Android 使用iperf测试wifi吞吐量

Android使用iperf测试wifi吞吐量

大体上分为三个步骤

1. 编译生成android端的可执行文件iperf
2. 把该文件拷贝到/data/data/包名/iperf目录下
3. 根据iperf命令执行该文件

第一部分，在android下编译生成iperf文件

1.获取需要编译的源代码：https://osdn.net/projects/sfnet_iperf/downloads/iperf-2.0.5.tar.gz/

2.将下载来的文件解压后放置到android/external目录下

3.在该android/external/iperf-2.0.5目录下创建Android.mk文件

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS) 
LOCAL_SRC_FILES := compat/Thread.c \compat/error.c \compat/delay.cpp \compat/gettimeofday.c \compat/inet_ntop.c \compat/inet_pton.c \compat/signal.c \compat/snprintf.c \compat/string.c \src/Client.cpp \src/Extractor.c \src/Launch.cpp \src/List.cpp \src/Listener.cpp \src/Locale.c \src/PerfSocket.cpp \src/ReportCSV.c \src/ReportDefault.c \src/Reporter.c \src/Server.cpp \src/Settings.cpp \src/SocketAddr.c \src/main.cpp \src/sockets.c \src/stdio.c \src/tcp_window_size.c \src/gnu_getopt.c \src/gnu_getopt_long.c \src/service.c
LOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/include
LOCAL_CFLAGS += -O2 
LOCAL_CFLAGS += -DHAVE_CONFIG_H
LOCAL_SHARED_LIBRARIES := libc libm libcutils libnetutils 
LOCAL_MODULE := iperf
LOCAL_MODULE_TAGS := debug
include $(BUILD_EXECUTABLE) 

4.4.生成需要的头文件

./configure --host=arm 

5.修改源码的头文件：

1. 把 compact/signal.c 里面的 #include "util.h"
改成 #include "../include/util.h"2. 把 src/sockets.c 里面的 #include "util.h"
改成 #include "../include/util.h"

6.在android目录下编译生成iperf

$source build/envsetup.sh
$mmm external/iperf-2.0.5

7.会在out里面目录下生成一个iperf文件，这个文件就是要拷贝到/data/data…目录的文件

第二部分，copy iperf

 /*** 1. 拷贝iperf到该目录下*/
private static final String IPERF_PATH = "/data/data/com.android.wifiiperf/iperf";public void copyiperf() {File localfile;Process p;try {localfile = new File(IPERF_PATH);p = Runtime.getRuntime().exec("chmod 777 " + localfile.getAbsolutePath());InputStream localInputStream = getAssets().open("iperf");Log.i(TAG,"chmod 777 " + localfile.getAbsolutePath());FileOutputStream localFileOutputStream = new FileOutputStream(localfile.getAbsolutePath());FileChannel fc = localFileOutputStream.getChannel();FileLock lock = fc.tryLock(); //给文件设置独占锁定if (lock == null) {Toast.makeText(this,"has been locked !",Toast.LENGTH_SHORT).show();return;} else {FileOutputStream fos = new FileOutputStream(new File(IPERF_PATH));byte[] buffer = new byte[1024];int byteCount = 0;while ((byteCount = localInputStream.read(buffer)) != -1) {// 循环从输入流读取// buffer字节fos.write(buffer, 0, byteCount);// 将读取的输入流写入到输出流Log.i(TAG, "byteCount: "+byteCount);}fos.flush();// 刷新缓冲区localInputStream.close();fos.close();}//两次才能确保开启权限成功p = Runtime.getRuntime().exec("chmod 777 " + localfile.getAbsolutePath());lock.release();p.destroy();Log.i(TAG, "the iperf file is ready");} catch (Exception e) {e.printStackTrace();}
}

第三部分，执行iperf文件，其中CommandResult、CommandHelper和iperf文件在GitHub里面了。

/*** 2. 在Android应用中执行iperf命令*/
private void sercomfun(final String cmd) {Log.i(TAG, "sercomfun = " + cmd);Thread lthread = new Thread(new Runnable() {@Overridepublic void run() {try {String errorreply = "";CommandHelper.DEFAULT_TIMEOUT = 150000;CommandResult result = CommandHelper.exec(cmd);if (result != null) {//start to connect the serviceif (result.getError() != null) {errorreply = result.getError();Message m = new Message();m.obj = errorreply;m.what = IPERF_ERROR;handler.sendMessage(m);Log.i(TAG,"Error:" + errorreply);}if (result.getOutput() != null) {iperfreply = getThroughput(result.getOutput());IPERF_OK = true;Message m = new Message();m.obj = iperfreply;m.what = IPERF_SCCESS;handler.sendMessage(m);Log.i(TAG,"Output:" + iperfreply);}Log.i(TAG,"result.getExitValue(): "+result.getExitValue());}} catch (Exception e) {e.printStackTrace();}}});lthread.start();
}

GitHub项目地址（包括wifi地址，信号），https://github.com/xhunmon/wifiIperf

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