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
select.cpp@5:4b6bc10437cb, 2012-07-18 (annotated)
- Committer:
- NegativeBlack
- Date:
- Wed Jul 18 14:35:02 2012 +0000
- Revision:
- 5:4b6bc10437cb
- Parent:
- 3:d30db8752485
- Child:
- 8:cdee0f2b6ff0
Implemented Select API.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
NegativeBlack | 5:4b6bc10437cb | 1 | /** |
NegativeBlack | 5:4b6bc10437cb | 2 | * Copyright (c) 2012, Roy van Dam <roy@vandam-innovations.com> |
NegativeBlack | 5:4b6bc10437cb | 3 | * All rights reserved. |
NegativeBlack | 5:4b6bc10437cb | 4 | * |
NegativeBlack | 5:4b6bc10437cb | 5 | * Redistribution and use in source and binary forms, with or without |
NegativeBlack | 5:4b6bc10437cb | 6 | * modification, are permitted provided that the following conditions are met: |
NegativeBlack | 5:4b6bc10437cb | 7 | * |
NegativeBlack | 5:4b6bc10437cb | 8 | * 1. Redistributions of source code must retain the above copyright notice, this |
NegativeBlack | 5:4b6bc10437cb | 9 | * list of conditions and the following disclaimer. |
NegativeBlack | 5:4b6bc10437cb | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
NegativeBlack | 5:4b6bc10437cb | 11 | * this list of conditions and the following disclaimer in the documentation |
NegativeBlack | 5:4b6bc10437cb | 12 | * and/or other materials provided with the distribution. |
NegativeBlack | 5:4b6bc10437cb | 13 | * |
NegativeBlack | 5:4b6bc10437cb | 14 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
NegativeBlack | 5:4b6bc10437cb | 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
NegativeBlack | 5:4b6bc10437cb | 16 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
NegativeBlack | 5:4b6bc10437cb | 17 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
NegativeBlack | 5:4b6bc10437cb | 18 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
NegativeBlack | 5:4b6bc10437cb | 19 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
NegativeBlack | 5:4b6bc10437cb | 20 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
NegativeBlack | 5:4b6bc10437cb | 21 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
NegativeBlack | 5:4b6bc10437cb | 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
NegativeBlack | 5:4b6bc10437cb | 23 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
NegativeBlack | 5:4b6bc10437cb | 24 | */ |
NegativeBlack | 5:4b6bc10437cb | 25 | |
NegativeBlack | 5:4b6bc10437cb | 26 | #include "select.hpp" |
NegativeBlack | 5:4b6bc10437cb | 27 | using namespace network; |
NegativeBlack | 5:4b6bc10437cb | 28 | |
NegativeBlack | 5:4b6bc10437cb | 29 | Select::~Select() |
NegativeBlack | 5:4b6bc10437cb | 30 | { |
NegativeBlack | 5:4b6bc10437cb | 31 | // Clear fd sets |
NegativeBlack | 5:4b6bc10437cb | 32 | FD_ZERO(&this->_read_set); |
NegativeBlack | 5:4b6bc10437cb | 33 | FD_ZERO(&this->_write_set); |
NegativeBlack | 5:4b6bc10437cb | 34 | } |
