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 1.23.4.1 2014/03/03 00:36:01 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 - 2014
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 7
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: uint32_t call_len;
131: uint16_t call_crc;
132:
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: };
142:
143: uint16_t call_tag;
144: uint16_t call_argc;
145: ait_val_t call_argv[0];
146: } __packed; /* size == 20 bytes */
147: #define RPC_CHK_NOREPLY(x) (ntohl((u_long) (x)->call_req.flags) & RPC_NOREPLY)
148: #define RPC_SET_ERRNO(x, _v) ((x)->call_rep.eno = htonl((_v)))
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: ait_val_t cli_buf; /* network buffer */
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: #define RPC_CALL_DEFINE(x) int (x)(rpc_cli_t*, struct tagRPCCall*, array_t*)
251:
252:
253: /* ----------------------------------------------------------------------- */
254:
255: /* Error support functions */
256:
257: // rpc_GetErrno() Get error code of last operation
258: int rpc_GetErrno();
259: // rpc_GetError() Get error text of last operation
260: const char *rpc_GetError();
261: // rpc_SetErr() Set error to variables for internal use!!!
262: void rpc_SetErr(int eno, char *estr, ...);
263:
264:
265:
266: /*
267: * rpc_Read() - RPC read operation
268: *
269: * @sock = socket
270: * @type = type of socket
271: * @flags = receive flags
272: * @sa = check client address, if you use udp protocol
273: * @buf = buffer
274: * @blen = buffer length
275: * return: -1 error, 0 EOF or or >0 readed bytes into buffer
276: */
277: ssize_t rpc_Read(int sock, int type, int flags, sockaddr_t * __restrict sa,
278: unsigned char * __restrict buf, size_t blen);
279: /*
280: * rpc_Write() - RPC write operation
281: *
282: * @sock = socket
283: * @type = type of socket
284: * @flags = send flags
285: * @sa = send to client address, if you use udp protocol
286: * @buf = buffer
287: * @blen = buffer length
288: * return: -1 error, 0 EOF or >0 written bytes into buffer
289: */
290: ssize_t rpc_Write(int sock, int type, int flags, sockaddr_t * __restrict sa,
291: unsigned char * __restrict buf, size_t blen);
292:
293: /*
294: * rpc_chkPktSession() - Check RPC session
295: *
296: * @p = packet session
297: * @s = active session
298: * return: -1, 1, 2, 3 are errors or 0 ok
299: */
300: int rpc_chkPktSession(rpc_sess_t *p, rpc_sess_t *s);
301: /*
302: * rpc_addPktSession() - Prepare session into network format
303: *
304: * @p = packet session
305: * @s = host session
306: * return: -1 error or 0 ok
307: */
308: int rpc_addPktSession(rpc_sess_t *p, rpc_sess_t *s);
309: /*
310: * rpc_register_srvPing() - Register ping service function
311: *
312: * @srv = RPC server instance
313: * return: -1 error or 0 ok
314: */
315: int rpc_register_srvPing(rpc_srv_t * __restrict srv);
316: /*
317: * rpc_register_srvServices() - Register internal service functions
318: *
319: * @srv = RPC server instance
320: * return: -1 error or 0 ok
321: */
322: int rpc_register_srvServices(rpc_srv_t * __restrict srv);
323: /*
324: * rpc_register_blobServices() - Register internal service functions
325: *
326: * @srv = RPC server instance
327: * return: -1 error or 0 ok
328: */
329: int rpc_register_blobServices(rpc_srv_t * __restrict srv);
330:
331:
332: /* RPC Server side functions */
333:
334: /*
335: * rpc_srv_initServer() - Init & create RPC Server
336: *
337: * @InstID = Instance for authentication & recognition
338: * @concurentClients = Concurent clients at same time to this server
339: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
340: * @csHost = Host name or address for bind server, if NULL any address
341: * @Port = Port for bind server, if Port == 0 default port is selected
342: * @proto = Protocol, if == 0 choose SOCK_STREAM
343: * return: NULL == error or !=NULL bind and created RPC server instance
344: */
345: rpc_srv_t *rpc_srv_initServer(unsigned char InstID, int concurentClients, int netBuf,
346: const char *csHost, unsigned short Port, int proto);
347: /*
348: * rpc_srv_endServer() - Destroy RPC server, close all opened sockets and free resources
349: *
350: * @psrv = RPC Server instance
351: * return: none
352: */
353: void rpc_srv_endServer(rpc_srv_t ** __restrict psrv);
354: /*
355: * rpc_srv_loopServer() - Execute Main server loop and wait for clients requests
356: *
357: * @srv = RPC Server instance
358: * return: -1 error or 0 ok, infinite loop ...
