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Code Issues Actions 1 Packages Projects Releases Wiki Activity

完善了获取 NTP 时间

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ZCShou 2020-09-08 20:21:58 +08:00
parent b5db9c57fa
commit d7801651e1
5 changed files with 219 additions and 264 deletions
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app/release/app-release.apk
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143
app/src/main/java/com/zcshou/gogogo/MainActivity.java
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@ -21,6 +21,7 @@ import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.SystemClock;
import android.provider.Settings;
import android.util.Log;
import android.view.Gravity;
@ -92,7 +93,6 @@ import org.json.JSONException;
import org.json.JSONObject;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
@ -100,7 +100,8 @@ import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import mapapi.overlayutil.PoiOverlay;
@ -108,6 +109,7 @@ import com.zcshou.log4j.LogUtil;
import com.zcshou.service.GoGoGoService;
import com.zcshou.database.HistoryLocationDataBaseHelper;
import com.zcshou.database.HistorySearchDataBaseHelper;
import com.zcshou.service.GoSntpClient;
import com.zcshou.utils.MapUtils;
import static com.zcshou.gogogo.R.drawable;
@ -182,6 +184,8 @@ public class MainActivity extends AppCompatActivity
private boolean isSubmit;
private SuggestionSearch mSuggestionSearch;
Date mDate;
//log debug
private static final Logger log = Logger.getLogger(MainActivity.class);
@ -300,20 +304,11 @@ public class MainActivity extends AppCompatActivity
setSearchSuggestListener();
setUserLimitInfo();
}
private long getLocalTimeStamp() throws ParseException {
SimpleDateFormat dff = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
TimeTask timeTask = new TimeTask();
dff.setTimeZone(TimeZone.getTimeZone("GMT+08"));
Date date = dff.parse(dff.format(new Date()));
if (date != null) {
return date.getTime() / 1000;
} else {
return mTS;
}
ExecutorService threadExecutor = Executors.newSingleThreadExecutor();
threadExecutor.submit(timeTask);
}
@SuppressLint("InflateParams")
@ -1068,69 +1063,66 @@ public class MainActivity extends AppCompatActivity
faBtnStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
if (getLocalTimeStamp() < mTS) { // 时间限制
//悬浮窗权限判断
if (Build.VERSION.SDK_INT >= 23 && !Settings.canDrawOverlays(getApplicationContext())) {
showEnableFloatWindowDialog();
if (mDate != null && mDate.getTime()/1000 < mTS) { // 时间限制
//悬浮窗权限判断
if (Build.VERSION.SDK_INT >= 23 && !Settings.canDrawOverlays(getApplicationContext())) {
showEnableFloatWindowDialog();
} else {
isGPSOpen = isGpsOpened();
if (!isGPSOpen) {
showEnableGpsDialog();
} else {
isGPSOpen = isGpsOpened();
if (!isGPSOpen) {
showEnableGpsDialog();
//gps是否开启
if (!isMapLoc) {
// 如果GPS定位开启，则打开定位图层
openMapLocateLayer();
isMapLoc = true;
}
if (!isAllowMockLocation()) {
showEnableMockLocationDialog();
} else {
//gps是否开启
if (!isMapLoc) {
// 如果GPS定位开启，则打开定位图层
openMapLocateLayer();
isMapLoc = true;
}
if (!isMockServStart && !isServiceRun) {
Log.d("DEBUG", "Current Baidu LatLng: " + curMapLatLng.longitude + " " + curMapLatLng.latitude);
log.debug("Current Baidu LatLng: " + curMapLatLng.longitude + " " + curMapLatLng.latitude);
if (!isAllowMockLocation()) {
showEnableMockLocationDialog();
} else {
if (!isMockServStart && !isServiceRun) {
