Android Open Source - Orlib U D P Encapsulation

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License

The source code is released under:

GNU Lesser General Public License

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Java Source Code

package net.sourceforge.jsocks.socks;
//from ww w.  ja v  a2s . co m
/**
 This interface provides for datagram encapsulation for SOCKSv5 protocol.
 <p>
 SOCKSv5 allows for datagrams to be encapsulated for purposes of integrity
 and/or authenticity. How it should be done is aggreed during the 
 authentication stage, and is authentication dependent. This interface is
 provided to allow this encapsulation.
 @see Authentication
*/
public interface UDPEncapsulation{

    /**
    This method should provide any authentication depended transformation
    on datagrams being send from/to the client.

    @param data Datagram data (including any SOCKS related bytes), to be
                encapsulated/decapsulated.
    @param out  Wether the data is being send out. If true method should 
                encapsulate/encrypt data, otherwise it should decapsulate/
                decrypt data.
    @throw IOException if for some reason data can be transformed correctly.
    @return Should return byte array containing data after transformation.
            It is possible to return same array as input, if transformation
            only involves bit mangling, and no additional data is being
            added or removed.
    */
    byte[] udpEncapsulate(byte[] data, boolean out) throws java.io.IOException;
}

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