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Javascript to check the status of wireless connection


Javascript to check the status of wireless connection

By : Alan Ihsan
Date : November 25 2020, 07:27 PM
I wish this helpful for you Browser errors and system tray icons will sufficiently indicate the state of the wireless network to the user.
The way you describe your application indicates, to me, that you are doing some kind of continuous AJAX-style querying that is frequently interrupted. Rather than concentrating on underlying network connections, I recommend taking a more business-level approach: If your application cannot maintain a connection (or does not receive a response within a certain time limit), simply notify the user that a connection could not be established (for added robustness, keep retrying until it succeeds -- see, e.g. GMail's web interface). The user will have other means to diagnose why - your application should not and can not know the reason for the failure, your application only knows that it needs to connect to the server and can't. (As a bonus, handling errors in this way could give you the basis for a framework for handling other server-side errors as well, e.g. displaying a message if data services are down for maintenance, etc.)
code :


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Detecting Wireless computers which have not established any connection to a Wireless Network

Detecting Wireless computers which have not established any connection to a Wireless Network


By : user2708666
Date : March 29 2020, 07:55 AM
hop of those help? Depending upon the operating system and NIC drivers that you're using, you can set the 802.11 NIC to Promiscuous Mode and Monitor Mode in order to capture all packets on a given channel.
At least under Linux, this functionality is supposed by most drivers in conjunction with LibPCap; although Windows is another matter altogether (you'd have to use a version of Windows featuring NDIS6 - i.e. Windows Vista or Windows 7, and an external packet capturing API such as the one provided by the Microsoft Network Monitor SDK).
urllib2/pycurl in Django: Fetch XML, check HTTP status, check HTTPS connection

urllib2/pycurl in Django: Fetch XML, check HTTP status, check HTTPS connection


By : user3887749
Date : March 29 2020, 07:55 AM
around this issue Using M2Crypto:
code :
from M2Crypto import SSL
ctx = SSL.Context('sslv3')
ctx.set_verify(SSL.verify_peer | SSL.verify_fail_if_no_peer_cert, depth=9)
if ctx.load_verify_locations('ca.pem') != 1:
   raise Exception('No CA certs')

c = SSL.Connection(ctx)
c.connect(('www.google.com', 443)) # automatically checks cert matches host
c.send('GET / \n')
c.close()
import urllib2, urllib2_ssl

opener = urllib2.build_opener(urllib2_ssl.HTTPSHandler(ca_certs='ca.pem'))
xml = opener.open('https://example.com/').read()
c = pycurl.Curl()
c.setopt(pycurl.URL, "https://example.com?param1=val1&param2=val2")
c.setopt(pycurl.HTTPGET, 1)
c.setopt(pycurl.CAINFO, 'ca.pem')
c.setopt(pycurl.SSL_VERIFYPEER, 1)
c.setopt(pycurl.SSL_VERIFYHOST, 2)
c.setopt(pycurl.SSLVERSION,     3)    
c.setopt(pycurl.NOBODY, 1)
c.setopt(pycurl.NOSIGNAL, 1)
c.perform()
c.close()
How to check the connection status in java using jdbc connection?

How to check the connection status in java using jdbc connection?


By : anuja sharma
Date : March 29 2020, 07:55 AM
Does that help The location where you are calling getConnection, provide custom message there by handling exception:
code :
Connection con = null;
try {
     con = DatabaseUtil.getConnection();
    ...
    ...
}catch(Exception e) {
   //show message, dialog box, whatever
} finally {
   if(con != null) {
         try{
            con.close();
         }catch(SQLException sqe){
              //yet another message, unable to close connection cleanly.
         }
   }
}
Any way to determine wireless connection or cable connection via PHP or Javascript?

Any way to determine wireless connection or cable connection via PHP or Javascript?


By : Winnie Lim
Date : March 29 2020, 07:55 AM
Any of those help On the website, I want to know if the visitor is using wireless or cable connection. Any way to do that?
code :
<form action="conType.php">
I am visiting via  ...<br />
<input type="radio" name="conType" value="wireless" /> Wireless<br />
<input type="radio" name="conType" value="cable" /> Cable
<input type="submit" />
</form>
Android Check for Wireless connection upon Returning to Activity from Settings

Android Check for Wireless connection upon Returning to Activity from Settings


By : Brandon
Date : March 29 2020, 07:55 AM
will be helpful for those in need I played with it for a while and used a few other examples to piece together something that is working. One small hitch is if the user turns on a connection, but it is not quite connected when they return to the app it will stay on the ConnectorActivity. So I intercept the back button to check for a connection. If present, it will finish the current activity. Then, upon returning to the webview it will reload.
ConnectorActivity.java:
code :
@Override
    protected void onRestart(){
        super.onRestart();
        if(checkConnection()){
            finish();
        }
    }

    @Override
    // Detect when the back button is pressed
    public void onBackPressed() {
        if(checkConnection()){
            super.onBackPressed();
        }

    }
@Override
protected void onRestart(){
    super.onRestart();
    mWebView.reload();

}
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