A new object oriented network api that can be used to replace the one provided by the EthernetInterface library.
Dependents: NetRelais TCP_Client_Example TCP_Server_Example UDP_Server_Example ... more
Object oriented network interface for the mbed platform
Currently implemented:
- Address
- Endpoint
- UDP Socket
- TCP Socket
- Databuffer
- Select API
It depends on the EthernetInterface for the lwip network stack.
Please do not hesitate to contact me with any remarks, improvements or questions.
The API is also available for unix at GitHub: LibNosa
Examples
udp/socket.cpp@6:847a0b218e22, 2012-07-18 (annotated)
- Committer:
- NegativeBlack
- Date:
- Wed Jul 18 15:31:16 2012 +0000
- Revision:
- 6:847a0b218e22
- Parent:
- 3:d30db8752485
- Child:
- 8:cdee0f2b6ff0
Added support for using Buffer objects with the UDP socket send and receive methods.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
NegativeBlack | 0:00d5bc4b46e1 | 1 | /** |
NegativeBlack | 0:00d5bc4b46e1 | 2 | * Copyright (c) 2012, Roy van Dam <roy@vandam-innovations.com> |
NegativeBlack | 0:00d5bc4b46e1 | 3 | * All rights reserved. |
NegativeBlack | 0:00d5bc4b46e1 | 4 | * |
NegativeBlack | 0:00d5bc4b46e1 | 5 | * Redistribution and use in source and binary forms, with or without |
NegativeBlack | 0:00d5bc4b46e1 | 6 | * modification, are permitted provided that the following conditions are met: |
NegativeBlack | 0:00d5bc4b46e1 | 7 | * |
NegativeBlack | 0:00d5bc4b46e1 | 8 | * 1. Redistributions of source code must retain the above copyright notice, this |
NegativeBlack | 0:00d5bc4b46e1 | 9 | * list of conditions and the following disclaimer. |
NegativeBlack | 0:00d5bc4b46e1 | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
NegativeBlack | 0:00d5bc4b46e1 | 11 | * this list of conditions and the following disclaimer in the documentation |
NegativeBlack | 0:00d5bc4b46e1 | 12 | * and/or other materials provided with the distribution. |
NegativeBlack | 0:00d5bc4b46e1 | 13 | * |
NegativeBlack | 0:00d5bc4b46e1 | 14 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
NegativeBlack | 0:00d5bc4b46e1 | 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
NegativeBlack | 0:00d5bc4b46e1 | 16 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
NegativeBlack | 0:00d5bc4b46e1 | 17 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
NegativeBlack | 0:00d5bc4b46e1 | 18 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
NegativeBlack | 0:00d5bc4b46e1 | 19 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
NegativeBlack | 0:00d5bc4b46e1 | 20 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
NegativeBlack | 0:00d5bc4b46e1 | 21 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
NegativeBlack | 0:00d5bc4b46e1 | 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
NegativeBlack | 0:00d5bc4b46e1 | 23 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
NegativeBlack | 0:00d5bc4b46e1 | 24 | */ |
NegativeBlack | 0:00d5bc4b46e1 | 25 | |
NegativeBlack | 1:6956f6f96fef | 26 | #include "socket.hpp" |
NegativeBlack | 0:00d5bc4b46e1 | 27 | using namespace network::udp; |
NegativeBlack | 0:00d5bc4b46e1 | 28 | |
NegativeBlack | 0:00d5bc4b46e1 | 29 | int |
NegativeBlack | 0:00d5bc4b46e1 | 30 | Socket::open() |
NegativeBlack | 0:00d5bc4b46e1 | 31 | { |
NegativeBlack | 2:e283a0062097 | 32 | // Check socket status |
NegativeBlack | 2:e283a0062097 | 33 | if (this->_status != Socket::Closed) { |
NegativeBlack | 2:e283a0062097 | 34 | return -1; |
NegativeBlack | 2:e283a0062097 | 35 | } |
NegativeBlack | 2:e283a0062097 | 36 | |
NegativeBlack | 2:e283a0062097 | 37 | // Open socket |
NegativeBlack | 2:e283a0062097 | 38 | this->_socket = ::socket(AF_INET, SOCK_DGRAM, 0); |
