & recognition
                    290:  * @concurentClients = Concurent clients at same time to this server
1.4       misho     291:  * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
1.3       misho     292:  * @csHost = Host name or address for bind server, if NULL any address
1.1       misho     293:  * @Port = Port for bind server, if Port == 0 default port is selected
                    294:  * return: NULL == error or !=NULL bind and created RPC server instance
                    295:  */
1.8.2.2   misho     296: rpc_srv_t *rpc_srv_initServer(unsigned int regProgID, unsigned char regProcID, 
                    297:                int concurentClients, int netBuf, 
                    298:                const char *csHost, unsigned short Port);
1.1       misho     299: /*
1.6       misho     300:  * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
                    301:  *
1.5       misho     302:  * @psrv = RPC Server instance
1.1       misho     303:  * return: none
                    304:  */
1.5       misho     305: void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);
1.1       misho     306: /*
1.6       misho     307:  * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
                    308:  *
1.1       misho     309:  * @srv = RPC Server instance
                    310:  * return: -1 error or 0 ok, infinite loop ...
                    311:  */
1.4       misho     312: int rpc_srv_loopServer(rpc_srv_t * __restrict srv);
                    313: #define rpc_srv_execServer(_srv, _sync)        do { assert((_srv)); pthread_t __tid; \
1.8.2.10  misho     314:                                                if (!(_srv)->srv_kill) { \
                    315:                                                        pthread_create(&__tid, NULL, (void*(*)(void*)) \
                    316:                                                                        rpc_srv_loopServer, (_srv)); \
                    317:                                                        if ((_sync)) \
                    318:                                                                pthread_join(__tid, (void**) (_sync)); \
                    319:                                                        else \
                    320:                                                                pthread_detach(__tid); \
                    321:                                                } } while (0)
1.1       misho     322: 
                    323: /*
1.6       misho     324:  * rpc_srv_initBLOBServer() - Init & create BLOB Server
                    325:  *
1.3       misho     326:  * @srv = RPC server instance
1.2       misho     327:  * @Port = Port for bind server, if Port == 0 default port is selected
                    328:  * @diskDir = Disk place for BLOB file objects
                    329:  * return: -1 == error or 0 bind and created BLOB server instance
                    330:  */
                    331: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir);
                    332: /*
1.6       misho     333:  * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
                    334:  *
1.2       misho     335:  * @srv = RPC Server instance
                    336:  * return: none
                    337:  */
                    338: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
                    339: /*
1.6       misho     340:  * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
                    341:  *
1.2       misho     342:  * @srv = RPC Server instance
                    343:  * return: -1 error or 0 ok, infinite loop ...
                    344:  */
1.8.2.10  misho     345: int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);
1.4       misho     346: #define rpc_srv_execBLOBServer(_srv)   do { assert((_srv)); pthread_t __tid; \
1.8.2.10  misho     347:                                                if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \
1.4       misho     348:                                                        pthread_create(&__tid, NULL, (void*(*)(void*)) \
1.8.2.10  misho     349:                                                                        rpc_srv_loopBLOBServer, (_srv)); \
1.4       misho     350:                                                        pthread_detach(__tid); \
                    351:                                                } \
                    352:                                        } while (0)
1.2       misho     353: 
                    354: /*
1.6       misho     355:  * rpc_srv_registerCall() - Register call to RPC server
                    356:  *
1.1       misho     357:  * @srv = RPC Server instance
1.8.2.4   misho     358:  * @tag = Function tag
                    359:  * @funcaddr = Function address
                    360:  * @args = Number of return function arguments
                    361:  * return: -1 error, 0 already registered tag or 1 register ok
1.1       misho     362:  */
1.8.2.4   misho     363: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, unsigned short tag, 
                    364:                void *funcaddr, unsigned short args);
1.1       misho     365: /*
1.6       misho     366:  * rpc_srv_unregisterCall() - Unregister call from RPC server
                    367:  *
1.1       misho     368:  * @srv = RPC Server instance
1.8.2.4   misho     369:  * @tag = Function tag
1.1       misho     370:  * return: -1 error, 0 not found call, 1 unregister ok
                    371:  */
1.8.2.4   misho     372: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, unsigned short tag);
1.1       misho     373: /*
