##1.This code is compiling under android source environment defaultly ##2.Testing

  adb shell mkdir /data/webif
  adb push webif/ /data/webif   // push the html stuffs into android device
  adb push out/target/product/xxxx/system/bin/webif system/bin/  //push the webif binary into android device
  adb shell webif  // run the webif 

##3.Open a web browser, and type in

  http://<android device ip>/webif/index.html  

##4.Here is the demo, click the button, a request will send to webif server in the android device, and the reply from webif will be alerted