/*
* Process activity from one of the debugger sockets. This could be a new
* connection or a data packet.
*/
private void processDebuggerActivity(SelectionKey key)
{
Debugger dbg = (Debugger)key.attachment();
try
{
if (key.acceptable)
{
try
{
acceptNewDebugger(dbg, null);
}
catch (IOException ioe)
{
Log.w("ddms", "debugger accept() failed");
Console.WriteLine(ioe.ToString());
Console.Write(ioe.StackTrace);
}
}
else if (key.readable)
{
processDebuggerData(key);
}
else
{
Log.d("ddm-debugger", "key in unknown state");
}
}
catch (CancelledKeyException)
{
// key has been cancelled we can ignore that.
}
}
/*
* We have incoming data from the debugger. Forward it to the client.
*/
private void processDebuggerData(SelectionKey key)
{
Debugger dbg = (Debugger)key.attachment();
try
{
/*
* Read pending data.
*/
dbg.read();
/*
* See if we have a full packet in the buffer. It's possible we have
* more than one packet, so we have to loop.
*/
JdwpPacket packet = dbg.jdwpPacket;
while (packet != null)
{
Log.v("ddms", "Forwarding dbg req 0x" + packet.id.toHexString() + " to " + dbg.client);
dbg.forwardPacketToClient(packet);
packet = dbg.jdwpPacket;
}
}
catch (IOException)
{
/*
* Close data connection; automatically un-registers dbg from
* selector. The failure could be caused by the debugger going away,
* or by the client going away and failing to accept our data.
* Either way, the debugger connection does not need to exist any
* longer. We also need to recycle the connection to the client, so
* that the VM sees the debugger disconnect. For a DDM-aware client
* this won't be necessary, and we can just send a "debugger
* disconnected" message.
*/
Log.d("ddms", "Closing connection to debugger " + dbg);
dbg.closeData();
Client client = dbg.client;
if (client.ddmAware)
{
// TODO: soft-disconnect DDM-aware clients
Log.d("ddms", " (recycling client connection as well)");
// we should drop the client, but also attempt to reopen it.
// This is done by the DeviceMonitor.
client.deviceImpl.monitor.addClientToDropAndReopen(client, DebugPortManager.DebugPortProvider.NO_STATIC_PORT);
}
else
{
Log.d("ddms", " (recycling client connection as well)");
// we should drop the client, but also attempt to reopen it.
// This is done by the DeviceMonitor.
client.deviceImpl.monitor.addClientToDropAndReopen(client, DebugPortManager.DebugPortProvider.NO_STATIC_PORT);
}
}
}
/*
* Something happened. Figure out what.
*/
private void processClientActivity(SelectionKey key)
{
Client client = (Client)key.attachment();
try
{
if (key.readable == false || key.valid == false)
{
Log.d("ddms", "Invalid key from " + client + ". Dropping client.");
dropClient(client, true); // notify
return;
}
client.read();
/*
* See if we have a full packet in the buffer. It's possible we have
* more than one packet, so we have to loop.
*/
JdwpPacket packet = client.jdwpPacket;
while (packet != null)
{
if (packet.ddmPacket)
{
// unsolicited DDM request - hand it off
Debug.Assert(!packet.reply);
callHandler(client, packet, null);
packet.consume();
}
else if (packet.reply && client.isResponseToUs(packet.id) != null)
{
// reply to earlier DDM request
ChunkHandler handler = client.isResponseToUs(packet.id);
if (packet.error)
{
client.packetFailed(packet);
}
else if (packet.empty)
{
Log.d("ddms", "Got empty reply for 0x" + packet.id.toHexString() + " from " + client);
}
else
{
callHandler(client, packet, handler);
}
packet.consume();
client.removeRequestId(packet.id);
}
else
{
Log.v("ddms", "Forwarding client " + (packet.reply ? "reply" : "event") + " 0x" + packet.id.toHexString() + " to " + client.debugger);
client.forwardPacketToDebugger(packet);
}
// find next
packet = client.jdwpPacket;
}
}
catch (CancelledKeyException)
{
// key was canceled probably due to a disconnected client before we could
// read stuff coming from the client, so we drop it.
dropClient(client, true); // notify
}
catch (IOException)
{
// something closed down, no need to print anything. The client is simply dropped.
dropClient(client, true); // notify
}
catch (Exception ex)
{
Log.e("ddms", ex);
/* close the client; automatically un-registers from selector */
dropClient(client, true); // notify
if (ex is OverflowException)
{
Log.w("ddms", "Client data packet exceeded maximum buffer size " + client);
}
else
{
// don't know what this is, display it
Log.e("ddms", ex);
}
}
}