NetworkSocketAPI / NetworkSocketAPI

Base class for IP Based Networking Libraries

Dependencies:   DnsQuery

Dependents:   TempTower BSDInterfaceTests HelloBSDInterface ESP8266InterfaceTests ... more

For a complete getting started guide see the wiki...

Network Socket API

The Network Socket API provides a common interface for using sockets on network devices. The API provides a simple class-based interface that should be familiar to users experienced with other socket APIs. Additionally, the API provides a simple interface for implementing network devices, making it easy to connect hardware agnostic programs to new devices.

Network Interfaces

The NetworkInterface provides an abstract class for network devices that support sockets. Devices should provide a DeviceInterface class that inherits this interface and adds implementation specific methods for using the device. A NetworkInterface must be provided to a Socket constructor to open a socket on the interface. Currently two subclasses are defined for common devices, EthernetInterface and WiFiInterface.

Sockets

The Socket class is used for managing network sockets. Once opened, the socket provides a pipe through which data can sent and recieved to a specific endpoint. The socket class can be instantiated as either a TCPSocket or a UDPSocket which defines the protocol used for the connection.

TCPSocket.h@80:9c6673c93082, 2016-04-05 (annotated)

Committer:
Christopher Haster
Date:
Tue Apr 05 12:02:56 2016 -0500
Revision:
80:9c6673c93082
Parent:
79:43a7e8c0d6cc
Child:
81:1600369a29dd
Added support for DNS resolution

