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-rw-r--r--src/org/apache/http/impl/AbstractHttpClientConnection.java212
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diff --git a/src/org/apache/http/impl/AbstractHttpClientConnection.java b/src/org/apache/http/impl/AbstractHttpClientConnection.java
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-/*
- * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/impl/AbstractHttpClientConnection.java $
- * $Revision: 627457 $
- * $Date: 2008-02-13 07:14:19 -0800 (Wed, 13 Feb 2008) $
- *
- * ====================================================================
- * 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;
-
-import java.io.IOException;
-
-import org.apache.http.HttpClientConnection;
-import org.apache.http.HttpConnectionMetrics;
-import org.apache.http.HttpEntity;
-import org.apache.http.HttpEntityEnclosingRequest;
-import org.apache.http.HttpException;
-import org.apache.http.HttpRequest;
-import org.apache.http.HttpResponse;
-import org.apache.http.HttpResponseFactory;
-import org.apache.http.impl.entity.EntityDeserializer;
-import org.apache.http.impl.entity.EntitySerializer;
-import org.apache.http.impl.entity.LaxContentLengthStrategy;
-import org.apache.http.impl.entity.StrictContentLengthStrategy;
-import org.apache.http.impl.io.HttpRequestWriter;
-import org.apache.http.impl.io.HttpResponseParser;
-import org.apache.http.io.HttpMessageParser;
-import org.apache.http.io.HttpMessageWriter;
-import org.apache.http.io.SessionInputBuffer;
-import org.apache.http.io.SessionOutputBuffer;
-import org.apache.http.params.HttpParams;
-
-/**
- * Abstract client-side HTTP connection capable of transmitting and receiving data
- * using arbitrary {@link SessionInputBuffer} and {@link SessionOutputBuffer}
- *
- * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
- *
- * @version $Revision: 627457 $
- *
- * @since 4.0
- */
-public abstract class AbstractHttpClientConnection implements HttpClientConnection {
-
- private final EntitySerializer entityserializer;
- private final EntityDeserializer entitydeserializer;
-
- private SessionInputBuffer inbuffer = null;
- private SessionOutputBuffer outbuffer = null;
- private HttpMessageParser responseParser = null;
- private HttpMessageWriter requestWriter = null;
- private HttpConnectionMetricsImpl metrics = null;
-
-
-
- public AbstractHttpClientConnection() {
- super();
- this.entityserializer = createEntitySerializer();
- this.entitydeserializer = createEntityDeserializer();
- }
-
- protected abstract void assertOpen() throws IllegalStateException;
-
- protected EntityDeserializer createEntityDeserializer() {
- return new EntityDeserializer(new LaxContentLengthStrategy());
- }
-
- protected EntitySerializer createEntitySerializer() {
- return new EntitySerializer(new StrictContentLengthStrategy());
- }
-
- protected HttpResponseFactory createHttpResponseFactory() {
- return new DefaultHttpResponseFactory();
- }
-
- protected HttpMessageParser createResponseParser(
- final SessionInputBuffer buffer,
- final HttpResponseFactory responseFactory,
- final HttpParams params) {
- // override in derived class to specify a line parser
- return new HttpResponseParser(buffer, null, responseFactory, params);
- }
-
- protected HttpMessageWriter createRequestWriter(
- final SessionOutputBuffer buffer,
- final HttpParams params) {
- // override in derived class to specify a line formatter
- return new HttpRequestWriter(buffer, null, params);
- }
-
- protected void init(
- final SessionInputBuffer inbuffer,
- final SessionOutputBuffer outbuffer,
- final HttpParams params) {
- if (inbuffer == null) {
- throw new IllegalArgumentException("Input session buffer may not be null");
- }
- if (outbuffer == null) {
- throw new IllegalArgumentException("Output session buffer may not be null");
- }
- this.inbuffer = inbuffer;
- this.outbuffer = outbuffer;
- this.responseParser = createResponseParser(
- inbuffer,
- createHttpResponseFactory(),
- params);
- this.requestWriter = createRequestWriter(
- outbuffer, params);
- this.metrics = new HttpConnectionMetricsImpl(
- inbuffer.getMetrics(),
- outbuffer.getMetrics());
- }
-
- public boolean isResponseAvailable(int timeout) throws IOException {
- assertOpen();
- return this.inbuffer.isDataAvailable(timeout);
- }
-
- public void sendRequestHeader(final HttpRequest request)
- throws HttpException, IOException {
- if (request == null) {
- throw new IllegalArgumentException("HTTP request may not be null");
- }
- assertOpen();
- this.requestWriter.write(request);
- this.metrics.incrementRequestCount();
- }
-
- public void sendRequestEntity(final HttpEntityEnclosingRequest request)
- throws HttpException, IOException {
- if (request == null) {
- throw new IllegalArgumentException("HTTP request may not be null");
- }
- assertOpen();
- if (request.getEntity() == null) {
- return;
- }
- this.entityserializer.serialize(
- this.outbuffer,
- request,
- request.getEntity());
- }
-
- protected void doFlush() throws IOException {
- this.outbuffer.flush();
- }
-
- public void flush() throws IOException {
- assertOpen();
- doFlush();
- }
-
- public HttpResponse receiveResponseHeader()
- throws HttpException, IOException {
- assertOpen();
- HttpResponse response = (HttpResponse) this.responseParser.parse();
- if (response.getStatusLine().getStatusCode() >= 200) {
- this.metrics.incrementResponseCount();
- }
- return response;
- }
-
- public void receiveResponseEntity(final HttpResponse response)
- throws HttpException, IOException {
- if (response == null) {
- throw new IllegalArgumentException("HTTP response may not be null");
- }
- assertOpen();
- HttpEntity entity = this.entitydeserializer.deserialize(this.inbuffer, response);
- response.setEntity(entity);
- }
-
- public boolean isStale() {
- if (!isOpen()) {
- return true;
- }
- try {
- this.inbuffer.isDataAvailable(1);
- return false;
- } catch (IOException ex) {
- return true;
- }
- }
-
- public HttpConnectionMetrics getMetrics() {
- return this.metrics;
- }
-
-}