Damien Frost / WiflyInterfaceMessaging

- Added messages

Fork of WiflyInterface by Damien Frost

Socket/UDPSocket.cpp@43:b14d4ba33255, 2017-05-24 (annotated)

Committer:
defrost
Date:
Wed May 24 18:34:11 2017 +0000
Revision:
43:b14d4ba33255
Parent:
23:cb8522185c56 
- Not sure what changed here, probably something minor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:fb4494783863 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 1:fb4494783863 2 *
samux 1:fb4494783863 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:fb4494783863 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 1:fb4494783863 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 1:fb4494783863 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 1:fb4494783863 7 * furnished to do so, subject to the following conditions:
samux 1:fb4494783863 8 *
samux 1:fb4494783863 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:fb4494783863 10 * substantial portions of the Software.
samux 1:fb4494783863 11 *
samux 1:fb4494783863 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:fb4494783863 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:fb4494783863 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:fb4494783863 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:fb4494783863 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:fb4494783863 17 */
samux 1:fb4494783863 18
samux 1:fb4494783863 19 #include "UDPSocket.h"
samux 1:fb4494783863 20
samux 1:fb4494783863 21 #include <string>
samux 1:fb4494783863 22 #include <algorithm>
samux 1:fb4494783863 23
samux 1:fb4494783863 24 UDPSocket::UDPSocket()
samux 1:fb4494783863 25 {
samux 1:fb4494783863 26 endpoint_configured = false;
samux 1:fb4494783863 27 endpoint_read = false;
samux 1:fb4494783863 28 }
samux 1:fb4494783863 29
samux 1:fb4494783863 30 int UDPSocket::init(void)
samux 1:fb4494783863 31 {
samux 1:fb4494783863 32 wifi->setProtocol(UDP);
samux 1:fb4494783863 33 wifi->exit();
samux 1:fb4494783863 34 return 0;
samux 1:fb4494783863 35 }
samux 1:fb4494783863 36
defrost 23:cb8522185c56 37
defrost 15:eaa1ec0e26bf 38 void UDPSocket::setBaud(int baudrate)
defrost 15:eaa1ec0e26bf 39 {
defrost 15:eaa1ec0e26bf 40 wifi->setBaud(baudrate);
defrost 15:eaa1ec0e26bf 41 wifi->exit();
defrost 15:eaa1ec0e26bf 42 return;
defrost 15:eaa1ec0e26bf 43 }
defrost 15:eaa1ec0e26bf 44
samux 1:fb4494783863 45 // Server initialization
samux 1:fb4494783863 46 int UDPSocket::bind(int port)
samux 1:fb4494783863 47 {
samux 1:fb4494783863 48 char cmd[17];
samux 1:fb4494783863 49
samux 1:fb4494783863 50 // set local port
samux 1:fb4494783863 51 sprintf(cmd, "set i l %d\r", port);
samux 1:fb4494783863 52 if (!wifi->sendCommand(cmd, "AOK"))
samux 1:fb4494783863 53 return -1;
samux 4:0bcec6272784 54
samux 4:0bcec6272784 55 // save
samux 4:0bcec6272784 56 if (!wifi->sendCommand("save\r", "Stor"))
samux 4:0bcec6272784 57 return -1;
samux 4:0bcec6272784 58
samux 4:0bcec6272784 59 // reboot
samux 4:0bcec6272784 60 wifi->reboot();
samux 4:0bcec6272784 61
samux 4:0bcec6272784 62 // set udp protocol
samux 4:0bcec6272784 63 wifi->setProtocol(UDP);
samux 4:0bcec6272784 64
samux 4:0bcec6272784 65 // connect the network
samux 4:0bcec6272784 66 if (wifi->isDHCP()) {
samux 4:0bcec6272784 67 if (!wifi->sendCommand("join\r", "DHCP=ON", NULL, 10000))
samux 4:0bcec6272784 68 return -1;
samux 4:0bcec6272784 69 } else {
samux 4:0bcec6272784 70 if (!wifi->sendCommand("join\r", "Associated", NULL, 10000))
samux 4:0bcec6272784 71 return -1;
samux 4:0bcec6272784 72 }
samux 4:0bcec6272784 73
samux 4:0bcec6272784 74 // exit
samux 1:fb4494783863 75 wifi->exit();
samux 4:0bcec6272784 76 wifi->flush();
samux 1:fb4494783863 77 return 0;
samux 1:fb4494783863 78 }
samux 1:fb4494783863 79
samux 1:fb4494783863 80 // -1 if unsuccessful, else number of bytes written
samux 1:fb4494783863 81 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
samux 1:fb4494783863 82 {
samux 1:fb4494783863 83 Timer tmr;
samux 1:fb4494783863 84 int idx = 0;
samux 1:fb4494783863 85
samux 1:fb4494783863 86 confEndpoint(remote);
samux 1:fb4494783863 87
samux 1:fb4494783863 88 tmr.start();
samux 1:fb4494783863 89
samux 1:fb4494783863 90 while ((tmr.read_ms() < _timeout) || _blocking) {
samux 1:fb4494783863 91
