/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF 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
   *
   *   http://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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.http.impl.nio;
  
  import javax.net.ssl.SSLContext;
  
  import org.apache.http.HttpHost;
  import org.apache.http.HttpRequest;
  import org.apache.http.HttpResponse;
  import org.apache.http.HttpResponseFactory;
  import org.apache.http.annotation.Contract;
  import org.apache.http.annotation.ThreadingBehavior;
  import org.apache.http.config.ConnectionConfig;
  import org.apache.http.entity.ContentLengthStrategy;
  import org.apache.http.impl.ConnSupport;
  import org.apache.http.impl.DefaultHttpResponseFactory;
  import org.apache.http.impl.nio.codecs.DefaultHttpResponseParserFactory;
  import org.apache.http.nio.NHttpConnectionFactory;
  import org.apache.http.nio.NHttpMessageParserFactory;
  import org.apache.http.nio.NHttpMessageWriterFactory;
  import org.apache.http.nio.reactor.IOSession;
  import org.apache.http.nio.reactor.ssl.SSLIOSession;
  import org.apache.http.nio.reactor.ssl.SSLMode;
  import org.apache.http.nio.reactor.ssl.SSLSetupHandler;
  import org.apache.http.nio.util.ByteBufferAllocator;
  import org.apache.http.nio.util.HeapByteBufferAllocator;
  import org.apache.http.params.HttpParamConfig;
  import org.apache.http.params.HttpParams;
  import org.apache.http.ssl.SSLContexts;
  import org.apache.http.util.Args;
  
  /**
   * Default factory for SSL encrypted, non-blocking
   * {@link org.apache.http.nio.NHttpClientConnection}s.
   *
   * @since 4.2
   */
  @SuppressWarnings("deprecation")
  @Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
  public class SSLNHttpClientConnectionFactory
      implements NHttpConnectionFactory<DefaultNHttpClientConnection> {
  
      public static final SSLNHttpClientConnectionFactorytory.html#SSLNHttpClientConnectionFactory">SSLNHttpClientConnectionFactory INSTANCE = new SSLNHttpClientConnectionFactory();
  
      private final ContentLengthStrategy incomingContentStrategy;
      private final ContentLengthStrategy outgoingContentStrategy;
      private final NHttpMessageParserFactory<HttpResponse> responseParserFactory;
      private final NHttpMessageWriterFactory<HttpRequest> requestWriterFactory;
      private final ByteBufferAllocator allocator;
      private final SSLContext sslContext;
      private final SSLSetupHandler sslHandler;
      private final ConnectionConfig cconfig;
  
      /**
       * @deprecated (4.3) use {@link
       *   SSLNHttpClientConnectionFactory#SSLNHttpClientConnectionFactory(SSLContext,
       *      SSLSetupHandler, NHttpMessageParserFactory, NHttpMessageWriterFactory,
       *      ByteBufferAllocator, ConnectionConfig)}
       */
      @Deprecated
      public SSLNHttpClientConnectionFactory(
              final SSLContext sslContext,
              final SSLSetupHandler sslHandler,
              final HttpResponseFactory responseFactory,
              final ByteBufferAllocator allocator,
              final HttpParams params) {
          super();
          Args.notNull(responseFactory, "HTTP response factory");
          Args.notNull(allocator, "Byte buffer allocator");
          Args.notNull(params, "HTTP parameters");
          this.sslContext = sslContext != null ? sslContext : SSLContexts.createSystemDefault();
          this.sslHandler = sslHandler;
          this.allocator = allocator;
          this.incomingContentStrategy = null;
          this.outgoingContentStrategy = null;
         this.responseParserFactory = new DefaultHttpResponseParserFactory(null, responseFactory);
         this.requestWriterFactory = null;
         this.cconfig = HttpParamConfig.getConnectionConfig(params);
     }
 
     /**
      * @deprecated (4.3) use {@link
      *   SSLNHttpClientConnectionFactory#SSLNHttpClientConnectionFactory(SSLContext,
      *     SSLSetupHandler, ConnectionConfig)}
      */
     @Deprecated
     public SSLNHttpClientConnectionFactory(
             final SSLContext sslContext,
             final SSLSetupHandler sslHandler,
             final HttpParams params) {
         this(sslContext, sslHandler, DefaultHttpResponseFactory.INSTANCE,
                 HeapByteBufferAllocator.INSTANCE, params);
     }
 
     /**
      * @deprecated (4.3) use {@link
      *   SSLNHttpClientConnectionFactory#SSLNHttpClientConnectionFactory(ConnectionConfig)}
      */
     @Deprecated
     public SSLNHttpClientConnectionFactory(final HttpParams params) {
         this(null, null, params);
     }
 
