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Dependencies:   mbed

NetServices/services/ntp/NTPClient.cpp@1:f5ac63519541, 2014-03-05 (annotated)

Committer:
Michael J. Spencer
Date:
Wed Mar 05 06:14:02 2014 -0800
Revision:
1:f5ac63519541
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 1:f5ac63519541 1 #pragma diag_remark 1293
Michael J. Spencer 1:f5ac63519541 2 /*
Michael J. Spencer 1:f5ac63519541 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
Michael J. Spencer 1:f5ac63519541 4
Michael J. Spencer 1:f5ac63519541 5 Permission is hereby granted, free of charge, to any person obtaining a copy
Michael J. Spencer 1:f5ac63519541 6 of this software and associated documentation files (the "Software"), to deal
Michael J. Spencer 1:f5ac63519541 7 in the Software without restriction, including without limitation the rights
Michael J. Spencer 1:f5ac63519541 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Michael J. Spencer 1:f5ac63519541 9 copies of the Software, and to permit persons to whom the Software is
Michael J. Spencer 1:f5ac63519541 10 furnished to do so, subject to the following conditions:
Michael J. Spencer 1:f5ac63519541 11
Michael J. Spencer 1:f5ac63519541 12 The above copyright notice and this permission notice shall be included in
Michael J. Spencer 1:f5ac63519541 13 all copies or substantial portions of the Software.
Michael J. Spencer 1:f5ac63519541 14
Michael J. Spencer 1:f5ac63519541 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Michael J. Spencer 1:f5ac63519541 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Michael J. Spencer 1:f5ac63519541 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Michael J. Spencer 1:f5ac63519541 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Michael J. Spencer 1:f5ac63519541 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Michael J. Spencer 1:f5ac63519541 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Michael J. Spencer 1:f5ac63519541 21 THE SOFTWARE.
Michael J. Spencer 1:f5ac63519541 22 */
Michael J. Spencer 1:f5ac63519541 23
Michael J. Spencer 1:f5ac63519541 24 #include "NTPClient.h"
Michael J. Spencer 1:f5ac63519541 25
Michael J. Spencer 1:f5ac63519541 26 #include <stdio.h>
Michael J. Spencer 1:f5ac63519541 27
Michael J. Spencer 1:f5ac63519541 28 //#define __DEBUG
Michael J. Spencer 1:f5ac63519541 29 #include "dbg/dbg.h"
Michael J. Spencer 1:f5ac63519541 30
Michael J. Spencer 1:f5ac63519541 31 #define NTP_PORT 123
Michael J. Spencer 1:f5ac63519541 32 #define NTP_CLIENT_PORT 0//50420 //Random port
Michael J. Spencer 1:f5ac63519541 33 #define NTP_REQUEST_TIMEOUT 15000
Michael J. Spencer 1:f5ac63519541 34 #define NTP_TIMESTAMP_DELTA 2208988800ull //Diff btw a UNIX timestamp (Starting Jan, 1st 1970) and a NTP timestamp (Starting Jan, 1st 1900)
Michael J. Spencer 1:f5ac63519541 35
Michael J. Spencer 1:f5ac63519541 36 #define htons( x ) ( (( x << 8 ) & 0xFF00) | (( x >> 8 ) & 0x00FF) )
