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org.apache.wink.client.internal.handlers.HttpURLConnectionHandler Maven / Gradle / Ivy
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* 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.
*
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package org.apache.wink.client.internal.handlers;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
import java.util.List;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import org.apache.wink.client.ClientConfig;
import org.apache.wink.client.ClientRequest;
import org.apache.wink.client.ClientResponse;
import org.apache.wink.client.handlers.HandlerContext;
import org.apache.wink.client.internal.ClientUtils;
import org.apache.wink.common.internal.WinkConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HttpURLConnectionHandler extends AbstractConnectionHandler {
private static final Logger logger = LoggerFactory.getLogger(HttpURLConnectionHandler.class);
public ClientResponse handle(ClientRequest request, HandlerContext context) throws Exception {
try {
HttpURLConnection connection = processRequest(request, context);
return processResponse(request, context, connection);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private boolean getBypassHostnameVerification(ClientRequest request,
HttpURLConnection connection) {
return ((ClientConfig)request.getAttribute(WinkConfiguration.class))
.getBypassHostnameVerification() && (connection instanceof HttpsURLConnection);
}
private HostnameVerifier setupHostnameVerificationBypass(HttpsURLConnection connection) {
HttpsURLConnection https = ((HttpsURLConnection)connection);
HostnameVerifier hv = https.getHostnameVerifier();
https.setHostnameVerifier(new HostnameVerifier() {
public boolean verify(String urlHostName, SSLSession session) {
logger
.trace("Bypassing hostname verification: URL host is {}, SSLSession host is {}", urlHostName, //$NON-NLS-1$
session.getPeerHost());
return true;
}
});
return hv;
}
private void teardownHostnameVerificationBypass(HttpsURLConnection connection,
HostnameVerifier hv) {
connection.setHostnameVerifier(hv);
}
private HttpURLConnection processRequest(ClientRequest request, HandlerContext context)
throws IOException {
HttpURLConnection connection = openConnection(request);
NonCloseableOutputStream ncos = new NonCloseableOutputStream();
OutputStream os = ncos;
processRequestHeaders(request, connection);
HostnameVerifier hv = null;
if (getBypassHostnameVerification(request, connection)) {
hv = setupHostnameVerificationBypass((HttpsURLConnection)connection);
}
try {
connection.connect();
} finally {
if (getBypassHostnameVerification(request, connection)) {
teardownHostnameVerificationBypass((HttpsURLConnection)connection, hv);
}
}
if (request.getEntity() != null) {
ncos.setOutputStream(connection.getOutputStream());
os = adaptOutputStream(ncos, request, context.getOutputStreamAdapters());
writeEntity(request, os);
}
return connection;
}
private HttpURLConnection openConnection(ClientRequest request) throws IOException {
URL url = request.getURI().toURL();
HttpURLConnection connection = null;
// we're on the client so this is a safe cast
ClientConfig config = (ClientConfig)request.getAttribute(WinkConfiguration.class);
// setup proxy
if (config.getProxyHost() != null) {
Proxy proxy =
new Proxy(Proxy.Type.HTTP, new InetSocketAddress(config.getProxyHost(), config
.getProxyPort()));
connection = (HttpURLConnection)url.openConnection(proxy);
} else {
connection = (HttpURLConnection)url.openConnection();
}
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setRequestMethod(request.getMethod());
connection.setConnectTimeout(config.getConnectTimeout());
connection.setReadTimeout(config.getReadTimeout());
connection.setInstanceFollowRedirects(config.isFollowRedirects());
return connection;
}
private void processRequestHeaders(ClientRequest request, HttpURLConnection connection) {
MultivaluedMap headers = request.getHeaders();
for (String header : headers.keySet()) {
List values = headers.get(header);
for (String value : values) {
if (value != null) {
connection.addRequestProperty(header, value);
}
}
}
/*
* HttpUrlConnection may set an illegal Accept header by default (a
* "*;q=0.2" without a subtytle) so if there wasn't an Accept header,
* then set one here.
*/
if (headers.getFirst(HttpHeaders.ACCEPT) == null) {
connection.addRequestProperty(HttpHeaders.ACCEPT, MediaType.WILDCARD);
}
}
private ClientResponse processResponse(ClientRequest request,
HandlerContext context,
HttpURLConnection connection) throws IOException {
ClientResponse response = createResponse(request, connection);
InputStream is = null;
if (ClientUtils.isErrorCode(response.getStatusCode())) {
is = connection.getErrorStream();
} else {
is = connection.getInputStream();
}
is = adaptInputStream(is, response, context.getInputStreamAdapters());
response.setEntity(is);
return response;
}
private ClientResponse createResponse(ClientRequest request, HttpURLConnection connection)
throws IOException {
HostnameVerifier hv = null;
if (getBypassHostnameVerification(request, connection)) {
hv = setupHostnameVerificationBypass((HttpsURLConnection)connection);
}
ClientResponse response = new ClientResponseImpl();
try {
response.setStatusCode(connection.getResponseCode());
response.setMessage(connection.getResponseMessage());
response.getAttributes().putAll(request.getAttributes());
processResponseHeaders(response, connection);
} finally {
if (getBypassHostnameVerification(request, connection)) {
teardownHostnameVerificationBypass((HttpsURLConnection)connection, hv);
}
}
return response;
}
private void processResponseHeaders(ClientResponse response, HttpURLConnection connection) {
response.getHeaders().putAll(connection.getHeaderFields());
}
private static class NonCloseableOutputStream extends OutputStream {
OutputStream os;
public NonCloseableOutputStream() {
}
public void setOutputStream(OutputStream os) {
this.os = os;
}
@Override
public void close() throws IOException {
// do nothing
}
@Override
public void flush() throws IOException {
os.flush();
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
os.write(b, off, len);
}
@Override
public void write(byte[] b) throws IOException {
os.write(b);
}
@Override
public void write(int b) throws IOException {
os.write(b);
}
}
}
