[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS-Plus/ThirdParty/wolfSSL/IDE/VS-AZURE-SPHERE/shared/util.h

@@ -0,0 +1,61 @@
+#ifndef _UTIL_H_
+#define _UTIL_H_
+
+#include <stdio.h>
+#include <wolfssl/ssl.h>
+#include <ifaddrs.h>
+#include <applibs/log.h>
+
+#define _GNU_SOURCE /* defines NI_NUMERICHOST */
+#ifndef NI_MAXHOST
+        #define NI_MAXHOST 256
+#endif
+
+static void util_Cleanup(int sockfd, WOLFSSL_CTX* ctx, WOLFSSL* ssl)
+{
+    wolfSSL_free(ssl);      /* Free the wolfSSL object                  */
+    wolfSSL_CTX_free(ctx);  /* Free the wolfSSL context object          */
+    wolfSSL_Cleanup();      /* Cleanup the wolfSSL environment          */
+    close(sockfd);          /* Close the connection to the server       */
+}
+
+/* Displays each AF_INET interface and it's IP Address
+*  Return: WOLFSSL_SUCCESS if print is successful else WOLFSSL_FAILURE
+*/
+static int util_PrintIfAddr(void)
+{
+    char host[NI_MAXHOST];
+    struct ifaddrs* ifaddr, * nxt;
+    int family, info, n;
+
+    /* Get a linked list of 'struct ifaddrs*' */
+    if (getifaddrs(&ifaddr) != 0) {
+        fprintf(stderr, "ERROR: Getting network interface and IP address");
+        return WOLFSSL_FAILURE;
+    }
+    printf("\nInterface   IP Address\n");
+    /* Traverse ifaddr linked list using nxt */
+    for (nxt = ifaddr; nxt != NULL; nxt = nxt->ifa_next) {
+        if (nxt->ifa_addr == NULL)
+            continue;
+        family = nxt->ifa_addr->sa_family;
+        /* Display the address of each AF_INET* interface */
+        if (family == AF_INET) {
+            info = getnameinfo(nxt->ifa_addr, sizeof(struct sockaddr_in),
+                    host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+            if (info != 0) {
+                    fprintf(stderr, "Failed to getnameinfo");
+                    freeifaddrs(ifaddr);
+                    return WOLFSSL_FAILURE;
+            }
+            /* Determine amount of space, n, to justify IP Address */
+            n = (int)strlen("Interface   ") - (int)strlen(nxt->ifa_name);
+            n = (n > 0) ? n : 1; /* Set space to 1 if n is negative */
+            printf("%s %*c%s>\n", nxt->ifa_name, n, '<', host);
+        }
+    }
+    printf("\n");
+    freeifaddrs(ifaddr);
+    return WOLFSSL_SUCCESS;
+}
+#endif