/*************************************************************************
* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
* by Michael Pounov <misho@openbsd-bg.org>
*
* $Author: misho $
* $Id: aitrpc.h,v 1.2.4.2 2011/08/18 19:04:10 misho Exp $
*
**************************************************************************
The ELWIX and AITNET software is distributed under the following
terms:
All of the documentation and software included in the ELWIX and AITNET
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
by Michael Pounov <misho@elwix.org>. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by Michael Pounov <misho@elwix.org>
ELWIX - Embedded LightWeight unIX and its contributors.
4. Neither the name of AITNET nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#ifndef __AITRPC_H
#define __AITRPC_H
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/param.h>
#if !defined(__NetBSD__)
#include <sys/limits.h>
#endif
#include <sys/socket.h>
#define RPC_VERSION 1
#define RPC_DEFPORT 2611
/* RPC builtin registed calls */
#define CALL_BLOBSHUTDOWN "rpcBLOBServerShutdown"
#define CALL_BLOBCLIENTS "rpcBLOBServerClients"
#define CALL_BLOBVARS "rpcBLOBServerVars"
#define CALL_BLOBSTATE "rpcBLOBServerState"
#define CALL_SRVSHUTDOWN "rpcServerShutdown"
#define CALL_SRVCLIENTS "rpcServerClients"
#define CALL_SRVCALLS "rpcServerCalls"
#define CALL_SRVSESSIONS "rpcServerSessions"
/* RPC types */
typedef enum {
empty, // empty -> variable is not set
buffer, string, blob, // buffer -> uint8_t*; string -> int8_t*; blob -> void*(+socket);
size, offset, datetime, // size -> size_t; offset -> off_t; datetime -> time_t;
real, bigreal, // real -> float; bigreal -> double;
u8, u16, u32, u64, // unsigned integers ...
i8, i16, i32, i64 // integers ...
} rpc_type_t;
typedef enum {
disable, enable, // for blob.state
ok, error, // for blob reply
get, set, unset // for blob request
} cmd_type_t;
/* RPC value */
typedef struct {
rpc_type_t val_type;
size_t val_len;
union {
uint8_t *buffer;
int8_t *string;
uint32_t blob;
size_t size;
off_t offset;
time_t datetime;
float real;
double bigreal;
uint8_t u8;
uint16_t u16;
uint32_t u32;
uint64_t u64;
int8_t i8;
int16_t i16;
int32_t i32;
int64_t i64;
} val;
} __packed rpc_val_t;
#define RPC_TYPE_VAL(vl) ((vl)->val_type)
#define RPC_LEN_VAL(vl) ((vl)->val_len)
#define RPC_BLOB_CHUNKS(vl, n) ((vl)->val_len / (n) + ((vl)->val_len % (n)) ? 1 : 0)
#define RPC_EMPTY_VAL(vl) ((vl)->val_type == empty)
#define RPC_GET_BUF(vl) (assert((vl)->val_type == buffer), (vl)->val.buffer)
#define RPC_GET_STR(vl) (assert((vl)->val_type == string), (vl)->val.string)
#define RPC_GET_BLOB(vl) (assert((vl)->val_type == blob), (vl)->val.blob)
#define RPC_GET_SIZE(vl) (assert((vl)->val_type == size), (vl)->val.size)
#define RPC_GET_OFF(vl) (assert((vl)->val_type == offset), (vl)->val.offset)
#define RPC_GET_TIME(vl) (assert((vl)->val_type == datetime), (vl)->val.datetime)
#define RPC_GET_REAL(vl) (assert((vl)->val_type == real), (vl)->val.real)
#define RPC_GET_BREAL(vl) (assert((vl)->val_type == bigreal), (vl)->val.bigreal)
#define RPC_GET_U8(vl) (assert((vl)->val_type == u8), (vl)->val.u8)
#define RPC_GET_U16(vl) (assert((vl)->val_type == u16), (vl)->val.u16)
#define RPC_GET_U32(vl) (assert((vl)->val_type == u32), (vl)->val.u32)
#define RPC_GET_U64(vl) (assert((vl)->val_type == u64), (vl)->val.u64)
#define RPC_GET_I8(vl) (assert((vl)->val_type == i8), (vl)->val.i8)
#define RPC_GET_I16(vl) (assert((vl)->val_type == i16), (vl)->val.i16)
#define RPC_GET_I32(vl) (assert((vl)->val_type == i32), (vl)->val.i32)
#define RPC_GET_I64(vl) (assert((vl)->val_type == i64), (vl)->val.i64)
#define RPC_SET_BUF(vl, v, l) do { rpc_val_t *val = (vl); assert(val); val->val.buffer = malloc(l); \
if (val->val.buffer) { \
val->val_type = buffer; val->val_len = l; \
memcpy(val->val.buffer, v, l); \
} } while (0)
#define RPC_SET_STR(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val.string = (int8_t*) strdup(v); \
if (val->val.string) { \
val->val_type = string; val->val_len = strlen(v) + 1; \
} } while (0)
#define RPC_SET_BLOB(vl, v, l) do { rpc_val_t *val = (vl); assert(val); val->val_type = blob; \
