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/**
* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smackx.bytestreams.ibb.packet;
import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager;
import org.jivesoftware.smackx.bytestreams.ibb.InBandBytestreamManager.StanzaType;
/**
* Represents a request to open an In-Band Bytestream.
*
* @author Henning Staib
*/
public class Open extends IQ {
/* unique session ID identifying this In-Band Bytestream */
private final String sessionID;
/* block size in which the data will be fragmented */
private final int blockSize;
/* stanza type used to encapsulate the data */
private final StanzaType stanza;
/**
* Creates a new In-Band Bytestream open request packet.
* <p>
* The data sent over this In-Band Bytestream will be fragmented in blocks
* with the given block size. The block size should not be greater than
* 65535. A recommended default value is 4096.
* <p>
* The data can be sent using IQ stanzas or message stanzas.
*
* @param sessionID unique session ID identifying this In-Band Bytestream
* @param blockSize block size in which the data will be fragmented
* @param stanza stanza type used to encapsulate the data
*/
public Open(String sessionID, int blockSize, StanzaType stanza) {
if (sessionID == null || "".equals(sessionID)) {
throw new IllegalArgumentException("Session ID must not be null or empty");
}
if (blockSize <= 0) {
throw new IllegalArgumentException("Block size must be greater than zero");
}
this.sessionID = sessionID;
this.blockSize = blockSize;
this.stanza = stanza;
setType(Type.SET);
}
/**
* Creates a new In-Band Bytestream open request packet.
* <p>
* The data sent over this In-Band Bytestream will be fragmented in blocks
* with the given block size. The block size should not be greater than
* 65535. A recommended default value is 4096.
* <p>
* The data will be sent using IQ stanzas.
*
* @param sessionID unique session ID identifying this In-Band Bytestream
* @param blockSize block size in which the data will be fragmented
*/
public Open(String sessionID, int blockSize) {
this(sessionID, blockSize, StanzaType.IQ);
}
/**
* Returns the unique session ID identifying this In-Band Bytestream.
*
* @return the unique session ID identifying this In-Band Bytestream
*/
public String getSessionID() {
return sessionID;
}
/**
* Returns the block size in which the data will be fragmented.
*
* @return the block size in which the data will be fragmented
*/
public int getBlockSize() {
return blockSize;
}
/**
* Returns the stanza type used to encapsulate the data.
*
* @return the stanza type used to encapsulate the data
*/
public StanzaType getStanza() {
return stanza;
}
@Override
public String getChildElementXML() {
StringBuilder buf = new StringBuilder();
buf.append("<open ");
buf.append("xmlns=\"");
buf.append(InBandBytestreamManager.NAMESPACE);
buf.append("\" ");
buf.append("block-size=\"");
buf.append(blockSize);
buf.append("\" ");
buf.append("sid=\"");
buf.append(sessionID);
buf.append("\" ");
buf.append("stanza=\"");
buf.append(stanza.toString().toLowerCase());
buf.append("\"");
buf.append("/>");
return buf.toString();
}
}
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