NegativeBlack | 2:e283a0062097 | 39 | if (this->_socket < 0) { |
NegativeBlack | 2:e283a0062097 | 40 | return -1; |
NegativeBlack | 2:e283a0062097 | 41 | } |
NegativeBlack | 2:e283a0062097 | 42 | |
NegativeBlack | 2:e283a0062097 | 43 | // Update status and return |
NegativeBlack | 2:e283a0062097 | 44 | this->_status = Socket::Open; |
NegativeBlack | 0:00d5bc4b46e1 | 45 | return 0; |
NegativeBlack | 0:00d5bc4b46e1 | 46 | } |
NegativeBlack | 0:00d5bc4b46e1 | 47 | |
NegativeBlack | 0:00d5bc4b46e1 | 48 | int |
NegativeBlack | 6:847a0b218e22 | 49 | Socket::send(Buffer &buffer, ip::Address &address, int port) |
NegativeBlack | 6:847a0b218e22 | 50 | { |
NegativeBlack | 6:847a0b218e22 | 51 | ip::Endpoint endpoint(address, port); |
NegativeBlack | 6:847a0b218e22 | 52 | return this->send(buffer.pointer(), buffer.length(), endpoint); |
NegativeBlack | 6:847a0b218e22 | 53 | } |
NegativeBlack | 6:847a0b218e22 | 54 | |
NegativeBlack | 6:847a0b218e22 | 55 | int |
NegativeBlack | 6:847a0b218e22 | 56 | Socket::send(Buffer &buffer, ip::Endpoint &endpoint) |
NegativeBlack | 6:847a0b218e22 | 57 | { |
NegativeBlack | 6:847a0b218e22 | 58 | return this->send(buffer.pointer(), buffer.length(), endpoint); |
NegativeBlack | 6:847a0b218e22 | 59 | } |
NegativeBlack | 6:847a0b218e22 | 60 | |
NegativeBlack | 6:847a0b218e22 | 61 | int |
NegativeBlack | 0:00d5bc4b46e1 | 62 | Socket::send(void *data, size_t size, ip::Address &address, int port) |
NegativeBlack | 0:00d5bc4b46e1 | 63 | { |
NegativeBlack | 2:e283a0062097 | 64 | ip::Endpoint endpoint(address, port); |
NegativeBlack | 2:e283a0062097 | 65 | return this->send(data, size, endpoint); |
NegativeBlack | 2:e283a0062097 | 66 | } |
NegativeBlack | 2:e283a0062097 | 67 | |
NegativeBlack | 2:e283a0062097 | 68 | int |
NegativeBlack | 2:e283a0062097 | 69 | Socket::send(void *data, size_t size, ip::Endpoint &endpoint) |
NegativeBlack | 2:e283a0062097 | 70 | { |
NegativeBlack | 2:e283a0062097 | 71 | // Check data buffer and size |
NegativeBlack | 2:e283a0062097 | 72 | if (data == NULL || size == 0) { |
NegativeBlack | 2:e283a0062097 | 73 | return -1; |
NegativeBlack | 2:e283a0062097 | 74 | } |
NegativeBlack | 2:e283a0062097 | 75 | |
NegativeBlack | 2:e283a0062097 | 76 | // Check socket status |
NegativeBlack | 2:e283a0062097 | 77 | if (this->_status != Socket::Open) { |
NegativeBlack | 2:e283a0062097 | 78 | return -1; |
NegativeBlack | 2:e283a0062097 | 79 | } |
NegativeBlack | 2:e283a0062097 | 80 | |
NegativeBlack | 2:e283a0062097 | 81 | // Create native endpoint |
NegativeBlack | 2:e283a0062097 | 82 | struct sockaddr_in native_endpoint; |
NegativeBlack | 2:e283a0062097 | 83 | endpoint.toNative(&native_endpoint); |
NegativeBlack | 2:e283a0062097 | 84 | |
NegativeBlack | 2:e283a0062097 | 85 | // Update status |
NegativeBlack | 2:e283a0062097 | 86 | this->_status = Socket::Sending; |
NegativeBlack | 2:e283a0062097 | 87 | |
NegativeBlack | 2:e283a0062097 | 88 | // Try to write the specified amount of bytes. |
NegativeBlack | 2:e283a0062097 | 89 | int bytes_written = ::sendto(this->_socket, data, size, 0, |
NegativeBlack | 2:e283a0062097 | 90 | (const struct sockaddr *)&native_endpoint, sizeof(native_endpoint)); |
NegativeBlack | 2:e283a0062097 | 91 | |
NegativeBlack | 2:e283a0062097 | 92 | // Update status |
NegativeBlack | 2:e283a0062097 | 93 | this->_status = Socket::Open; |
NegativeBlack | 2:e283a0062097 | 94 | |
NegativeBlack | 2:e283a0062097 | 95 | // Return the result. |
NegativeBlack | 2:e283a0062097 | 96 | return bytes_written; |
NegativeBlack | 0:00d5bc4b46e1 | 97 | } |
NegativeBlack | 0:00d5bc4b46e1 | 98 | |
NegativeBlack | 0:00d5bc4b46e1 | 99 | int |
NegativeBlack | 6:847a0b218e22 | 100 | Socket::receive(Buffer &buffer) |
NegativeBlack | 6:847a0b218e22 | 101 | { |