Log.d("DEBUG", "Current Baidu LatLng: " + curMapLatLng.longitude + " " + curMapLatLng.latitude);
log.debug("Current Baidu LatLng: " + curMapLatLng.longitude + " " + curMapLatLng.latitude);
markSelectedPosition();
markSelectedPosition();
//start mock location service
Intent mockLocServiceIntent = new Intent(MainActivity.this, GoGoGoService.class);
mockLocServiceIntent.putExtra("CurLatLng", curLatLng);
mockLocServiceIntent.putExtra("DT", mDate.getTime() / 1000);
//start mock location service
Intent mockLocServiceIntent = new Intent(MainActivity.this, GoGoGoService.class);
mockLocServiceIntent.putExtra("CurLatLng", curLatLng);
//save record
recordGetPositionInfo();
//save record
recordGetPositionInfo();
//insert end
if (Build.VERSION.SDK_INT >= 26) {
startForegroundService(mockLocServiceIntent);
Log.d("DEBUG", "startForegroundService: GoGoGoService");
log.debug("startForegroundService: GoGoGoService");
} else {
startService(mockLocServiceIntent);
Log.d("DEBUG", "startService: GoGoGoService");
log.debug("startService: GoGoGoService");
}
isMockServStart = true;
Snackbar.make(view, "位置模拟已开启", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
faBtnStart.hide();
faBtnStop.show();
//track
//insert end
if (Build.VERSION.SDK_INT >= 26) {
startForegroundService(mockLocServiceIntent);
Log.d("DEBUG", "startForegroundService: GoGoGoService");
log.debug("startForegroundService: GoGoGoService");
} else {
Snackbar.make(view, "位置模拟已在运行", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
faBtnStart.hide();
faBtnStop.show();
isMockServStart = true;
startService(mockLocServiceIntent);
Log.d("DEBUG", "startService: GoGoGoService");
log.debug("startService: GoGoGoService");
}
isMockServStart = true;
Snackbar.make(view, "位置模拟已开启", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
faBtnStart.hide();
faBtnStop.show();
//track
} else {
Snackbar.make(view, "位置模拟已在运行", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
faBtnStart.hide();
faBtnStop.show();
isMockServStart = true;
}
}
}
}
} catch (ParseException e) {
e.printStackTrace();
}
}
});
@ -1809,6 +1801,27 @@ public class MainActivity extends AppCompatActivity
}
}
private class TimeTask implements Runnable {
private String[] ntpServerPool = {"ntp1.aliyun.com", "ntp2.aliyun.com", "ntp3.aliyun.com", "ntp4.aliyun.com", "ntp5.aliyun.com", "ntp6.aliyun.com", "ntp7.aliyun.com",
"cn.pool.ntp.org", "cn.ntp.org.cn", "sg.pool.ntp.org", "tw.pool.ntp.org", "jp.pool.ntp.org", "hk.pool.ntp.org", "th.pool.ntp.org",
"time.windows.com", "time.nist.gov", "time.apple.com", "time.asia.apple.com",
"dns1.synet.edu.cn", "news.neu.edu.cn", "dns.sjtu.edu.cn", "dns2.synet.edu.cn", "ntp.glnet.edu.cn", "s2g.time.edu.cn",
"ntp-sz.chl.la", "ntp.gwadar.cn", "3.asia.pool.ntp.org"};
@Override
public void run() {
GoSntpClient GoSntpClient = new GoSntpClient();
for (String serverHost : ntpServerPool) {
if (GoSntpClient.requestTime(serverHost, 30000)) {
long now = GoSntpClient.getNtpTime() + SystemClock.elapsedRealtime() - GoSntpClient.getNtpTimeReference();
mDate = new Date(now);
Log.d("MainActivity", mDate.toString());
break;
}
}
}
}
public void DisplayToast(String str) {
Toast toast = Toast.makeText(MainActivity.this, str, Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP, 0, 220);

137
app/src/main/java/com/zcshou/gogogo/WelcomeActivity.java