NegativeBlack | 5:4b6bc10437cb | 35 | |
NegativeBlack | 5:4b6bc10437cb | 36 | int |
NegativeBlack | 5:4b6bc10437cb | 37 | Select::wait(int timeout) |
NegativeBlack | 5:4b6bc10437cb | 38 | { |
NegativeBlack | 5:4b6bc10437cb | 39 | int max_fd = 0; |
NegativeBlack | 5:4b6bc10437cb | 40 | Select::SocketList::iterator entry; |
NegativeBlack | 5:4b6bc10437cb | 41 | |
NegativeBlack | 5:4b6bc10437cb | 42 | // Clear fd sets |
NegativeBlack | 5:4b6bc10437cb | 43 | FD_ZERO(&this->_read_set); |
NegativeBlack | 5:4b6bc10437cb | 44 | FD_ZERO(&this->_write_set); |
NegativeBlack | 5:4b6bc10437cb | 45 | |
NegativeBlack | 5:4b6bc10437cb | 46 | // Create set for writing |
NegativeBlack | 5:4b6bc10437cb | 47 | entry = this->_write_list.begin(); |
NegativeBlack | 5:4b6bc10437cb | 48 | for (; entry != this->_write_list.end(); entry++) { |
NegativeBlack | 5:4b6bc10437cb | 49 | int socket = (*entry)->getHandle(); |
NegativeBlack | 5:4b6bc10437cb | 50 | if (socket == -1) { |
NegativeBlack | 5:4b6bc10437cb | 51 | continue; |
NegativeBlack | 5:4b6bc10437cb | 52 | } |
NegativeBlack | 5:4b6bc10437cb | 53 | |
NegativeBlack | 5:4b6bc10437cb | 54 | FD_SET(socket, &this->_write_set); |
NegativeBlack | 5:4b6bc10437cb | 55 | max_fd = (max_fd > socket) |
NegativeBlack | 5:4b6bc10437cb | 56 | ? max_fd |
NegativeBlack | 5:4b6bc10437cb | 57 | : socket; |
NegativeBlack | 5:4b6bc10437cb | 58 | } |
NegativeBlack | 5:4b6bc10437cb | 59 | |
NegativeBlack | 5:4b6bc10437cb | 60 | // Create set for reading |
NegativeBlack | 5:4b6bc10437cb | 61 | entry = this->_read_list.begin(); |
NegativeBlack | 5:4b6bc10437cb | 62 | for (; entry != this->_read_list.end(); entry++) { |
NegativeBlack | 5:4b6bc10437cb | 63 | int socket = (*entry)->getHandle(); |
NegativeBlack | 5:4b6bc10437cb | 64 | if (socket == -1) { |
NegativeBlack | 5:4b6bc10437cb | 65 | continue; |
NegativeBlack | 5:4b6bc10437cb | 66 | } |
NegativeBlack | 5:4b6bc10437cb | 67 | |
NegativeBlack | 5:4b6bc10437cb | 68 | FD_SET(socket, &this->_read_set); |
NegativeBlack | 5:4b6bc10437cb | 69 | max_fd = (max_fd > socket) |
NegativeBlack | 5:4b6bc10437cb | 70 | ? max_fd |
NegativeBlack | 5:4b6bc10437cb | 71 | : socket; |
NegativeBlack | 5:4b6bc10437cb | 72 | } |
NegativeBlack | 5:4b6bc10437cb | 73 | |
NegativeBlack | 5:4b6bc10437cb | 74 | // Reset iterators |
NegativeBlack | 5:4b6bc10437cb | 75 | this->_write_list_iterator = this->_write_list.begin(); |
NegativeBlack | 5:4b6bc10437cb | 76 | this->_read_list_iterator = this->_read_list.begin(); |
NegativeBlack | 5:4b6bc10437cb | 77 | |
NegativeBlack | 5:4b6bc10437cb | 78 | // Select on the created sets, wait until timeout. |
NegativeBlack | 5:4b6bc10437cb | 79 | if (timeout > 0) { |
NegativeBlack | 5:4b6bc10437cb | 80 | struct timeval _timeout; |
NegativeBlack | 5:4b6bc10437cb | 81 | _timeout.tv_sec = timeout / 1000; |
