How to determine the effectiveness of

http://192.168.1.4/updata/ Fellow teachers , I am a novice how to detect http://192.168.1.4/updata/ through Socket URL is valid

thank
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with httpwebrequest send a get request , if the return 2xx status code , it means access to normal.
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refer:
http://www.cnblogs.com/insus/archive/2013 / 05/03/3057029.html
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thank the teacher's guidance, learning .