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@ -15,17 +15,17 @@ import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.preference.PreferenceManager;
import android.view.Gravity;
import android.os.SystemClock;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import com.zcshou.service.GoSntpClient;
import java.util.ArrayList;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class WelcomeActivity extends AppCompatActivity {
private Button startBtn;
@ -33,6 +33,7 @@ public class WelcomeActivity extends AppCompatActivity {
private static final long mTS = 1630972800;
int cnt;
boolean isPermission;
boolean isLimit;
static final int SDK_PERMISSION_REQUEST = 127;
ArrayList<String> ReqPermissions = new ArrayList<>();
@ -52,43 +53,30 @@ public class WelcomeActivity extends AppCompatActivity {
PreferenceManager.setDefaultValues(this, R.xml.preferences_main, false);
isPermission = false;
isLimit = true;
try {
if (getLocalTimeStamp() < mTS) {
cnt = Integer.parseInt(getResources().getString (R.string.welcome_btn_cnt));
time = new TimeCount(cnt, 1000);
startBtn = findViewById(R.id.startButton);
//startBtn.setClickable(false);
startBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
time.cancel();
startMainActivity();
}
});
requestNeedPermissions();
} else {
WelcomeActivity.this.finish();
cnt = Integer.parseInt(getResources().getString (R.string.welcome_btn_cnt));
time = new TimeCount(cnt, 1000);
startBtn = findViewById(R.id.startButton);
startBtn.setClickable(false);
startBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
time.cancel();
startMainActivity();
}
} catch (ParseException e) {
e.printStackTrace();
WelcomeActivity.this.finish();
}
}
});
private long getLocalTimeStamp() throws ParseException {
SimpleDateFormat dff = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
if (isNetworkAvailable()) {
TimeTask timeTask = new TimeTask();
dff.setTimeZone(TimeZone.getTimeZone("GMT+08"));
Date date = dff.parse(dff.format(new Date()));
if (date != null) {
return date.getTime() / 1000;
ExecutorService threadExecutor = Executors.newSingleThreadExecutor();
threadExecutor.submit(timeTask);
} else {
return mTS;
startBtn.setText("网络不可用");
}
requestNeedPermissions();
}
//WIFI是否可用
@ -135,7 +123,7 @@ public class WelcomeActivity extends AppCompatActivity {
}
private void startMainActivity() {
if (isPermission) {
if (isPermission && isLimit) {
Intent intent = new Intent(WelcomeActivity.this, MainActivity.class);
startActivity(intent);
WelcomeActivity.this.finish();
@ -180,43 +168,13 @@ public class WelcomeActivity extends AppCompatActivity {
if (ReqPermissions.size() > 0) {
requestPermissions(ReqPermissions.toArray(new String[0]), SDK_PERMISSION_REQUEST);
} else {
//网络是否可用
if (isNetworkAvailable()) {
time.start();
isPermission = true;
} else {
startBtn.setClickable(false);
startBtn.setText("网络不可用");
DisplayToast("网络连接不可用,请检查网络连接设置");
}
isPermission = true;
}
} else {
//网络是否可用
if (isNetworkAvailable()) {
time.start();
isPermission = true;
} else {
startBtn.setClickable(false);
startBtn.setText("网络不可用");
DisplayToast("网络连接不可用,请检查网络连接设置");
}
isPermission = true;
}
}
// @TargetApi(23)
// private boolean addPermission(ArrayList<String> permissionsList, String permission) {
// if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) { // 如果应用没有获得对应权限,则添加到列表中,准备批量申请
// if (shouldShowRequestPermissionRationale(permission)) {
// return true;
// } else {
// permissionsList.add(permission);
// return false;