NegativeBlack | 5:4b6bc10437cb | 82 | _timeout.tv_usec = (timeout - (_timeout.tv_sec * 1000)) * 1000; |
NegativeBlack | 5:4b6bc10437cb | 83 | |
NegativeBlack | 5:4b6bc10437cb | 84 | return ::select(max_fd + 1, &this->_read_set, &this->_write_set, NULL, &_timeout); |
NegativeBlack | 5:4b6bc10437cb | 85 | } else { |
NegativeBlack | 5:4b6bc10437cb | 86 | // Select on the created sets, wait forever. |
NegativeBlack | 5:4b6bc10437cb | 87 | return ::select(max_fd + 1, &this->_read_set, &this->_write_set, NULL, NULL); |
NegativeBlack | 5:4b6bc10437cb | 88 | } |
NegativeBlack | 5:4b6bc10437cb | 89 | } |
NegativeBlack | 5:4b6bc10437cb | 90 | |
NegativeBlack | 5:4b6bc10437cb | 91 | void |
NegativeBlack | 5:4b6bc10437cb | 92 | Select::clear() |
NegativeBlack | 5:4b6bc10437cb | 93 | { |
NegativeBlack | 5:4b6bc10437cb | 94 | this->_read_list.clear(); |
NegativeBlack | 5:4b6bc10437cb | 95 | this->_write_list.clear(); |
NegativeBlack | 5:4b6bc10437cb | 96 | } |
NegativeBlack | 5:4b6bc10437cb | 97 | |
NegativeBlack | 5:4b6bc10437cb | 98 | void |
NegativeBlack | 5:4b6bc10437cb | 99 | Select::set(Socket *socket, enum Mode mode) |
NegativeBlack | 5:4b6bc10437cb | 100 | { |
NegativeBlack | 5:4b6bc10437cb | 101 | switch (mode) { |
NegativeBlack | 5:4b6bc10437cb | 102 | case Select::Read: |
NegativeBlack | 5:4b6bc10437cb | 103 | if (this->_inReadList(socket) != this->_read_list.end()) { |
NegativeBlack | 5:4b6bc10437cb | 104 | break; |
NegativeBlack | 5:4b6bc10437cb | 105 | } |
NegativeBlack | 5:4b6bc10437cb | 106 | |
NegativeBlack | 5:4b6bc10437cb | 107 | this->_read_list.push_back(socket); |
NegativeBlack | 5:4b6bc10437cb | 108 | break; |
NegativeBlack | 5:4b6bc10437cb | 109 | |
NegativeBlack | 5:4b6bc10437cb | 110 | case Select::Write: |
NegativeBlack | 5:4b6bc10437cb | 111 | if (this->_inWriteList(socket) != this->_write_list.end()) { |
NegativeBlack | 5:4b6bc10437cb | 112 | break; |
NegativeBlack | 5:4b6bc10437cb | 113 | } |
NegativeBlack | 5:4b6bc10437cb | 114 | |
NegativeBlack | 5:4b6bc10437cb | 115 | this->_write_list.push_back(socket); |
NegativeBlack | 5:4b6bc10437cb | 116 | break; |
NegativeBlack | 5:4b6bc10437cb | 117 | |
NegativeBlack | 5:4b6bc10437cb | 118 | case Select::ReadWrite: |
NegativeBlack | 5:4b6bc10437cb | 119 | this->set(socket, Select::Read); |
NegativeBlack | 5:4b6bc10437cb | 120 | this->set(socket, Select::Write); |
NegativeBlack | 5:4b6bc10437cb | 121 | break; |
NegativeBlack | 5:4b6bc10437cb | 122 | } |
NegativeBlack | 5:4b6bc10437cb | 123 | } |
NegativeBlack | 5:4b6bc10437cb | 124 | |
NegativeBlack | 5:4b6bc10437cb | 125 | void |
NegativeBlack | 5:4b6bc10437cb | 126 | Select::unset(Socket *socket, enum Mode mode) |
NegativeBlack | 5:4b6bc10437cb | 127 | { |
NegativeBlack | 5:4b6bc10437cb | 128 | Select::SocketList::iterator entry; |
NegativeBlack | 5:4b6bc10437cb | 129 | |
NegativeBlack | 5:4b6bc10437cb | 130 | switch (mode) { |
