#endif
#include "netbase.h"
+#include "util.h"
+#include "net.h"
extern int GetRandInt(int nMax);
} l_fp;
-inline void Ntp2Unix(uint32_t &n, time_t &u)
-{
+inline void Ntp2Unix(uint32_t &n, time_t &u) {
// Ntp's time scale starts in 1900, Unix in 1970.
u = n - 0x83aa7e80; // 2208988800 1970 - 1900 in seconds
}
-inline void ntohl_fp(l_fp *n, l_fp *h)
-{
+inline void ntohl_fp(l_fp *n, l_fp *h) {
(h)->Ul_i.Xl_ui = ntohl((n)->Ul_i.Xl_ui);
(h)->Ul_f.Xl_uf = ntohl((n)->Ul_f.Xl_uf);
}
uint8_t mac[5 * sizeof(uint32_t)]; /* mac */
};
-int nServersCount = 65;
+int nServersCount = 118;
-std::string NtpServers[65] = {
+std::string NtpServers[118] = {
// Microsoft
"time.windows.com",
// Google
"time1.google.com",
"time2.google.com",
+ "time3.google.com",
+ "time4.google.com",
+
+ // Hurricane Electric
+ "clock.sjc.he.net",
+ "clock.nyc.he.net",
+
+ // SixXS
+ "ntp.sixxs.net",
+ "ntp.eu.sixxs.net",
+ "ntp.us.sixxs.net",
+ "ntp.ap.sixxs.net",
// Russian Federation
+ "ntp.karelia.pro",
+ "ntp.alpet.me",
+ "aviel.alpet.me",
+ "ntp.sampo.ru",
+ "ntp.szt.ru",
"ntp.ix.ru",
- "0.ru.pool.ntp.org",
- "1.ru.pool.ntp.org",
- "2.ru.pool.ntp.org",
- "3.ru.pool.ntp.org",
"ntp1.stratum2.ru",
"ntp2.stratum2.ru",
"ntp3.stratum2.ru",
"ntp2.niiftri.irkutsk.ru",
"vniiftri.khv.ru",
"vniiftri2.khv.ru",
+ "ntp0.zenon.net",
+ "ntp.mobatime.ru",
+ "0.ru.pool.ntp.org",
+ "1.ru.pool.ntp.org",
+ "2.ru.pool.ntp.org",
+ "3.ru.pool.ntp.org",
// United States
+ "ntp-01.caltech.edu",
+ "ntp-02.caltech.edu",
+ "ntp-03.caltech.edu",
+ "ntp-04.caltech.edu",
"nist1-pa.ustiming.org",
"time-a.nist.gov ",
"time-b.nist.gov ",
"ntp1.bu.edu",
"ntp2.bu.edu",
"ntp3.bu.edu",
+ "0.us.pool.ntp.org",
+ "1.us.pool.ntp.org",
+ "2.us.pool.ntp.org",
+ "3.us.pool.ntp.org",
// South Africa
"ntp1.meraka.csir.co.za",
"ntp.time.org.za",
"ntp1.meraka.csir.co.za",
"ntp2.meraka.csir.co.za",
+ "0.za.pool.ntp.org",
+ "1.za.pool.ntp.org",
+ "2.za.pool.ntp.org",
+ "3.za.pool.ntp.org",
// Italy
"ntp1.inrim.it",
"ntp2.inrim.it",
+ "0.it.pool.ntp.org",
+ "1.it.pool.ntp.org",
+ "2.it.pool.ntp.org",
+ "3.it.pool.ntp.org",
+
+ // Netherlands
+ "ntp0.nl.net",
+ "ntp1.nl.net",
+ "ntp2.nl.net",
+ "ntp.utwente.nl",
+ "0.nl.pool.ntp.org",
+ "1.nl.pool.ntp.org",
+ "2.nl.pool.ntp.org",
+ "3.nl.pool.ntp.org",
+
+ // United Kingdom
+ "ntp2d.mcc.ac.uk",
+ "ntp2c.mcc.ac.uk",
+ "ntp.exnet.com",
+ "ntp.cis.strath.ac.uk",
+ "ntppub.le.ac.uk",
+ "0.uk.pool.ntp.org",
+ "1.uk.pool.ntp.org",
+ "2.uk.pool.ntp.org",
+ "3.uk.pool.ntp.org",
+
+ // Japan
+ "ntp.nict.jp",
+ "0.jp.pool.ntp.org",
+ "1.jp.pool.ntp.org",
+ "2.jp.pool.ntp.org",
+ "3.jp.pool.ntp.org",
// ... To be continued
};
-bool InitWithRandom(SOCKET &sockfd, socklen_t &servlen, struct sockaddr *pcliaddr)
-{
- int nAttempt = 0;
-
- while(nAttempt < 100)
- {
- sockfd = -1;
- nAttempt++;
-
- int nServerNum = GetRandInt(nServersCount);
-
- std::vector<CNetAddr> vIP;
- bool fRet = LookupHost(NtpServers[nServerNum].c_str(), vIP, 10, true);
- if (!fRet)
- continue;
-
- struct sockaddr_in servaddr;
- servaddr.sin_family = AF_INET;
- servaddr.sin_port = htons(123);
-
- bool found = false;
- for(unsigned int i = 0; i < vIP.size(); i++)
- {
- if ((found = vIP[i].GetInAddr(&servaddr.sin_addr)))
- {
- break;
- }
- }
-
- if (!found)
- continue;
-
- sockfd = socket(AF_INET, SOCK_DGRAM, 0);
-
- if (sockfd == INVALID_SOCKET)
- continue; // socket initialization error
-
- if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) == -1 )
- {
- continue; // "connection" error
- }
-
- *pcliaddr = *((struct sockaddr *) &servaddr);
- servlen = sizeof(servaddr);
- return true;
- }
-
- return false;
-}
-
-bool InitWithHost(std::string &strHostName, SOCKET &sockfd, socklen_t &servlen, struct sockaddr *pcliaddr)