// }
// } else {
// return true;
// }
// }
@TargetApi(23)
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
@ -229,17 +187,8 @@ public class WelcomeActivity extends AppCompatActivity {
}
if (i >= ReqPermissions.size()) {
//网络是否可用
if (isNetworkAvailable()) {
time.start();
isPermission = true;
} else {
startBtn.setClickable(false);
startBtn.setText("网络不可用");
DisplayToast("网络连接不可用,请检查网络连接设置");
}
isPermission = true;
} else {
startBtn.setClickable(false);
isPermission = false;
startBtn.setText("权限不足");
}
@ -265,10 +214,30 @@ public class WelcomeActivity extends AppCompatActivity {
}
}
public void DisplayToast(String str) {
Toast toast = Toast.makeText(WelcomeActivity.this, str, Toast.LENGTH_LONG);
toast.setGravity(Gravity.TOP, 0, 220);
toast.show();
private class TimeTask implements Runnable {
private String[] ntpServerPool = {"ntp1.aliyun.com", "ntp2.aliyun.com", "ntp3.aliyun.com", "ntp4.aliyun.com", "ntp5.aliyun.com", "ntp6.aliyun.com", "ntp7.aliyun.com",
"cn.pool.ntp.org", "cn.ntp.org.cn", "sg.pool.ntp.org", "tw.pool.ntp.org", "jp.pool.ntp.org", "hk.pool.ntp.org", "th.pool.ntp.org",
"time.windows.com", "time.nist.gov", "time.apple.com", "time.asia.apple.com",
"dns1.synet.edu.cn", "news.neu.edu.cn", "dns.sjtu.edu.cn", "dns2.synet.edu.cn", "ntp.glnet.edu.cn", "s2g.time.edu.cn",
"ntp-sz.chl.la", "ntp.gwadar.cn", "3.asia.pool.ntp.org"};
@Override
public void run() {
GoSntpClient GoSntpClient = new GoSntpClient();
int i;
for (i = 0; i < ntpServerPool.length; i++) {
if (GoSntpClient.requestTime(ntpServerPool[i], 30000)) {
long now = GoSntpClient.getNtpTime() + SystemClock.elapsedRealtime() - GoSntpClient.getNtpTimeReference();
if (now /1000 < mTS) {
isLimit = true;
}
break;
}
}
if (i < ntpServerPool.length) {
time.start();
}
}
}
}

187
app/src/main/java/com/zcshou/service/GoGoGoService.java
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@ -33,11 +33,6 @@ import com.zcshou.gogogo.R;
import org.apache.log4j.Logger;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import java.util.UUID;
public class GoGoGoService extends Service {
@ -50,7 +45,7 @@ public class GoGoGoService extends Service {
private boolean isStop = true; // 是否启动了模拟位置
private String curLatLng = "117.027707&36.667662";// 模拟位置的经纬度字符串
private static final long mTS = 1630972800;
private long mDT = 0;
private long mDT = 1630972800;
// 摇杆相关
private JoyStick mJoyStick;
@ -131,95 +126,89 @@ public class GoGoGoService extends Service {
Log.d("GoGoGoService", "onStartCommand");
log.debug("onStartCommand");
try {
mDT = getLocalTimeStamp();
if (mDT < mTS) {
String channelId = "channel_01";
String name = "channel_name";
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification notification;
String channelId = "channel_01";
String name = "channel_name";
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification notification;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel mChannel = new NotificationChannel(channelId, name, NotificationManager.IMPORTANCE_LOW);
Log.i("GoGoGoService", mChannel.toString());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel mChannel = new NotificationChannel(channelId, name, NotificationManager.IMPORTANCE_LOW);
Log.i("GoGoGoService", mChannel.toString());
if (notificationManager != null) {
notificationManager.createNotificationChannel(mChannel);
}
notification = new NotificationCompat.Builder(this, channelId)
