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.cpp@82:97d166c4a193, 2016-04-05 (annotated)
- Committer:
- Christopher Haster
- Date:
- Tue Apr 05 13:09:43 2016 -0500
- Revision:
- 82:97d166c4a193
- Parent:
- 81:1600369a29dd
- Child:
- 87:94e2cf3a06be
Added temporary polling for blocking sockets
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Christopher Haster |
79:43a7e8c0d6cc | 1 | /* Socket |
Christopher Haster |
79:43a7e8c0d6cc | 2 | * Copyright (c) 2015 ARM Limited |
Christopher Haster |
79:43a7e8c0d6cc | 3 | * |
Christopher Haster |
79:43a7e8c0d6cc | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
Christopher Haster |
79:43a7e8c0d6cc | 5 | * you may not use this file except in compliance with the License. |
Christopher Haster |
79:43a7e8c0d6cc | 6 | * You may obtain a copy of the License at |
Christopher Haster |
79:43a7e8c0d6cc | 7 | * |
Christopher Haster |
79:43a7e8c0d6cc | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Christopher Haster |
79:43a7e8c0d6cc | 9 | * |
Christopher Haster |
79:43a7e8c0d6cc | 10 | * Unless required by applicable law or agreed to in writing, software |
Christopher Haster |
79:43a7e8c0d6cc | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
Christopher Haster |
79:43a7e8c0d6cc | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
Christopher Haster |
79:43a7e8c0d6cc | 13 | * See the License for the specific language governing permissions and |
Christopher Haster |
79:43a7e8c0d6cc | 14 | * limitations under the License. |
Christopher Haster |
79:43a7e8c0d6cc | 15 | */ |
Christopher Haster |
79:43a7e8c0d6cc | 16 | |
Christopher Haster |
79:43a7e8c0d6cc | 17 | #include "TCPSocket.h" |
Christopher Haster |
82:97d166c4a193 | 18 | #include "Timer.h" |
Christopher Haster |
79:43a7e8c0d6cc | 19 | |
Christopher Haster |
79:43a7e8c0d6cc | 20 | TCPSocket::TCPSocket(NetworkInterface *iface) |
Christopher Haster |
79:43a7e8c0d6cc | 21 | : Socket(iface, NetworkInterface::TCP) |
Christopher Haster |
79:43a7e8c0d6cc | 22 | { |
Christopher Haster |
79:43a7e8c0d6cc | 23 | } |
Christopher Haster |
79:43a7e8c0d6cc | 24 | |
Christopher Haster |
80:9c6673c93082 | 25 | int TCPSocket::connect(const SocketAddress &addr) |
Christopher Haster |
79:43a7e8c0d6cc | 26 | { |
Christopher Haster |
79:43a7e8c0d6cc | 27 | if (!_socket) { |
Christopher Haster |
79:43a7e8c0d6cc | 28 | return NSAPI_ERROR_NO_SOCKET; |
Christopher Haster |
79:43a7e8c0d6cc | 29 | } |
Christopher Haster |
79:43a7e8c0d6cc | 30 | |
Christopher Haster |
79:43a7e8c0d6cc | 31 | return _iface->socket_connect(_socket, addr); |
Christopher Haster |
79:43a7e8c0d6cc | 32 | } |
Christopher Haster |
79:43a7e8c0d6cc | 33 | |
Christopher Haster |
79:43a7e8c0d6cc | 34 | int TCPSocket::connect(const char *host, uint16_t port) |
Christopher Haster |
79:43a7e8c0d6cc | 35 | { |
Christopher Haster |
80:9c6673c93082 | 36 | SocketAddress addr(_iface, host, port); |
Christopher Haster |
79:43a7e8c0d6cc | 37 | if (!addr.get_ip_address()) { |
Christopher Haster |
79:43a7e8c0d6cc | 38 | return NSAPI_ERROR_DNS_FAILURE; |
Christopher Haster |
79:43a7e8c0d6cc | 39 | } |
Christopher Haster |
79:43a7e8c0d6cc | 40 | |
Christopher Haster |
79:43a7e8c0d6cc | 41 | return connect(addr); |
Christopher Haster |
79:43a7e8c0d6cc | 42 | } |
Christopher Haster |
79:43a7e8c0d6cc | 43 | |
Christopher Haster |
79:43a7e8c0d6cc | 44 | bool TCPSocket::is_connected() |
Christopher Haster |
79:43a7e8c0d6cc | 45 | { |
Christopher Haster |
79:43a7e8c0d6cc | 46 | return _socket && _iface->socket_is_connected(_socket); |
Christopher Haster |
79:43a7e8c0d6cc | 47 | } |
Christopher Haster |
79:43a7e8c0d6cc | 48 | |
Christopher Haster |
79:43a7e8c0d6cc | 49 | int TCPSocket::send(const void *data, unsigned size) |
Christopher Haster |
79:43a7e8c0d6cc | 50 | { |
Christopher Haster |
82:97d166c4a193 | 51 | mbed::Timer timer; |
Christopher Haster |
82:97d166c4a193 | 52 | timer.start(); |
Christopher Haster |
82:97d166c4a193 | 53 | |
Christopher Haster |
82:97d166c4a193 | 54 | while (true) { |
Christopher Haster |
82:97d166c4a193 | 55 | if (!_socket) { |