Michael J. Spencer 1:f5ac63519541 37 #define ntohs( x ) (htons(x))
Michael J. Spencer 1:f5ac63519541 38
Michael J. Spencer 1:f5ac63519541 39 #define htonl( x ) ( (( x << 24 ) & 0xFF000000) \
Michael J. Spencer 1:f5ac63519541 40 | (( x << 8 ) & 0x00FF0000) \
Michael J. Spencer 1:f5ac63519541 41 | (( x >> 8 ) & 0x0000FF00) \
Michael J. Spencer 1:f5ac63519541 42 | (( x >> 24 ) & 0x000000FF) )
Michael J. Spencer 1:f5ac63519541 43 #define ntohl( x ) (htonl(x))
Michael J. Spencer 1:f5ac63519541 44
Michael J. Spencer 1:f5ac63519541 45 NTPClient::NTPClient() : NetService(false), m_state(NTP_PING), m_pCbItem(NULL), m_pCbMeth(NULL), m_pCb(NULL),
Michael J. Spencer 1:f5ac63519541 46 m_watchdog(), m_timeout(0), m_closed(true), m_host(), m_pDnsReq(NULL), m_blockingResult(NTP_PROCESSING)
Michael J. Spencer 1:f5ac63519541 47 {
Michael J. Spencer 1:f5ac63519541 48 setTimeout(NTP_REQUEST_TIMEOUT);
Michael J. Spencer 1:f5ac63519541 49 DBG("\r\nNew NTPClient %p\r\n",this);
Michael J. Spencer 1:f5ac63519541 50 }
Michael J. Spencer 1:f5ac63519541 51
Michael J. Spencer 1:f5ac63519541 52 NTPClient::~NTPClient()
Michael J. Spencer 1:f5ac63519541 53 {
Michael J. Spencer 1:f5ac63519541 54 close();
Michael J. Spencer 1:f5ac63519541 55 }
Michael J. Spencer 1:f5ac63519541 56
Michael J. Spencer 1:f5ac63519541 57 //High level setup functions
Michael J. Spencer 1:f5ac63519541 58 NTPResult NTPClient::setTime(const Host& host) //Blocking
Michael J. Spencer 1:f5ac63519541 59 {
Michael J. Spencer 1:f5ac63519541 60 doSetTime(host);
Michael J. Spencer 1:f5ac63519541 61 return blockingProcess();
Michael J. Spencer 1:f5ac63519541 62 }
Michael J. Spencer 1:f5ac63519541 63
Michael J. Spencer 1:f5ac63519541 64 NTPResult NTPClient::setTime(const Host& host, void (*pMethod)(NTPResult)) //Non blocking
Michael J. Spencer 1:f5ac63519541 65 {
Michael J. Spencer 1:f5ac63519541 66 setOnResult(pMethod);
Michael J. Spencer 1:f5ac63519541 67 doSetTime(host);
Michael J. Spencer 1:f5ac63519541 68 return NTP_PROCESSING;
Michael J. Spencer 1:f5ac63519541 69 }
Michael J. Spencer 1:f5ac63519541 70
Michael J. Spencer 1:f5ac63519541 71 #if 0 //For doc only
Michael J. Spencer 1:f5ac63519541 72 template<class T>
Michael J. Spencer 1:f5ac63519541 73 NTPResult NTPClient::setTime(const Host& host, T* pItem, void (T::*pMethod)(NTPResult)) //Non blocking
Michael J. Spencer 1:f5ac63519541 74 {
Michael J. Spencer 1:f5ac63519541 75 setOnResult(pItem, pMethod);
Michael J. Spencer 1:f5ac63519541 76 doSetTime(host);
Michael J. Spencer 1:f5ac63519541 77 return NTP_PROCESSING;
Michael J. Spencer 1:f5ac63519541 78 }
Michael J. Spencer 1:f5ac63519541 79 #endif
Michael J. Spencer 1:f5ac63519541 80
Michael J. Spencer 1:f5ac63519541 81 void NTPClient::doSetTime(const Host& host)
Michael J. Spencer 1:f5ac63519541 82 {
Michael J. Spencer 1:f5ac63519541 83 init();
Michael J. Spencer 1:f5ac63519541 84 resetTimeout();
