Error check for Webservices

Can anyone tell me how to do an error check on WebServices i.e. to check if the site which has the webservices is not down and also if internet connection exists?
Thanks

Have you followed this this post recommendations ?

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Originally Posted by danasegarane

Have you followed this this post recommendations ?

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Part of it is solved i.e. if internet exists. The other part is to check whether webservice exists? Is making an http request solve the problem?