/**
* parse: parse the string and send response
*
* @param str: the given string
*/
protected void parse(String str) {
StringTokenizer st = new StringTokenizer(str);
String tkn = st.nextToken();
try {
if (tkn.equals(ProtocolConstants.PACK_STR_HEARTBEAT_HEAD)) {
_dlog("I got heartbeat");
// Send back confirmation
// TODO: add more story here
NetComm.send(ProtocolConstants.PACK_STR_HEARTBEAT_HEAD, _out);
} else if (tkn.equals(ProtocolConstants.PACK_STR_REQUEST_FS_HEAD)) {
// TODO: add more story here
} else {
_elog("Invalid header, skip.");
}
} catch (Exception e) {
if (!_server.noException()) {
_elog(e.toString());
}
if (_server.debugMode()) {
e.printStackTrace();
}
}
}
/**
* connect: connect to the master
*
* @return: true for success and false for failure
*/
protected boolean connect() {
boolean connected = true;
try {
_sock = new Socket(_serverIP, _serverPort);
_out = new PrintWriter(_sock.getOutputStream(), true);
_in = new BufferedReader(new InputStreamReader(_sock.getInputStream()));
String reply = sendAll();
if (!reply.equals(ProtocolConstants.PACK_STR_CONFIRM_HEAD)) {
/* Tokenize */
StringTokenizer st = new StringTokenizer(reply);
if (st.nextToken().equals(ProtocolConstants.PACK_STR_ERRMES_HEAD)) {
_elog(st.nextToken());
return false;
}
}
_userSock = new Socket(_serverIP, _serverPort);
_userOut = new PrintWriter(_userSock.getOutputStream(), true);
_userIn = new BufferedReader(new InputStreamReader(_userSock.getInputStream()));
String replyUser = sendUserID();
if (!replyUser.equals(ProtocolConstants.PACK_STR_CONFIRM_HEAD)) {
throw new Exception("Not confirmed");
}
} catch (UnknownHostException e) {
if (!_server.noException()) {
_elog(e.toString());
}
if (_server.debugMode()) {
e.printStackTrace();
}
connected = false;
} catch (IOException e) {
if (!_server.noException()) {
_elog(e.toString());
}
if (_server.debugMode()) {
e.printStackTrace();
}
connected = false;
} catch (Exception e) {
if (!_server.noException()) {
_elog(e.toString());
}
if (_server.debugMode()) {
e.printStackTrace();
}
connected = false;
}
if (!connected) {
return connected;
}
if (!connected) {
/* Remove the pair of socket */
_sock = null;
_in = null;
_out = null;
_userSock = null;
_userOut = null;
_userIn = null;
}
return connected;
}