77 lines
2.4 KiB
Java
77 lines
2.4 KiB
Java
package protocolP2P;
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import protocolP2P.CodeType;
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import localException.ProtocolError;
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import java.util.HashMap;
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import java.util.Map;
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import java.lang.Byte;
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/** Request/Response code enum.
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* @author Louis Royer
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* @author Flavien Haas
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* @author JS Auge
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* @version 1.0
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*/
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public enum RequestResponseCode {
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LIST_REQUEST(CodeType.REQUEST, (byte)0x00),
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LOAD_REQUEST(CodeType.REQUEST, (byte)0x01),
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HASH_REQUEST(CodeType.REQUEST, (byte)0x02),
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DISCOVER_REQUEST(CodeType.REQUEST_TRACKER, (byte)0x03),
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REGISTER(CodeType.REQUEST_TRACKER, (byte)0x04),
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UNREGISTER(CodeType.REQUEST_TRACKER, (byte)0x05),
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RATIO_REQUEST(CodeType.REQUEST_TRACKER, (byte)0x06),
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UPDATE_RATIO(CodeType.REQUEST_TRACKER, (byte)0x07),
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LIST_RESPONSE(CodeType.RESPONSE, (byte)0x80),
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LOAD_RESPONSE(CodeType.RESPONSE, (byte)0x81),
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HASH_RESPONSE(CodeType.RESPONSE, (byte)0x82),
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DISCOVER_RESPONSE(CodeType.RESPONSE, (byte)0x83),
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RATIO_RESPONSE(CodeType.RESPONSE, (byte)0x86),
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VERSION_ERROR(CodeType.ERROR, (byte)0xC0),
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PROTOCOL_ERROR(CodeType.ERROR, (byte)0xC1),
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INTERNAL_ERROR(CodeType.ERROR, (byte)0xC2),
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EMPTY_DIRECTORY(CodeType.ERROR, (byte)0xC3),
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NOT_FOUND(CodeType.ERROR, (byte)0xC4),
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EMPTY_FILE(CodeType.ERROR, (byte)0xC5),
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NOT_A_TRACKER(CodeType.ERROR, (byte)0xC6),
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UNKNOWN_HOST(CodeType.ERROR, (byte)0xC7),
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DENIED(CodeType.ERROR, (byte)0xC8);
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public final CodeType codeType;
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public final byte codeValue;
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protected final static int RRCODE_POSITION = 1;
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/* To be able to convert code to enum */
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private static final Map<Byte, RequestResponseCode> BY_CODE = new HashMap<>();
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/* Initialization of HashMap */
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static {
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for (RequestResponseCode r: values()) {
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assert !BY_CODE.containsKey(Byte.valueOf(r.codeValue)) : "Duplicate in " + RequestResponseCode.class.getCanonicalName();
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BY_CODE.put(Byte.valueOf(r.codeValue), r);
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}
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}
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/** Private constructor
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* @param codeType type of code (request or response)
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* @param codeValue value of the element in Packet
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* @return enum element
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*/
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private RequestResponseCode(CodeType codeType, byte codeValue) {
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this.codeType = codeType;
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this.codeValue = codeValue;
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}
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/** Gives enum from Packet code.
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* @param code value of the element in packet
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* @return enum element
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* @throws ProtocolError
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*/
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protected static RequestResponseCode fromCode(byte code) throws ProtocolError {
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RequestResponseCode r = BY_CODE.get(Byte.valueOf(code));
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if (r == null) {
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throw new ProtocolError();
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}
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return r;
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}
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}
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