Objective-C

Set the FTP Transfer Type to Binary

Demonstrates the Chilkat Ftp2.SetTypeBinary method, which sets the FTP representation type to binary (TYPE I) for subsequent transfers. It takes no arguments.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: Binary mode transfers bytes verbatim and is the correct choice for essentially every file, text included. Chilkat already defaults to binary, so no call is needed to use it — this method exists to switch back explicitly after a prior SetTypeAscii. The alternative ASCII mode applies line-ending translation that corrupts binary files, so binary is the safe default to keep in place.

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Objective-C

#import <CkoFtp2.h>

BOOL success = NO;

//  Demonstrates the Ftp2.SetTypeBinary method, which sets the FTP representation type to binary
//  (TYPE I) for subsequent transfers.  It takes no arguments.

CkoFtp2 *ftp = [[CkoFtp2 alloc] init];

ftp.Hostname = @"ftp.example.com";
ftp.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.Password = @"myPassword";

success = [ftp Connect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

//  Binary mode preserves file bytes exactly and is the appropriate choice for nearly all modern
//  file types, text included.  Chilkat already defaults to binary, so this call is only needed to
//  switch back after a prior SetTypeAscii.
success = [ftp SetTypeBinary];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

success = [ftp GetFile: @"public_html/archive.zip" localPath: @"qa_output/archive.zip"];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

success = [ftp Disconnect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}