Sockets, Javascript and Java

[j_macaroni]

I know Javascript has no methods to directly open sockets.

Since that is not possible, I was wondering if anyone knows of a Java
applet
somewhere that does this that can can be instantiated in Javascript.
This would
be running on a Windows client under IE or Firefox.

Thanks

 

[IchBin]

I know Javascript has no methods to directly open sockets.

Since that is not possible, I was wondering if anyone knows of a Java
applet
somewhere that does this that can can be instantiated in Javascript.
This would
be running on a Windows client under IE or Firefox.

Thanks

I think you could use PHP to open a socket. Thia would be a better
approach to the problem.

function socket_raw_connect ($server, $port, $timeout,$request)
{
if (!is_numeric($port) or !is_numeric($timeout)) {return false;}
$socket = fsockopen($server, $port, $errno, $errstr, $timeout);
fputs($socket, $request);
$ret = '';
while (!feof($socket))
{
$ret .= fgets($socket, 4096);
}
return $ret;
fclose($socket);
}


Thanks in Advance...
IchBin, Pocono Lake, Pa, USA
http://weconsultants.servebeer.com/JHackerAppManager
__________________________________________________________________________

'If there is one, Knowledge is the "Fountain of Youth"'
-William E. Taylor, Regular Guy (1952-)

 

[j_macaroni]

Problem with this approach is that PHP would have to be started via an
HTTP request.

This means a PHP page would be on the server. However since this is
using HTTP and requests/response are not persistent where you can have
a two way <send><receive> without closing and reopening the socket.

Java seems to be the best choice that can communicate with the browser
without having to install anything on the user's computer.

Thanks

 

[Paul Hamaker]

You could code an applet to connect to the originating host using
sockets, but if you want it to connect elsewhere on the net, it will
have to be signed and the user will have to consent.

 

[j_macaroni]

That's ok, since the connection would be on the originating host. Would
you know where I can source code that implements socket communications.

 

[IchBin]

That's ok, since the connection would be on the originating host. Would
you know where I can source code that implements socket communications.

You could code an applet to connect to the originating host using
sockets, but if you want it to connect elsewhere on the net, it will
have to be signed and the user will have to consent.

Generally Here:
http://java.sun.com/docs/books/tutorial/networking/index.html

Specifically here:
http://java.sun.com/docs/books/tutorial/networking/sockets/index.html

Some samples to get going:

Thanks in Advance...
IchBin, Pocono Lake, Pa, USA
http://weconsultants.servebeer.com/JHackerAppManager
__________________________________________________________________________

'If there is one, Knowledge is the "Fountain of Youth"'
-William E. Taylor, Regular Guy (1952-)

 

[IchBin]

That's ok, since the connection would be on the originating host. Would
you know where I can source code that implements socket communications.

You could code an applet to connect to the originating host using
sockets, but if you want it to connect elsewhere on the net, it will
have to be signed and the user will have to consent.

Generally Here:
http://java.sun.com/docs/books/tutorial/networking/index.html

Specifically here:
http://java.sun.com/docs/books/tutorial/networking/sockets/index.html

Some samples to get going:
http://javaalmanac.com/egs/java.net/CreateClientSocket.html

Thanks in Advance...
IchBin, Pocono Lake, Pa, USA
http://weconsultants.servebeer.com/JHackerAppManager
__________________________________________________________________________

'If there is one, Knowledge is the "Fountain of Youth"'
-William E. Taylor, Regular Guy (1952-)

 

[sgware]

You can achieve "real" sockets in JavaScript by including an invisible Java applet or Flash movie that interfaces with JS.

I chose to use Java because handling <policy-file-request/> queries in Flash is a pain, and sometimes impossible if you're trying to connect to a domain other than the one on which you are hosting the movie.

Here is the tool I created. Hope it helps!
stephengware.com/proj/javasocketbridge