OpenThread Example: open UDP socket a boot

main.c

/*
 *  Copyright (c) 2018, The OpenThread Authors.
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */

#include <assert.h>
#include <stdio.h>
#include <string.h>

#include <openthread/config.h>
#include <openthread/ip6.h>
#include <openthread/link.h>
#include <openthread/tasklet.h>
#include <openthread/thread.h>
#include <openthread/udp.h>

#include "openthread-system.h"

void otTaskletsSignalPending(otInstance *aInstance)
{
    OT_UNUSED_VARIABLE(aInstance);
}

void handleUdpReceive(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo)
{
    OT_UNUSED_VARIABLE(aContext);
    OT_UNUSED_VARIABLE(aMessage);
    OT_UNUSED_VARIABLE(aMessageInfo);
}

int main(int argc, char *argv[])
{
    otInstance *sInstance;
    otUdpSocket socket;
    otSockAddr  sockaddr;
    otError     error;

    otSysInit(argc, argv);
    sInstance = otInstanceInitSingle();
    assert(sInstance);

    error = otLinkSetChannel(sInstance, 11);
    assert(error == OT_ERROR_NONE);

    error = otLinkSetPanId(sInstance, 0xface);
    assert(error == OT_ERROR_NONE);

    error = otIp6SetEnabled(sInstance, true);
    assert(error == OT_ERROR_NONE);

    error = otThreadSetEnabled(sInstance, true);
    assert(error == OT_ERROR_NONE);

    error = otUdpOpen(sInstance, &socket, handleUdpReceive, NULL);
    assert(error == OT_ERROR_NONE);

    memset(&sockaddr, 0, sizeof(sockaddr));
    sockaddr.mPort = 1234;

    error = otUdpBind(&socket, &sockaddr);
    assert(error == OT_ERROR_NONE);

    while (1)
    {
        otTaskletsProcess(sInstance);
        otSysProcessDrivers(sInstance);
    }

    return 0;
}