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Code Issues Projects Releases Wiki Activity

New polling logic for Bluetooth. #251

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The polling interval increases exponentially each time polling is unsuccessful, up to a maximum of 60 minutes. The interval is reset to 2 minutes whenever a connection is made and whenever Bluetooth is re-enabled.
This commit is contained in:
akwizgran
2016-02-12 15:40:01 +00:00
parent a774b3419a
commit c081c08ff5
16 changed files with 216 additions and 133 deletions
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24
briar-desktop/src/org/briarproject/plugins/bluetooth/BluetoothPlugin.java
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@@ -3,6 +3,7 @@ package org.briarproject.plugins.bluetooth;
import org.briarproject.api.TransportId;
import org.briarproject.api.contact.ContactId;
import org.briarproject.api.crypto.PseudoRandom;
import org.briarproject.api.plugins.Backoff;
import org.briarproject.api.plugins.duplex.DuplexPlugin;
import org.briarproject.api.plugins.duplex.DuplexPluginCallback;
import org.briarproject.api.plugins.duplex.DuplexTransportConnection;
@@ -43,25 +44,25 @@ class BluetoothPlugin implements DuplexPlugin {
private static final int UUID_BYTES = 16;
private final Executor ioExecutor;
private final Clock clock;
private final SecureRandom secureRandom;
private final Clock clock;
private final Backoff backoff;
private final DuplexPluginCallback callback;
private final int maxLatency, pollingInterval;
private final int maxLatency;
private final Semaphore discoverySemaphore = new Semaphore(1);
private volatile boolean running = false;
private volatile StreamConnectionNotifier socket = null;
private volatile LocalDevice localDevice = null;
BluetoothPlugin(Executor ioExecutor, Clock clock, SecureRandom secureRandom,
DuplexPluginCallback callback, int maxLatency,
int pollingInterval) {
BluetoothPlugin(Executor ioExecutor, SecureRandom secureRandom, Clock clock,
Backoff backoff, DuplexPluginCallback callback, int maxLatency) {
this.ioExecutor = ioExecutor;
this.clock = clock;
this.secureRandom = secureRandom;
this.clock = clock;
this.backoff = backoff;
this.callback = callback;
this.maxLatency = maxLatency;
this.pollingInterval = pollingInterval;
}
public TransportId getId() {
@@ -117,6 +118,7 @@ class BluetoothPlugin implements DuplexPlugin {
return;
}
socket = ss;
backoff.reset();
callback.transportEnabled();
acceptContactConnections(ss);
}
@@ -160,6 +162,7 @@ class BluetoothPlugin implements DuplexPlugin {
if (LOG.isLoggable(INFO)) LOG.info(e.toString());
return;
}
backoff.reset();
callback.incomingConnectionCreated(wrapSocket(s));
if (!running) return;
}
@@ -183,11 +186,12 @@ class BluetoothPlugin implements DuplexPlugin {
}
public int getPollingInterval() {
return pollingInterval;
return backoff.getPollingInterval();
}
public void poll(final Collection<ContactId> connected) {
if (!running) return;
backoff.increment();
// Try to connect to known devices in parallel
Map<ContactId, TransportProperties> remote =
callback.getRemoteProperties();
@@ -202,8 +206,10 @@ class BluetoothPlugin implements DuplexPlugin {
public void run() {
if (!running) return;
StreamConnection s = connect(makeUrl(address, uuid));
if (s != null)
if (s != null) {
backoff.reset();
callback.outgoingConnectionCreated(c, wrapSocket(s));
}
}
});
}