samux 1:fb4494783863 92 idx += wifi->send(packet, length);
samux 1:fb4494783863 93
samux 1:fb4494783863 94 if (idx == length)
samux 1:fb4494783863 95 return idx;
samux 1:fb4494783863 96 }
samux 1:fb4494783863 97 return (idx == 0) ? -1 : idx;
samux 1:fb4494783863 98 }
samux 1:fb4494783863 99
samux 1:fb4494783863 100 // -1 if unsuccessful, else number of bytes received
samux 1:fb4494783863 101 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
samux 1:fb4494783863 102 {
samux 1:fb4494783863 103 Timer tmr;
samux 1:fb4494783863 104 int idx = 0;
samux 1:fb4494783863 105 int nb_available = 0;
samux 1:fb4494783863 106 int time = -1;
samux 1:fb4494783863 107
samux 1:fb4494783863 108 if (_blocking) {
samux 1:fb4494783863 109 while (1) {
samux 1:fb4494783863 110 nb_available = wifi->readable();
samux 1:fb4494783863 111 if (nb_available != 0) {
samux 1:fb4494783863 112 break;
samux 1:fb4494783863 113 }
samux 1:fb4494783863 114 }
samux 1:fb4494783863 115 }
samux 1:fb4494783863 116
samux 1:fb4494783863 117 tmr.start();
samux 1:fb4494783863 118
samux 1:fb4494783863 119 while (time < _timeout) {
samux 1:fb4494783863 120
samux 1:fb4494783863 121 nb_available = wifi->readable();
samux 1:fb4494783863 122 for (int i = 0; i < min(nb_available, length); i++) {
samux 1:fb4494783863 123 buffer[idx] = wifi->getc();
samux 1:fb4494783863 124 idx++;
samux 1:fb4494783863 125 }
samux 1:fb4494783863 126
samux 1:fb4494783863 127 if (idx == length) {
samux 1:fb4494783863 128 break;
samux 1:fb4494783863 129 }
samux 1:fb4494783863 130
samux 1:fb4494783863 131 time = tmr.read_ms();
samux 1:fb4494783863 132 }
samux 1:fb4494783863 133
samux 1:fb4494783863 134 readEndpoint(remote);
samux 1:fb4494783863 135 return (idx == 0) ? -1 : idx;
samux 1:fb4494783863 136 }
samux 1:fb4494783863 137
samux 1:fb4494783863 138 bool UDPSocket::confEndpoint(Endpoint & ep)
samux 1:fb4494783863 139 {
samux 1:fb4494783863 140 char * host;
samux 1:fb4494783863 141 char cmd[30];
samux 1:fb4494783863 142 if (!endpoint_configured) {
samux 1:fb4494783863 143 host = ep.get_address();
samux 1:fb4494783863 144 if (host[0] != '\0') {
samux 1:fb4494783863 145 // set host
samux 1:fb4494783863 146 sprintf(cmd, "set i h %s\r", host);
samux 1:fb4494783863 147 if (!wifi->sendCommand(cmd, "AOK"))
samux 1:fb4494783863 148 return false;
samux 1:fb4494783863 149
samux 1:fb4494783863 150 // set remote port
samux 1:fb4494783863 151 sprintf(cmd, "set i r %d\r", ep.get_port());
samux 1:fb4494783863 152 if (!wifi->sendCommand(cmd, "AOK"))
samux 1:fb4494783863 153 return false;
samux 1:fb4494783863 154
samux 1:fb4494783863 155 wifi->exit();
samux 1:fb4494783863 156 endpoint_configured = true;
samux 1:fb4494783863 157 return true;
samux 1:fb4494783863 158 }
samux 1:fb4494783863 159 }
samux 1:fb4494783863 160 return true;
samux 1:fb4494783863 161 }
samux 1:fb4494783863 162
samux 1:fb4494783863 163 bool UDPSocket::readEndpoint(Endpoint & ep)
samux 1:fb4494783863 164 {
samux 1:fb4494783863 165 char recv[256];
samux 1:fb4494783863 166 int begin = 0;
samux 1:fb4494783863 167 int end = 0;
samux 1:fb4494783863 168 string str;
samux 1:fb4494783863 169 string addr;
samux 1:fb4494783863 170 int port;
samux 1:fb4494783863 171 if (!endpoint_read) {
samux 1:fb4494783863 172 if (!wifi->sendCommand("get ip\r", NULL, recv))
samux 1:fb4494783863 173 return false;
samux 1:fb4494783863 174 wifi->exit();
samux 1:fb4494783863 175 str = recv;
samux 1:fb4494783863 176 begin = str.find("HOST=");
samux 1:fb4494783863 177 end = str.find("PROTO=");
samux 1:fb4494783863 178 if (begin != string::npos && end != string::npos) {
samux 1:fb4494783863 179 str = str.substr(begin + 5, end - begin - 5);
samux 1:fb4494783863 180 int pos = str.find(":");
samux 1:fb4494783863 181 if (pos != string::npos) {
samux 1:fb4494783863 182 addr = str.substr(0, pos);
samux 1:fb4494783863 183 port = atoi(str.substr(pos + 1).c_str());
samux 1:fb4494783863 184 ep.set_address(addr.c_str(), port);
samux 1:fb4494783863 185 endpoint_read = true;
samux 1:fb4494783863 186 wifi->flush();
samux 1:fb4494783863 187 return true;
samux 1:fb4494783863 188 }
samux 1:fb4494783863 189 }
samux 1:fb4494783863 190 wifi->flush();
samux 1:fb4494783863 191 }
samux 1:fb4494783863 192 return false;
samux 1:fb4494783863 193 }