val->val.blob = v; val->val_len = l; } while (0)
#define RPC_SET_BLOB2(vl, b) do { rpc_val_t *val = (vl); assert(val); assert(b); val->val_type = blob; \
val->val.blob = b->blob_var; val->val_len = b->blob_len; } while (0)
#define RPC_SET_SIZE(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = size; val->val.size = v; \
val->val_len = sizeof(size_t); } while (0)
#define RPC_SET_OFF(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = offset; val->val.offset = v; \
val->val_len = sizeof(off_t); } while (0)
#define RPC_SET_TIME(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = datetime; val->val.datetime = v; \
val->val_len = sizeof(time_t); } while (0)
#define RPC_SET_REAL(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = real; val->val.real = v; \
val->val_len = sizeof(float); } while (0)
#define RPC_SET_BREAL(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = bigreal; val->val.bigreal = v; \
val->val_len = sizeof(double); } while (0)
#define RPC_SET_U8(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u8; val->val.u8 = v; \
val->val_len = sizeof(uint8_t); } while (0)
#define RPC_SET_U16(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u16; val->val.u16 = v; \
val->val_len = sizeof(uint16_t); } while (0)
#define RPC_SET_U32(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u32; val->val.u32 = v; \
val->val_len = sizeof(uint32_t); } while (0)
#define RPC_SET_U64(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = u64; val->val.u64 = v; \
val->val_len = sizeof(uint64_t); } while (0)
#define RPC_SET_I8(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i8; val->val.i8 = v; \
val->val_len = sizeof(int8_t); } while (0)
#define RPC_SET_I16(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i16; val->val.i16 = v; \
val->val_len = sizeof(int16_t); } while (0)
#define RPC_SET_I32(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i32; val->val.i32 = v; \
val->val_len = sizeof(int32_t); } while (0)
#define RPC_SET_I64(vl, v) do { rpc_val_t *val = (vl); assert(val); val->val_type = i64; val->val.i64 = v; \
val->val_len = sizeof(int64_t); } while (0)
#define RPC_FREE_VAL(vl) do { rpc_val_t *val = (vl); assert(val); \
if (val->val_type == buffer && val->val.buffer) { \
free(val->val.buffer); \
val->val.buffer = NULL; \
} \
if (val->val_type == string && val->val.string) { \
free(val->val.string); \
val->val.string = NULL; \
} \
val->val_type = val->val_len = 0; \
} while (0)
#define RPC_CALLBACK_CHECK_INPUT(x) do { \
if (!x) { \
rpc_SetErr(22, "Error:: invalid callback parameters ...\n"); \
return -1; \
} \
} while (0)
#define RPC_CALLBACK_CHK_ARGS(f, n) do { \
RPC_CALLBACK_CHECK_INPUT(f); \
if (f && f->func_args != n) { \
rpc_SetErr(22, "Error:: different number of arguments!\n"); \
return -1; \
} \
} while (0)
/* RPC session identification */
typedef struct {
uint8_t sess_version;
uint32_t sess_program;
uint32_t sess_process;
} __packed rpc_sess_t;
/* Server managment RPC functions ... */
// RPC function registration element!
typedef struct tagRPCFunc {
uint16_t func_tag;
uint32_t func_hash;
int8_t func_file[MAXPATHLEN];
int8_t func_name[UCHAR_MAX + 1];
int8_t func_args;
rpc_val_t *func_vals;
void *func_parent;
struct tagRPCFunc *func_next;
} rpc_func_t;
/* Network RPC packet - Client request */
struct tagRPCCall {
rpc_sess_t call_session;
uint16_t call_tag;
uint32_t call_hash;
uint8_t call_argc;
} __packed;
/* Network RPC packet - Server response */
struct tagRPCRet {
rpc_sess_t ret_session;
uint16_t ret_tag;
uint32_t ret_hash;
int32_t ret_retcode;
int32_t ret_errno;
uint8_t ret_argc;
} __packed;
/* Network BLOB packet - Header */
struct tagBLOBHdr {
rpc_sess_t hdr_session;
uint8_t hdr_cmd;
uint32_t hdr_var;
uint32_t hdr_len;
uint32_t hdr_ret;
} __packed;
/* Network RPC client & server elements */
typedef struct {
struct sockaddr cli_sa; // host info
int cli_sock; // socket fd
int cli_type; // socket type
pthread_t cli_tid; // TID of thread
void *cli_parent; // pointer to parent rpc_srv_t for server or to rpc_sess_t for client
} rpc_cli_t;
// BLOB registration element!
