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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.codec.socks;

import io.netty.buffer.ByteBuf;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.StringUtil;

final class SocksCommonUtils {
    public static final SocksRequest UNKNOWN_SOCKS_REQUEST = new UnknownSocksRequest();
    public static final SocksResponse UNKNOWN_SOCKS_RESPONSE = new UnknownSocksResponse();

    /**
     * A constructor to stop this class being constructed.
     */
    private SocksCommonUtils() {
        // NOOP
    }

    private static final char ipv6hextetSeparator = ':';

    /**
     * Converts numeric IPv6 to standard (non-compressed) format.
     */
    public static String ipv6toStr(byte[] src) {
        assert src.length == 16;
        StringBuilder sb = new StringBuilder(39);
        ipv6toStr(sb, src, 0, 8);
        return sb.toString();
    }

    private static void ipv6toStr(StringBuilder sb, byte[] src, int fromHextet, int toHextet) {
        int i;
        toHextet --;
        for (i = fromHextet; i < toHextet; i++) {
            appendHextet(sb, src, i);
            sb.append(ipv6hextetSeparator);
        }

        appendHextet(sb, src, i);
    }

    private static void appendHextet(StringBuilder sb, byte[] src, int i) {
        StringUtil.toHexString(sb, src, i << 1, 2);
    }

    static String readUsAscii(ByteBuf buffer, int length) {
        String s = buffer.toString(buffer.readerIndex(), length, CharsetUtil.US_ASCII);
        buffer.skipBytes(length);
        return s;
    }
}