我的想法是客戶端發10M的string給服務器,服務器把收到的數據返回給客戶端,

客戶端記下發送的時刻和收完數據的時刻,兩者相減再除2就是傳輸用的時間.

發1M沒有問題,現在要發10M,就循環10次,結果服務器和客戶端都陷入了循環,

不知問題出在哪,請大家指點,謝謝!

客戶端程序如下

import java.io.*;

import javax.net.ssl.SSLSocket;

import javax.net.ssl.SSLSocketFactory;

public

class EchoClient

{

public static void main(String [] args)

{

String str="0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789",sendstr=null;

for(int i=0;i<10;i++)

sendstr+=str;

sendstr+="12345678123456781234";

String realsendstr=null;

for(int k=0;k<1000;k++)

realsendstr+=sendstr;

try

{

System.setProperty("javax.net.ssl.trustStore","clienttrust");

SSLSocketFactory sslsocketfactory = (SSLSocketFactory)SSLSocketFactory.getDefault();

SSLSocket sslsocket = (SSLSocket)sslsocketfactory.createSocket("localhost", 9999);

InputStream ins= sslsocket.getInputStream();

InputStreamReader inputstreamreader = new InputStreamReader(ins);

BufferedReader bufferedreader = new BufferedReader(inputstreamreader);

OutputStream outs=sslsocket.getOutputStream();

PrintStream ps=new PrintStream(outs);

OutputStreamWriter outputstreamwriter = new OutputStreamWriter(outs);

BufferedWriter bufferedwriter = new BufferedWriter(outputstreamwriter);

String recvstr=null;

int len=0;

System.out.println("the size of sendstr is "+realsendstr.length());

long sendtime = System. currentTimeMillis();

for(int m=0;m<10;m++)

ps.println(realsendstr);

ps.println("");

while((recvstr=bufferedreader.readLine())!=null) {

len+=recvstr.length();

if(recvstr.equals("")) break;

}

long recvtime = System. currentTimeMillis();

long costtime= recvtime-sendtime;

System.out.println("the delay is "+costtime+" ms");

System.out.println("recv len:"+len);//+" data:["+new String(buff,0,len)+"]");

double f=len*2*1000/(costtime*1024);

System.out.print("the speed is ");

System.out.print(f);

System.out.println(" K/s");

ps.close();

bufferedwriter.close();

bufferedreader.close();

}

catch (Exception exception)

{

exception.printStackTrace();

}

}

}

服務器端如下:

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.BufferedReader;

import java.io.*;

import javax.net.ssl.SSLSocket;

import javax.net.ssl.SSLServerSocket;

import javax.net.ssl.SSLServerSocketFactory;

public

class EchoServer

{

public static void main(String [] arstring)

{

try

{

SSLServerSocketFactory sslserversocketfactory =

(SSLServerSocketFactory)SSLServerSocketFactory.getDefault();

SSLServerSocket sslserversocket =

(SSLServerSocket)sslserversocketfactory.createServerSocket(9999);

while(true) {

SSLSocket sslsocket = (SSLSocket) sslserversocket.accept();

InputStream inputstream = sslsocket.getInputStream();

InputStreamReader inputstreamreader = new InputStreamReader(inputstream);

BufferedReader bufferedreader = new BufferedReader(inputstreamreader);

OutputStream outs=sslsocket.getOutputStream();

PrintStream ps=new PrintStream(outs);

OutputStreamWriter outputstreamwriter = new OutputStreamWriter(outs);

BufferedWriter bufferedwriter = new BufferedWriter(outputstreamwriter);

String str=null;

while((str=bufferedreader.readLine())!=null) {

ps.println(str);

if(str.equals("")) break;

}

System.out.println("recv and send over");

bufferedwriter.close();

bufferedreader.close();

sslsocket.close();

}

}

catch (Exception exception)

{

exception.printStackTrace();

}

}

}

總結

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