Android Code Snippet Testing for working Internet connnection

Discussion in 'Code Snippets' started by Derek Johnson, Oct 6, 2019.

  1. Derek Johnson

    Derek Johnson Active Member Licensed User

    Some time ago I published a code snippet for testing for a working Internet connection. A user ( ) recently pointed an error case that I had not encountered and I'd like to republish the resulting updated code snippet.

    Sub IsOnline As Boolean
    'Requires Phone Library
        Dim p As Phone
    Dim Response, Error As StringBuilder
    'Ping Google DNS - if you can't reach this you are in serious trouble (or in China)!
            p.Shell("ping -q -c 1 -W 2",Null,Response,Error)
    If Error.ToString="" Then
    If Response.ToString.Contains("100% packet loss"Then
    Log("Ping ran but no response " &  Response.ToString)
    Return False
    End If
    Return True
    Return False
    End If
    Log("Error pinging Google DNS: "  & Error.ToString)
    Return False
    End Try

    End Sub
    The missing use case was where the ping started but it returned no packets. (Usually you get an error string)
    Unobtainius and BillMeyer like this.
  2. Erel

    Erel Administrator Staff Member Licensed User

    I recommend you to use ShellAsync instead of Shell. Otherwise your app can be frozen and might be killed.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice