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@@ -0,0 +1,306 @@
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+package com.wdkl.ncs.android.component.home.util;
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+
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+import android.util.Log;
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+
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+import java.io.BufferedReader;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.io.InputStreamReader;
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+import java.net.URI;
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+import java.util.regex.Pattern;
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+
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+public class PingUtil {
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+
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+ //ip地址正则表达式
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+ private static final String ipRegex =
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+ "((?:(?:25[0-5]|2[0-4]\\d|((1\\d{2})|([1-9]?\\d)))\\.){3}(?:25[0-5]|2[0-4]\\d|((1\\d{2})|([1-9]?\\d))))";
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+
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+ //默认超时时间
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+ private static final int TIME_OUT = 100;
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+ //默认ping的次数
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+ private static final int DEFAULT_COUNT = 5;
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+
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+ //最小RTT
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+ public static final int TYPE_MIN = 1;
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+ //平均RTT
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+ public static final int TYPE_AVG = 2;
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+ //最大RTT
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+ public static final int TYPE_MAX = 3;
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+ //RTT偏差
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+ public static final int TYPE_MDEV = 4;
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+
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+ //网络ping的结果
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+ public static final String RESULT_BAD = "bad";
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+ public static final String RESULT_NORMAL = "normal";
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+ public static final String RESULT_GOOD = "good";
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+
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+ private static PingCallback pingCallback;
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+
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+ /**
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+ * 解析数据，延迟小于50为good，延迟在50~100之间或者丢包率为0为normal，
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+ * 延迟在100以上或者返回失败或丢包率大于0，则返回bad
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+ *
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+ * @param url ping的地址
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+ * @return
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+ */
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+ public static String parseRTT(String url) {
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+ int pingRtt = getRTT(url);
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+ float pingLostRate = getPacketLossFloat(url);
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+ if (pingCallback != null) {
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+ pingCallback.onPingResult(pingRtt, pingLostRate);
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+ }
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+
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+ if (pingRtt > 0 && pingRtt < 50) {
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+ return RESULT_GOOD;
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+ } else if ((pingRtt <= 100 && pingRtt > 50) || pingLostRate == 0) {
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+ return RESULT_NORMAL;
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+ } else if (pingRtt > 100 || pingRtt < 0 || pingLostRate > 0) {
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+ return RESULT_BAD;
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+ }
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+ return RESULT_BAD;
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+ }
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+
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+ /**
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+ * 解析数据，延迟小于50为good，延迟在50~100之间或者丢包率为0为normal，
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+ * 延迟在100以上或者返回失败或丢包率大于0，则返回bad
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+ *
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+ * @param url ping的地址
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+ * @param type ping的类型
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+ * @param count ping的次数
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+ * @param timeout ping的超时时间
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+ * @return
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+ */
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+ public static String parseRTT(String url, int type, int count, int timeout) {
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+ int pingRtt = getRTT(url, type, count, timeout);
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+ float pingLostRate = getPacketLossFloat(url, count, timeout);
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+ if (pingRtt > 0 && pingRtt < 50) {
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+ return RESULT_GOOD;
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+ } else if ((pingRtt <= 100 && pingRtt > 50) || pingLostRate == 0) {
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+ return RESULT_NORMAL;
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+ } else if (pingRtt > 100 || pingRtt < 0 || pingLostRate > 0) {
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+ return RESULT_BAD;
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+ }
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+ return RESULT_BAD;
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+ }
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+
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+ /**
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+ * 获取pingPTT值，默认为平均RTT
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+ *
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+ * @param url 需要ping的url地址
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+ * @return RTT值，单位 ms 注意：-1是默认值，返回-1表示获取失败
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+ */
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+ public static int getRTT(String url) {
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+ return getRTT(url, TYPE_AVG);
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+ }
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+
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+ /**
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+ * 获取ping的RTT值
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+ *
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+ * @param url 需要ping的url地址
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+ * @param type ping的类型
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+ * @return RTT值，单位 ms 注意：-1是默认值，返回-1表示获取失败
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+ */
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+ public static int getRTT(String url, int type) {
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+ return getRTT(url, type, DEFAULT_COUNT, TIME_OUT);
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+ }
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+
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+ /**
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+ * 获取ping url的RTT
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+ *
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+ * @param url 需要ping的url地址
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+ * @param type ping的类型
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+ * @param count 需要ping的次数
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+ * @param timeout 需要ping的超时时间，单位 ms
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+ * @return RTT值，单位 ms 注意：-1是默认值，返回-1表示获取失败
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+ */
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+ public static int getRTT(String url, int type, int count, int timeout) {
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+ String domain = getDomain(url);
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+ if(null == domain){
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+ return -1;
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+ }
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+ String pingString = ping(createSimplePingCommand(count, timeout, domain));
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+ Log.d("ping", pingString);
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+ if (pingCallback != null) {
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+ pingCallback.onPingInfo(pingString);
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+ }
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+ if (null != pingString) {
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+ try {
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+ //获取以"min/avg/max/mdev"为头的文本，分别获取此次的ping参数
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+ String tempInfo = pingString.substring(pingString.indexOf("min/avg/max/mdev") + 19);
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+ String[] temps = tempInfo.split("/");
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+ switch (type) {
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+ case TYPE_MIN: {
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+ return Math.round(Float.parseFloat(temps[0]));
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+ }
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+ case TYPE_AVG: {
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+ return Math.round(Float.parseFloat(temps[1]));
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+ }
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+ case TYPE_MAX: {
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+ return Math.round(Float.parseFloat(temps[2]));
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+ }