Michael J. Spencer 1:f5ac63519541 85 m_host = host;
Michael J. Spencer 1:f5ac63519541 86 if(!m_host.getPort())
Michael J. Spencer 1:f5ac63519541 87 {
Michael J. Spencer 1:f5ac63519541 88 m_host.setPort(NTP_PORT);
Michael J. Spencer 1:f5ac63519541 89 }
Michael J. Spencer 1:f5ac63519541 90 if(m_host.getIp().isNull())
Michael J. Spencer 1:f5ac63519541 91 {
Michael J. Spencer 1:f5ac63519541 92 //DNS query required
Michael J. Spencer 1:f5ac63519541 93 m_pDnsReq = new DNSRequest();
Michael J. Spencer 1:f5ac63519541 94 DBG("\r\nNTPClient : DNSRequest %p\r\n", m_pDnsReq);
Michael J. Spencer 1:f5ac63519541 95 m_pDnsReq->setOnReply(this, &NTPClient::onDNSReply);
Michael J. Spencer 1:f5ac63519541 96 m_pDnsReq->resolve(&m_host);
Michael J. Spencer 1:f5ac63519541 97 return;
Michael J. Spencer 1:f5ac63519541 98 }
Michael J. Spencer 1:f5ac63519541 99 open();
Michael J. Spencer 1:f5ac63519541 100 }
Michael J. Spencer 1:f5ac63519541 101
Michael J. Spencer 1:f5ac63519541 102 void NTPClient::setOnResult( void (*pMethod)(NTPResult) )
Michael J. Spencer 1:f5ac63519541 103 {
Michael J. Spencer 1:f5ac63519541 104 m_pCb = pMethod;
Michael J. Spencer 1:f5ac63519541 105 }
Michael J. Spencer 1:f5ac63519541 106
Michael J. Spencer 1:f5ac63519541 107 void NTPClient::close()
Michael J. Spencer 1:f5ac63519541 108 {
Michael J. Spencer 1:f5ac63519541 109 if(m_closed)
Michael J. Spencer 1:f5ac63519541 110 return;
Michael J. Spencer 1:f5ac63519541 111 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
Michael J. Spencer 1:f5ac63519541 112 m_watchdog.stop();
Michael J. Spencer 1:f5ac63519541 113 m_pUDPSocket->resetOnEvent();
Michael J. Spencer 1:f5ac63519541 114 m_pUDPSocket->close();
Michael J. Spencer 1:f5ac63519541 115 delete m_pUDPSocket;
Michael J. Spencer 1:f5ac63519541 116 if( m_pDnsReq )
Michael J. Spencer 1:f5ac63519541 117 {
Michael J. Spencer 1:f5ac63519541 118 m_pDnsReq->close();
Michael J. Spencer 1:f5ac63519541 119 delete m_pDnsReq;
Michael J. Spencer 1:f5ac63519541 120 m_pDnsReq = NULL;
Michael J. Spencer 1:f5ac63519541 121 }
Michael J. Spencer 1:f5ac63519541 122 }
Michael J. Spencer 1:f5ac63519541 123
Michael J. Spencer 1:f5ac63519541 124 void NTPClient::poll() //Called by NetServices
Michael J. Spencer 1:f5ac63519541 125 {
Michael J. Spencer 1:f5ac63519541 126 if( (!m_closed) && (m_watchdog.read_ms() >= m_timeout) )
Michael J. Spencer 1:f5ac63519541 127 {
Michael J. Spencer 1:f5ac63519541 128 onTimeout();
Michael J. Spencer 1:f5ac63519541 129 }
Michael J. Spencer 1:f5ac63519541 130 }
Michael J. Spencer 1:f5ac63519541 131
Michael J. Spencer 1:f5ac63519541 132 void NTPClient::init() //Create and setup socket if needed
Michael J. Spencer 1:f5ac63519541 133 {
Michael J. Spencer 1:f5ac63519541 134 if(!m_closed) //Already opened
Michael J. Spencer 1:f5ac63519541 135 return;
Michael J. Spencer 1:f5ac63519541 136 m_state = NTP_PING;
