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Annotation of mstools/samples/rpc/hello/helloc.c, revision 1.1

1.1     ! root        1: /****************************************************************************
        !             2:                          Microsoft RPC Version 1.0
        !             3:                        Copyright Microsoft Corp. 1992
        !             4:                               Hello Example
        !             5: 
        !             6:     FILE:      helloc.c
        !             7:     USAGE:     client   -n network_address
        !             8:                         -p protocol_sequence
        !             9:                         -e endpoint
        !            10:                         -o options
        !            11:                         -u uuid
        !            12: 
        !            13:     PURPOSE:   Client side of RPC distributed application
        !            14:     FUNCTIONS: main() - binds to server and calls remote procedure
        !            15:     COMMENTS:
        !            16:     This distributed application prints a string such as "hello, world"
        !            17:     on the server. The client manages its connection to the server.
        !            18:     The client uses the binding handle hello_IfHandle defined in the
        !            19:     file hello.h.
        !            20: 
        !            21: ****************************************************************************/
        !            22: #include <stdio.h>
        !            23: #include <string.h>
        !            24: #include <stdlib.h>
        !            25: #include <rpc.h>       // RPC API functions, types
        !            26: #include "hello.h"     // header file generated by MIDL compiler
        !            27: 
        !            28: void Usage(char * pszProgramName)
        !            29: {
        !            30:     fprintf(stderr, "Usage:  %s\n", pszProgramName);
        !            31:     fprintf(stderr, " -p protocol_sequence\n");
        !            32:     fprintf(stderr, " -n network_address\n");
        !            33:     fprintf(stderr, " -e endpoint\n");
        !            34:     fprintf(stderr, " -o options\n");
        !            35:     fprintf(stderr, " -u uuid\n");
        !            36:     fprintf(stderr, " -s string\n");
        !            37:     exit(1);
        !            38: }
        !            39: 
        !            40: void main(int argc, char **argv)
        !            41: {
        !            42:     RPC_STATUS status;             // returned by RPC API function
        !            43:     unsigned char * pszUuid = "12345678-1234-1234-1234-123456789ABC";
        !            44:     unsigned char * pszProtocolSequence = "ncacn_np";
        !            45:     unsigned char * pszNetworkAddress   = NULL;
        !            46:     unsigned char * pszEndpoint        = "\\pipe\\hello";
        !            47:     unsigned char * pszOptions          = NULL;
        !            48:     unsigned char * pszStringBinding   = NULL;
        !            49:     unsigned char * pszString          = "hello, world";
        !            50:     int i;
        !            51: 
        !            52:     // allow the user to override settings with command line switches
        !            53:     for (i = 1; i < argc; i++) {
        !            54:        if ((*argv[i] == '-') || (*argv[i] == '/')) {
        !            55:            switch (tolower(*(argv[i]+1))) {
        !            56:                case 'p':  // protocol sequence
        !            57:                    pszProtocolSequence = argv[++i];
        !            58:                    break;
        !            59:                case 'n':  // network address
        !            60:                    pszNetworkAddress = argv[++i];
        !            61:                    break;
        !            62:                case 'e':
        !            63:                    pszEndpoint = argv[++i];
        !            64:                    break;
        !            65:                case 'o':
        !            66:                    pszOptions = argv[++i];
        !            67:                    break;
        !            68:                case 'u':
        !            69:                    pszUuid = argv[++i];
        !            70:                    break;
        !            71:                case 's':
        !            72:                    pszString = argv[++i];
        !            73:                    break;
        !            74:                case 'h':
        !            75:                case '?':
        !            76:                default:
        !            77:                    Usage(argv[0]);
        !            78:            }
        !            79:        }
        !            80:        else
        !            81:            Usage(argv[0]);
        !            82:     }
        !            83: /* Use a convenience function to concatenate the elements of  */
        !            84: /* the string binding into the proper sequence.              */
        !            85: 
        !            86:     status = RpcStringBindingCompose(pszUuid,
        !            87:                                      pszProtocolSequence,
        !            88:                                      pszNetworkAddress,
        !            89:                                      pszEndpoint,
        !            90:                                      pszOptions,
        !            91:                                      &pszStringBinding);
        !            92:     printf("RpcStringBindingCompose returned 0x%x\n", status);
        !            93:     printf("pszStringBinding = %s\n", pszStringBinding);
        !            94:     if (status)
        !            95:        exit(2);
        !            96: 
        !            97: /* Set the binding handle that will be used to bind to the server. */
        !            98: 
        !            99:     status = RpcBindingFromStringBinding(pszStringBinding,
        !           100:                                         &hello_IfHandle);
        !           101:     printf("RpcBindingFromStringBinding returned 0x%x\n", status);
        !           102:     if (status)
        !           103:         exit(2);
        !           104: 
        !           105:     printf("Calling the remote procedure 'HelloProc'\n");
        !           106:     printf("  print the string '%s' on the server\n", pszString);
        !           107: 
        !           108:     RpcTryExcept {
        !           109:        HelloProc(pszString);  /* make call with user message */
        !           110:        printf("Calling the remote procedure 'Shutdown'\n");
        !           111:        Shutdown();                  // shut down the server side
        !           112:     }
        !           113:     RpcExcept(1) {
        !           114:        printf("Runtime library reported an exception\n");
        !           115:     }
        !           116:     RpcEndExcept
        !           117: 
        !           118: /*  The calls to the remote procedures are complete. */
        !           119: /*  Free the string and the binding handle          */
        !           120: 
        !           121:     status = RpcStringFree(&pszStringBinding); // remote calls done; unbind
        !           122:     printf("RpcStringFree returned 0x%x\n", status);
        !           123:     if (status)
        !           124:        exit(2);
        !           125: 
        !           126:     status = RpcBindingFree(&hello_IfHandle);  // remote calls done; unbind
        !           127:     printf("RpcBindingFree returned 0x%x\n", status);
        !           128:     if (status)
        !           129:        exit(2);
        !           130: 
        !           131: 
        !           132:     exit(0);
        !           133: 
        !           134: }
        !           135: 
        !           136: // ====================================================================
        !           137: //                MIDL allocate and free
        !           138: // ====================================================================
        !           139: 
        !           140: 
        !           141: void * MIDL_user_allocate(size_t len)
        !           142: {
        !           143:     return(malloc(len));
        !           144: }
        !           145: 
        !           146: void MIDL_user_free(void * ptr)
        !           147: {
        !           148:     free(ptr);
        !           149: }
        !           150: 
        !           151: /* end file helloc.c */

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