Android™
Android™
Pre-Allocate Server Space Before an FTP Upload (ALLO)
See more FTP Examples
Demonstrates the AllocateSize property, which sends the FTP ALLO command to pre-allocate disk space on the server before an upload. Set it to the size in bytes of the file about to be uploaded.
Background:
ALLO asks the server to reserve storage in advance, a requirement of certain legacy systems — older mainframes in particular — that need the exact file size up front to allocate a dataset. Modern servers allocate space dynamically and typically ignore or accept ALLO without needing it, so most applications never set this. Provide it only when targeting a host known to require pre-allocation.Chilkat Android™ Downloads
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;
import android.app.Activity;
import com.chilkatsoft.*;
import android.widget.TextView;
import android.os.Bundle;
public class SimpleActivity extends Activity {
private static final String TAG = "Chilkat";
// Called when the activity is first created.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
boolean success = false;
CkFtp2 ftp = new CkFtp2();
ftp.put_Hostname("ftp.example.com");
ftp.put_Username("myFtpLogin");
// Normally you would not hard-code the password in source. You should instead obtain it
// from an interactive prompt, environment variable, or a secrets vault.
ftp.put_Password("myPassword");
success = ftp.Connect();
if (success == false) {
Log.i(TAG, ftp.lastErrorText());
return;
}
// AllocateSize sends the FTP ALLO command to pre-allocate disk space on the server before an
// upload. It is rarely needed -- mainly for certain legacy systems that require the exact size
// in advance -- since most servers allocate space dynamically. Set it to the size in bytes of
// the file about to be uploaded.
ERROR: Assignment type mismatch. ExpressionType=int, atgType=uint
success = ftp.PutFile("qa_data/bigfile.zip","uploads/bigfile.zip");
if (success == false) {
Log.i(TAG, ftp.lastErrorText());
return;
}
Log.i(TAG, "Uploaded with pre-allocation.");
success = ftp.Disconnect();
if (success == false) {
Log.i(TAG, ftp.lastErrorText());
return;
}
}
static {
System.loadLibrary("chilkat");
// Note: If the incorrect library name is passed to System.loadLibrary,
// then you will see the following error message at application startup:
//"The application <your-application-name> has stopped unexpectedly. Please try again."
}
}