1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: aitrpc.h,v 1.17.2.1 2013/08/20 23:25:18 misho Exp $
7: *
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:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
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: */
46: #ifndef __AITRPC_H
47: #define __AITRPC_H
48:
49:
50: #include <assert.h>
51: #include <stdlib.h>
52: #include <string.h>
53: #include <errno.h>
54: #include <sys/types.h>
55: #include <sys/param.h>
56: #if !defined(__NetBSD__)
57: #include <sys/limits.h>
58: #endif
59: #include <sys/socket.h>
60: #include <sys/queue.h>
61: #include <elwix.h>
62: #include <aitsched.h>
63:
64:
65: #define RPC_VERSION 6
66: #define RPC_DEFPORT 2611
67:
68: /* RPC call request flags */
69:
70: #define RPC_REPLY 0x0
71: #define RPC_NOREPLY 0x1
72:
73: /* RPC builtin registed calls */
74:
75: #define CALL_TAG_MAX 65535
76:
77: #define CALL_SRVPING 65534
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
87:
88: /* RPC signals */
89: #define SIGFBLOB 54
90:
91: /* RPC types */
92:
93: typedef enum {
94: ok, error, no, /* for blob reply */
95: get, set, unset /* for blob request */
96: } blob_cmd_type_t;
97:
98:
99: #define RPC_CALLBACK_CHECK_INPUT(x) do { \
100: assert((x)); \
101: if (!(x)) { \
102: rpc_SetErr(EINVAL, \
103: "Invalid callback parameters ..."); \
104: return -1; \
105: } \
106: } while (0)
107:
108:
109: /* RPC session identification */
110:
111: typedef struct {
112: #if BYTE_ORDER == LITTLE_ENDIAN
113: uint16_t sess_instance:8;
114: uint16_t sess_version:8;
115: #endif
116: #if BYTE_ORDER == BIG_ENDIAN
117: uint16_t sess_version:8;
118: uint16_t sess_instance:8;
119: #endif
120: } __packed rpc_sess_t; /* size == 2 bytes */
121:
122:
123: /* Server managment RPC functions ... */
124:
125: /* Network RPC packet - Client request */
126:
127: struct tagRPCCall {
128: rpc_sess_t call_session;
129:
130: uint16_t call_seq;
131: uint16_t call_len;
132: uint16_t call_crc;
133:
134: union {
135: struct {
136: uint64_t flags;
137: } call_req;
138: struct {
139: int32_t ret;
140: int32_t eno;
141: } call_rep;
142: };
143:
144: uint16_t call_tag;
145: uint16_t call_argc;
146: ait_val_t call_argv[0];
147: } __packed; /* size == 20 bytes */
148: #define RPC_CHK_NOREPLY(x) ((x)->call_req.flags & RPC_NOREPLY)
149:
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;
158: uint8_t hdr_pad;
159: } __packed; /* size == 16 bytes */
160:
161: /* Network RPC client & server elements */
162:
163: /* RPC function registration element! */
164: typedef struct tagRPCFunc {
165: ait_val_t func_name;
166:
167: void *func_parent;
168:
169: SLIST_ENTRY(tagRPCFunc) func_next;
170: AVL_ENTRY(tagRPCFunc) func_node;
171: } rpc_func_t;
172: #define RPC_FUNC_SERVER(x) ((rpc_srv_t*) (x)->func_parent)
173:
174: /* Tree root node */
175: typedef struct tagRPCFuncs {