typedef struct tagBLOB {
uint32_t blob_var;
size_t blob_len; // size of allocated BLOB data
void *blob_data; // BLOB data
struct tagBLOB *blob_next;
} rpc_blob_t;
typedef struct {
rpc_sess_t srv_session; // RPC session registration info
int srv_numcli; // maximum concurent client connections
rpc_cli_t srv_server; // RPC server socket
rpc_cli_t *srv_clients; // connected rpc client sockets
rpc_func_t *srv_funcs; // registered functions list
pthread_mutex_t srv_mtx;
struct {
int state; // BLOB server state: ==0 disable | !=0 enable
char dir[UCHAR_MAX + 1];
rpc_cli_t server; // BLOB server socket
rpc_cli_t *clients; // connected blob client sockets
rpc_blob_t *blobs; // registered blob variables list
pthread_mutex_t mtx;
} srv_blob;
} rpc_srv_t;
/*
* (*rpc_callback_t)() Callback type definition for RPC call in server process
* @arg1 = current execution RPC call function
* @arg2 = number of items in input array from call request
* @arg3 = input array with values from RPC call execution request
* return: -1 error or >-1 success execution
*/
typedef int (*rpc_callback_t)(rpc_func_t *, int, rpc_val_t *);
// -----------------------------------------------------------------------
/* Error support functions */
// cli_GetErrno() Get error code of last operation
inline int cli_GetErrno();
// cli_GetError() Get error text of last operation
inline const char *cli_GetError();
/* RPC Server side functions */
/*
* rpc_srv_initServer() Init & create RPC Server
* @regProgID = ProgramID for authentication & recognition
* @regProcID = ProcessID for authentication & recognition
* @concurentClients = Concurent clients at same time to this server
* @sockType = Socket type, like SOCK_STREAM, SOCK_DGRAM or SOCK_RAW
* @family = Family type, AF_INET, AF_INET6 or AF_LOCAL
* @csHost = Host name or address for bind server, if NULL any address
* @Port = Port for bind server, if Port == 0 default port is selected
* return: NULL == error or !=NULL bind and created RPC server instance
*/
rpc_srv_t *rpc_srv_initServer(u_int regProgID, u_int regProcID, int concurentClients,
int sockType, u_short family, const char *csHost, u_short Port);
/*
* rpc_srv_endServer() Destroy RPC server, close all opened sockets and free resources
* @srv = RPC Server instance
* return: none
*/
void rpc_srv_endServer(rpc_srv_t * __restrict srv);
/*
* rpc_srv_execServer() Execute Main server loop and wait for clients requests
* @srv = RPC Server instance
* return: -1 error or 0 ok, infinite loop ...
*/
int rpc_srv_execServer(rpc_srv_t * __restrict srv);
/*
* rpc_srv_initBLOBServer() Init & create BLOB Server
* @Port = Port for bind server, if Port == 0 default port is selected
* @diskDir = Disk place for BLOB file objects
* return: -1 == error or 0 bind and created BLOB server instance
*/
int rpc_srv_initBLOBServer(rpc_srv_t * __restrict srv, u_short Port, const char *diskDir);
/*
* rpc_srv_endBLOBServer() Destroy BLOB server, close all opened sockets and free resources
* @srv = RPC Server instance
* return: none
*/
void rpc_srv_endBLOBServer(rpc_srv_t * __restrict srv);
/*
* rpc_srv_execBLOBServer() Execute Main BLOB server loop and wait for clients requests
* @srv = RPC Server instance
* return: -1 error or 0 ok, infinite loop ...
*/
int rpc_srv_execBLOBServer(rpc_srv_t * __restrict srv);
/*
* rpc_srv_registerCall() Register call to RPC server
* @srv = RPC Server instance
* @csModule = Module name, if NULL self binary
* @csFunc = Function name
* @args = Number of return function arguments, use for restriction case!