NegativeBlack | 5:4b6bc10437cb | 131 | case Select::Read: |
NegativeBlack | 5:4b6bc10437cb | 132 | entry = this->_inReadList(socket); |
NegativeBlack | 5:4b6bc10437cb | 133 | if (entry == this->_read_list.end()) { |
NegativeBlack | 5:4b6bc10437cb | 134 | break; |
NegativeBlack | 5:4b6bc10437cb | 135 | } |
NegativeBlack | 5:4b6bc10437cb | 136 | |
NegativeBlack | 5:4b6bc10437cb | 137 | this->_read_list.erase(entry); |
NegativeBlack | 5:4b6bc10437cb | 138 | break; |
NegativeBlack | 5:4b6bc10437cb | 139 | |
NegativeBlack | 5:4b6bc10437cb | 140 | case Select::Write: |
NegativeBlack | 5:4b6bc10437cb | 141 | entry = this->_inWriteList(socket); |
NegativeBlack | 5:4b6bc10437cb | 142 | if (entry == this->_write_list.end()) { |
NegativeBlack | 5:4b6bc10437cb | 143 | break; |
NegativeBlack | 5:4b6bc10437cb | 144 | } |
NegativeBlack | 5:4b6bc10437cb | 145 | |
NegativeBlack | 5:4b6bc10437cb | 146 | this->_write_list.erase(entry); |
NegativeBlack | 5:4b6bc10437cb | 147 | break; |
NegativeBlack | 5:4b6bc10437cb | 148 | |
NegativeBlack | 5:4b6bc10437cb | 149 | case Select::ReadWrite: |
NegativeBlack | 5:4b6bc10437cb | 150 | this->unset(socket, Select::Read); |
NegativeBlack | 5:4b6bc10437cb | 151 | this->unset(socket, Select::Write); |
NegativeBlack | 5:4b6bc10437cb | 152 | break; |
NegativeBlack | 5:4b6bc10437cb | 153 | } |
NegativeBlack | 5:4b6bc10437cb | 154 | } |
NegativeBlack | 5:4b6bc10437cb | 155 | |
NegativeBlack | 5:4b6bc10437cb | 156 | Socket * |
NegativeBlack | 5:4b6bc10437cb | 157 | Select::getWritable() |
NegativeBlack | 5:4b6bc10437cb | 158 | { |
NegativeBlack | 5:4b6bc10437cb | 159 | if (this->_write_list_iterator == this->_write_list.end()) { |
NegativeBlack | 5:4b6bc10437cb | 160 | return NULL; |
NegativeBlack | 5:4b6bc10437cb | 161 | } |
NegativeBlack | 5:4b6bc10437cb | 162 | |
NegativeBlack | 5:4b6bc10437cb | 163 | for (; this->_write_list_iterator != this->_write_list.end(); this->_write_list_iterator++) { |
NegativeBlack | 5:4b6bc10437cb | 164 | int socket = (*this->_write_list_iterator)->getHandle(); |
NegativeBlack | 5:4b6bc10437cb | 165 | if (socket == -1) { |
NegativeBlack | 5:4b6bc10437cb | 166 | continue; |
NegativeBlack | 5:4b6bc10437cb | 167 | } |
NegativeBlack | 5:4b6bc10437cb | 168 | |
NegativeBlack | 5:4b6bc10437cb | 169 | if (FD_ISSET(socket, &this->_write_set)) { |
NegativeBlack | 5:4b6bc10437cb | 170 | Select::SocketList::iterator result = this->_write_list_iterator; |
NegativeBlack | 5:4b6bc10437cb | 171 | this->_write_list_iterator++; |
NegativeBlack | 5:4b6bc10437cb | 172 | return (*result); |
NegativeBlack | 5:4b6bc10437cb | 173 | } |
NegativeBlack | 5:4b6bc10437cb | 174 | } |
NegativeBlack | 5:4b6bc10437cb | 175 | |
NegativeBlack | 5:4b6bc10437cb | 176 | return NULL; |
NegativeBlack | 5:4b6bc10437cb | 177 | } |
NegativeBlack | 5:4b6bc10437cb | 178 | |
NegativeBlack | 5:4b6bc10437cb | 179 | Socket * |
