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Allow retry opening RTP ports.

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In RtpDataLoadable.load, the second UDP data source is opened on the port we
specify. If the port is already in use, a BindException is thrown.

#minor-release

PiperOrigin-RevId: 371319522
This commit is contained in:
claincly 2021-04-30 14:11:43 +01:00 committed by bachinger
parent e8cd1f18da
commit 4eccc0356c
1 changed files with 14 additions and 0 deletions
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14
library/rtsp/src/main/java/com/google/android/exoplayer2/source/rtsp/RtspMediaPeriod.java
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@ -53,6 +53,7 @@ import com.google.android.exoplayer2.upstream.Loader.Loadable;
import com.google.android.exoplayer2.util.Util;
import com.google.common.collect.ImmutableList;
import java.io.IOException;
import java.net.BindException;
import java.net.SocketTimeoutException;
import java.util.ArrayList;
import java.util.List;
@ -63,6 +64,9 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
public final class RtspMediaPeriod implements MediaPeriod {
private static final String TAG = "RtspMediaPeriod";
/** The maximum times to retry if the underlying data channel failed to bind. */
private static final int PORT_BINDING_MAX_RETRY_COUNT = 3;
private final Allocator allocator;
private final Handler handler;
@ -81,6 +85,7 @@ public final class RtspMediaPeriod implements MediaPeriod {
private boolean released;
private boolean prepared;
private boolean trackSelected;
private int portBindingRetryCount;
/**
* Creates an RTSP media period.
@ -426,6 +431,15 @@ public final class RtspMediaPeriod implements MediaPeriod {
} else {
if (error.getCause() instanceof SocketTimeoutException) {
handleSocketTimeout(loadable);
} else if (error.getCause() instanceof BindException) {
// Allow for retry on RTP port open failure by catching BindException. Two ports are
// opened for each RTP stream, the first port number is auto assigned by the system, while
// the second is manually selected. It is thus possible that the second port fails to
// bind. Failing is more likely when running in a server-side testing environment, it is
// less likely on real devices.
if (portBindingRetryCount++ < PORT_BINDING_MAX_RETRY_COUNT) {
return Loader.RETRY;
}
} else {
playbackException =
new RtspPlaybackException(