359: */
360: int rpc_srv_loopServer(rpc_srv_t * __restrict srv);
361: #define rpc_srv_execServer(_srv, _sync) do { assert((_srv)); \
362: if (!(_srv)->srv_kill) { \
363: pthread_create(&(_srv)->srv_tid, NULL, (void*(*)(void*)) \
364: rpc_srv_loopServer, (_srv)); \
365: if ((_sync)) \
366: pthread_join((_srv)->srv_tid, (void**) (_sync)); \
367: else \
368: pthread_detach((_srv)->srv_tid); \
369: } } while (0)
370: #define rpc_srv_killServer(_srv) (assert((_srv)), (_srv)->srv_blob.kill = 1, (_srv)->srv_kill = 1)
371:
372: /*
373: * rpc_srv_initBLOBServer() - Init & create BLOB Server
374: *
375: * @srv = RPC server instance
376: * @Port = Port for bind server, if Port == 0 default port is selected
377: * @diskDir = Disk place for BLOB file objects
378: * return: -1 == error or 0 bind and created BLOB server instance
379: */
380: int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, unsigned short Port, const char *diskDir);
381: /*
382: * rpc_srv_endBLOBServer() - Destroy BLOB server, close all opened sockets and free resources
383: *
384: * @srv = RPC Server instance
385: * return: none
386: */
387: void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
388: /*
389: * rpc_srv_loopBLOB() - Execute Main BLOB server loop and wait for clients requests
390: *
391: * @srv = RPC Server instance
392: * return: -1 error or 0 ok, infinite loop ...
393: */
394: int rpc_srv_loopBLOBServer(rpc_srv_t * __restrict srv);
395: #define rpc_srv_execBLOBServer(_srv) do { assert((_srv)); \
396: if (!(_srv)->srv_kill && !(_srv)->srv_blob.kill) { \
397: pthread_create(&(_srv)->srv_blob.tid, NULL, \
398: (void*(*)(void*)) \
399: rpc_srv_loopBLOBServer, (_srv)); \
400: pthread_detach((_srv)->srv_blob.tid); \
401: } \
402: } while (0)
403:
404: /*
405: * rpc_srv_registerCall() - Register call to RPC server
406: *
407: * @srv = RPC Server instance
408: * @tag = Function tag
409: * @funcaddr = Function address
410: * return: -1 error, 0 already registered tag or 1 register ok
411: */
412: int rpc_srv_registerCall(rpc_srv_t * __restrict srv, unsigned short tag, void *funcaddr);
413: /*
414: * rpc_srv_unregisterCall() - Unregister call from RPC server
415: *
416: * @srv = RPC Server instance
417: * @tag = Function tag
418: * return: -1 error, 0 not found call, 1 unregister ok
419: */
420: int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, unsigned short tag);
421: /*
422: * rpc_srv_getCall() - Get registered call from RPC server
423: *
424: * @srv = RPC Server instance
425: * @tag = tag for function
426: * return: NULL not found call, !=NULL return call
427: */
428: rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag);
429: /*
430: * rpc_srv_execCall() Execute registered call from RPC server
431: *
432: * @cli = RPC client
433: * @rpc = IN RPC call structure
434: * @funcname = Execute RPC function
435: * @args = IN RPC calling arguments from RPC client
436: * return: -1 error, !=-1 ok
437: */
438: int rpc_srv_execCall(rpc_cli_t * __restrict cli, struct tagRPCCall * __restrict rpc,
439: ait_val_t funcname, array_t * __restrict args);
440:
441:
442: /*
443: * rpc_srv_blobCreate() - Create and map blob to memory region and return object
444: *
445: * @srv = RPC Server instance
446: * @len = BLOB length object
447: * @tout = BLOB live timeout in seconds
448: * return: NULL error or !=NULL allocated BLOB object