176: pthread_mutex_t mtx;
177:
178: struct tagRPCFunc *slh_first;
179: struct tagRPCFunc *avlh_root;
180: } rpc_funcs_t;
181: #define RPC_FUNCS_LOCK(x) pthread_mutex_lock(&(x)->mtx)
182: #define RPC_FUNCS_UNLOCK(x) pthread_mutex_unlock(&(x)->mtx)
183: #define RPC_FUNCS_ISEMPTY(x) AVL_EMPTY((x))
184:
185:
186: /* BLOB register element */
187: typedef struct tagBLOB {
188: uint32_t blob_var; /* BLOB id */
189:
190: size_t blob_len; /* size of allocated BLOB data */
191: void *blob_data; /* mapped BLOB data */
192:
193: TAILQ_ENTRY(tagBLOB) blob_node;
194: } rpc_blob_t;
195:
196:
197: typedef struct {
198: int cli_id; /* slot id */
199: int cli_sock; /* socket fd */
200: sockaddr_t cli_sa; /* host address */
201: array_t *cli_buf; /* network buffer(s) */
202:
203: array_t *cli_vars; /* function return variables */
204:
205: void *cli_parent; /* pointer to parent rpc_srv_t for server or to rpc_sess_t for client */
206: } rpc_cli_t;
207: #define RPC_RETVARS(x) ((x)->cli_vars)
208: #define RPC_SRV_SERVER(x) ((rpc_srv_t*) (x)->cli_parent)
209: #define RPC_CLI_SESSION(x) ((rpc_sess_t*) (x)->cli_parent)
210:
211: typedef struct {
212: rpc_sess_t srv_session; /* RPC session registration info */
213: int srv_netbuf; /* size of network buffer */
214: int srv_proto; /* Server protocol */
215:
216: pthread_t srv_tid; /* RPC exec pthread */
217: sched_root_task_t *srv_root; /* RPC server scheduler */
218: intptr_t srv_kill; /* Scheduler condition variable */
219:
220: rpc_cli_t srv_server; /* RPC server socket */
221: array_t *srv_clients; /* connected rpc client sockets */
222:
223: rpc_funcs_t srv_funcs; /* RPC functions */
224:
225: struct {
226: pthread_t tid; /* BLOB exec pthread */
227: sched_root_task_t *root; /* BLOB server scheduler */
228: intptr_t kill; /* BLOB server state: ==0 disable | !=0 enable */
229:
230: ait_val_t dir; /* BLOB states directory */
231:
232: rpc_cli_t server; /* BLOB server socket */
233: array_t *clients; /* connected blob client sockets */
234:
235: TAILQ_HEAD(, tagBLOB) blobs; /* registered blob variables list */
236: } srv_blob;
237: } rpc_srv_t;
238:
239:
240: /*
241: * (*rpc_callback_t)() - Callback type definition for RPC call in server process
242: *
243: * @arg1 = RPC client
244: * @arg2 = RPC packet header
245: * @arg3 = input array with values from RPC call execution request
246: * return: -1 error or >-1 success execution
247: */
248: typedef int (*rpc_callback_t)(rpc_cli_t *, struct tagRPCCall *, array_t *);
249:
250:
251: /* ----------------------------------------------------------------------- */
252:
253: /* Error support functions */
254:
255: // rpc_GetErrno() Get error code of last operation
256: int rpc_GetErrno();
257: // rpc_GetError() Get error text of last operation
258: const char *rpc_GetError();
259: // rpc_SetErr() Set error to variables for internal use!!!
