Esp8266 server unreachable. Port doesn't open I have followed all the instructions provided on  http://allaboutee.com/2015/01/20/esp8266-android-application-for-arduino-pin-control/

I have got the correct setup, I have got the message "Server Ready" in the serial monitor, i have an app similar to this, means the only thing i have done different from the web page is removing two buttons from the app. 

But then also whenever i use my app to send request parameters to arduino it says "connection to 192.168.x.x:xx refused" , when i put the same ip and port in chrome, it says Server not reachable, the website may be down, What to do ? , Please help...
The ESP module is not that difficult to work with, if you send the correct parameters to it AND you have the correct power it should work as expected. 

My main suspicions will be cabling (just triple check that connections are as expected) and power source (the ESP is VERY power hungry, if you are powering the ESP from the Arduino that is your problem, you need a very good and stable power for the ESP to work (it might show up on your network but will not have enough power to actually send anything and it will disconnect (that will still show up on your router, it depends on how fast it connects/disconnects but won't be able to send anything).

This link can provide some good information about this subject:

http://bbs.espressif.com/viewtopic.php?t=133