449: */
450: rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len, int tout);
451: /*
452: * rpc_srv_blobMap() - Map blob to memory region
453: *
454: * @srv = RPC Server instance
455: * @blob = Map to this BLOB element
456: * return: -1 error or 0 ok
457: */
458: int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
459: /*
460: * rpc_srv_blobUnmap() - Unmap blob memory region
461: *
462: * @blob = Mapped BLOB element
463: * return: none
464: */
465: void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
466: /*
467: * rpc_srv_blobFree() - Free blob from disk & memory
468: *
469: * @srv = RPC Server instance
470: * @blob = Mapped BLOB element
471: * return: -1 error or 0 ok
472: */
473: int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
474:
475: /*
476: * rpc_srv_registerBLOB() - Register new BLOB to server
477: *
478: * @srv = RPC Server instance
479: * @len = BLOB length
480: * @tout = BLOB live timeout in seconds
481: * return: NULL error or new registered BLOB
482: */
483: rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len, int tout);
484: /*
485: * rpc_srv_unregisterBLOB() - Unregister BLOB from server
486: *
487: * @srv = RPC Server instance
488: * @var = BLOB Variable for unregister
489: * return: -1 error, 0 not found call, 1 unregister ok
490: */
491: int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
492: /*
493: * rpc_srv_getBLOB() - Get registered BLOB
494: *
495: * @srv = RPC Server instance
496: * @var = hash for variable
497: * return: NULL not found, !=NULL return blob var
498: */
499: rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
500:
501: /*
502: * rpc_srv_sendBLOB() - Send mapped BLOB to client
503: *
504: * @cli = Client instance
505: * @blob = Mapped BLOB element
506: * return: -1 error, 0 ok
507: */
508: int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
509: /*
510: * rpc_srv_recvBLOB() - Receive BLOB from client
511: *
512: * @cli = Client instance
513: * @blob = Mapped BLOB element
514: * return: -1 error, 0 ok, >0 unreceived data from client, may be error?
515: */
516: int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
517:
518: /* CLIENT part of functions */
519:
520: /*
521: * rpc_cli_sendBLOB() - Send BLOB to server
522: *
523: * @cli = Client instance
524: * @var = BLOB variable
525: * @data = BLOB data
526: * @tout = BLOB live on server timeout in seconds, if =0 default timeout
527: * return: -1 error, 0 ok, 1 remote error
528: */
529: int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
530: void * __restrict data, int tout);
531: /*
532: * rpc_cli_recvBLOB() - Receive BLOB from server
533: *
534: * @cli = Client instance
535: * @var = BLOB variable
536: * @data = BLOB data, must be e_free after use!
537: * return: -1 error, 0 ok, 1 remote error
538: */
539: int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var, void ** __restrict data);
540: /*
541: * rpc_cli_delBLOB() - Delete BLOB from server
542: *
543: * @cli = Client instance
544: * @var = BLOB variable
545: * return: -1 error, 0 ok, 1 remote error
546: */
547: int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var);
548: /*
549: * rpc_cli_getBLOB() - Receive BLOB from server and Delete after that.
550: *
551: * @cli = Client instance
552: * @var = BLOB variable
553: * @data = BLOB data, must be e_free after use!
