----- Original Message -----
From: "Darrell DeBoer" <[EMAIL PROTECTED]>
> I'm thinking of a SocketManager/ConnectionManager implementation that
returns
> a logging socket, so that the logging code doesn't need to be in the
actual
> protocol server at all.
This may help
Ability to log input or output stream data.
--------------------
public static InputStream createSnoopStream(final InputStream inp,
final OutputStream snoop) {
return new FilterInputStream(inp) {
public int read() throws IOException {
int d = super.read();
if ( d != -1 )
snoop.write(d);
return d;
}
public int read(byte[] ba,int offset,int count)
throws IOException
{
count = super.read(ba,offset,count);
if ( count != -1 )
snoop.write(ba,offset,count);
return count;
}
public void close() throws IOException {
super.close();
snoop.close();
}
};
}
public static OutputStream createSnoopStream(final OutputStream out,
final OutputStream snoop) {
return new FilterOutputStream(out) {
public void write(int b) throws IOException {
super.write(b);
snoop.write(b);
}
public void flush() throws IOException {
super.flush();
snoop.flush();
}
public void close() throws IOException {
super.close();
snoop.close();
}
};
}
--------------------
JDK 1.3 code to create a create a logging socket
---------------------
public static Socket createSnoopSocket
(Socket sock,final OutputStream inpSnoop,final OutputStream
outSnoop)
throws SocketException
{
SocketImpl impl = getImpl(sock);
return new Socket(impl) {
public InputStream getInputStream() throws IOException {
return
createSnoopStream(super.getInputStream(),inpSnoop);
}
public OutputStream getOutputStream() throws IOException {
return
createSnoopStream(super.getOutputStream(),outSnoop);
}
};
}
// this breaks with JDK 1.4
public static SocketImpl getImpl(Socket sock) {
SocketImpl impl = null;
try {
Field f = (Socket.class).getDeclaredField("impl");
f.setAccessible(true);
impl = (SocketImpl)f.get(sock);
} catch( Exception ex ) {
throw new RuntimeException(ex.toString());
}
return impl;
}
---------------------------
I use this with a customized and very old version
SocketManager/ConnectionManager.
Another tack to record traffic that I thought was even more elegant was to
have a Socks server that records traffic or a NAT like socket dispatcher.
Most clients can be configured to have a Socks server. One advantage is that
not only can you get mail trace, but also other protocols like IM traffic.
:-) Another advantage is that the logging is handled by a separate process.
Harmeet
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