Michael J. Spencer 1:f5ac63519541 137 m_pUDPSocket = new UDPSocket;
Michael J. Spencer 1:f5ac63519541 138 m_pUDPSocket->setOnEvent(this, &NTPClient::onUDPSocketEvent);
Michael J. Spencer 1:f5ac63519541 139 m_closed = false;
Michael J. Spencer 1:f5ac63519541 140 DBG("NTPClient: Init OK\n");
Michael J. Spencer 1:f5ac63519541 141 }
Michael J. Spencer 1:f5ac63519541 142
Michael J. Spencer 1:f5ac63519541 143 void NTPClient::open()
Michael J. Spencer 1:f5ac63519541 144 {
Michael J. Spencer 1:f5ac63519541 145 resetTimeout();
Michael J. Spencer 1:f5ac63519541 146 DBG("Opening connection\n");
Michael J. Spencer 1:f5ac63519541 147 m_state = NTP_PING;
Michael J. Spencer 1:f5ac63519541 148 Host localhost(IpAddr(), NTP_CLIENT_PORT, "localhost"); //Any local address
Michael J. Spencer 1:f5ac63519541 149 m_pUDPSocket->bind(localhost);
Michael J. Spencer 1:f5ac63519541 150 if ((int)time(NULL) < 1280000000) set_time( 1280000000 ); //End of July 2010... just there to limit offset range
Michael J. Spencer 1:f5ac63519541 151 process();
Michael J. Spencer 1:f5ac63519541 152 }
Michael J. Spencer 1:f5ac63519541 153
Michael J. Spencer 1:f5ac63519541 154 #define MIN(a,b) ((a)<(b))?(a):(b)
Michael J. Spencer 1:f5ac63519541 155 void NTPClient::process() //Main state-machine
Michael J. Spencer 1:f5ac63519541 156 {
Michael J. Spencer 1:f5ac63519541 157 int len;
Michael J. Spencer 1:f5ac63519541 158 Host host;
Michael J. Spencer 1:f5ac63519541 159
Michael J. Spencer 1:f5ac63519541 160 switch(m_state)
Michael J. Spencer 1:f5ac63519541 161 {
Michael J. Spencer 1:f5ac63519541 162 case NTP_PING:
Michael J. Spencer 1:f5ac63519541 163 DBG("\r\nPing\r\n");
Michael J. Spencer 1:f5ac63519541 164 //Prepare NTP Packet:
Michael J. Spencer 1:f5ac63519541 165 m_pkt.li = 0; //Leap Indicator : No warning
Michael J. Spencer 1:f5ac63519541 166 m_pkt.vn = 4; //Version Number : 4
Michael J. Spencer 1:f5ac63519541 167 m_pkt.mode = 3; //Client mode
Michael J. Spencer 1:f5ac63519541 168 m_pkt.stratum = 0; //Not relevant here
Michael J. Spencer 1:f5ac63519541 169 m_pkt.poll = 0; //Not significant as well
Michael J. Spencer 1:f5ac63519541 170 m_pkt.precision = 0; //Neither this one is
Michael J. Spencer 1:f5ac63519541 171
Michael J. Spencer 1:f5ac63519541 172 m_pkt.rootDelay = 0; //Or this one
Michael J. Spencer 1:f5ac63519541 173 m_pkt.rootDispersion = 0; //Or that one
Michael J. Spencer 1:f5ac63519541 174 m_pkt.refId = 0; //...
Michael J. Spencer 1:f5ac63519541 175
Michael J. Spencer 1:f5ac63519541 176 m_pkt.refTm_s = 0;
Michael J. Spencer 1:f5ac63519541 177 m_pkt.origTm_s = 0;
Michael J. Spencer 1:f5ac63519541 178 m_pkt.rxTm_s = 0;
Michael J. Spencer 1:f5ac63519541 179 m_pkt.txTm_s = htonl( NTP_TIMESTAMP_DELTA + time(NULL) ); //WARN: We are in LE format, network byte order is BE
Michael J. Spencer 1:f5ac63519541 180
Michael J. Spencer 1:f5ac63519541 181 m_pkt.refTm_f = m_pkt.origTm_f = m_pkt.rxTm_f = m_pkt.txTm_f = 0;