NegativeBlack | 5:4b6bc10437cb | 180 | Select::getReadable() |
NegativeBlack | 5:4b6bc10437cb | 181 | { |
NegativeBlack | 5:4b6bc10437cb | 182 | if (this->_read_list_iterator == this->_read_list.end()) { |
NegativeBlack | 5:4b6bc10437cb | 183 | return NULL; |
NegativeBlack | 5:4b6bc10437cb | 184 | } |
NegativeBlack | 5:4b6bc10437cb | 185 | |
NegativeBlack | 5:4b6bc10437cb | 186 | for (; this->_read_list_iterator != this->_read_list.end(); this->_read_list_iterator++) { |
NegativeBlack | 5:4b6bc10437cb | 187 | int socket = (*this->_read_list_iterator)->getHandle(); |
NegativeBlack | 5:4b6bc10437cb | 188 | if (socket == -1) { |
NegativeBlack | 5:4b6bc10437cb | 189 | continue; |
NegativeBlack | 5:4b6bc10437cb | 190 | } |
NegativeBlack | 5:4b6bc10437cb | 191 | |
NegativeBlack | 5:4b6bc10437cb | 192 | if (FD_ISSET(socket, &this->_read_set)) { |
NegativeBlack | 5:4b6bc10437cb | 193 | Select::SocketList::iterator result = this->_read_list_iterator; |
NegativeBlack | 5:4b6bc10437cb | 194 | this->_read_list_iterator++; |
NegativeBlack | 5:4b6bc10437cb | 195 | return (*result); |
NegativeBlack | 5:4b6bc10437cb | 196 | } |
NegativeBlack | 5:4b6bc10437cb | 197 | } |
NegativeBlack | 5:4b6bc10437cb | 198 | |
NegativeBlack | 5:4b6bc10437cb | 199 | return NULL; |
NegativeBlack | 5:4b6bc10437cb | 200 | } |
NegativeBlack | 5:4b6bc10437cb | 201 | |
NegativeBlack | 5:4b6bc10437cb | 202 | Select::SocketList::iterator |
NegativeBlack | 5:4b6bc10437cb | 203 | Select::_inWriteList(Socket *socket) |
NegativeBlack | 5:4b6bc10437cb | 204 | { |
NegativeBlack | 5:4b6bc10437cb | 205 | Select::SocketList::iterator entry = this->_write_list.begin(); |
NegativeBlack | 5:4b6bc10437cb | 206 | for (; entry != this->_write_list.end(); entry++) { |
NegativeBlack | 5:4b6bc10437cb | 207 | if ((*entry) == socket) { |
NegativeBlack | 5:4b6bc10437cb | 208 | return entry; |
NegativeBlack | 5:4b6bc10437cb | 209 | } |
NegativeBlack | 5:4b6bc10437cb | 210 | } |
NegativeBlack | 5:4b6bc10437cb | 211 | |
NegativeBlack | 5:4b6bc10437cb | 212 | return this->_write_list.end(); |
NegativeBlack | 5:4b6bc10437cb | 213 | } |
NegativeBlack | 5:4b6bc10437cb | 214 | |
NegativeBlack | 5:4b6bc10437cb | 215 | Select::SocketList::iterator |
NegativeBlack | 5:4b6bc10437cb | 216 | Select::_inReadList(Socket *socket) |
NegativeBlack | 5:4b6bc10437cb | 217 | { |
NegativeBlack | 5:4b6bc10437cb | 218 | Select::SocketList::iterator entry = this->_read_list.begin(); |
NegativeBlack | 5:4b6bc10437cb | 219 | for (; entry != this->_read_list.end(); entry++) { |
NegativeBlack | 5:4b6bc10437cb | 220 | if ((*entry) == socket) { |
NegativeBlack | 5:4b6bc10437cb | 221 | return entry; |
NegativeBlack | 5:4b6bc10437cb | 222 | } |
NegativeBlack | 5:4b6bc10437cb | 223 | } |
NegativeBlack | 5:4b6bc10437cb | 224 | |
NegativeBlack | 5:4b6bc10437cb | 225 | return this->_read_list.end(); |
NegativeBlack | 5:4b6bc10437cb | 226 | } |