-{
+bool InitWithHost(std::string &strHostName, SOCKET &sockfd, socklen_t &servlen, struct sockaddr *pcliaddr) {
sockfd = -1;
std::vector<CNetAddr> vIP;
bool fRet = LookupHost(strHostName.c_str(), vIP, 10, true);
- if (!fRet)
+ if (!fRet) {
return false;
+ }
struct sockaddr_in servaddr;
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(123);
bool found = false;
- for(unsigned int i = 0; i < vIP.size(); i++)
- {
- if ((found = vIP[i].GetInAddr(&servaddr.sin_addr)))
- {
+ for(unsigned int i = 0; i < vIP.size(); i++) {
+ if ((found = vIP[i].GetInAddr(&servaddr.sin_addr))) {
break;
}
}
- if (!found)
+ if (!found) {
return false;
+ }
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd == INVALID_SOCKET)
return false; // socket initialization error
- if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) == -1 )
- {
+ if (connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) == -1 ) {
return false; // "connection" error
}
+
*pcliaddr = *((struct sockaddr *) &servaddr);
servlen = sizeof(servaddr);
return true;
}
+bool InitWithRandom(SOCKET &sockfd, socklen_t &servlen, struct sockaddr *pcliaddr) {
+
+ for (int nAttempt = 0; nAttempt < nServersCount; nAttempt++) {
+ int nServerNum = GetRandInt(nServersCount);
+ if (InitWithHost(NtpServers[nServerNum], sockfd, servlen, pcliaddr)) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+int64_t DoReq(SOCKET sockfd, socklen_t servlen, struct sockaddr cliaddr) {
+#ifdef WIN32
+ u_long nOne = 1;
+ if (ioctlsocket(sockfd, FIONBIO, &nOne) == SOCKET_ERROR) {
+ printf("ConnectSocket() : ioctlsocket non-blocking setting failed, error %d\n", WSAGetLastError());
+#else
+ if (fcntl(sockfd, F_SETFL, O_NONBLOCK) == SOCKET_ERROR) {
+ printf("ConnectSocket() : fcntl non-blocking setting failed, error %d\n", errno);
+#endif
+ return -2;
+ }
-int64_t DoReq(SOCKET sockfd, socklen_t servlen, struct sockaddr cliaddr)
-{
struct pkt *msg = new pkt;
struct pkt *prt = new pkt;
msg->xmt.Ul_f.Xl_f=0;
int len=48;
- sendto(sockfd, (char *) msg, len, 0, &cliaddr, servlen);
- int n = recvfrom(sockfd, (char *) msg, len, 0, NULL, NULL);
+ int retcode = sendto(sockfd, (char *) msg, len, 0, &cliaddr, servlen);
+ if (retcode < 0) {
+ printf("sendto() failed: %d", retcode);
+ return -3;
+ }
+
+ fd_set fdset;
+ struct timeval timeout = {10, 0};
+ FD_ZERO(&fdset);
+ FD_SET(sockfd, &fdset);
+
+ retcode = select(sockfd + 1, &fdset, NULL, NULL, &timeout);
+ if (retcode <= 0) {
+ printf("recvfrom() error");
+ return -4;
+ }
+
+ recvfrom(sockfd, (char *) msg, len, 0, NULL, NULL);
ntohl_fp(&msg->rec, &prt->rec);
ntohl_fp(&msg->xmt, &prt->xmt);
return (seconds_receive + seconds_transmit) / 2;
}
-int64_t NtpGetTime()
-{
+int64_t NtpGetTime(CNetAddr& ip) {
struct sockaddr cliaddr;
SOCKET sockfd;
if (!InitWithRandom(sockfd, servlen, &cliaddr))
return -1;
+ ip = CNetAddr(((sockaddr_in *)&cliaddr)->sin_addr);
int64_t nTime = DoReq(sockfd, servlen, cliaddr);
closesocket(sockfd);
return nTime;
}
+
+void ThreadNtpSamples(void* parg)
+{
+ printf("ThreadNtpSamples started\n");
+ vnThreadsRunning[THREAD_NTP]++;
+
+ // Make this thread recognisable as time synchronization thread
+ RenameThread("novacoin-ntp-samples");
+
+ while (!fShutdown) {
+ CNetAddr ip;
+ int64_t nTime = NtpGetTime(ip);
+
+ if (nTime > 0 && nTime != 2085978496) { // Skip the deliberately wrong timestamps
+ AddTimeData(ip, nTime);
+ }
+ else {
+ Sleep(600000); // In case of failure wait 600 seconds and then try again
+ continue;
+ }
+
+ Sleep(43200000); // Sleep for 12 hours
+ }
+
+ vnThreadsRunning[THREAD_NTP]--;
+ printf("ThreadNtpSamples exited\n");
+}
git://git.novaco.in / novacoin.git / blobdiff