260: void rpc_SetErr(int eno, char *estr, ...);
261:
262:
263:
264: /*
265: * rpc_chkPktSession() - Check RPC session
266: *
267: * @p = packet session
268: * @s = active session
269: * return: -1, 1, 2, 3 are errors or 0 ok
270: */
271: int rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s);
272: /*
273: * rpc_addPktSession() - Prepare session into network format
274: *
275: * @p = packet session
276: * @s = host session
277: * return: -1 error or 0 ok
278: */
279: int rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s);
280: /*
281: * rpc_register_srvPing() - Register ping service function
282: *
283: * @srv = RPC server instance
284: * return: -1 error or 0 ok
285: */
286: int rpc_register_srvPing(rpc_srv_t * __restrict srv);
287: /*
288: * rpc_register_srvServices() - Register internal service functions
289: *
290: * @srv = RPC server instance
291: * return: -1 error or 0 ok
292: */
293: int rpc_register_srvServices(rpc_srv_t * __restrict srv);
294: /*
295: * rpc_register_blobServices() - Register internal service functions
296: *
297: * @srv = RPC server instance
298: * return: -1 error or 0 ok
299: */
300: int rpc_register_blobServices(rpc_srv_t * __restrict srv);
301:
302:
303: /* RPC Server side functions */
304:
305: /*
306: * rpc_srv_initServer() - Init & create RPC Server
307: *
308: * @InstID = Instance for authentication & recognition
309: * @concurentClients = Concurent clients at same time to this server
310: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
311: * @csHost = Host name or address for bind server, if NULL any address
312: * @Port = Port for bind server, if Port == 0 default port is selected
313: * @proto = Protocol, if == 0 choose SOCK_STREAM
314: * return: NULL == error or !=NULL bind and created RPC server instance
315: */
316: rpc_srv_t *rpc_srv_initServer(unsigned char InstID, int concurentClients, int netBuf,
317: const char *csHost, unsigned short Port, int proto);
318: /*
319: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
320: *
321: * @psrv = RPC Server instance
322: * return: none
323: */
324: void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);
325: /*
326: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
327: *
328: * @srv = RPC Server instance
329: * return: -1 error or 0 ok, infinite loop ...
330: */
331: int rpc_srv_loopServer(rpc_srv_t * __restrict srv);
332: #define rpc_srv_execServer(_srv, _sync) do { assert((_srv)); \
333: if (!(_srv)->srv_kill) { \
334: pthread_create(&(_srv)->srv_tid, NULL, (void*(*)(void*)) \
335: rpc_srv_loopServer, (_srv)); \
336: if ((_sync)) \
337: pthread_join((_srv)->srv_tid, (void**) (_sync)); \
338: else \
339: pthread_detach((_srv)->srv_tid); \
340: } } while (0)
341:
342: /*
343: * rpc_srv_initBLOBServer() - Init & create BLOB Server
344: *
345: * @srv = RPC server instance
346: * @Port = Port for bind server, if Port == 0 default port is selected
347: * @diskDir = Disk place for BLOB file objects
348: * return: -1 == error or 0 bind and created BLOB server instance
349: */
350: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, unsigned short Port, const char *diskDir);
351: /*
352: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
353: *
354: * @srv = RPC Server instance
355: * return: none
356: */
357: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
358: /*
359: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
360: *
361: * @srv = RPC Server instance
362: * return: -1 error or 0 ok, infinite loop ...
363: */
364: int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);
365: #define rpc_srv_execBLOBServer(_srv) do { assert((_srv)); \
366: if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \
367: pthread_create(&(_srv)->srv_blob.tid, NULL, \
368: (void*(*)(void*)) \
369: rpc_srv_loopBLOBServer, (_srv)); \
370: pthread_detach((_srv)->srv_blob.tid); \
371: } \
372: } while (0)
373:
374: /*
375: * rpc_srv_registerCall() - Register call to RPC server
376: *
377: * @srv = RPC Server instance
378: * @tag = Function tag
379: * @funcaddr = Function address
380: * return: -1 error, 0 already registered tag or 1 register ok
381: */
382: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, unsigned short tag, void *funcaddr);
383: /*
384: * rpc_srv_unregisterCall() - Unregister call from RPC server
385: *
386: * @srv = RPC Server instance
387: * @tag = Function tag