1.8.2.4   misho     374:  * rpc_srv_getCall()  - Get registered call from RPC server
1.6       misho     375:  *
1.1       misho     376:  * @srv = RPC Server instance
                    377:  * @tag = tag for function
                    378:  * return: NULL not found call, !=NULL return call
                    379:  */
1.8.2.2   misho     380: inline rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag);
1.1       misho     381: /*
1.6       misho     382:  * rpc_srv_execCall() - Execute registered call from RPC server
                    383:  *
1.1       misho     384:  * @call = Register RPC call
                    385:  * @rpc = IN RPC call structure
1.4       misho     386:  * @args = IN RPC calling arguments from RPC client
1.1       misho     387:  * return: -1 error, !=-1 ok
                    388:  */
1.2       misho     389: int rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc, 
1.4       misho     390:                array_t * __restrict args);
1.1       misho     391: 
                    392: 
                    393: /*
1.8.2.9   misho     394:  * rpc_srv_blobCreate() - Create and map blob to memory region and return object
1.6       misho     395:  *
1.2       misho     396:  * @srv = RPC Server instance
                    397:  * @len = BLOB length object
                    398:  * return: NULL error or !=NULL allocated BLOB object
                    399:  */
                    400: inline rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len);
                    401: /*
1.6       misho     402:  * rpc_srv_blobMap() - Map blob to memory region 
                    403:  *
1.2       misho     404:  * @srv = RPC Server instance
                    405:  * @blob = Map to this BLOB element
                    406:  * return: -1 error or 0 ok
                    407:  */
                    408: inline int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
                    409: /*
1.6       misho     410:  * rpc_srv_blobUnmap() - Unmap blob memory region 
                    411:  *
1.2       misho     412:  * @blob = Mapped BLOB element
                    413:  * return: none
                    414:  */
                    415: inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
                    416: /*
1.6       misho     417:  * rpc_srv_blobFree() - Free blob from disk & memory
                    418:  *
1.2       misho     419:  * @srv = RPC Server instance
                    420:  * @blob = Mapped BLOB element
                    421:  * return: -1 error or 0 ok
                    422:  */
                    423: inline int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
                    424: 
                    425: /*
1.6       misho     426:  * rpc_srv_registerBLOB() - Register new BLOB to server
                    427:  *
1.2       misho     428:  * @srv = RPC Server instance
                    429:  * @len = BLOB length
                    430:  * return: NULL error or new registered BLOB
                    431:  */
                    432: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len);
                    433: /*
1.6       misho     434:  * rpc_srv_unregisterBLOB() - Unregister BLOB from server
                    435:  *
1.2       misho     436:  * @srv = RPC Server instance
                    437:  * @var = BLOB Variable for unregister
                    438:  * return: -1 error, 0 not found call, 1 unregister ok
                    439:  */
                    440: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
                    441: /*
1.6       misho     442:  * rpc_srv_getBLOB() - Get registered BLOB 
                    443:  *
1.2       misho     444:  * @srv = RPC Server instance
                    445:  * @var = hash for variable
                    446:  * return: NULL not found, !=NULL return blob var
                    447:  */
                    448: inline rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
                    449: 
                    450: /*
1.6       misho     451:  * rpc_srv_sendBLOB() - Send mapped BLOB to client
                    452:  *
1.2       misho     453:  * @cli = Client instance
                    454:  * @blob = Mapped BLOB element
                    455:  * return: -1 error, 0 ok
                    456:  */
                    457: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
                    458: /*
1.6       misho     459:  * rpc_srv_recvBLOB() - Receive BLOB from client
                    460:  *
1.2       misho     461:  * @cli = Client instance
                    462:  * @blob = Mapped BLOB element
                    463:  * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
                    464:  */
                    465: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
                    466: 
1.4       misho     467: /* CLIENT part of functions */
                    468: 
1.2       misho     469: /*
1.6       misho     470:  * rpc_cli_sendBLOB() - Send BLOB to server
                    471:  *
1.2       misho     472:  * @cli = Client instance
                    473:  * @var = BLOB variable
                    474:  * @data = BLOB data
                    475:  * return: -1 error, 0 ok, 1 remote error
                    476:  */
1.4       misho     477: int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void * __restrict data);
1.2       misho     478: /*
1.6       misho     479:  * rpc_cli_recvBLOB() - Receive BLOB from server
                    480:  *
1.2       misho     481:  * @cli = Client instance
                    482:  * @var = BLOB variable
                    483:  * @data = BLOB data, must be free after use!