* return: -1 error or 0 register ok
*/
int rpc_srv_registerCall(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc,
unsigned char args);
/*
* rpc_srv_unregisterCall() Unregister call from RPC server
* @srv = RPC Server instance
* @csModule = Module name, if NULL self binary
* @csFunc = Function name
* return: -1 error, 0 not found call, 1 unregister ok
*/
int rpc_srv_unregisterCall(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc);
/*
* rpc_srv_getFunc() Get registered call from RPC server by Name
* @srv = RPC Server instance
* @csModule = Module name, if NULL self binary
* @csFunc = Function name
* return: NULL not found call, !=NULL return call
*/
rpc_func_t *rpc_srv_getFunc(rpc_srv_t * __restrict srv, const char *csModule, const char *csFunc);
/*
* rpc_srv_getCall() Get registered call from RPC server
* @srv = RPC Server instance
* @tag = tag for function
* @hash = hash for function
* return: NULL not found call, !=NULL return call
*/
inline rpc_func_t *rpc_srv_getCall(rpc_srv_t * __restrict srv, uint16_t tag, uint32_t hash);
/*
* rpc_srv_execCall() Execute registered call from RPC server
* @call = Register RPC call
* @rpc = IN RPC call structure
* @args = IN RPC call array of rpc values
* return: -1 error, !=-1 ok
*/
int rpc_srv_execCall(rpc_func_t * __restrict call, struct tagRPCCall * __restrict rpc,
rpc_val_t * __restrict args);
/*
* rpc_srv_retValsCall() Declare return variables for RPC call and zeroed values
(for safe handling return values, use this!)
* @call = RPC function call
* @return_vals = Number of return variables
* return: NULL error, !=NULL array with return values for RPC call with return_vals items
*/
inline rpc_val_t *rpc_srv_retValsCall(rpc_func_t * __restrict call, int return_vals);
/*
* rpc_srv_declValsCall() Declare return variables for RPC call,
if already allocated memory for RPC call return values
function reallocate used space with return_vals count elements
* @call = RPC function call
* @return_vals = Number of return variables
* return: -1 error, !=-1 ok
*/
inline int rpc_srv_declValsCall(rpc_func_t * __restrict call, int return_vals);
/*
* rpc_srv_freeValsCall() Free return variables for RPC call
* @call = RPC function call
* return: none
*/
inline void rpc_srv_freeValsCall(rpc_func_t * __restrict call);
/*
* rpc_srv_copyValsCall() Copy return variables for RPC call to new variable
* @call = RPC function call
* @newvals = New allocated variables array, must be free after use
* return: -1 error, !=-1 Returned number of copied RPC variables
*/
inline int rpc_srv_copyValsCall(rpc_func_t * __restrict call, rpc_val_t ** __restrict newvals);
/*
* rpc_srv_zeroValsCall() Clean values from return variables of RPC call
* @call = RPC function call
* return: -1 error, !=-1 Returned number of cleaned RPC variables
*/
inline int rpc_srv_zeroValsCall(rpc_func_t * __restrict call);
/*
* rpc_srv_getValsCall() Get return variables for RPC call
* @call = RPC function call
* @vals = Returned variables, may be NULL
* return: -1 error, !=-1 Number of returned variables
*/
inline int rpc_srv_getValsCall(rpc_func_t * __restrict call, rpc_val_t ** __restrict vals);
/*
* rpc_srv_blobCreate() Create map blob to memory region and return object
* @srv = RPC Server instance
* @len = BLOB length object
* return: NULL error or !=NULL allocated BLOB object
*/
inline rpc_blob_t *rpc_srv_blobCreate(rpc_srv_t * __restrict srv, int len);
/*
* rpc_srv_blobMap() Map blob to memory region
* @srv = RPC Server instance
* @blob = Map to this BLOB element
* return: -1 error or 0 ok
*/
inline int rpc_srv_blobMap(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
/*
* rpc_srv_blobUnmap() Unmap blob memory region
* @blob = Mapped BLOB element
* return: none
*/
inline void rpc_srv_blobUnmap(rpc_blob_t * __restrict blob);
/*
* rpc_srv_blobFree() Free blob from disk & memory
* @srv = RPC Server instance
* @blob = Mapped BLOB element
* return: -1 error or 0 ok
*/
inline int rpc_srv_blobFree(rpc_srv_t * __restrict srv, rpc_blob_t * __restrict blob);
/*
* rpc_srv_registerBLOB() Register new BLOB to server
* @srv = RPC Server instance
* @len = BLOB length
* return: NULL error or new registered BLOB
*/
rpc_blob_t *rpc_srv_registerBLOB(rpc_srv_t * __restrict srv, size_t len);
/*
* rpc_srv_unregisterBLOB() Unregister BLOB from server
* @srv = RPC Server instance
* @var = BLOB Variable for unregister
* return: -1 error, 0 not found call, 1 unregister ok
*/
int rpc_srv_unregisterBLOB(rpc_srv_t * __restrict srv, uint32_t var);
/*
* rpc_srv_getBLOB() Get registered BLOB
* @srv = RPC Server instance
* @var = hash for variable
* return: NULL not found, !=NULL return blob var
*/
inline rpc_blob_t *rpc_srv_getBLOB(rpc_srv_t * __restrict srv, uint32_t var);
/*
* rpc_srv_sendBLOB() Send mapped BLOB to client
* @cli = Client instance
* @blob = Mapped BLOB element
* return: -1 error, 0 ok
*/
int rpc_srv_sendBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
/*
* rpc_srv_recvBLOB() Receive BLOB from client
* @cli = Client instance
* @blob = Mapped BLOB element
* return: -1 error, 0 ok, >0 unreceived data from client, may be error?