Michael J. Spencer 1:f5ac63519541 182
Michael J. Spencer 1:f5ac63519541 183 #ifdef __DEBUG
Michael J. Spencer 1:f5ac63519541 184 //Hex Dump:
Michael J. Spencer 1:f5ac63519541 185 DBG("\r\nDump Tx:\r\n");
Michael J. Spencer 1:f5ac63519541 186 for(int i = 0; i< sizeof(NTPPacket); i++)
Michael J. Spencer 1:f5ac63519541 187 {
Michael J. Spencer 1:f5ac63519541 188 DBG("%02x ", *((char*)&m_pkt + i));
Michael J. Spencer 1:f5ac63519541 189 }
Michael J. Spencer 1:f5ac63519541 190 DBG("\r\n\r\n");
Michael J. Spencer 1:f5ac63519541 191 #endif
Michael J. Spencer 1:f5ac63519541 192
Michael J. Spencer 1:f5ac63519541 193 len = m_pUDPSocket->sendto( (char*)&m_pkt, sizeof(NTPPacket), &m_host );
Michael J. Spencer 1:f5ac63519541 194 if(len < sizeof(NTPPacket))
Michael J. Spencer 1:f5ac63519541 195 { onResult(NTP_PRTCL); close(); return; }
Michael J. Spencer 1:f5ac63519541 196
Michael J. Spencer 1:f5ac63519541 197 m_state = NTP_PONG;
Michael J. Spencer 1:f5ac63519541 198
Michael J. Spencer 1:f5ac63519541 199 break;
Michael J. Spencer 1:f5ac63519541 200
Michael J. Spencer 1:f5ac63519541 201 case NTP_PONG:
Michael J. Spencer 1:f5ac63519541 202 DBG("\r\nPong\r\n");
Michael J. Spencer 1:f5ac63519541 203 while( len = m_pUDPSocket->recvfrom( (char*)&m_pkt, sizeof(NTPPacket), &host ) )
Michael J. Spencer 1:f5ac63519541 204 {
Michael J. Spencer 1:f5ac63519541 205 if( len <= 0 )
Michael J. Spencer 1:f5ac63519541 206 break;
Michael J. Spencer 1:f5ac63519541 207 if( !host.getIp().isEq(m_host.getIp()) )
Michael J. Spencer 1:f5ac63519541 208 continue; //Not our packet
Michael J. Spencer 1:f5ac63519541 209 if( len > 0 )
Michael J. Spencer 1:f5ac63519541 210 break;
Michael J. Spencer 1:f5ac63519541 211 }
Michael J. Spencer 1:f5ac63519541 212
Michael J. Spencer 1:f5ac63519541 213 if(len == 0)
Michael J. Spencer 1:f5ac63519541 214 return; //Wait for the next packet
Michael J. Spencer 1:f5ac63519541 215
Michael J. Spencer 1:f5ac63519541 216 if(len < 0)
Michael J. Spencer 1:f5ac63519541 217 { onResult(NTP_PRTCL); close(); return; }
Michael J. Spencer 1:f5ac63519541 218
Michael J. Spencer 1:f5ac63519541 219 if(len < sizeof(NTPPacket)) //TODO: Accept chunks
Michael J. Spencer 1:f5ac63519541 220 { onResult(NTP_PRTCL); close(); return; }
Michael J. Spencer 1:f5ac63519541 221
Michael J. Spencer 1:f5ac63519541 222 #ifdef __DEBUG
Michael J. Spencer 1:f5ac63519541 223 //Hex Dump:
Michael J. Spencer 1:f5ac63519541 224 DBG("\r\nDump Rx:\r\n");
Michael J. Spencer 1:f5ac63519541 225 for(int i = 0; i< sizeof(NTPPacket); i++)
Michael J. Spencer 1:f5ac63519541 226 {
Michael J. Spencer 1:f5ac63519541 227 DBG("%02x ", *((char*)&m_pkt + i));
Michael J. Spencer 1:f5ac63519541 228 }
Michael J. Spencer 1:f5ac63519541 229 DBG("\r\n\r\n");
Michael J. Spencer 1:f5ac63519541 230 #endif
Michael J. Spencer 1:f5ac63519541 231
Michael J. Spencer 1:f5ac63519541 232 if( m_pkt.stratum == 0) //Kiss of death message : Not good !
