Marco Zecchini / Mbed OS Example_RTOS

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mbed-os/features/netsocket/UDPSocket.h@0:9fca2b23d0ba, 2019-02-23 (annotated)

Committer:
marcozecchini
Date:
Sat Feb 23 12:13:36 2019 +0000
Revision:
0:9fca2b23d0ba
final commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
marcozecchini 0:9fca2b23d0ba 1
marcozecchini 0:9fca2b23d0ba 2 /** \addtogroup netsocket */
marcozecchini 0:9fca2b23d0ba 3 /** @{*/
marcozecchini 0:9fca2b23d0ba 4 /* UDPSocket
marcozecchini 0:9fca2b23d0ba 5 * Copyright (c) 2015 ARM Limited
marcozecchini 0:9fca2b23d0ba 6 *
marcozecchini 0:9fca2b23d0ba 7 * Licensed under the Apache License, Version 2.0 (the "License");
marcozecchini 0:9fca2b23d0ba 8 * you may not use this file except in compliance with the License.
marcozecchini 0:9fca2b23d0ba 9 * You may obtain a copy of the License at
marcozecchini 0:9fca2b23d0ba 10 *
marcozecchini 0:9fca2b23d0ba 11 * http://www.apache.org/licenses/LICENSE-2.0
marcozecchini 0:9fca2b23d0ba 12 *
marcozecchini 0:9fca2b23d0ba 13 * Unless required by applicable law or agreed to in writing, software
marcozecchini 0:9fca2b23d0ba 14 * distributed under the License is distributed on an "AS IS" BASIS,
marcozecchini 0:9fca2b23d0ba 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
marcozecchini 0:9fca2b23d0ba 16 * See the License for the specific language governing permissions and
marcozecchini 0:9fca2b23d0ba 17 * limitations under the License.
marcozecchini 0:9fca2b23d0ba 18 */
marcozecchini 0:9fca2b23d0ba 19
marcozecchini 0:9fca2b23d0ba 20 #ifndef UDPSOCKET_H
marcozecchini 0:9fca2b23d0ba 21 #define UDPSOCKET_H
marcozecchini 0:9fca2b23d0ba 22
marcozecchini 0:9fca2b23d0ba 23 #include "netsocket/Socket.h"
marcozecchini 0:9fca2b23d0ba 24 #include "netsocket/NetworkStack.h"
marcozecchini 0:9fca2b23d0ba 25 #include "netsocket/NetworkInterface.h"
marcozecchini 0:9fca2b23d0ba 26 #include "rtos/EventFlags.h"
marcozecchini 0:9fca2b23d0ba 27
marcozecchini 0:9fca2b23d0ba 28
marcozecchini 0:9fca2b23d0ba 29 /** UDP socket
marcozecchini 0:9fca2b23d0ba 30 */
marcozecchini 0:9fca2b23d0ba 31 class UDPSocket : public Socket {
marcozecchini 0:9fca2b23d0ba 32 public:
marcozecchini 0:9fca2b23d0ba 33 /** Create an uninitialized socket
marcozecchini 0:9fca2b23d0ba 34 *
marcozecchini 0:9fca2b23d0ba 35 * Must call open to initialize the socket on a network stack.
marcozecchini 0:9fca2b23d0ba 36 */
marcozecchini 0:9fca2b23d0ba 37 UDPSocket();
marcozecchini 0:9fca2b23d0ba 38
marcozecchini 0:9fca2b23d0ba 39 /** Create a socket on a network interface
marcozecchini 0:9fca2b23d0ba 40 *
marcozecchini 0:9fca2b23d0ba 41 * Creates and opens a socket on the network stack of the given
marcozecchini 0:9fca2b23d0ba 42 * network interface.
marcozecchini 0:9fca2b23d0ba 43 *
marcozecchini 0:9fca2b23d0ba 44 * @param stack Network stack as target for socket
marcozecchini 0:9fca2b23d0ba 45 */
marcozecchini 0:9fca2b23d0ba 46 template <typename S>
marcozecchini 0:9fca2b23d0ba 47 UDPSocket(S *stack)
marcozecchini 0:9fca2b23d0ba 48 : _pending(0), _event_flag(0)
marcozecchini 0:9fca2b23d0ba 49 {
marcozecchini 0:9fca2b23d0ba 50 open(stack);
marcozecchini 0:9fca2b23d0ba 51 }
marcozecchini 0:9fca2b23d0ba 52
marcozecchini 0:9fca2b23d0ba 53 /** Destroy a socket
marcozecchini 0:9fca2b23d0ba 54 *
marcozecchini 0:9fca2b23d0ba 55 * Closes socket if the socket is still open
marcozecchini 0:9fca2b23d0ba 56 */
marcozecchini 0:9fca2b23d0ba 57 virtual ~UDPSocket();
marcozecchini 0:9fca2b23d0ba 58
marcozecchini 0:9fca2b23d0ba 59 /** Send a packet over a UDP socket
marcozecchini 0:9fca2b23d0ba 60 *
marcozecchini 0:9fca2b23d0ba 61 * Sends data to the specified address specified by either a domain name
marcozecchini 0:9fca2b23d0ba 62 * or an IP address and port. Returns the number of bytes sent from the
marcozecchini 0:9fca2b23d0ba 63 * buffer.
