org.smallmind.web.websocket.HandshakeResponse Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of web-websocket Show documentation
Websocket Implementations
There is a newer version: 5.9.0
/*
 * Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 David Berkman
 *
 * This file is part of the SmallMind Code Project.
 *
 * The SmallMind Code Project is free software, you can redistribute
 * it and/or modify it under either, at your discretion...
 *
 * 1) The terms of GNU Affero General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at
 * your option) any later version.
 *
 * ...or...
 *
 * 2) The terms of the Apache License, Version 2.0.
 *
 * The SmallMind Code Project is distributed in the hope that it will
 * be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License or Apache License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * and the Apache License along with the SmallMind Code Project. If not, see
 *  or .
 *
 * Additional permission under the GNU Affero GPL version 3 section 7
 * ------------------------------------------------------------------
 * If you modify this Program, or any covered work, by linking or
 * combining it with other code, such other code is not for that reason
 * alone subject to any of the requirements of the GNU Affero GPL
 * version 3.
 */
package org.smallmind.web.websocket;

import java.util.List;
import javax.websocket.Extension;

public class HandshakeResponse {

  private final Extension[] extensions;
  private final String protocol;

  public HandshakeResponse (String protocol, Extension... extensions) {

    this.protocol = protocol;
    this.extensions = extensions;
  }

  public static String getExtensionsAsString (Extension[] extensions) {

    if ((extensions != null) && (extensions.length > 0)) {

      StringBuilder extensionBuilder = new StringBuilder();
      boolean firstExtension = true;

      for (Extension extension : extensions) {

        List parameterList;

        if (!firstExtension) {
          extensionBuilder.append(", ");
        }
        firstExtension = false;

        extensionBuilder.append(extension.getName());

        if (!(parameterList = extension.getParameters()).isEmpty()) {
          for (Extension.Parameter parameter : parameterList) {
            extensionBuilder.append("; ").append(parameter.getName());
            if ((parameter.getValue() != null) && (!parameter.getValue().isEmpty())) {
              extensionBuilder.append('=').append(parameter.getValue());
            }
          }
        }
      }

      return extensionBuilder.toString();
    }

    return null;
  }

  public String getProtocol () {

    return protocol;
  }

  public Extension[] getExtensions () {

    return extensions;
  }
}