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+ case TYPE_MDEV: {
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+ return Math.round(Float.parseFloat(temps[3]));
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+ }
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+ default: {
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+ return -1;
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+ }
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+ }
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ return -1;
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+ }
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+
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+ /**
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+ * 获取ping url的丢包率，浮点型
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+ *
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+ * @param url 需要ping的url地址
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+ * @return 丢包率 如50%可得 50，注意：-1是默认值，返回-1表示获取失败
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+ */
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+ public static float getPacketLossFloat(String url) {
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+ String packetLossInfo = getPacketLoss(url);
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+ if (null != packetLossInfo) {
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+ try {
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+ return Float.parseFloat(packetLossInfo.replace("%", ""));
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ return -1;
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+ }
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+
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+ /**
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+ * 获取ping url的丢包率，浮点型
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+ *
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+ * @param url 需要ping的url地址
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+ * @param count 需要ping的次数
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+ * @param timeout 需要ping的超时时间，单位 ms
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+ * @return 丢包率 如50%可得 50，注意：-1是默认值，返回-1表示获取失败
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+ */
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+ public static float getPacketLossFloat(String url, int count, int timeout) {
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+ String packetLossInfo = getPacketLoss(url, count, timeout);
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+ if (null != packetLossInfo) {
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+ try {
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+ return Float.parseFloat(packetLossInfo.replace("%", ""));
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ return -1;
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+ }
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+
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+ /**
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+ * 获取ping url的丢包率
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+ *
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+ * @param url 需要ping的url地址
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+ * @return 丢包率 x%
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+ */
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+ public static String getPacketLoss(String url) {
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+ return getPacketLoss(url, DEFAULT_COUNT, TIME_OUT);
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+ }
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+
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+ /**
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+ * 获取ping url的丢包率
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+ *
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+ * @param url 需要ping的url地址
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+ * @param count 需要ping的次数
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+ * @param timeout 需要ping的超时时间，单位ms
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+ * @return 丢包率 x%
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+ */
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+ public static String getPacketLoss(String url, int count, int timeout) {
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+ String domain = getDomain(url);
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+ if (null == domain) {
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+ return null;
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+ }
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+ String pingString = ping(createSimplePingCommand(count, timeout, domain));
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+ if (null != pingString) {
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+ try {
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+ String tempInfo = pingString.substring(pingString.indexOf("received,"));
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+ return tempInfo.substring(9, tempInfo.indexOf("packet"));
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ return null;
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+ }
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+
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+
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+ // ********************以下是一些辅助方法，设为private********************//
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+
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+ /**
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+ * 域名获取
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+ *
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+ * @param url 网址
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+ * @return
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+ */
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+ private static String getDomain(String url) {
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+ String domain = null;
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+ try {
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+ domain = URI.create(url).getHost();
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+ if (null == domain && isMatch(ipRegex,url)) {
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+ domain = url;
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+ }
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ return domain;
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+ }
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+
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+ private static boolean isMatch(String regex, String string) {
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+ return Pattern.matches(regex, string);
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+ }
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+
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+ /**
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+ * ping方法，调用ping指令
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+ *
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+ * @param command ping指令文本
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+ * @return
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+ */
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+ private static String ping(String command) {
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+ Process process = null;
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+ try {
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+ process = Runtime.getRuntime().exec(command); //执行ping指令
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+ InputStream is = process.getInputStream();
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+ BufferedReader reader = new BufferedReader(new InputStreamReader(is));
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+ StringBuilder sb = new StringBuilder();
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+ String line;
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+ while (null != (line = reader.readLine())) {
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+ sb.append(line);
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+ sb.append("\n");
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+ }
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+ reader.close();
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+ is.close();
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+ return sb.toString();
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ } finally {
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+ if (null != process) {
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+ process.destroy();
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+ }
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+ }
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+ return null;
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+ }
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+
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+ /**
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+ * ping指令格式文本
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+ *
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+ * @param count 调用次数
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+ * @param timeout 超时时间
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+ * @param domain 地址
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+ * @return
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+ */
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+ private static String createSimplePingCommand(int count, int timeout, String domain) {
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+ return "/system/bin/ping -c " + count + " -w " + timeout + " " + domain;
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+ }
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+
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+ public static void setCallback(PingCallback callback) {
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+ pingCallback = callback;
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+ }
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+
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+ public interface PingCallback {
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+ void onPingInfo(String info);
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+ void onPingResult(int rtt, float lostRate);
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+ }
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+}
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+
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weizhengliang