Michael J. Spencer 1:f5ac63519541 233 {
Michael J. Spencer 1:f5ac63519541 234 onResult(NTP_PRTCL); close(); return;
Michael J. Spencer 1:f5ac63519541 235 }
Michael J. Spencer 1:f5ac63519541 236
Michael J. Spencer 1:f5ac63519541 237 //Correct Endianness
Michael J. Spencer 1:f5ac63519541 238 m_pkt.refTm_s = ntohl( m_pkt.refTm_s );
Michael J. Spencer 1:f5ac63519541 239 m_pkt.refTm_f = ntohl( m_pkt.refTm_f );
Michael J. Spencer 1:f5ac63519541 240 m_pkt.origTm_s = ntohl( m_pkt.origTm_s );
Michael J. Spencer 1:f5ac63519541 241 m_pkt.origTm_f = ntohl( m_pkt.origTm_f );
Michael J. Spencer 1:f5ac63519541 242 m_pkt.rxTm_s = ntohl( m_pkt.rxTm_s );
Michael J. Spencer 1:f5ac63519541 243 m_pkt.rxTm_f = ntohl( m_pkt.rxTm_f );
Michael J. Spencer 1:f5ac63519541 244 m_pkt.txTm_s = ntohl( m_pkt.txTm_s );
Michael J. Spencer 1:f5ac63519541 245 m_pkt.txTm_f = ntohl( m_pkt.txTm_f );
Michael J. Spencer 1:f5ac63519541 246
Michael J. Spencer 1:f5ac63519541 247 //Compute offset, see RFC 4330 p.13
Michael J. Spencer 1:f5ac63519541 248 uint32_t destTm_s = (NTP_TIMESTAMP_DELTA + time(NULL));
Michael J. Spencer 1:f5ac63519541 249 //int32_t origTm = (int32_t) ((uint64_t) m_pkt.origTm - NTP_TIMESTAMP_DELTA); //Convert in local 32 bits timestamps
Michael J. Spencer 1:f5ac63519541 250 //int32_t rxTm = (int32_t) ((uint64_t) m_pkt.rxTm - NTP_TIMESTAMP_DELTA); //Convert in local 32 bits timestamps
Michael J. Spencer 1:f5ac63519541 251 //int32_t txTm = (int32_t) ((uint64_t) m_pkt.txTm - NTP_TIMESTAMP_DELTA); //Convert in local 32 bits timestamps
Michael J. Spencer 1:f5ac63519541 252 // int64_t offset = ( ( ( m_pkt.rxTm_s - m_pkt.origTm_s ) + ( m_pkt.txTm_s - destTm_s ) ) << 32 + ( ( m_pkt.rxTm_f - m_pkt.origTm_f ) + ( m_pkt.txTm_f - 0 ) ) ) / 2;
Michael J. Spencer 1:f5ac63519541 253 int64_t offset = ( (int64_t)( m_pkt.rxTm_s - m_pkt.origTm_s ) + (int64_t) ( m_pkt.txTm_s - destTm_s ) ) / 2; //Avoid overflow
Michael J. Spencer 1:f5ac63519541 254 DBG("\r\nSent @%d\r\n", m_pkt.txTm_s);
Michael J. Spencer 1:f5ac63519541 255 DBG("\r\nOffset: %d\r\n", offset);
Michael J. Spencer 1:f5ac63519541 256 //Set time accordingly
Michael J. Spencer 1:f5ac63519541 257 set_time( time(NULL) + (offset /*>> 32*/) );
Michael J. Spencer 1:f5ac63519541 258
Michael J. Spencer 1:f5ac63519541 259 onResult(NTP_OK);
Michael J. Spencer 1:f5ac63519541 260 close();
Michael J. Spencer 1:f5ac63519541 261
Michael J. Spencer 1:f5ac63519541 262 break;
Michael J. Spencer 1:f5ac63519541 263 }
Michael J. Spencer 1:f5ac63519541 264 }
Michael J. Spencer 1:f5ac63519541 265
Michael J. Spencer 1:f5ac63519541 266 void NTPClient::setTimeout(int ms)
Michael J. Spencer 1:f5ac63519541 267 {
Michael J. Spencer 1:f5ac63519541 268 m_timeout = ms;
Michael J. Spencer 1:f5ac63519541 269 }
Michael J. Spencer 1:f5ac63519541 270
Michael J. Spencer 1:f5ac63519541 271 void NTPClient::resetTimeout()
Michael J. Spencer 1:f5ac63519541 272 {
Michael J. Spencer 1:f5ac63519541 273 m_watchdog.reset();
Michael J. Spencer 1:f5ac63519541 274 m_watchdog.start();
Michael J. Spencer 1:f5ac63519541 275 }
Michael J. Spencer 1:f5ac63519541 276
Michael J. Spencer 1:f5ac63519541 277 void NTPClient::onTimeout() //Connection has timed out
