Hello,
I am writing an app that connects to a server via telnet and scrapes
some data. I am having issues with the initial connection. All i get are
timout exceptions:
java.net.ConnectException: Connection timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at
org.apache.commons.net.SocketClient.connect(SocketClient.java:176)
at
org.lightspeedtech.ProductionAssistant.TelnetHandler.connect(TelnetHandler.java:104)
here is the relevant code:
TelnetHandler(Data data){
this.data = data;
tnet = new TelnetClient();
ttopt = new TerminalTypeOptionHandler("VT100", false, false, true,
false);
echoopt = new EchoOptionHandler(true, false, true, false);
gaopt = new SuppressGAOptionHandler(true, true, true, true);
try
{
tnet.addOptionHandler(ttopt);
tnet.addOptionHandler(echoopt);
tnet.addOptionHandler(gaopt);
}
catch (InvalidTelnetOptionException e)
{
System.err.println("Error registering option handlers: " +
e.getMessage());
}
}
protected boolean connect(){
try {
System.out.println("Trying to connect");
// throws timout exception
tnet.connect(SPO_SERVER, 23);
in = tnet.getInputStream();
out = (PrintStream)tnet.getOutputStream();
System.out.println("Connecting to server..");
readUntil(LOGIN_PROMPT);
write(data.telnetUserName);
System.out.println("Sending username..");
readUntil(PASS_PROMPT);
System.out.println("Sending pass..");
write(data.telnetUserName);
readUntil(SHELL_PROMPT);
System.out.println("got shell..");
write(SELECT_MENU);
readUntil(SUP_MAIN_PROMPT);
System.out.println("got sup menu..");
return true;
}
catch( Exception e){
e.printStackTrace();
return false;
}
}
The server is firewalled, requiring a connect via web browser or telnet
once to allow. I can connect fine via a linux telnet, but not via my
app. Any ideas would be appreciated.
Thanks,
~Dean Parshall
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