seeing if a site is up

[Dave Milne]

a surprising omission from java, I always thought. But thinking about it
more, IIRC you need root privileges in unix to create raw packets, so that's
probably why.

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

 

[Roland]

From Java?

Yep, in Java 5.0 (aka 1.5.0) you can use InetAddress.isReachable(). This
sends ICMP ECHO requests to the address. [Most (all?) ping command
implementations use the same ICMP requests to check if the address is
reachable.]

<http://java.sun.com/j2se/1.5.0/docs/api/java/net/InetAddress.html#isReachable(int)>
--
Regards,

Roland de Ruiter
` ___ ___
`/__/ w_/ /__/
/ \ /_/ / \

 

[Dag Sunde]

From Java?

Yep, in Java 5.0 (aka 1.5.0) you can use InetAddress.isReachable(). This
sends ICMP ECHO requests to the address. [Most (all?) ping command
implementations use the same ICMP requests to check if the address is
reachable.]

<http://java.sun.com/j2se/1.5.0/docs/api/java/net/InetAddress.html#isReachable(int)>

As long as the OP is restricted to the Applet's sandbox this doesn't help
much, since it is the permission problem with cross-domain access from
an applet he is truggling with...

I presume here that Java 5.0's "InetAddress.isReachable()" will trigger
a permission denied, just as opening an URL() will...?

 

[Darren]

a surprising omission from java, I always thought. But thinking about it
more, IIRC you need root privileges in unix to create raw packets, so that's
probably why. I have root privileges

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

 

[Joan]

a surprising omission from java, I always thought. But thinking
about it
more, IIRC you need root privileges in unix to create raw
packets, so that's
probably why.

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

So tell you boss you can't do it without this privilege and make
her decide!

 

[Darren]

So tell you boss you can't do it without this privilege and make
her decide! I'm not a she.