1 files changed, 126 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smackx/bytestreams/ibb/packet/Open.java b/src/org/jivesoftware/smackx/bytestreams/ibb/packet/Open.java
new file mode 100644
index 0000000..94a7a9b
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+++ b/src/org/jivesoftware/smackx/bytestreams/ibb/packet/Open.java
@@ -0,0 +1,126 @@
+/**
+ * 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();
+    }
+
+}