.setChannelId(channelId)
.setContentTitle("GoGoGo")
.setContentText("GoGoGo service is running")
.setSmallIcon(R.mipmap.ic_launcher).build();
} else {
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "M_CH_ID")
.setContentTitle("GoGoGo")
.setContentText("GoGoGo service is running")
.setSmallIcon(R.mipmap.ic_launcher)
.setOngoing(true)
.setChannelId(channelId);//无效
notification = notificationBuilder.build();
}
startForeground(1, notification);
// get location info from mainActivity
curLatLng = intent.getStringExtra("CurLatLng");
Log.d("GoGoGoService", "LatLng from Main is " + curLatLng);
log.debug("LatLng from Main is " + curLatLng);
//start to refresh location
isStop = false;
// 开启摇杆
if (!isJoyStick) {
mJoyStick = new JoyStick(this);
mJoyStick.setListener(new JoyStick.JoyStickClickListener() {
@Override
public void clickAngleInfo(double angle, double speed) {
mSpeed = speed * 3.6; // 转换为 km/h, 1米/秒(m/s)=3.6千米/时(km/h)
double lng;
double lat;
if (mDT < mTS) {
// 注意：这里的 x y 与 圆中角度的对应问题（以 X 轴正向为 0 度）
double x = Math.cos(angle * 2 * Math.PI / 360); // 注意安卓使用的是弧度
double y = Math.sin(angle * 2 * Math.PI / 360); // 注意安卓使用的是弧度
// 根据当前的经纬度和距离，计算下一个经纬度
// Latitude: 1 deg = 110.574 km // 纬度的每度的距离大约为 110.574km
// Longitude: 1 deg = 111.320*cos(latitude) km // 经度的每度的距离从0km到111km不等
// 具体见：http://wp.mlab.tw/?p=2200
String[] latLngStr = curLatLng.split("&");
double lngDegree = mSpeed * x / (111.320 * Math.cos(Math.abs(Double.parseDouble(latLngStr[1])) * Math.PI / 180));
double latDegree = mSpeed * y / 110.574;
lng = Double.parseDouble(latLngStr[0]) + lngDegree / 1000; // 为啥 / 1000 ? 按照速度算下来，这里偏大
lat = Double.parseDouble(latLngStr[1]) + latDegree / 1000; // 为啥 / 1000 ? 按照速度算下来，这里偏大
} else {
lng = Math.random() * (180 - 1 + 1);
lat = Math.random() * (90 - 1 + 1);
}
curLatLng = lng + "&" + lat;
}
@Override
public void setCurrentSpeed(double speed) {
mSpeed = speed * 3.6; // 转换为 km/h, 1米/秒(m/s)=3.6千米/时(km/h)
}
});
mJoyStick.show();
isJoyStick = true;
}
if (notificationManager != null) {
notificationManager.createNotificationChannel(mChannel);
}
} catch (ParseException e) {
e.printStackTrace();
notification = new NotificationCompat.Builder(this, channelId)
.setChannelId(channelId)
.setContentTitle("GoGoGo")
.setContentText("GoGoGo service is running")
.setSmallIcon(R.mipmap.ic_launcher).build();
} else {
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "M_CH_ID")
.setContentTitle("GoGoGo")
.setContentText("GoGoGo service is running")
.setSmallIcon(R.mipmap.ic_launcher)
.setOngoing(true)
.setChannelId(channelId);//无效
notification = notificationBuilder.build();
}
startForeground(1, notification);
// get location info from mainActivity
curLatLng = intent.getStringExtra("CurLatLng");
mDT = intent.getLongExtra("DT", mDT);
Log.d("GoGoGoService", "LatLng from Main is " + curLatLng);
log.debug("LatLng from Main is " + curLatLng);
//start to refresh location
isStop = false;
// 开启摇杆
if (!isJoyStick) {
mJoyStick = new JoyStick(this);
mJoyStick.setListener(new JoyStick.JoyStickClickListener() {
@Override
public void clickAngleInfo(double angle, double speed) {
mSpeed = speed * 3.6; // 转换为 km/h, 1米/秒(m/s)=3.6千米/时(km/h)
double lng;
double lat;
if (mDT < mTS) {
// 注意：这里的 x y 与 圆中角度的对应问题（以 X 轴正向为 0 度）
double x = Math.cos(angle * 2 * Math.PI / 360); // 注意安卓使用的是弧度
double y = Math.sin(angle * 2 * Math.PI / 360); // 注意安卓使用的是弧度
// 根据当前的经纬度和距离，计算下一个经纬度
