/** Sets remote server to striped passive server mode (SPAS). */
public HostPortList setStripedPassive() throws IOException, ServerException {
Command cmd = new Command("SPAS", (controlChannel.isIPv6()) ? "2" : null);
Reply reply = null;
try {
reply = controlChannel.execute(cmd);
} catch (UnexpectedReplyCodeException urce) {
throw ServerException.embedUnexpectedReplyCodeException(urce);
} catch (FTPReplyParseException rpe) {
throw ServerException.embedFTPReplyParseException(rpe);
}
this.gSession.serverMode = GridFTPSession.SERVER_EPAS;
if (controlChannel.isIPv6()) {
gSession.serverAddressList = HostPortList.parseIPv6Format(reply.getMessage());
int size = gSession.serverAddressList.size();
for (int i = 0; i < size; i++) {
HostPort6 hp = (HostPort6) gSession.serverAddressList.get(i);
if (hp.getHost() == null) {
hp.setVersion(HostPort6.IPv6);
hp.setHost(controlChannel.getHost());
}
}
} else {
gSession.serverAddressList = HostPortList.parseIPv4Format(reply.getMessage());
}
return gSession.serverAddressList;
}
/**
* Computes and returns a checksum of a file. transferred.
*
* @param algorithm the checksume algorithm
* @param offset the offset
* @param length the length
* @param file file to compute checksum of
* @return the computed checksum
* @throws ServerException if an error occured.
*/
public String checksum(ChecksumAlgorithm algorithm, long offset, long length, String file)
throws IOException, ServerException {
String arguments =
algorithm.toFtpCmdArgument()
+ " "
+ String.valueOf(offset)
+ " "
+ String.valueOf(length)
+ " "
+ file;
Command cmd = new Command("CKSM", arguments);
Reply reply = null;
try {
reply = controlChannel.execute(cmd);
return reply.getMessage();
} catch (UnexpectedReplyCodeException urce) {
throw ServerException.embedUnexpectedReplyCodeException(urce);
} catch (FTPReplyParseException rpe) {
throw ServerException.embedFTPReplyParseException(rpe);
}
}