Java Code Examples for javax.microedition.io.Connection#close()

public DataInputStream openDataInputStream(String name) throws IOException {
  Connection con = open(name, ConnectorService.READ, false);

  if (con instanceof InputConnection) {
    DataInputStream stream = ((InputConnection)con).openDataInputStream();
    con.close();
    return stream;
  }
  con.close();
  throw new IOException("Given scheme does not support input");
}
 

public DataOutputStream openDataOutputStream(String name) throws IOException {
  Connection con = open(name, ConnectorService.WRITE, false);

  if (con instanceof OutputConnection) {
    DataOutputStream stream = ((OutputConnection)con).openDataOutputStream();
    con.close();
    return stream;
  }

  con.close();
  throw new IOException("Given scheme does not support output");
}
 

public InputStream openInputStream(String name) throws IOException {

    Connection con = open(name, ConnectorService.READ, false);

    if (con instanceof InputConnection) {
      InputStream stream = ((InputConnection)con).openInputStream();
      con.close();
      return stream;
    }

    con.close();
    throw new IOException("Given scheme does not support input");
  }
 

public OutputStream openOutputStream(String name) throws IOException {
  Connection con = open(name, ConnectorService.WRITE, false);

  if (con instanceof OutputConnection) {
    OutputStream stream = ((OutputConnection)con).openOutputStream();
    con.close();
    return stream;
  }

  con.close();
  throw new IOException("Given scheme does not support output");
}
 

/**
 * Finds the type of the content in this Invocation.
 * <p>
 * The calling thread blocks while the type is being determined.
 * If a network access is needed there may be an associated delay.
 *
 * @return the content type.
 *          May be <code>null</code> if the type can not be determined.
 *
 * @exception IOException if access to the content fails
 * @exception IllegalArgumentException if the content is accessed via
 *  the URL and the URL is invalid
 * @exception SecurityException is thrown if access to the content
 *  is required and is not permitted
 */
String findType() throws IOException, SecurityException {
    String type = null;
    Connection conn = openPrim(true);
    if (conn instanceof ContentConnection) {
    	if( conn instanceof HttpConnection ){
    		HttpConnection hc = (HttpConnection)conn;
         hc.setRequestMethod(HttpConnection.HEAD);
	
         // actual connection performed, some delay...
         if (hc.getResponseCode() != HttpConnection.HTTP_OK)
         	return null;
    	}
    	
        type = ((ContentConnection)conn).getType();
        conn.close();

        if (type != null) {
            // Check for and remove any parameters (rfc2616)
            int ndx = type.indexOf(';');
            if (ndx >= 0) {
                type = type.substring(0, ndx);
            }
            type = type.trim();
            if (type.length() == 0) {
                type = null;
            }
        }
    }

    return type;
}
 

public static boolean testUrl(String server, String protocol, int channel) throws IOException{

	String url = protocol + server + ":" + channel;
	String fullurl = url + ";authenticate=false;encrypt=false";
	try{
		
		Connection con = Connector.open(fullurl, Connector.READ_WRITE, true);
		PrintUtil.out.println(url + " -> Open Channel!!! " + con.getClass().getSimpleName());
		con.close();
		return true;
	}catch(IllegalArgumentException a){  
	
	}catch(Exception e){
		
		String msg = e.getMessage();
		
		if (!msg.contains("0xe00002cd") && !msg.contains("timeout")){
		
			PrintUtil.out.println(url + " -\\> " + msg);
			//e.printStackTrace();
		}
		
		return false;
	}
	
	return true;
}