/**
* Constructor. Establishes a TCP socket connection with the DHCP client daemon on port 5818.
*
* @throws IOException if unable to establish the connection with the DHCP client daemon.
*/
private Poller(long timeout) throws IOException {
DhcpdConfigFactory dcf = DhcpdConfigFactory.getInstance();
try {
LOG.debug(
"Poller.ctor: opening socket connection with DHCP client daemon on port {}",
dcf.getPort());
m_connection = new Socket(InetAddressUtils.addr("127.0.0.1"), dcf.getPort());
LOG.debug("Poller.ctor: setting socket timeout to {}", timeout);
m_connection.setSoTimeout((int) timeout);
// Establish input/output object streams
m_ins = new ObjectInputStream(m_connection.getInputStream());
m_outs = new ObjectOutputStream(m_connection.getOutputStream());
m_outs.reset();
m_outs.flush();
} catch (IOException ex) {
LOG.error("IO Exception during socket connection establishment with DHCP client daemon.", ex);
if (m_connection != null) {
try {
m_ins.close();
m_outs.close();
m_connection.close();
} catch (Throwable t) {
}
}
throw ex;
} catch (Throwable t) {
LOG.error(
"Unexpected exception during socket connection establishment with DHCP client daemon.",
t);
if (m_connection != null) {
try {
m_ins.close();
m_outs.close();
m_connection.close();
} catch (Throwable tx) {
}
}
throw new UndeclaredThrowableException(t);
}
}