     /**
      * @since 4.3
      */
     public SSLNHttpClientConnectionFactory(
             final SSLContext sslContext,
             final SSLSetupHandler sslHandler,
             final ContentLengthStrategy incomingContentStrategy,
             final ContentLengthStrategy outgoingContentStrategy,
             final NHttpMessageParserFactory<HttpResponse> responseParserFactory,
             final NHttpMessageWriterFactory<HttpRequest> requestWriterFactory,
             final ByteBufferAllocator allocator,
             final ConnectionConfig cconfig) {
         super();
         this.sslContext = sslContext != null ? sslContext : SSLContexts.createSystemDefault();
         this.sslHandler = sslHandler;
         this.incomingContentStrategy = incomingContentStrategy;
         this.outgoingContentStrategy = outgoingContentStrategy;
         this.responseParserFactory = responseParserFactory;
         this.requestWriterFactory = requestWriterFactory;
         this.allocator = allocator;
         this.cconfig = cconfig != null ? cconfig : ConnectionConfig.DEFAULT;
     }
 
     /**
      * @since 4.3
      */
     public SSLNHttpClientConnectionFactory(
             final SSLContext sslContext,
             final SSLSetupHandler sslHandler,
             final NHttpMessageParserFactory<HttpResponse> responseParserFactory,
             final NHttpMessageWriterFactory<HttpRequest> requestWriterFactory,
             final ByteBufferAllocator allocator,
             final ConnectionConfig cconfig) {
         this(sslContext, sslHandler,
                 null, null, responseParserFactory, requestWriterFactory, allocator, cconfig);
     }
 
     /**
      * @since 4.3
      */
     public SSLNHttpClientConnectionFactory(
             final SSLContext sslContext,
             final SSLSetupHandler sslHandler,
             final NHttpMessageParserFactory<HttpResponse> responseParserFactory,
             final NHttpMessageWriterFactory<HttpRequest> requestWriterFactory,
             final ConnectionConfig cconfig) {
         this(sslContext, sslHandler,
                 null, null, responseParserFactory, requestWriterFactory, null, cconfig);
     }
 
     /**
      * @since 4.3
      */
     public SSLNHttpClientConnectionFactory(
             final SSLContext sslContext,
             final SSLSetupHandler sslHandler,
             final ConnectionConfig config) {
         this(sslContext, sslHandler, null, null, null, null, null, config);
     }
 
     /**
      * @since 4.3
      */
     public SSLNHttpClientConnectionFactory(final ConnectionConfig config) {
         this(null, null, null, null, null, null, null, config);
     }
 
     /**
      * @since 4.3
      */
     public SSLNHttpClientConnectionFactory() {
         this(null, null, null, null, null, null);
     }
 
     /**
      * @deprecated (4.3) no longer used.
      */
     @Deprecated
     protected DefaultNHttpClientConnection createConnection(
             final IOSession session,
             final HttpResponseFactory responseFactory,
             final ByteBufferAllocator allocator,
             final HttpParams params) {
         return new DefaultNHttpClientConnection(session, responseFactory, allocator, params);
     }
 
     /**
      * @since 4.3
      */
     protected SSLIOSession createSSLIOSession(
             final IOSession ioSession,
             final SSLContext sslContext,
             final SSLSetupHandler sslHandler) {
         final Object attachment = ioSession.getAttribute(IOSession.ATTACHMENT_KEY);
         return new SSLIOSession(ioSession, SSLMode.CLIENT,
                 attachment instanceof HttpHost ? (HttpHost) attachment : null,
                 sslContext, sslHandler);
     }
 
     @Override
     public DefaultNHttpClientConnection createConnection(final IOSession ioSession) {
         final SSLIOSession sslioSession = createSSLIOSession(ioSession, this.sslContext, this.sslHandler);
         ioSession.setAttribute(SSLIOSession.SESSION_KEY, sslioSession);
         return new DefaultNHttpClientConnection(
                 sslioSession,
                 this.cconfig.getBufferSize(),
                 this.cconfig.getFragmentSizeHint(),
                 this.allocator,
                 ConnSupport.createDecoder(this.cconfig),
                 ConnSupport.createEncoder(this.cconfig),
                 this.cconfig.getMessageConstraints(),
                 this.incomingContentStrategy,
                 this.outgoingContentStrategy,
                 this.requestWriterFactory,
                 this.responseParserFactory);
     }
 
 }