zs39 opened a new pull request, #3282:
URL: https://github.com/apache/nuttx-apps/pull/3282
## Summary
The system checks connectivity with the input IP address; if no IP address
is provided, it defaults to checking DNS server connectivity.
## Impact
N/A
## Testing
Use the following test cases for testing.
```
/****************************************************************************
* apps/examples/hello/hello_main.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#ifdef CONFIG_NETUTILS_PING
#include "netutils/netlib.h"
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* hello_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
printf("Hello, World!!\n");
#ifdef CONFIG_NETUTILS_PING
int replies;
int timeout = 100; /* 1 second in milliseconds */
int retry = 10; /* 3 ping attempts */
printf("\n=== Network Connectivity Test ===\n");
/* Test case 1: Ping a specific IP address */
replies = netlib_check_ipconnectivity("223.5.5.5", timeout, retry);
if (replies > 0)
{
printf("SUCCESS - Received %d/%d replies\n", replies, retry);
}
else if (replies == 0)
{
printf("FAILED - No replies received\n");
}
else
{
printf("ERROR - Error code: %d\n", replies);
}
#ifdef CONFIG_NETDB_DNSSERVER_IPv4ADDR
/* Test case 2: Ping default DNS server (from config) */
printf("\n=== Test Default DNS Server ===\n");
replies = netlib_check_ipconnectivity(NULL, timeout, retry);
if (replies > 0)
{
printf("SUCCESS - Received %d/%d replies\n", replies, retry);
}
else if (replies == 0)
{
printf("FAILED - No replies received\n");
}
else
{
printf("ERROR - Error code: %d\n", replies);
}
#else
printf("\nDefault DNS server test skipped (CONFIG_NETDB_DNSSERVER_IPv4ADDR
not configured)\n");
#endif
#else
printf("\nNetwork connectivity test is not available\n");
printf("(CONFIG_NETUTILS_PING is not enabled)\n");
#endif
return 0;
}
```
The execution results are as follows
```
nsh> hello
Hello, World!!
=== Network Connectivity Test ===
SUCCESS - Received 10/10 replies
=== Test Default DNS Server ===
SUCCESS - Received 10/10 replies
```
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