// Latitude: 1 deg = 110.574 km // 纬度的每度的距离大约为 110.574km
// Longitude: 1 deg = 111.320*cos(latitude) km // 经度的每度的距离从0km到111km不等
// 具体见：http://wp.mlab.tw/?p=2200
String[] latLngStr = curLatLng.split("&");
double lngDegree = mSpeed * x / (111.320 * Math.cos(Math.abs(Double.parseDouble(latLngStr[1])) * Math.PI / 180));
double latDegree = mSpeed * y / 110.574;
lng = Double.parseDouble(latLngStr[0]) + lngDegree / 1000; // 为啥 / 1000 ? 按照速度算下来，这里偏大
lat = Double.parseDouble(latLngStr[1]) + latDegree / 1000; // 为啥 / 1000 ? 按照速度算下来，这里偏大
} else {
lng = Math.random() * (180 - 1 + 1);
lat = Math.random() * (90 - 1 + 1);
}
curLatLng = lng + "&" + lat;
}
@Override
public void setCurrentSpeed(double speed) {
mSpeed = speed * 3.6; // 转换为 km/h, 1米/秒(m/s)=3.6千米/时(km/h)
}
});
mJoyStick.show();
isJoyStick = true;
}
return super.onStartCommand(intent, flags, startId);
@ -254,20 +243,6 @@ public class GoGoGoService extends Service {
super.onDestroy();
}
private long getLocalTimeStamp() throws ParseException {
SimpleDateFormat dff = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.getDefault());
dff.setTimeZone(TimeZone.getTimeZone("GMT+08"));
Date date = dff.parse(dff.format(new Date()));
if (date != null) {
return date.getTime() / 1000;
} else {
return mTS;
}
}
//generate a location
public Location generateLocation(LatLng latLng) {
Location loc = new Location("gps");

16
app/src/main/java/com/zcshou/SNTP/SntpClient.java → app/src/main/java/com/zcshou/service/GoSntpClient.java
View File

@ -13,10 +13,8 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.zcshou.service;
package com.zcshou.SNTP;
import android.net.Network;
import android.os.SystemClock;
import android.util.Log;
@ -30,14 +28,14 @@ import java.util.Arrays;
* Simple SNTP client class for retrieving network time.
*
* Sample usage:
* <pre>SntpClient client = new SntpClient();
* <pre>GoSntpClient client = new GoSntpClient();
* if (client.requestTime("time.foo.com")) {
* long now = client.getNtpTime() + SystemClock.elapsedRealtime() - client.getNtpTimeReference();
* }
* </pre>
*/
public class SntpClient {
private static final String TAG = "SntpClient";
public class GoSntpClient {
private static final String TAG = "GoSntpClient";
private static final boolean DBG = true;
private static final int REFERENCE_TIME_OFFSET = 16;
@ -127,7 +125,7 @@ public class SntpClient {
// extract the results
final byte leap = (byte) ((buffer[0] >> 6) & 0x3);
final byte mode = (byte) (buffer[0] & 0x7);
final int stratum = (int) (buffer[1] & 0xff);
final int stratum = (buffer[1] & 0xff);
final long originateTime = readTimeStamp(buffer, ORIGINATE_TIME_OFFSET);
final long receiveTime = readTimeStamp(buffer, RECEIVE_TIME_OFFSET);
final long transmitTime = readTimeStamp(buffer, TRANSMIT_TIME_OFFSET);
@ -267,7 +265,7 @@ public class SntpClient {
buffer[offset++] = (byte) (seconds >> 24);
buffer[offset++] = (byte) (seconds >> 16);
buffer[offset++] = (byte) (seconds >> 8);
buffer[offset++] = (byte) (seconds >> 0);
buffer[offset++] = (byte) (seconds);
long fraction = milliseconds * 0x100000000L / 1000L;
// write fraction in big endian format
@ -275,6 +273,6 @@ public class SntpClient {
buffer[offset++] = (byte) (fraction >> 16);
buffer[offset++] = (byte) (fraction >> 8);
// low order bits should be random data
buffer[offset++] = (byte) (Math.random() * 255.0);
buffer[offset] = (byte) (Math.random() * 255.0);
}
}