C++ (Cpp) MessageInfo::SetSockAddr примеры использования

Пример #1

Файл: udp6.cpp Проект: lanyuwen/openthread

otError UdpSocket::SendTo(Message &aMessage, const MessageInfo &aMessageInfo)
{
    otError error = OT_ERROR_NONE;
    MessageInfo messageInfoLocal;
    UdpHeader udpHeader;

    messageInfoLocal = aMessageInfo;

    if (messageInfoLocal.GetSockAddr().IsUnspecified())
    {
        messageInfoLocal.SetSockAddr(GetSockName().GetAddress());
    }

    if (GetSockName().mPort == 0)
    {
        GetSockName().mPort = static_cast<Udp *>(mTransport)->GetEphemeralPort();
    }

    if (messageInfoLocal.GetPeerAddr().IsUnspecified())
    {
        VerifyOrExit(!GetPeerName().GetAddress().IsUnspecified(), error = OT_ERROR_INVALID_ARGS);

        messageInfoLocal.SetPeerAddr(GetPeerName().GetAddress());
    }

    if (messageInfoLocal.mPeerPort == 0)
    {
        VerifyOrExit(GetPeerName().mPort != 0, error = OT_ERROR_INVALID_ARGS);
        messageInfoLocal.mPeerPort = GetPeerName().mPort;
    }

    udpHeader.SetSourcePort(GetSockName().mPort);
    udpHeader.SetDestinationPort(messageInfoLocal.mPeerPort);
    udpHeader.SetLength(sizeof(udpHeader) + aMessage.GetLength());
    udpHeader.SetChecksum(0);

    SuccessOrExit(error = aMessage.Prepend(&udpHeader, sizeof(udpHeader)));
    aMessage.SetOffset(0);
    SuccessOrExit(error = static_cast<Udp *>(mTransport)->SendDatagram(aMessage, messageInfoLocal, kProtoUdp));

exit:
    return error;
}