public synchronized void open(
String host, int port, String username, String password, boolean ssl)
throws IOException, ProtocolException {
if (username == null || password == null) {
Authenticate auth = getAuthenticator();
if (auth != null) {
if (username == null) {
User user = auth.getUser(host, "pop3", null);
if (user != null) {
username = user.getUsername();
password = user.getPassword();
}
} else {
password = auth.getPassword(host, "pop3", username);
}
}
}
Socket socket =
ssl ? SSLSocketFactory.getDefault().createSocket(host, port) : new Socket(host, port);
in = new ReadLineInputStream(socket.getInputStream());
out = socket.getOutputStream();
checkLine(readLine());
sendCommand("user " + username);
sendCommand("pass " + password);
String s = sendCommand("stat");
try {
messages = new Message[getNumberOfMessages(s)];
} catch (NumberFormatException e) {
close();
throw e;
}
for (int i = 0; i < messages.length; ++i) {
messages[i] = new Message(i + 1);
}
}
