C++ (Cpp) SocketAddress::SetToLocalhost Examples

Example #1

File: SocketAddressTest.cpp Project: 32bitmicro/riscv-lldb

TEST_F (SocketAddressTest, Set)
{
    SocketAddress sa;
    ASSERT_TRUE (sa.SetToLocalhost (AF_INET, 1138));
    ASSERT_STREQ ("127.0.0.1", sa.GetIPAddress ().c_str ());
    ASSERT_EQ (1138, sa.GetPort ());

    ASSERT_TRUE (sa.SetToAnyAddress (AF_INET, 0));
    ASSERT_STREQ ("0.0.0.0", sa.GetIPAddress ().c_str ());
    ASSERT_EQ (0, sa.GetPort ());

    ASSERT_TRUE (sa.SetToLocalhost (AF_INET6, 1139));
    ASSERT_STREQ ("::1", sa.GetIPAddress ().c_str ());
    ASSERT_EQ (1139, sa.GetPort ());
}

Example #2

ConnectionStatus
ConnectionFileDescriptor::ConnectUDP (const char *host_and_port, Error *error_ptr)
{
    LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_CONNECTION));
    if (log)
        log->Printf ("%p ConnectionFileDescriptor::ConnectUDP (host/port = %s)", this, host_and_port);
    Disconnect (NULL);

    m_fd_send_type = m_fd_recv_type = eFDTypeSocketUDP;
    
    std::string host_str;
    std::string port_str;
    int32_t port = INT32_MIN;
    if (!DecodeHostAndPort (host_and_port, host_str, port_str, port, error_ptr))
        return eConnectionStatusError;

    // Setup the receiving end of the UDP connection on this localhost
    // on port zero. After we bind to port zero we can read the port.
    m_fd_recv = ::socket (AF_INET, SOCK_DGRAM, 0);
    if (m_fd_recv == -1)
    {
        // Socket creation failed...
        if (error_ptr)
            error_ptr->SetErrorToErrno();
    }
    else
    {
        // Socket was created, now lets bind to the requested port
        SocketAddress addr;
        addr.SetToLocalhost (AF_INET, 0);

        if (::bind (m_fd_recv, addr, addr.GetLength()) == -1)
        {
            // Bind failed...
            if (error_ptr)
                error_ptr->SetErrorToErrno();
            Disconnect (NULL);
        }
    }

    if (m_fd_recv == -1)
        return eConnectionStatusError;

    // At this point we have setup the recieve port, now we need to 
    // setup the UDP send socket
   
    struct addrinfo hints;
    struct addrinfo *service_info_list = NULL;
    
    ::memset (&hints, 0, sizeof(hints)); 
    hints.ai_family = AF_INET; 
    hints.ai_socktype = SOCK_DGRAM;
    int err = ::getaddrinfo (host_str.c_str(), port_str.c_str(), &hints, &service_info_list);
    if (err != 0)
    {
        if (error_ptr)
            error_ptr->SetErrorStringWithFormat("getaddrinfo(%s, %s, &hints, &info) returned error %i (%s)", 
                                                host_str.c_str(), 
                                                port_str.c_str(),
                                                err,
                                                gai_strerror(err));
        Disconnect (NULL);
        return eConnectionStatusError;        
    }
    
    for (struct addrinfo *service_info_ptr = service_info_list; 
         service_info_ptr != NULL; 
         service_info_ptr = service_info_ptr->ai_next) 
    {
        m_fd_send = ::socket (service_info_ptr->ai_family, 
                              service_info_ptr->ai_socktype,
                              service_info_ptr->ai_protocol);
        
        if (m_fd_send != -1)
        {
            m_udp_send_sockaddr = service_info_ptr;
            break;
        }
        else
            continue;
    }
    
    :: freeaddrinfo (service_info_list);

    if (m_fd_send == -1)
    {
        Disconnect (NULL);
        return eConnectionStatusError;
    }

    if (error_ptr)
        error_ptr->Clear();

    m_should_close_fd = true;
    return eConnectionStatusSuccess;
}

Example #3

ConnectionStatus
ConnectionFileDescriptor::SocketListen (uint16_t listen_port_num, Error *error_ptr)
{
    LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_CONNECTION));
    if (log)
        log->Printf ("%p ConnectionFileDescriptor::SocketListen (port = %i)", this, listen_port_num);

    Disconnect (NULL);
    m_fd_send_type = m_fd_recv_type = eFDTypeSocket;
    int listen_port = ::socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (listen_port == -1)
    {
        if (error_ptr)
            error_ptr->SetErrorToErrno();
        return eConnectionStatusError;
    }

    // enable local address reuse
    SetSocketOption (listen_port, SOL_SOCKET, SO_REUSEADDR, 1);

    SocketAddress localhost;
    if (localhost.SetToLocalhost (AF_INET, listen_port_num))
    {
        int err = ::bind (listen_port, localhost, localhost.GetLength());
        if (err == -1)
        {
            if (error_ptr)
                error_ptr->SetErrorToErrno();
            Close (listen_port, NULL);
            return eConnectionStatusError;
        }

        err = ::listen (listen_port, 1);
        if (err == -1)
        {
            if (error_ptr)
                error_ptr->SetErrorToErrno();
            Close (listen_port, NULL);
            return eConnectionStatusError;
        }

        m_fd_send = m_fd_recv = ::accept (listen_port, NULL, 0);
        if (m_fd_send == -1)
        {
            if (error_ptr)
                error_ptr->SetErrorToErrno();
            Close (listen_port, NULL);
            return eConnectionStatusError;
        }
    }

    // We are done with the listen port
    Close (listen_port, NULL);

    m_should_close_fd = true;

    // Keep our TCP packets coming without any delays.
    SetSocketOption (m_fd_send, IPPROTO_TCP, TCP_NODELAY, 1);
    if (error_ptr)
        error_ptr->Clear();
    return eConnectionStatusSuccess;
}