Christopher Haster |
82:97d166c4a193 | 56 | return NSAPI_ERROR_NO_SOCKET; |
Christopher Haster |
82:97d166c4a193 | 57 | } |
Christopher Haster |
82:97d166c4a193 | 58 | |
Christopher Haster |
82:97d166c4a193 | 59 | int sent = _iface->socket_send(_socket, data, size); |
Christopher Haster |
82:97d166c4a193 | 60 | if (sent != NSAPI_ERROR_WOULD_BLOCK || !_blocking || |
Christopher Haster |
82:97d166c4a193 | 61 | (_timeout && timer.read_ms() > _timeout)) { |
Christopher Haster |
82:97d166c4a193 | 62 | return sent; |
Christopher Haster |
82:97d166c4a193 | 63 | } |
Christopher Haster |
79:43a7e8c0d6cc | 64 | } |
Christopher Haster |
79:43a7e8c0d6cc | 65 | } |
Christopher Haster |
79:43a7e8c0d6cc | 66 | |
Christopher Haster |
79:43a7e8c0d6cc | 67 | int TCPSocket::recv(void *data, unsigned size) |
Christopher Haster |
79:43a7e8c0d6cc | 68 | { |
Christopher Haster |
82:97d166c4a193 | 69 | mbed::Timer timer; |
Christopher Haster |
82:97d166c4a193 | 70 | timer.start(); |
Christopher Haster |
82:97d166c4a193 | 71 | |
Christopher Haster |
82:97d166c4a193 | 72 | while (true) { |
Christopher Haster |
82:97d166c4a193 | 73 | if (!_socket) { |
Christopher Haster |
82:97d166c4a193 | 74 | return NSAPI_ERROR_NO_SOCKET; |
Christopher Haster |
82:97d166c4a193 | 75 | } |
Christopher Haster |
82:97d166c4a193 | 76 | |
Christopher Haster |
82:97d166c4a193 | 77 | int recv = _iface->socket_recv(_socket, data, size); |
Christopher Haster |
82:97d166c4a193 | 78 | if (recv != NSAPI_ERROR_WOULD_BLOCK || !_blocking || |
Christopher Haster |
82:97d166c4a193 | 79 | (_timeout && timer.read_ms() > _timeout)) { |
Christopher Haster |
82:97d166c4a193 | 80 | return recv; |
Christopher Haster |
82:97d166c4a193 | 81 | } |
Christopher Haster |
79:43a7e8c0d6cc | 82 | } |
Christopher Haster |
79:43a7e8c0d6cc | 83 | } |
Christopher Haster |
81:1600369a29dd | 84 | |
Christopher Haster |
81:1600369a29dd | 85 | |
Christopher Haster |
81:1600369a29dd | 86 | void TCPSocket::attach_send(mbed::FuncPtr<void()> callback) |
Christopher Haster |
81:1600369a29dd | 87 | { |
Christopher Haster |
81:1600369a29dd | 88 | _send_cb = callback; |
Christopher Haster |
81:1600369a29dd | 89 | |
Christopher Haster |
81:1600369a29dd | 90 | if (_socket && _send_cb) { |
Christopher Haster |
81:1600369a29dd | 91 | return _iface->socket_attach_send(_socket, Socket::thunk, &_send_cb); |
Christopher Haster |
81:1600369a29dd | 92 | } else if (_socket) { |
Christopher Haster |
81:1600369a29dd | 93 | return _iface->socket_attach_send(_socket, 0, 0); |
Christopher Haster |
81:1600369a29dd | 94 | } |
Christopher Haster |
81:1600369a29dd | 95 | } |
Christopher Haster |
81:1600369a29dd | 96 | |
Christopher Haster |
81:1600369a29dd | 97 | void TCPSocket::attach_recv(mbed::FuncPtr<void()> callback) |
Christopher Haster |
81:1600369a29dd | 98 | { |
Christopher Haster |
81:1600369a29dd | 99 | _recv_cb = callback; |
Christopher Haster |
81:1600369a29dd | 100 | |
Christopher Haster |
81:1600369a29dd | 101 | if (_socket && _recv_cb) { |
Christopher Haster |
81:1600369a29dd | 102 | return _iface->socket_attach_recv(_socket, Socket::thunk, &_recv_cb); |
Christopher Haster |
81:1600369a29dd | 103 | } else if (_socket) { |
Christopher Haster |
81:1600369a29dd | 104 | return _iface->socket_attach_recv(_socket, 0, 0); |
Christopher Haster |
81:1600369a29dd | 105 | } |
Christopher Haster |
81:1600369a29dd | 106 | } |
Christopher Haster |
81:1600369a29dd | 107 | |
Christopher Haster |
81:1600369a29dd | 108 | TCPSocket::~TCPSocket() |
Christopher Haster |
81:1600369a29dd | 109 | { |
Christopher Haster |
81:1600369a29dd | 110 | if (_socket && _send_cb) { |
Christopher Haster |
81:1600369a29dd | 111 | _iface->socket_attach_send(_socket, 0, 0); |
Christopher Haster |
81:1600369a29dd | 112 | } |
Christopher Haster |
81:1600369a29dd | 113 | |
Christopher Haster |
81:1600369a29dd | 114 | if (_socket && _recv_cb) { |
Christopher Haster |
81:1600369a29dd | 115 | _iface->socket_attach_recv(_socket, 0, 0); |
Christopher Haster |
81:1600369a29dd | 116 | } |
Christopher Haster |
81:1600369a29dd | 117 | } |