Package org.jgroups
Class Header
java.lang.Object
org.jgroups.Header
- All Implemented Interfaces:
Externalizable
,Serializable
- Direct Known Subclasses:
AuthHeader
,BSH.BshHeader
,CAUSAL.CausalHeader
,CAUSAL.CausalNewViewHeader
,COMPRESS.CompressHeader
,DISCARD.DiscardHeader
,ENCRYPT.EncryptHeader
,FC.FcHeader
,FD_ALL.Header
,FD_SIMPLE.FdHeader
,FD_SOCK.FdHeader
,FD.FdHeader
,FLUSH.FlushHeader
,FragHeader
,GMS.GmsHeader
,HTOTAL.HTotalHeader
,MERGE3.CoordAnnouncement
,MERGEFAST.MergefastHeader
,MuxHeader
,NakAckHeader
,PingHeader
,PullPushAdapter.PullHeader
,RequestCorrelator.Header
,SEQUENCER.SequencerHeader
,SFC.Header
,SMACK.SmackHeader
,STABLE.StableHeader
,STATE_TRANSFER.StateHeader
,STREAMING_STATE_TRANSFER.StateHeader
,TcpHeader
,TpHeader
,TunnelHeader
,UdpHeader
,UNICAST.UnicastHeader
,VERIFY_SUSPECT.VerifyHeader
,VIEW_SYNC.ViewSyncHeader
Abstract base class for all headers to be added to a Message.
- Author:
- Bela Ban
- See Also:
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.io.Externalizable
readExternal, writeExternal
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Field Details
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HDR_OVERHEAD
public static final int HDR_OVERHEAD- See Also:
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Constructor Details
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Header
public Header()
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Method Details
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size
public int size()To be implemented by subclasses. Return the size of this object for the serialized version of it. I.e. how many bytes this object takes when flattened into a buffer. This may be different for each instance, or can be the same. This may also just be an estimation. E.g. FRAG uses it on Message to determine whether or not to fragment the message. Fragmentation itself will be accurate, because the entire message will actually be serialized into a byte buffer, so we can determine the exact size. -
toString
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