How to check internet connection is available behind proxy?

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I want to know whether the system has internet behind proxy?

What I have tried:

My.Computer.Network.Ping("www.google.com")

It works well when proxy is not enabled.

If proxy settings is enabled it will always return false (when internet is available or not)

Posted 24-Feb-20 18:42pm

kgmmurugesh

Updated 24-Feb-20 23:33pm

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phil.o · Accepted Answer · 2020-02-24T19:06:00

Solution 1

If you want to know whether http protocol is accessible, then test for a web request instead of a ping request. Ping is a distinct protocol from http and is often blocked by proxies.
Check Internet Connection vb.net - Stack Overflow[^]

Posted 24-Feb-20 19:06pm

phil.o

Comments

kgmmurugesh 25-Feb-20 5:29am

web request takes 20 seconds when internet is not available.

phil.o 25-Feb-20 6:27am

Probably; because absence of service is only qualified after the request has reached its timeout.

kgmmurugesh 25-Feb-20 6:30am

Ok. is there any way to check quickly?

phil.o 25-Feb-20 6:41am

You could try to lower the timeout (I don't know how), but then you face an increased risk of false positives.

kgmmurugesh 25-Feb-20 6:42am

Ok.