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Application layer keepalives to detect dead TCP connections.

Browse Source 
DuplexOutgoingSession flushes its output stream if it's idle for a
transport-defined interval, causing an empty frame to be sent. The TCP
and Tor plugins use a socket timeout equal to twice the idle interval to
detect dead connections.

See bugs #27, #46 and #60.
This commit is contained in:
akwizgran
2014-12-13 12:00:40 +00:00
parent 3a70aa7653
commit d4fa656dbb
19 changed files with 95 additions and 26 deletions
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4
briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPlugin.java
View File

@@ -27,8 +27,8 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
AndroidLanTcpPlugin(Executor ioExecutor, Context appContext,
DuplexPluginCallback callback, int maxFrameLength, long maxLatency,
long pollingInterval) {
super(ioExecutor, callback, maxFrameLength, maxLatency,
long maxIdleTime, long pollingInterval) {
super(ioExecutor, callback, maxFrameLength, maxLatency, maxIdleTime,
pollingInterval);
this.appContext = appContext;
}

3
briar-android/src/org/briarproject/plugins/tcp/AndroidLanTcpPluginFactory.java
View File

@@ -13,6 +13,7 @@ public class AndroidLanTcpPluginFactory implements DuplexPluginFactory {
private static final int MAX_FRAME_LENGTH = 1024;
private static final long MAX_LATENCY = 60 * 1000; // 1 minute
private static final long MAX_IDLE_TIME = 30 * 1000; // 30 seconds
private static final long POLLING_INTERVAL = 60 * 1000; // 1 minute
private final Executor ioExecutor;
@@ -29,6 +30,6 @@ public class AndroidLanTcpPluginFactory implements DuplexPluginFactory {
public DuplexPlugin createPlugin(DuplexPluginCallback callback) {
return new AndroidLanTcpPlugin(ioExecutor, appContext, callback,
MAX_FRAME_LENGTH, MAX_LATENCY, POLLING_INTERVAL);
MAX_FRAME_LENGTH, MAX_LATENCY, MAX_IDLE_TIME, POLLING_INTERVAL);
}
}