Webmaster Forum / ColdFusion / Advanced Techniques / April 2005

if it doesn't need to be ping, you might look at java sockets (i'm at home,
i'll see if i can post better code when i get to the office tomorrow). this is
from memory:

<cfscript>
    try {
    socket=CreateObject("java", "java.net.Socket");
    hostIP=javacast("string", "10.10.10.10"); // your remote host goes here
    dayTimePort=javacast("int", 13);
    socket.init(hostIP, dayTimePort);
    socket.setSoTimeout(100);
    ServerIP = socket.toString();
    ServerPort = socket.getPort();
    socket.close()   
    } // try
    catch ("java.net.SocketException",e) {
        socket.close();
    }
 </cfscript>

just to keep my promise:

<cfscript>
    try {
    socket=CreateObject("java", "java.net.Socket");
    readerObj=createObject("java","java.io.InputStreamReader");
    bufferedObj=createObject("java","java.io.BufferedReader");   
    hostIP=javacast("string", "10.10.10.10"); // your remote host goes here
    dayTimePort=javacast("int", 13); // or some other port that is allowed on
their firewall/host
    socket.init(hostIP, dayTimePort);
    socket.setSoTimeout(1000); // some reasonable timeout value
    inReader=readerObj.init(socket.getInputStream());
    bReader=bufferedObj.init(inReader);
    isAlive=true;
    // check that box
    tStamp=bReader.readLine();
    ServerIP = socket.toString();
    ServerPort = socket.getPort();
    socket.close();
    if (isAlive)
        writeoutput("server #serverIP# (#serverPort#) is alive at #tStamp#");
    } // try
    catch ("java.net.SocketException" e) {
        socket.close();
        isAlive=false;
        writeoutput("server #hostIP# (#dayTimePort#) is dead as a doorknob at
#now()#");
    }
 </cfscript>

which code?