388: * return: -1 error, 0 not found call, 1 unregister ok
389: */
390: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, unsigned short tag);
391: /*
392: * rpc_srv_getCall() - Get registered call from RPC server
393: *
394: * @srv = RPC Server instance
395: * @tag = tag for function
396: * return: NULL not found call, !=NULL return call
397: */
398: rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag);
399: /*
400: * rpc_srv_execCall() Execute registered call from RPC server
401: *
402: * @cli = RPC client
403: * @rpc = IN RPC call structure
404: * @funcname = Execute RPC function
405: * @args = IN RPC calling arguments from RPC client
406: * return: -1 error, !=-1 ok
407: */
408: int rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
409: ait_val_t funcname, array_t * __restrict args);
410:
411:
412: /*
413: * rpc_srv_blobCreate() - Create and map blob to memory region and return object
414: *
415: * @srv = RPC Server instance
416: * @len = BLOB length object
417: * @tout = BLOB live timeout in seconds
418: * return: NULL error or !=NULL allocated BLOB object
419: */
420: rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len, int tout);
421: /*
422: * rpc_srv_blobMap() - Map blob to memory region
423: *
424: * @srv = RPC Server instance
425: * @blob = Map to this BLOB element
426: * return: -1 error or 0 ok
427: */
428: int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
429: /*
430: * rpc_srv_blobUnmap() - Unmap blob memory region
431: *
432: * @blob = Mapped BLOB element
433: * return: none
434: */
435: void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
436: /*
437: * rpc_srv_blobFree() - Free blob from disk & memory
438: *
439: * @srv = RPC Server instance
440: * @blob = Mapped BLOB element
441: * return: -1 error or 0 ok
442: */
443: int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
444:
445: /*
446: * rpc_srv_registerBLOB() - Register new BLOB to server
447: *
448: * @srv = RPC Server instance
449: * @len = BLOB length
450: * @tout = BLOB live timeout in seconds
451: * return: NULL error or new registered BLOB
452: */
453: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len, int tout);
454: /*
455: * rpc_srv_unregisterBLOB() - Unregister BLOB from server
456: *
457: * @srv = RPC Server instance
458: * @var = BLOB Variable for unregister
459: * return: -1 error, 0 not found call, 1 unregister ok
460: */
461: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
462: /*
463: * rpc_srv_getBLOB() - Get registered BLOB
464: *
465: * @srv = RPC Server instance
466: * @var = hash for variable
467: * return: NULL not found, !=NULL return blob var
468: */
469: rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
470:
471: /*
472: * rpc_srv_sendBLOB() - Send mapped BLOB to client
473: *
474: * @cli = Client instance
475: * @blob = Mapped BLOB element
476: * return: -1 error, 0 ok
477: */
478: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
479: /*
480: * rpc_srv_recvBLOB() - Receive BLOB from client
481: *
482: * @cli = Client instance
483: * @blob = Mapped BLOB element
484: * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
485: */
486: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
487:
488: /* CLIENT part of functions */
489:
490: /*
491: * rpc_cli_sendBLOB() - Send BLOB to server
492: *
493: * @cli = Client instance
494: * @var = BLOB variable
495: * @data = BLOB data
496: * @tout = BLOB live on server timeout in seconds, if =0 default timeout
497: * return: -1 error, 0 ok, 1 remote error
498: */
499: int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
500: void * __restrict data, int tout);
501: /*
502: * rpc_cli_recvBLOB() - Receive BLOB from server
503: *
504: * @cli = Client instance
505: * @var = BLOB variable
506: * @data = BLOB data, must be e_free after use!
507: * return: -1 error, 0 ok, 1 remote error
508: */
509: int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data);
510: /*
511: * rpc_cli_delBLOB() - Delete BLOB from server
512: *
513: * @cli = Client instance
514: * @var = BLOB variable
515: * return: -1 error, 0 ok, 1 remote error
516: */
517: int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var);
518: /*
519: * rpc_cli_getBLOB() - Receive BLOB from server and Delete after that.
520: *
521: * @cli = Client instance
522: * @var = BLOB variable
523: * @data = BLOB data, must be e_free after use!