NegativeBlack | 6:847a0b218e22 | 102 | int result = this->receive(buffer.pointer(), buffer.size()); |
NegativeBlack | 6:847a0b218e22 | 103 | if (result >= 0) { |
NegativeBlack | 6:847a0b218e22 | 104 | buffer.setLength(result); |
NegativeBlack | 6:847a0b218e22 | 105 | } |
NegativeBlack | 6:847a0b218e22 | 106 | |
NegativeBlack | 6:847a0b218e22 | 107 | return result; |
NegativeBlack | 6:847a0b218e22 | 108 | } |
NegativeBlack | 6:847a0b218e22 | 109 | |
NegativeBlack | 6:847a0b218e22 | 110 | int |
NegativeBlack | 3:d30db8752485 | 111 | Socket::receive(void *data, size_t max_size) |
NegativeBlack | 3:d30db8752485 | 112 | { |
NegativeBlack | 3:d30db8752485 | 113 | return this->receive(data, max_size, this->_remote_endpoint); |
NegativeBlack | 3:d30db8752485 | 114 | } |
NegativeBlack | 3:d30db8752485 | 115 | |
NegativeBlack | 3:d30db8752485 | 116 | int |
NegativeBlack | 3:d30db8752485 | 117 | Socket::receive(void *data, size_t max_size, ip::Endpoint &endpoint) |
NegativeBlack | 0:00d5bc4b46e1 | 118 | { |
NegativeBlack | 2:e283a0062097 | 119 | // Check data buffer and size |
NegativeBlack | 2:e283a0062097 | 120 | if (data == NULL || max_size == 0) { |
NegativeBlack | 2:e283a0062097 | 121 | return -1; |
NegativeBlack | 2:e283a0062097 | 122 | } |
NegativeBlack | 2:e283a0062097 | 123 | |
NegativeBlack | 2:e283a0062097 | 124 | // Check socket status |
NegativeBlack | 2:e283a0062097 | 125 | if (this->_status != Socket::Open) { |
NegativeBlack | 2:e283a0062097 | 126 | return -1; |
NegativeBlack | 2:e283a0062097 | 127 | } |
NegativeBlack | 0:00d5bc4b46e1 | 128 | |
NegativeBlack | 2:e283a0062097 | 129 | // Create native endpoint |
NegativeBlack | 2:e283a0062097 | 130 | struct sockaddr_in native_endpoint; |
NegativeBlack | 3:d30db8752485 | 131 | int native_endpoint_size = sizeof(native_endpoint); |
NegativeBlack | 2:e283a0062097 | 132 | std::memset(&native_endpoint, 0, sizeof(native_endpoint)); |
NegativeBlack | 2:e283a0062097 | 133 | |
NegativeBlack | 2:e283a0062097 | 134 | // Update status |
NegativeBlack | 2:e283a0062097 | 135 | this->_status = Socket::Receiving; |
NegativeBlack | 2:e283a0062097 | 136 | |
NegativeBlack | 2:e283a0062097 | 137 | // Try to read a packet from the socket. |
NegativeBlack | 2:e283a0062097 | 138 | int bytes_read = ::recvfrom(this->_socket, data, max_size, 0, |
NegativeBlack | 2:e283a0062097 | 139 | (struct sockaddr*)&native_endpoint, (u32_t *)&native_endpoint_size); |
NegativeBlack | 2:e283a0062097 | 140 | |
NegativeBlack | 2:e283a0062097 | 141 | // Update status and return |
NegativeBlack | 2:e283a0062097 | 142 | this->_status = Socket::Open; |
NegativeBlack | 2:e283a0062097 | 143 | |
NegativeBlack | 2:e283a0062097 | 144 | // Did we succeed? |
NegativeBlack | 2:e283a0062097 | 145 | if (bytes_read < 0) { |
NegativeBlack | 2:e283a0062097 | 146 | return -1; |
NegativeBlack | 2:e283a0062097 | 147 | } |
NegativeBlack | 2:e283a0062097 | 148 | |
NegativeBlack | 3:d30db8752485 | 149 | // Check if we received the endpoint information correctly |
NegativeBlack | 3:d30db8752485 | 150 | if (native_endpoint_size != sizeof(native_endpoint)) { |
NegativeBlack | 3:d30db8752485 | 151 | printf("Warning: invalid endpoint size received\n\r"); |
NegativeBlack | 3:d30db8752485 | 152 | return bytes_read; |
NegativeBlack | 2:e283a0062097 | 153 | } |
NegativeBlack | 2:e283a0062097 | 154 | |
NegativeBlack | 3:d30db8752485 | 155 | // Copy remote endpoint information |
NegativeBlack | 3:d30db8752485 | 156 | endpoint.fromNative(&native_endpoint); |
NegativeBlack | 3:d30db8752485 | 157 | |
NegativeBlack | 2:e283a0062097 | 158 | // Return bytes read |
NegativeBlack | 2:e283a0062097 | 159 | return bytes_read; |
NegativeBlack | 0:00d5bc4b46e1 | 160 | } |