                    484:  * return: -1 error, 0 ok, 1 remote error
                    485:  */
1.4       misho     486: int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data);
1.2       misho     487: /*
1.6       misho     488:  * rpc_cli_delBLOB() - Delete BLOB from server
                    489:  *
1.2       misho     490:  * @cli = Client instance
                    491:  * @var = BLOB variable
                    492:  * return: -1 error, 0 ok, 1 remote error
                    493:  */
1.4       misho     494: int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var);
1.2       misho     495: /*
1.6       misho     496:  * rpc_cli_getBLOB() - Receive BLOB from server and Delete after that.
                    497:  *
1.2       misho     498:  * @cli = Client instance
                    499:  * @var = BLOB variable
                    500:  * @data = BLOB data, must be free after use!
                    501:  * return: -1 error, 0 ok, >0 remote error
                    502:  */
1.6       misho     503: inline int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, 
                    504:                void ** __restrict data);
1.2       misho     505: 
                    506: 
1.1       misho     507: /* RPC Client side functions */
                    508: 
                    509: /*
1.6       misho     510:  * rpc_cli_openClient() - Connect to RPC Server
                    511:  *
1.1       misho     512:  * @ProgID = ProgramID for RPC session request
                    513:  * @ProcID = ProcessID for RPC session request
1.4       misho     514:  * @netBuf = Network buffer length, if =0 == BUFSIZ (also meaning max RPC packet)
1.1       misho     515:  * @csHost = Host name or IP address for bind server
                    516:  * @Port = Port for bind server, if Port == 0 default port is selected
                    517:  * return: NULL == error or !=NULL connection to RPC server established
                    518:  */
1.8.2.11  misho     519: rpc_cli_t *rpc_cli_openClient(unsigned int ProgID, unsigned char ProcID, int netBuf, 
1.8.2.15  misho     520:                const char *csHost, unsigned short Port);
1.1       misho     521: /*
1.6       misho     522:  * rpc_cli_closeClient() - Close connection to RPC server and free resources
                    523:  *
1.1       misho     524:  * @cli = RPC Client session
                    525:  * return: none
                    526:  */
1.8.2.11  misho     527: void rpc_cli_closeClient(rpc_cli_t ** __restrict cli);
1.1       misho     528: /*
1.6       misho     529:  * rpc_cli_execCall() - Execute RPC call
                    530:  *
1.1       misho     531:  * @cli = RPC Client session
1.7       misho     532:  * @noreply = We not want RPC reply
1.8.2.11  misho     533:  * @tag = Function tag for execution
1.3       misho     534:  * @in_vars = IN RPC call array of rpc values
1.4       misho     535:  * @out_vars = OUT returned array of rpc values, must be free after use with rpc_cli_freeVals()
1.1       misho     536:  * return: -1 error or != -1 ok result
                    537:  */
1.8.2.11  misho     538: int rpc_cli_execCall(rpc_cli_t *cli, int noreply, u_short tag, 
1.4       misho     539:                array_t * __restrict in_vars, array_t ** __restrict out_vars);
1.1       misho     540: 
                    541: 
1.2       misho     542: /*
1.6       misho     543:  * rpc_cli_openBLOBClient() - Connect to BLOB Server
                    544:  *
1.2       misho     545:  * @rpccli = RPC Client session
                    546:  * @Port = Port for bind server, if Port == 0 default port is selected
                    547:  * return: NULL == error or !=NULL connection to BLOB server established
                    548:  */
                    549: rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port);
                    550: /*
1.6       misho     551:  * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
                    552:  *
1.2       misho     553:  * @cli = BLOB Client session
                    554:  * return: none
                    555:  */
1.8.2.11  misho     556: void rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli);
1.2       misho     557: 
                    558: 
1.1       misho     559: #endif

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