SmtpRequests.java — netty Source File

Source Code

/*
 * Copyright 2016 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.smtp;

import io.netty.util.AsciiString;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.UnstableApi;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Provides utility methods to create {@link SmtpRequest}s.
 */
@UnstableApi
public final class SmtpRequests {

    private static final SmtpRequest DATA = new DefaultSmtpRequest(SmtpCommand.DATA);
    private static final SmtpRequest NOOP = new DefaultSmtpRequest(SmtpCommand.NOOP);
    private static final SmtpRequest RSET = new DefaultSmtpRequest(SmtpCommand.RSET);
    private static final SmtpRequest HELP_NO_ARG = new DefaultSmtpRequest(SmtpCommand.HELP);
    private static final SmtpRequest QUIT = new DefaultSmtpRequest(SmtpCommand.QUIT);
    private static final AsciiString FROM_NULL_SENDER = AsciiString.cached("FROM:<>");

    /**
     * Creates a {@code HELO} request.
     */
    public static SmtpRequest helo(CharSequence hostname) {
        return new DefaultSmtpRequest(SmtpCommand.HELO, hostname);
    }

    /**
     * Creates a {@code EHLO} request.
     */
    public static SmtpRequest ehlo(CharSequence hostname) {
        return new DefaultSmtpRequest(SmtpCommand.EHLO, hostname);
    }

    /**
     * Creates a {@code EMPTY} request.
     */
    public static SmtpRequest empty(CharSequence... parameter) {
        return new DefaultSmtpRequest(SmtpCommand.EMPTY, parameter);
    }

    /**
// ... (88 more lines)