*/
int rpc_srv_recvBLOB(rpc_cli_t * __restrict cli, rpc_blob_t * __restrict blob);
/*
* rpc_cli_sendBLOB() Send BLOB to server
* @cli = Client instance
* @var = BLOB variable
* @data = BLOB data
* return: -1 error, 0 ok, 1 remote error
*/
int rpc_cli_sendBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void * __restrict data);
/*
* rpc_cli_recvBLOB() Receive BLOB from server
* @cli = Client instance
* @var = BLOB variable
* @data = BLOB data, must be free after use!
* return: -1 error, 0 ok, 1 remote error
*/
int rpc_cli_recvBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void ** data);
/*
* rpc_cli_delBLOB() Delete BLOB from server
* @cli = Client instance
* @var = BLOB variable
* return: -1 error, 0 ok, 1 remote error
*/
int rpc_cli_delBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var);
/*
* rpc_cli_getBLOB() Receive BLOB from server and Delete after that.
* @cli = Client instance
* @var = BLOB variable
* @data = BLOB data, must be free after use!
* return: -1 error, 0 ok, >0 remote error
*/
inline int rpc_cli_getBLOB(rpc_cli_t * __restrict cli, rpc_val_t * __restrict var, void ** data);
/* RPC Client side functions */
/*
* rpc_cli_openClient() Connect to RPC Server
* @ProgID = ProgramID for RPC session request
* @ProcID = ProcessID for RPC session request
* @family = Family socket type, AF_INET or AF_INET6
* @csHost = Host name or IP address for bind server
* @Port = Port for bind server, if Port == 0 default port is selected
* return: NULL == error or !=NULL connection to RPC server established
*/
rpc_cli_t *rpc_cli_openClient(u_int ProgID, u_int ProcID, u_short family,
const char *csHost, u_short Port);
/*
* rpc_cli_closeClient() Close connection to RPC server and free resources
* @cli = RPC Client session
* return: none
*/
void rpc_cli_closeClient(rpc_cli_t * __restrict cli);
/*
* rpc_cli_execCall() Execute RPC call
* @cli = RPC Client session
* @csModule = Module name, if NULL self binary
* @csFunc = Function name for execute
* @in_argc = IN count of arguments
* @in_vals = IN RPC call array of rpc values
* @out_argc = OUT returned count of arguments
* @out_vals = OUT returned array of rpc values, must be free after use (see rpc_cli_freeVals())
* return: -1 error or != -1 ok result
*/
int rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, const char *csFunc, int in_argc,
rpc_val_t * __restrict in_vals, int *out_argc, rpc_val_t ** __restrict out_vals);
/*
* rpc_cli_freeVals() Free rpc_val_t array returned from RPC call
* @args = Number of arguments in array
* @vals = Value elements
* return: none
*/
inline void rpc_cli_freeVals(int args, rpc_val_t *vals);
/*
* rpc_cli_openBLOBClient() Connect to BLOB Server
* @rpccli = RPC Client session
* @Port = Port for bind server, if Port == 0 default port is selected
* return: NULL == error or !=NULL connection to BLOB server established
*/
rpc_cli_t *rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port);
/*
* rpc_cli_closeBLOBClient() Close connection to BLOB server and free resources
* @cli = BLOB Client session
* return: none
*/
void rpc_cli_closeBLOBClient(rpc_cli_t * __restrict cli);
#endif
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