File content as of revision 4:15b58c119a0a:

/* Copyright (C) 2012 mbed.org, MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include "UDPSocket.h"

#include <string>
#include <algorithm>

UDPSocket::UDPSocket() {

}

int UDPSocket::init(void) {
    return init_socket(SOCK_DGRAM, IPPROTO_UDP);
}

// Server initialization
int UDPSocket::bind(int port) {
    if (init_socket(SOCK_DGRAM, IPPROTO_UDP) < 0) {
        return -1;
    }

    sockaddr_in localHost;
    std::memset(&localHost, 0, sizeof(sockaddr_in));

    localHost.sin_family = AF_INET;
    localHost.sin_port = htons(port);
    localHost.sin_addr.s_addr = 0;
    // sockaddr localHost;
    // localHost.family = AF_INET;
    // localHost.data[0] = (port & 0xFF00)>> 8;
    // localHost.data[1] = (port & 0x00FF);
    // localHost.data[2] = 0;
    // localHost.data[3] = 0;
    // localHost.data[4] = 0;
    // localHost.data[5] = 0;

    if (_cc3000_module->_socket.bind(_sock_fd, (sockaddr *)&localHost, sizeof(sockaddr_in)) != 0) {
#if (CC3000_DEBUG == 1)
        printf("DEBUG: Failed to bind a socket (udp). Closing socket.\n");
#endif
        _cc3000_module->_socket.closesocket(_sock_fd);
        _sock_fd = -1;
        return -1;
    }
// #if (CC3000_DEBUG == 1)
//     printf("DEBUG: local add: %d\n",localHost.sin_addr.s_addr);
// #endif
    return 0;
}

// -1 if unsuccessful, else number of bytes written
int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
{
    if (_sock_fd < 0) {
        return -1;
    }

    if (!_blocking) {
        TimeInterval timeout(_timeout);
        if (wait_writable(timeout) != 0) {
#if (CC3000_DEBUG == 1)
            printf("DEBUG: The socket is not writeable. _sock_fd: %d.\n", _sock_fd);
#endif
            return 0;
        }
    }

    return _cc3000_module->_socket.sendto(_sock_fd, packet, length, 0, (sockaddr *)&remote._remote_host, sizeof(sockaddr));
}

// -1 if unsuccessful, else number of bytes received
int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
{
    if (_sock_fd < 0) {
        return -1;
    }

    if (!_blocking) {
        TimeInterval timeout(_timeout);
        if (wait_readable(timeout) != 0) {
#if (CC3000_DEBUG == 1)
            printf("DEBUG: The socket is not readable. _sock_fd: %d.\n", _sock_fd);
#endif
            return 0;
        }
    }

    remote.reset_address();
    socklen_t remote_host_length = sizeof(remote._remote_host);

    return _cc3000_module->_socket.recvfrom(_sock_fd, buffer, length, 0, (sockaddr *)&remote._remote_host, &remote_host_length);
}