/** Required. First procedure ever called. Adjust to your needs. */
public static void init() {
if (false) {
net.ddp2p.common.plugin_data.PluginRequest sentMenuItem =
new net.ddp2p.common.plugin_data.PluginRequest();
sentMenuItem.type = net.ddp2p.common.plugin_data.PluginRequest.REGISTER_MENU;
sentMenuItem.plugin_GID = plugin_GID;
sentMenuItem.column =
net.ddp2p.common.plugin_data.PluginMenus
.COLUMN_MYSELF; // for a new plugin how to decide which col?
enqueue(sentMenuItem);
}
}
/**
* @param message
* @param peerGID
* @param peer
* @return the message actually sent (and its sequence numbers)
*/
public static ChatMessage sendMessage(String message, String peerGID, D_Peer peer) {
if (DEBUG) System.out.println("PLUGIN CHAT: Main: sendMessage enter: " + message);
if (peer != null && peerGID == null) peerGID = peer.getGID();
// create a hashtable where ht(key=peerGID ) ==> cm (chatMessage)
ChannelDataOut channeldata_out = ChannelDataOut.get(peerGID);
ChannelDataIn channeldata_in = ChannelDataIn.get(peerGID);
if (DEBUG)
System.out.println("PLUGIN CHAT: Main: sendMessage got channel out: " + channeldata_out);
if (DEBUG)
System.out.println("PLUGIN CHAT: Main: sendMessage got channel in: " + channeldata_in);
ChatMessage cm = new ChatMessage();
cm.session_id = channeldata_out.getSessionID();
// cm.session_id_ack = cmsg.session_id;
cm.message_type = ChatMessage.MT_TEXT;
cm.first_in_this_sequence =
channeldata_out.getFirstInSequence(); // cmsg.first_in_this_sequence;
ChatElem ce = new ChatElem();
ce.type = 0; // name
ce.val = Main.name;
cm.content = new ArrayList<ChatElem>();
cm.content.add(ce);
cm.msg = message;
// first time message to this peer
cm.session_id_ack = channeldata_in.getSessionID();
cm.last_acknowledged_in_sequence = channeldata_in.getLastInSequence();
cm.received_out_of_sequence = channeldata_in.getOutOfSequence();
cm.sequence = channeldata_out.getNextSequence();
// msgTrackingSend.put(peer_GID, cm); // only store the last message info for each peer
// save to DB for history ( peer_GID:sender(myself): Date/Time : msg as object )
if (DEBUG) System.out.println("PLUGIN CHAT: Main: send: " + cm);
// confirm the sending into the GUI
receiver.addSentMessage(cm, peerGID, channeldata_out);
byte[] _msg = cm.encode();
net.ddp2p.common.plugin_data.PluginRequest envelope =
new net.ddp2p.common.plugin_data.PluginRequest();
envelope.msg = _msg;
envelope.peer_GID = peerGID; // destination
envelope.type = net.ddp2p.common.plugin_data.PluginRequest.MSG;
envelope.plugin_GID = (String) Main.getPluginDataHashtable().get("plugin_GID");
if (DEBUG) System.out.println("PLUGIN CHAT: Main: send envelope: " + envelope);
Main.enqueue(envelope);
if (DEBUG) System.out.println("PLUGIN CHAT: Main: sendMessage exit");
return cm;
}
/** Called from outside: */
public static void handleReceivedMessage(byte[] msg, String peer_GID) {
// boolean DEBUG = true;
if (DEBUG)
System.out.println(
"PLUGIN CHAT: From: "
+ peer_GID
+ " got "
+ net.ddp2p.common.plugin_data.PluginRequest.byteToHex(msg, ":"));
ChatMessage cmsg = null;
try {
synchronized (monitor) {
cmsg = new ChatMessage().decode(new Decoder(msg));
if (DEBUG) System.out.println("PLUGIN CHAT: got msg: " + cmsg);
// extract acknowledgment piggybacked in messages
ChannelDataOut channeldata_out = ChannelDataOut.get(peer_GID);
receiver.confirmMessages(
cmsg.last_acknowledged_in_sequence,
cmsg.received_out_of_sequence,
peer_GID,
cmsg.session_id_ack,
channeldata_out);
if (cmsg.message_type != ChatMessage.MT_EMPTY)
forwardMsgToReceiverAndSendAckToSender(cmsg, peer_GID);
}
} catch (ASN1DecoderFail e) {
e.printStackTrace();
return;
}
}
/**
* Sends an acknowledgment for cmsg. Not setting a sequence number, since the ack message is
* empty.
*
* @param cmsg
* @param peer_GID
*/
private static void sendAckMsg(ChannelDataIn channeldata_in, ChatMessage cmsg, String peer_GID) {
// boolean DEBUG = true;
if (DEBUG) System.out.println("PLUGIN CHAT: Main: sendAckMsg: enter");
ChannelDataOut cd = ChannelDataOut.get(peer_GID);
ChatMessage cm = new ChatMessage();
cm.message_type =
ChatMessage
.MT_EMPTY; // just to inform session_id, session_id_ack, first_in_this_sequence,
// last_acknowledged_in_sequence, received_out_of_sequence
cm.last_acknowledged_in_sequence = channeldata_in.getLastInSequence(); // cmsg.sequence;
cm.received_out_of_sequence = channeldata_in.getOutOfSequence();
cm.session_id_ack = channeldata_in.getSessionID(); // cmsg.session_id;
cm.session_id = cd.getSessionID();
cm.first_in_this_sequence = cd.getFirstInSequence(); // cmsg.first_in_this_sequence;
// cm.sequence = cd.getNextSequence(); //cmsg.sequence. probably should not be set for empty
// messages!
ChatElem ce = new ChatElem();
ce.type = 0; // name
ce.val = Main.name;
cm.content = new ArrayList<ChatElem>();
cm.content.add(ce);
// cm.content = null;
cm.msg = null;
if (DEBUG) System.out.println("PLUGIN CHAT: sendAckMsg: sending " + cm);
byte[] _msg = cm.encode();
net.ddp2p.common.plugin_data.PluginRequest envelope =
new net.ddp2p.common.plugin_data.PluginRequest();
envelope.msg = _msg;
envelope.peer_GID = peer_GID; // destination
envelope.type = net.ddp2p.common.plugin_data.PluginRequest.MSG;
envelope.plugin_GID = (String) Main.getPluginDataHashtable().get("plugin_GID");
Main.enqueue(envelope);
if (DEBUG) System.out.println("PLUGIN CHAT: sendAckMsg: sending env " + envelope);
if (DEBUG) System.out.println("PLUGIN CHAT: Main: sendAckMsg: exit");
}
