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Question

我正在编写一个RPC字典程序。该程序已成功编译，但运行时出现以下错误：

call failed: RPC: Can't encode arguments
Segmentation fault (core dumped)

这是我的文件：

dict.x

program DICT_PROG{
    version DICT_VER{
        string SEARCH_DICT(string)=1;   /*procedure number 1*/
        string INSERT_DICT(string)=2;   /*procedure number 2*/
        string DELETE_DICT(string)=3;   /*procedure number 3*/
    }=1;    /*version number 1*/
}=0x34343434;   /*program number 1*/

client.c

#include "dic.h"
#include <stdio.h>

void
dict_prog_1(char *host)
{
    CLIENT *clnt;
    char * *result_1;
    char * search_dict_1_arg;
    char * *result_2;
    char * insert_dict_1_arg;
    char * *result_3;
    char * delete_dict_1_arg;

    int opt;
    int leave=0;

#ifndef DEBUG
    clnt = clnt_create (host, DICT_PROG, DICT_VER, "tcp");
    if (clnt == NULL) {
        clnt_pcreateerror (host);
        exit (1);
    }
#endif  /* DEBUG */

    printf("DICTIONARY RPC PROGRAM");
    puts("");
    do{
        printf("CHOOSE AN OPERATION:\n");
        printf("1) INSERT \n2) SEARCH \n3) DELETE \n4) EXIT \n");
        printf("YOUR CHOICE:");
        scanf("%d",&opt);

        switch(opt){
            case 1:
                result_1 = search_dict_1(&search_dict_1_arg, clnt);
                if (result_1 == (char **) NULL) {
                    clnt_perror (clnt, "call failed");
                }
                printf("%s",*result_1);
                break;

            case 2:
                result_2 = insert_dict_1(&insert_dict_1_arg, clnt);
                if (result_2 == (char **) NULL) {
                    clnt_perror (clnt, "call failed");
                }
                printf("%s",*result_2);
                break;

            case 3: 
                result_3 = delete_dict_1(&delete_dict_1_arg, clnt);
                if (result_3 == (char **) NULL) {
                    clnt_perror (clnt, "call failed");
                }
                printf("%s",*result_3);
                break;

            default:
                printf("\nINVALID OPERATION");  
        }

    }while(leave != 1) ;





#ifndef DEBUG
    clnt_destroy (clnt);
#endif   /* DEBUG */
}


int
main (int argc, char *argv[])
{
    char *host;

    if (argc < 2) {
        printf ("usage: %s server_host\n", argv[0]);
        exit (1);
    }
    host = argv[1];


    dict_prog_1 (host);

exit (0);
}

我用 rpcgen 从 dict.x 生成了其他文件。由于我在 dict.x 中使用的所有数据类型（字符串）都是原始数据，因此未生成XDR文件。我不知道为什么会收到此错误。如果您需要更多信息，请随时询问。