554: * return: -1 error, 0 ok, >0 remote error
555: */
556: int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, ait_val_t * __restrict var,
557: void ** __restrict data);
558:
559:
560: /* RPC Client side functions */
561:
562: /*
563: * rpc_cli_openClient() - Connect to RPC Server
564: *
565: * @InstID = InstID for RPC session request
566: * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet)
567: * @csHost = Host name or IP address for bind server
568: * @Port = Port for bind server, if Port == 0 default port is selected
569: * @proto = Protocol, if == 0 choose SOCK_STREAM
570: * return: NULL == error or !=NULL connection to RPC server established
571: */
572: rpc_cli_t *rpc_cli_openClient(unsigned char InstID, int netBuf,
573: const char *csHost, unsigned short Port, int proto);
574: /*
575: * rpc_cli_reconnectClient() - Reconnecting client to RPC server
576: *
577: * @cli = RPC Client session
578: * return: -1 error or 0 ok
579: */
580: int rpc_cli_reconnectClient(rpc_cli_t * __restrict cli);
581: /*
582: * rpc_cli_closeClient() - Close connection to RPC server and free resources
583: *
584: * @cli = RPC Client session
585: * return: none
586: */
587: void rpc_cli_closeClient(rpc_cli_t ** __restrict cli);
588: /*
589: * rpc_pkt_Send() - Send RPC packet
590: *
591: * @sock = Socket
592: * @type = Type of socket
593: * @sa = Server address
594: * @pkt = RPC packet
595: * @len = Length of packet
596: * return: -1 error, 0 EOF or >0 sended bytes
597: */
598: int rpc_pkt_Send(int sock, int type, sockaddr_t * __restrict sa,
599: ait_val_t * __restrict pkt, int len);
600: /*
601: * rpc_pkt_Receive() - Receive RPC packet
602: *
603: * @sock = Socket
604: * @type = Type of socket
605: * @sa = Server address
606: * @pkt = RPC packet
607: * return: -1 error, 0 EOF or >0 received bytes
608: */
609: int rpc_pkt_Receive(int sock, int type, sockaddr_t * __restrict sa,
610: ait_val_t * __restrict pkt);
611: /*
612: * rpc_pkt_Request() - Build RPC Request packet
613: *
614: * @pkt = Packet buffer
615: * @sess = RPC session info
616: * @tag = Function tag for execution
617: * @vars = Function argument array of values, may be NULL
618: * @noreply = We not want RPC reply
619: * @nocrc = Without CRC calculation
620: * return: -1 error or != -1 prepared bytes into packet
621: */
622: int rpc_pkt_Request(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess,
623: unsigned short tag, array_t * __restrict vars, int noreply, int nocrc);
624: /*
625: * rpc_pkt_Replay() - Decode RPC Replay packet
626: *
627: * @pkt = Packet buffer
628: * @sess = RPC session info
629: * @tag = Function tag
630: * @vars = Function argument array of values, may be NULL
631: * @nocrc = Without CRC calculation
632: * return: -1 error or != -1 return value from function
633: */
634: int rpc_pkt_Replay(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess,
635: unsigned short tag, array_t ** __restrict vars, int nocrc);
636: /*
637: * rpc_cli_execCall() - Execute RPC call
638: *
639: * @cli = RPC Client session
640: * @noreply = We not want RPC reply
641: * @tag = Function tag for execution
642: * @in_vars = IN function argument array of values, may be NULL
643: * @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with ait_freeVars()
644: * return: -1 error, 0 ok result or 1 closed rpc connection
645: */
646: int rpc_cli_execCall(rpc_cli_t *cli, int noreply, unsigned short tag,
647: array_t * __restrict in_vars, array_t ** __restrict out_vars);
648: /*
649: * rpc_cli_freeCall() - Free resouce allocated by RPC call
650: *
651: * @out_vars = Returned array with variables from RPC call
652: * return: none
653: */
654: void rpc_cli_freeCall(array_t ** __restrict out_vars);
655: /*
656: * rpc_cli_ping() - Ping RPC server
657: *
658: * @cli = connected client
659: * return: -1 error or !=-1 ping seq id
660: */
661: int rpc_cli_ping(rpc_cli_t *cli);
662:
663:
664: /*
665: * rpc_cli_openBLOBClient() - Connect to BLOB Server
666: *
667: * @rpccli = RPC Client session
668: * @Port = Port for bind server, if Port == 0 default port is selected
669: * return: NULL == error or !=NULL connection to BLOB server established
670: */
671: rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, unsigned short Port);
672: /*
673: * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources
674: *
675: * @cli = BLOB Client session
676: * return: none
677: */
678: void rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli);
679:
680:
681: #endif
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