Michael J. Spencer 1:f5ac63519541 278 {
Michael J. Spencer 1:f5ac63519541 279 close();
Michael J. Spencer 1:f5ac63519541 280 onResult(NTP_TIMEOUT);
Michael J. Spencer 1:f5ac63519541 281 }
Michael J. Spencer 1:f5ac63519541 282
Michael J. Spencer 1:f5ac63519541 283 void NTPClient::onDNSReply(DNSReply r)
Michael J. Spencer 1:f5ac63519541 284 {
Michael J. Spencer 1:f5ac63519541 285 if(m_closed)
Michael J. Spencer 1:f5ac63519541 286 {
Michael J. Spencer 1:f5ac63519541 287 DBG("\r\nWARN: Discarded\r\n");
Michael J. Spencer 1:f5ac63519541 288 return;
Michael J. Spencer 1:f5ac63519541 289 }
Michael J. Spencer 1:f5ac63519541 290
Michael J. Spencer 1:f5ac63519541 291 if( r != DNS_FOUND )
Michael J. Spencer 1:f5ac63519541 292 {
Michael J. Spencer 1:f5ac63519541 293 DBG("\r\nCould not resolve hostname.\r\n");
Michael J. Spencer 1:f5ac63519541 294 onResult(NTP_DNS);
Michael J. Spencer 1:f5ac63519541 295 close();
Michael J. Spencer 1:f5ac63519541 296 return;
Michael J. Spencer 1:f5ac63519541 297 }
Michael J. Spencer 1:f5ac63519541 298 DBG("\r\nDNS resolved.\r\n");
Michael J. Spencer 1:f5ac63519541 299 m_pDnsReq->close();
Michael J. Spencer 1:f5ac63519541 300 delete m_pDnsReq;
Michael J. Spencer 1:f5ac63519541 301 m_pDnsReq=NULL;
Michael J. Spencer 1:f5ac63519541 302 open();
Michael J. Spencer 1:f5ac63519541 303 }
Michael J. Spencer 1:f5ac63519541 304
Michael J. Spencer 1:f5ac63519541 305 void NTPClient::onUDPSocketEvent(UDPSocketEvent e)
Michael J. Spencer 1:f5ac63519541 306 {
Michael J. Spencer 1:f5ac63519541 307 resetTimeout();
Michael J. Spencer 1:f5ac63519541 308 switch(e)
Michael J. Spencer 1:f5ac63519541 309 {
Michael J. Spencer 1:f5ac63519541 310 case UDPSOCKET_READABLE: //The only event for now
Michael J. Spencer 1:f5ac63519541 311 resetTimeout();
Michael J. Spencer 1:f5ac63519541 312 process();
Michael J. Spencer 1:f5ac63519541 313 break;
Michael J. Spencer 1:f5ac63519541 314 }
Michael J. Spencer 1:f5ac63519541 315 }
Michael J. Spencer 1:f5ac63519541 316
Michael J. Spencer 1:f5ac63519541 317 void NTPClient::onResult(NTPResult r) //Must be called by impl when the request completes
Michael J. Spencer 1:f5ac63519541 318 {
Michael J. Spencer 1:f5ac63519541 319 if(m_pCbItem && m_pCbMeth)
Michael J. Spencer 1:f5ac63519541 320 (m_pCbItem->*m_pCbMeth)(r);
Michael J. Spencer 1:f5ac63519541 321 else if(m_pCb)
Michael J. Spencer 1:f5ac63519541 322 m_pCb(r);
Michael J. Spencer 1:f5ac63519541 323 m_blockingResult = r; //Blocking mode
Michael J. Spencer 1:f5ac63519541 324 }
Michael J. Spencer 1:f5ac63519541 325
Michael J. Spencer 1:f5ac63519541 326 NTPResult NTPClient::blockingProcess() //Called in blocking mode, calls Net::poll() until return code is available
Michael J. Spencer 1:f5ac63519541 327 {
Michael J. Spencer 1:f5ac63519541 328 m_blockingResult = NTP_PROCESSING;
Michael J. Spencer 1:f5ac63519541 329 do
Michael J. Spencer 1:f5ac63519541 330 {
Michael J. Spencer 1:f5ac63519541 331 Net::poll();
Michael J. Spencer 1:f5ac63519541 332 } while(m_blockingResult == NTP_PROCESSING);
Michael J. Spencer 1:f5ac63519541 333 Net::poll(); //Necessary for cleanup
Michael J. Spencer 1:f5ac63519541 334 return m_blockingResult;
Michael J. Spencer 1:f5ac63519541 335 }