marcozecchini 0:9fca2b23d0ba 64 *
marcozecchini 0:9fca2b23d0ba 65 * By default, sendto blocks until data is sent. If socket is set to
marcozecchini 0:9fca2b23d0ba 66 * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned
marcozecchini 0:9fca2b23d0ba 67 * immediately.
marcozecchini 0:9fca2b23d0ba 68 *
marcozecchini 0:9fca2b23d0ba 69 * @param host Hostname of the remote host
marcozecchini 0:9fca2b23d0ba 70 * @param port Port of the remote host
marcozecchini 0:9fca2b23d0ba 71 * @param data Buffer of data to send to the host
marcozecchini 0:9fca2b23d0ba 72 * @param size Size of the buffer in bytes
marcozecchini 0:9fca2b23d0ba 73 * @return Number of sent bytes on success, negative error
marcozecchini 0:9fca2b23d0ba 74 * code on failure
marcozecchini 0:9fca2b23d0ba 75 */
marcozecchini 0:9fca2b23d0ba 76 nsapi_size_or_error_t sendto(const char *host, uint16_t port,
marcozecchini 0:9fca2b23d0ba 77 const void *data, nsapi_size_t size);
marcozecchini 0:9fca2b23d0ba 78
marcozecchini 0:9fca2b23d0ba 79 /** Send a packet over a UDP socket
marcozecchini 0:9fca2b23d0ba 80 *
marcozecchini 0:9fca2b23d0ba 81 * Sends data to the specified address. Returns the number of bytes
marcozecchini 0:9fca2b23d0ba 82 * sent from the buffer.
marcozecchini 0:9fca2b23d0ba 83 *
marcozecchini 0:9fca2b23d0ba 84 * By default, sendto blocks until data is sent. If socket is set to
marcozecchini 0:9fca2b23d0ba 85 * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned
marcozecchini 0:9fca2b23d0ba 86 * immediately.
marcozecchini 0:9fca2b23d0ba 87 *
marcozecchini 0:9fca2b23d0ba 88 * @param address The SocketAddress of the remote host
marcozecchini 0:9fca2b23d0ba 89 * @param data Buffer of data to send to the host
marcozecchini 0:9fca2b23d0ba 90 * @param size Size of the buffer in bytes
marcozecchini 0:9fca2b23d0ba 91 * @return Number of sent bytes on success, negative error
marcozecchini 0:9fca2b23d0ba 92 * code on failure
marcozecchini 0:9fca2b23d0ba 93 */
marcozecchini 0:9fca2b23d0ba 94 nsapi_size_or_error_t sendto(const SocketAddress &address,
marcozecchini 0:9fca2b23d0ba 95 const void *data, nsapi_size_t size);
marcozecchini 0:9fca2b23d0ba 96
marcozecchini 0:9fca2b23d0ba 97 /** Receive a packet over a UDP socket
marcozecchini 0:9fca2b23d0ba 98 *
marcozecchini 0:9fca2b23d0ba 99 * Receives data and stores the source address in address if address
marcozecchini 0:9fca2b23d0ba 100 * is not NULL. Returns the number of bytes received into the buffer.
marcozecchini 0:9fca2b23d0ba 101 *
marcozecchini 0:9fca2b23d0ba 102 * By default, recvfrom blocks until data is sent. If socket is set to
marcozecchini 0:9fca2b23d0ba 103 * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned
marcozecchini 0:9fca2b23d0ba 104 * immediately.
marcozecchini 0:9fca2b23d0ba 105 *
marcozecchini 0:9fca2b23d0ba 106 * @param address Destination for the source address or NULL
marcozecchini 0:9fca2b23d0ba 107 * @param data Destination buffer for data received from the host
marcozecchini 0:9fca2b23d0ba 108 * @param size Size of the buffer in bytes
marcozecchini 0:9fca2b23d0ba 109 * @return Number of received bytes on success, negative error
marcozecchini 0:9fca2b23d0ba 110 * code on failure
marcozecchini 0:9fca2b23d0ba 111 */
marcozecchini 0:9fca2b23d0ba 112 nsapi_size_or_error_t recvfrom(SocketAddress *address,
marcozecchini 0:9fca2b23d0ba 113 void *data, nsapi_size_t size);
marcozecchini 0:9fca2b23d0ba 114
marcozecchini 0:9fca2b23d0ba 115 protected:
marcozecchini 0:9fca2b23d0ba 116 virtual nsapi_protocol_t get_proto();
marcozecchini 0:9fca2b23d0ba 117 virtual void event();
marcozecchini 0:9fca2b23d0ba 118
marcozecchini 0:9fca2b23d0ba 119 volatile unsigned _pending;
marcozecchini 0:9fca2b23d0ba 120 rtos::EventFlags _event_flag;
marcozecchini 0:9fca2b23d0ba 121 };
marcozecchini 0:9fca2b23d0ba 122
marcozecchini 0:9fca2b23d0ba 123
marcozecchini 0:9fca2b23d0ba 124 #endif
marcozecchini 0:9fca2b23d0ba 125
marcozecchini 0:9fca2b23d0ba 126 /** @}*/