apps/exchangestring/components/Server/src/main.c

/*
 * Copyright 2017, Data61, CSIRO (ABN 41 687 119 230)
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <assert.h>
#include <camkes.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char *a_exchange(const char *input, char **output, char **joint)
{
    char *reply = strdup("This is a string from server.");
    *output = malloc(30);
    strncpy(*output, reply, 30);
    (*output)[29] = '\0';

    printf("Server input: %s\n", input);
    printf("Server joint: %s\n", *joint);

    free(*joint);

    *joint = malloc(50);
    strcpy(*joint, input);
    strcpy(*joint + strlen(input), reply);

    return reply;
}