org.apache.http.impl.execchain.ProtocolExec Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of httpclient Show documentation
Show all versions of httpclient Show documentation
Apache HttpComponents Client
/*
* ====================================================================
* 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
* .
*
*/
package org.apache.http.impl.execchain;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.HttpException;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.ProtocolException;
import org.apache.http.annotation.Immutable;
import org.apache.http.auth.AuthState;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpExecutionAware;
import org.apache.http.client.methods.HttpRequestWrapper;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.params.ClientPNames;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.client.utils.URIUtils;
import org.apache.http.conn.routing.HttpRoute;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.util.Args;
/**
* @since 4.3
*/
@Immutable
@SuppressWarnings("deprecation")
public class ProtocolExec implements ClientExecChain {
private final Log log = LogFactory.getLog(getClass());
private final ClientExecChain requestExecutor;
private final HttpProcessor httpProcessor;
public ProtocolExec(final ClientExecChain requestExecutor, final HttpProcessor httpProcessor) {
Args.notNull(requestExecutor, "HTTP client request executor");
Args.notNull(httpProcessor, "HTTP protocol processor");
this.requestExecutor = requestExecutor;
this.httpProcessor = httpProcessor;
}
private void rewriteRequestURI(final HttpRequestWrapper request, final HttpRoute route)
throws ProtocolException {
try {
URI uri = request.getURI();
if (uri != null) {
if (route.getProxyHost() != null && !route.isTunnelled()) {
// Make sure the request URI is absolute
if (!uri.isAbsolute()) {
final HttpHost target = route.getTargetHost();
uri = URIUtils.rewriteURI(uri, target, true);
} else {
uri = URIUtils.rewriteURI(uri);
}
} else {
// Make sure the request URI is relative
if (uri.isAbsolute()) {
uri = URIUtils.rewriteURI(uri, null, true);
} else {
uri = URIUtils.rewriteURI(uri);
}
}
request.setURI(uri);
}
} catch (final URISyntaxException ex) {
throw new ProtocolException("Invalid URI: " + request.getRequestLine().getUri(), ex);
}
}
public CloseableHttpResponse execute(final HttpRoute route, final HttpRequestWrapper request,
final HttpClientContext context, final HttpExecutionAware execAware) throws IOException,
HttpException {
Args.notNull(route, "HTTP route");
Args.notNull(request, "HTTP request");
Args.notNull(context, "HTTP context");
// Get user info from the URI
final AuthState targetAuthState = context.getTargetAuthState();
if (targetAuthState != null) {
final URI requestURI = request.getURI();
if (requestURI != null) {
final String userinfo = requestURI.getUserInfo();
if (userinfo != null) {
targetAuthState.update(new BasicScheme(), new UsernamePasswordCredentials(
userinfo));
}
}
}
// Re-write request URI if needed
rewriteRequestURI(request, route);
final HttpParams params = request.getParams();
HttpHost virtualHost = (HttpHost) params.getParameter(ClientPNames.VIRTUAL_HOST);
// HTTPCLIENT-1092 - add the port if necessary
if (virtualHost != null && virtualHost.getPort() == -1) {
final int port = route.getTargetHost().getPort();
if (port != -1) {
virtualHost = new HttpHost(virtualHost.getHostName(), port,
virtualHost.getSchemeName());
}
if (this.log.isDebugEnabled()) {
this.log.debug("Using virtual host" + virtualHost);
}
}
HttpHost target = null;
if (virtualHost != null) {
target = virtualHost;
} else {
final HttpRequest original = request.getOriginal();
URI uri = null;
if (original instanceof HttpUriRequest) {
uri = ((HttpUriRequest) original).getURI();
} else {
final String uriString = original.getRequestLine().getUri();
try {
uri = URI.create(uriString);
} catch (final IllegalArgumentException ex) {
if (this.log.isDebugEnabled()) {
this.log.debug("Unable to parse '" + uriString + "' as a valid URI; " +
"request URI and Host header may be inconsistent", ex);
}
}
}
if (uri != null && uri.isAbsolute() && uri.getHost() != null) {
target = new HttpHost(uri.getHost(), uri.getPort(), uri.getScheme());
}
}
if (target == null) {
target = route.getTargetHost();
}
// Run request protocol interceptors
context.setAttribute(ExecutionContext.HTTP_TARGET_HOST, target);
context.setAttribute(ClientContext.ROUTE, route);
context.setAttribute(ExecutionContext.HTTP_REQUEST, request);
this.httpProcessor.process(request, context);
final CloseableHttpResponse response = this.requestExecutor.execute(route, request,
context, execAware);
try {
// Run response protocol interceptors
context.setAttribute(ExecutionContext.HTTP_RESPONSE, response);
this.httpProcessor.process(response, context);
return response;
} catch (final RuntimeException ex) {
response.close();
throw ex;
} catch (final IOException ex) {
response.close();
throw ex;
} catch (final HttpException ex) {
response.close();
throw ex;
}
}
}