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catch up with changes in udp proto: use vli for packet num in header.

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This commit is contained in:
Eric House 2013-08-25 16:15:37 -07:00
parent 7e02db78db
commit 47414beeb2
1 changed files with 51 additions and 6 deletions
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57
xwords4/android/XWords4/src/org/eehouse/android/xw4/RelayService.java
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@ -27,6 +27,8 @@ import android.os.AsyncTask;
import android.os.Handler;
import android.os.IBinder;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
@ -88,7 +90,10 @@ public class RelayService extends XWService
private long m_lastGamePacketReceived;
// These must match the enum XWRelayReg in xwrelay.h
private static final int XWPDEV_PROTO_VERSION = 0;
private static enum XWPDevProto { XWPDEV_PROTO_VERSION_INVALID
,XWPDEV_PROTO_VERSION_1
};
// private static final int XWPDEV_NONE = 0;
// Must be kept in sync with eponymous enum in xwrelay.h
@ -624,7 +629,7 @@ public class RelayService extends XWService
try {
DataOutputStream out =
addProtoAndCmd( bas, XWRelayReg.XWPDEV_ACK );
out.writeInt( header.m_packetID );
un2vli( header.m_packetID, out );
postPacket( bas );
} catch ( java.io.IOException ioe ) {
DbgUtils.loge( ioe );
@ -637,8 +642,8 @@ public class RelayService extends XWService
{
PacketHeader result = null;
byte proto = dis.readByte();
if ( XWPDEV_PROTO_VERSION == proto ) {
int packetID = dis.readInt();
if ( XWPDevProto.XWPDEV_PROTO_VERSION_1.ordinal() == proto ) {
int packetID = vli2un( dis );
if ( 0 != packetID ) {
DbgUtils.logf( "readHeader: got packetID %d", packetID );
}
@ -666,8 +671,8 @@ public class RelayService extends XWService
throws java.io.IOException
{
DataOutputStream out = new DataOutputStream( bas );
out.writeByte( XWPDEV_PROTO_VERSION );
out.writeInt( nextPacketID( cmd ) ); // packetID
out.writeByte( XWPDevProto.XWPDEV_PROTO_VERSION_1.ordinal() );
un2vli( nextPacketID( cmd ), out );
out.writeByte( cmd.ordinal() );
return out;
}
@ -951,6 +956,46 @@ public class RelayService extends XWService
stopUDPThreadsIf();
}
private static void un2vli( int nn, OutputStream os )
throws java.io.IOException
{
int indx = 0;
boolean done = false;
do {
byte byt = (byte)(nn & 0x7F);
nn >>= 7;
done = 0 == nn;
if ( done ) {
byt |= 0x80;
}
os.write( byt );
} while ( !done );
}
private static int vli2un( InputStream is ) throws java.io.IOException
{
int result = 0;
byte[] buf = new byte[1];
int nRead = 0;
boolean done = false;
for ( int count = 0; !done; ++count ) {
nRead = is.read( buf );
if ( 1 != nRead ) {
DbgUtils.logf( "vli2un: unable to read from stream" );
break;
}
int byt = buf[0];
done = 0 != (byt & 0x80);
if ( done ) {
byt &= 0x7F;
}
result |= byt << (7 * count);
}
return result;
}
/* Timers:
*
* Two goals: simulate the GCM experience for those who don't have