Http Server

I have made an application which send data on uart which is received form ethernet and vice-versa.Also have made GUI in http server by using it i can set UART baudrate,parity,stopbit and can change the ip address too.
But after some days http pages are not responding but application which send data on bidirection is working ok.
I am using LPC1764 + TLK105 .
Let me guide on this issue.

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