Java 如何使用socket编程测量Android中的数据包丢失?
我正在为android开发一个应用程序,在那里我需要从服务器进行通信,我在socket编程的帮助下做到了这一点,现在我需要在我的连接中查找数据包丢失,那么是否有API或任何方法可以在socket编程中查找数据包丢失 我将我的代码片段附加到客户端从服务器接收消息的位置Java 如何使用socket编程测量Android中的数据包丢失?,java,android,sockets,network-programming,Java,Android,Sockets,Network Programming,我正在为android开发一个应用程序,在那里我需要从服务器进行通信,我在socket编程的帮助下做到了这一点,现在我需要在我的连接中查找数据包丢失,那么是否有API或任何方法可以在socket编程中查找数据包丢失 我将我的代码片段附加到客户端从服务器接收消息的位置 try { socket = new Socket(dstAddress, dstPort); dataOutputStream = new DataOutputStream(
try {
socket = new Socket(dstAddress, dstPort);
dataOutputStream = new DataOutputStream(
socket.getOutputStream());
dataInputStream = new DataInputStream(socket.getInputStream());
dataOutputStream.writeUTF(name);
dataOutputStream.flush();
String myArray = "";
int i=0;
while (!goOut) {
flag=0;
if (dataInputStream.available() > 0) {
msgLog += dataInputStream.readUTF();
flag=1;
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
chatMsg.setText(msgLog);
}
});
Log.d("DERE", msgLog);
myArray=msgLog+"";
Log.v("ARE", myArray);
}
//Log.v("ARE", myArray[0]);
if(flag==1)
received(myArray);
if(!msgToSend.equals("")){
dataOutputStream.writeUTF(msgToSend);
dataOutputStream.flush();
msgToSend = "";
}
}
//Looper.loop();
} catch (UnknownHostException e) {
e.printStackTrace();
final String eString = e.toString();
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, eString, Toast.LENGTH_LONG).show();
}
});
您可以检查此代码
String lost = new String();
String delay = new String();
Process p = Runtime.getRuntime().exec("ping -c 4 " + "119.147.15.13");
BufferedReader buf = new BufferedReader(new InputStreamReader(p.getInputStream()));
String str = new String();
while((str=buf.readLine())!=null){
if(str.contains("packet loss")){
int i= str.indexOf("received");
int j= str.indexOf("%");
System.out.println(":"+str.substring(i+10, j+1));
// System.out.println(":"+str.substring(j-3, j+1));
lost = str.substring(i+10, j+1);
}
if(str.contains("avg")){
int i=str.indexOf("/", 20);
int j=str.indexOf(".", i);
System.out.println(":"+str.substring(i+1, j));
delay =str.substring(i+1, j);
delay = delay+"ms";
}
}
来源:检查下面的代码
public void ping()
{
String result = null;
int pingCount=5;
String[] rttPacket = new String[3];
String[] packetLoss= new String[1];
try {
// url = "192.168.4.31";
String pingCmd = "ping -c " + pingCount + " " + url;// url;//
String pingResult = "";
Runtime r = Runtime.getRuntime();
Process p = r.exec(pingCmd);
BufferedReader in = new BufferedReader(new InputStreamReader(
p.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
pingResult += inputLine;
}
in.close();
ProcessSyncResponse(pingResult, url);
}
} public String ProcessSyncResponse(String pingResult, String url) {
String pingdataResult = null;
try {
int index2 = pingResult.indexOf("% packet loss");
int index1 = pingResult.indexOf("rtt min/avg/max/mdev =");
if (index1 > 0) {
String parsedTime = (pingResult.substring(index1 + 23));
rttPacket = parsedTime.split("/");
} else {
rttPacket[0] = "0";
rttPacket[1] = "0";
rttPacket[2] = "0";
}
if (index2 > 0) {
String parsedPacket = "";
int finalIndex = index2 + -3;
String parsedintitalIndex = pingResult.substring(finalIndex,
index2);
parsedintitalIndex = parsedintitalIndex.replaceAll(
"(,)|(,,)|( )", "");
parsedPacket += parsedintitalIndex;
parsedPacket += (pingResult.substring(index2));
packetLoss = parsedPacket.split("%");
} else {
packetLoss[0] = "0";
}
} catch (Exception e) {
e.printStackTrace();
}
}
log.v(TAG," Packet Loss in %" +packetLoss[0]]);
log.v(TAG," Packet Loss AVG" +rttPacket[0]]);
log.v(TAG," Packet Loss Min" +rttPacket[1]]);
log.v(TAG," Packet Loss Max" +rttPacket[2]]);
很高兴它能为您工作。Socket类通过TCP协议提供安全可靠的通信。因此,您不需要在传输级别检查数据包丢失。如果您想在应用程序级别检查服务器响应,您可以为每个请求设置唯一的标识符,以便跟踪服务器响应。感谢帮助,您知道我们可以在不执行ping命令的情况下测量数据包丢失吗?实际上,我不知道如何在不执行ping的情况下测量数据包丢失。但是似乎ping是最好的方法。感谢4的帮助,它确实对我有很大帮助,我对在不使用ping命令的情况下查找数据包丢失感兴趣,所以如果你知道任何方法,请帮助我。你可以使用ipconfig/ping来做这件事。除此之外,我不知道。这可以帮助你