File content as of revision 96:656011e49d9f:

/* Socket
 * Copyright (c) 2015 ARM Limited
 *
 * Licensed 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.
 */

#ifndef UDPSOCKET_H
#define UDPSOCKET_H

#include "Socket.h"
#include "NetworkInterface.h"

/** UDP Socket
 */
class UDPSocket : public Socket {
public:
    /** UDPSocket lifetime
     */
    UDPSocket();
    UDPSocket(NetworkInterface *iface);

    /** Open the socket
     *  @param iface    Interface to open socket on
     */
    virtual int open(NetworkInterface *iface);
    
    /** Bind a UDP Server Socket to a specific port
     *  @param port     The port to listen for incoming connections on
     *  @return         0 on success, negative on failure.
     */
    int bind(uint16_t port);

    /** Bind a UDP Server Socket to a local address
     *  @param address  The null-terminated address to listen for incoming connections on
     *  @param port     The port to listen for incoming connections on
     *  @return         0 on success, negative on failure.
     */
    int bind(const char *address, uint16_t port);

    /** Bind a UDP Server Socket to a local address
     *  @param address  The SocketAddress to listen for incoming connections on
     *  @return         0 on success, negative on failure.
     */
    int bind(const SocketAddress &address);

    /** Send a packet to a remote endpoint
     *  @param host     The host to connect to. It can either be an IP Address
     *                  or a hostname that will be resolved with DNS
     *  @param port     The remote port
     *  @param data     The packet to be sent
     *  @param size     The length of the packet to be sent
     *  @return         The number of written bytes on success, negative on failure
     */
    int sendto(const char *host, uint16_t port, const void *data, unsigned size);

    /** Send a packet to a remote endpoint
     *  @param address  The remote SocketAddress
     *  @param data     The packet to be sent
     *  @param size     The length of the packet to be sent
     *  @return         The number of written bytes on success, negative on failure
     */
    int sendto(const SocketAddress &address, const void *data, unsigned size);

    /** Receive a packet from a remote endpoint
     *  @param address  Destination for the remote SocketAddress or null
     *  @param buffer   The buffer for storing the incoming packet data
     *                  If a packet is too long to fit in the supplied buffer,
     *                  excess bytes are discarded
     *  @param size     The length of the buffer
     *  @return         The number of received bytes on success, negative on failure
     */
    int recvfrom(SocketAddress *address, void *buffer, unsigned size);
};

#endif