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 78:0914f9b9b24b 1 /* Socket
Christopher Haster 78:0914f9b9b24b 2 * Copyright (c) 2015 ARM Limited
Christopher Haster 72:6a8b52ee83ed 3 *
Christopher Haster 78:0914f9b9b24b 4 * Licensed under the Apache License, Version 2.0 (the "License");
Christopher Haster 78:0914f9b9b24b 5 * you may not use this file except in compliance with the License.
Christopher Haster 78:0914f9b9b24b 6 * You may obtain a copy of the License at
Christopher Haster 72:6a8b52ee83ed 7 *
Christopher Haster 78:0914f9b9b24b 8 * http://www.apache.org/licenses/LICENSE-2.0
Christopher Haster 72:6a8b52ee83ed 9 *
Christopher Haster 78:0914f9b9b24b 10 * Unless required by applicable law or agreed to in writing, software
Christopher Haster 78:0914f9b9b24b 11 * distributed under the License is distributed on an "AS IS" BASIS,
Christopher Haster 78:0914f9b9b24b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Christopher Haster 78:0914f9b9b24b 13 * See the License for the specific language governing permissions and
Christopher Haster 78:0914f9b9b24b 14 * limitations under the License.
Christopher Haster 72:6a8b52ee83ed 15 */
Christopher Haster 72:6a8b52ee83ed 16
Christopher Haster 72:6a8b52ee83ed 17 #ifndef TCPSOCKET_H
Christopher Haster 72:6a8b52ee83ed 18 #define TCPSOCKET_H
Christopher Haster 72:6a8b52ee83ed 19
Christopher Haster 72:6a8b52ee83ed 20 #include "Socket.h"
Christopher Haster 77:b66a6984ed2d 21 #include "NetworkInterface.h"
Christopher Haster 72:6a8b52ee83ed 22
Christopher Haster 72:6a8b52ee83ed 23 /**
Christopher Haster 72:6a8b52ee83ed 24 TCP socket connection
Christopher Haster 72:6a8b52ee83ed 25 */
Christopher Haster 72:6a8b52ee83ed 26 class TCPSocket : public Socket {
Christopher Haster 72:6a8b52ee83ed 27 public:
Christopher Haster 72:6a8b52ee83ed 28 /** TCP socket lifetime
Christopher Haster 72:6a8b52ee83ed 29 */
Christopher Haster 77:b66a6984ed2d 30 TCPSocket(NetworkInterface *iface);
Christopher Haster 72:6a8b52ee83ed 31
Christopher Haster 72:6a8b52ee83ed 32 /** Connects this TCP socket to the server
Christopher Haster 72:6a8b52ee83ed 33 \param host The host to connect to. It can either be an IP Address
Christopher Haster 72:6a8b52ee83ed 34 or a hostname that will be resolved with DNS
Christopher Haster 72:6a8b52ee83ed 35 \param port The host's port to connect to
Christopher Haster 72:6a8b52ee83ed 36 \return 0 on success, negative on failure
Christopher Haster 72:6a8b52ee83ed 37 */
Christopher Haster 79:43a7e8c0d6cc 38 int connect(const char *host, uint16_t port);
Christopher Haster 75:dea0cdb42241 39
Christopher Haster 75:dea0cdb42241 40 /** Connects this TCP socket to the server
Christopher Haster 75:dea0cdb42241 41 \param address SocketAddress to connect to
Christopher Haster 75:dea0cdb42241 42 \return 0 on success, negative on failure
Christopher Haster 75:dea0cdb42241 43 */
Christopher Haster 80:9c6673c93082 44 int connect(const SocketAddress &address);
Christopher Haster 72:6a8b52ee83ed 45
Christopher Haster 72:6a8b52ee83ed 46 /** Check if the socket is connected
Christopher Haster 72:6a8b52ee83ed 47 \return true if connected, false otherwise
Christopher Haster 72:6a8b52ee83ed 48 */
Christopher Haster 76:bbe51641f405 49 bool is_connected();
Christopher Haster 72:6a8b52ee83ed 50
Christopher Haster 72:6a8b52ee83ed 51 /** Send data to the remote host
Christopher Haster 72:6a8b52ee83ed 52 \param data The buffer to send to the host
Christopher Haster 72:6a8b52ee83ed 53 \param size The length of the buffer to send
Christopher Haster 72:6a8b52ee83ed 54 \return Number of written bytes on success, negative on failure
Christopher Haster 76:bbe51641f405 55 */
Christopher Haster 72:6a8b52ee83ed 56 int send(const void *data, unsigned size);
Christopher Haster 72:6a8b52ee83ed 57
Christopher Haster 72:6a8b52ee83ed 58 /** Receive data from the remote host
Christopher Haster 72:6a8b52ee83ed 59 \param data The buffer in which to store the data received from the host
Christopher Haster 72:6a8b52ee83ed 60 \param size The maximum length of the buffer
Christopher Haster 72:6a8b52ee83ed 61 \return Number of received bytes on success, negative on failure
Christopher Haster 76:bbe51641f405 62 */
Christopher Haster 73:968f7b32278f 63 int recv(void *data, unsigned size);
Christopher Haster 73:968f7b32278f 64
Christopher Haster 73:968f7b32278f 65 /** Register a callback on when send is ready
Christopher Haster 73:968f7b32278f 66 \param callback Function to call when send will succeed, may be called in
Christopher Haster 73:968f7b32278f 67 interrupt context.
Christopher Haster 73:968f7b32278f 68 */
Christopher Haster 79:43a7e8c0d6cc 69 void attach_send(mbed::FuncPtr<void()> callback);
Christopher Haster 73:968f7b32278f 70
Christopher Haster 73:968f7b32278f 71 /** Register a callback on when recv is ready
Christopher Haster 73:968f7b32278f 72 \param callback Function to call when recv will succeed, may be called in
Christopher Haster 73:968f7b32278f 73 interrupt context.
Christopher Haster 73:968f7b32278f 74 */
Christopher Haster 79:43a7e8c0d6cc 75 void attach_recv(mbed::FuncPtr<void()> callback);
Christopher Haster 79:43a7e8c0d6cc 76
Christopher Haster 79:43a7e8c0d6cc 77 private:
Christopher Haster 79:43a7e8c0d6cc 78 friend class TCPServer;
Christopher Haster 72:6a8b52ee83ed 79 };
Christopher Haster 72:6a8b52ee83ed 80
Christopher Haster 72:6a8b52ee83ed 81 #endif