524: * return: -1 error, 0 ok, >0 remote error
525: */
526: int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
527: void ** __restrict data);
528:
529:
530: /* RPC Client side functions */
531:
532: /*
533: * rpc_cli_openClient() - Connect to RPC Server
534: *
535: * @InstID = InstID for RPC session request
536: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
537: * @csHost = Host name or IP address for bind server
538: * @Port = Port for bind server, if Port == 0 default port is selected
539: * @proto = Protocol, if == 0 choose SOCK_STREAM
540: * return: NULL == error or !=NULL connection to RPC server established
541: */
542: rpc_cli_t *rpc_cli_openClient(unsigned char InstID, int netBuf,
543: const char *csHost, unsigned short Port, int proto);
544: /*
545: * rpc_cli_closeClient() - Close connection to RPC server and free resources
546: *
547: * @cli = RPC Client session
548: * return: none
549: */
550: void rpc_cli_closeClient(rpc_cli_t ** __restrict cli);
551: /*
552: * rpc_pkt_Send() - Send RPC packet
553: *
554: * @sock = Socket
555: * @type = Type of socket
556: * @sa = Server address
557: * @pkt = RPC packet
558: * @len = Length of packet
559: * return: -1 error or !=-1 sended bytes
560: */
561: int rpc_pkt_Send(int sock, int type, sockaddr_t * __restrict sa,
562: ait_val_t * __restrict pkt, int len);
563: /*
564: * rpc_pkt_Receive() - Receive RPC packet
565: *
566: * @sock = Socket
567: * @type = Type of socket
568: * @sa = Server address
569: * @pkt = RPC packet
570: * return: -1 error or !=-1 sended bytes
571: */
572: int rpc_pkt_Receive(int sock, int type, sockaddr_t * __restrict sa,
573: ait_val_t * __restrict pkt);
574: /*
575: * rpc_pkt_Request() - Build RPC Request packet
576: *
577: * @pkt = Packet buffer
578: * @sess = RPC session info
579: * @tag = Function tag for execution
580: * @vars = Function argument array of values, may be NULL
581: * @noreply = We not want RPC reply
582: * @nocrc = Without CRC calculation
583: * return: -1 error or != -1 prepared bytes into packet
584: */
585: int rpc_pkt_Request(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess,
586: unsigned short tag, array_t * __restrict vars, int noreply, int nocrc);
587: /*
588: * rpc_pkt_Replay() - Decode RPC Replay packet
589: *
590: * @pkt = Packet buffer
591: * @sess = RPC session info
592: * @tag = Function tag
593: * @vars = Function argument array of values, may be NULL
594: * @nocrc = Without CRC calculation
595: * return: -1 error or != -1 return value from function
596: */
597: int rpc_pkt_Replay(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess,
598: unsigned short tag, array_t ** __restrict vars, int nocrc);
599: /*
600: * rpc_cli_execCall() - Execute RPC call
601: *
602: * @cli = RPC Client session
603: * @noreply = We not want RPC reply
604: * @tag = Function tag for execution
605: * @in_vars = IN function argument array of values, may be NULL
606: * @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with ait_freeVars()
607: * return: -1 error or != -1 ok result
608: */
609: int rpc_cli_execCall(rpc_cli_t *cli, int noreply, unsigned short tag,
610: array_t * __restrict in_vars, array_t ** __restrict out_vars);
611: /*
612: * rpc_cli_freeCall() - Free resouce allocated by RPC call
613: *
614: * @out_vars = Returned array with variables from RPC call
615: * return: none
616: */
617: void rpc_cli_freeCall(array_t ** __restrict out_vars);
618: /*
619: * rpc_cli_ping() - Ping RPC server
620: *
621: * @cli = connected client
622: * return: -1 error or !=-1 ping seq id
623: */
624: int rpc_cli_ping(rpc_cli_t *cli);
625:
626:
627: /*
628: * rpc_cli_openBLOBClient() - Connect to BLOB Server
629: *
630: * @rpccli = RPC Client session
631: * @Port = Port for bind server, if Port == 0 default port is selected
632: * return: NULL == error or !=NULL connection to BLOB server established
633: */
634: rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, unsigned short Port);
635: /*
636: * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
637: *
638: * @cli = BLOB Client session
639: * return: none
640: */
641: void rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli);
642:
643:
644: #endif
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