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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.
*/
package org.apache.coyote.http11;
import java.net.Socket;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import javax.management.ObjectName;
import org.apache.coyote.RequestGroupInfo;
import org.apache.coyote.RequestInfo;
import org.apache.juli.logging.Log;
import org.apache.tomcat.util.ExceptionUtils;
import org.apache.tomcat.util.modeler.Registry;
import org.apache.tomcat.util.net.AbstractEndpoint;
import org.apache.tomcat.util.net.JIoEndpoint;
import org.apache.tomcat.util.net.JIoEndpoint.Handler;
import org.apache.tomcat.util.net.SSLImplementation;
import org.apache.tomcat.util.net.SocketStatus;
import org.apache.tomcat.util.net.SocketWrapper;
/**
* Abstract the protocol implementation, including threading, etc.
* Processor is single threaded and specific to stream-based protocols,
* will not fit Jk protocols like JNI.
*
* @author Remy Maucherat
* @author Costin Manolache
*/
public class Http11Protocol extends AbstractHttp11JsseProtocol {
private static final org.apache.juli.logging.Log log
= org.apache.juli.logging.LogFactory.getLog(Http11Protocol.class);
@Override
protected Log getLog() { return log; }
@Override
protected AbstractEndpoint.Handler getHandler() {
return cHandler;
}
// ------------------------------------------------------------ Constructor
public Http11Protocol() {
endpoint = new JIoEndpoint();
cHandler = new Http11ConnectionHandler(this);
((JIoEndpoint) endpoint).setHandler(cHandler);
setSoLinger(Constants.DEFAULT_CONNECTION_LINGER);
setSoTimeout(Constants.DEFAULT_CONNECTION_TIMEOUT);
setTcpNoDelay(Constants.DEFAULT_TCP_NO_DELAY);
setProcessorCache(200);
}
// ----------------------------------------------------------------- Fields
protected Http11ConnectionHandler cHandler;
// ----------------------------------------------------- JMX related methods
@Override
protected String getNamePrefix() {
return ("http-bio");
}
// ----------------------------------- Http11ConnectionHandler Inner Class
protected static class Http11ConnectionHandler implements Handler {
protected Http11Protocol proto;
protected AtomicLong registerCount = new AtomicLong(0);
protected RequestGroupInfo global = new RequestGroupInfo();
protected ConcurrentHashMap, Http11Processor> connections =
new ConcurrentHashMap, Http11Processor>();
protected ConcurrentLinkedQueue recycledProcessors =
new ConcurrentLinkedQueue() {
private static final long serialVersionUID = 1L;
protected AtomicInteger size = new AtomicInteger(0);
@Override
public boolean offer(Http11Processor processor) {
boolean offer = (proto.getProcessorCache() == -1) ? true : (size.get() < proto.getProcessorCache());
//avoid over growing our cache or add after we have stopped
boolean result = false;
if ( offer ) {
result = super.offer(processor);
if ( result ) {
size.incrementAndGet();
}
}
if (!result) unregister(processor);
return result;
}
@Override
public Http11Processor poll() {
Http11Processor result = super.poll();
if ( result != null ) {
size.decrementAndGet();
}
return result;
}
@Override
public void clear() {
Http11Processor next = poll();
while ( next != null ) {
unregister(next);
next = poll();
}
super.clear();
size.set(0);
}
};
Http11ConnectionHandler(Http11Protocol proto) {
this.proto = proto;
}
@Override
public Object getGlobal() {
return global;
}
@Override
public SSLImplementation getSslImplementation() {
return proto.sslImplementation;
}
@Override
public void recycle() {
recycledProcessors.clear();
}
@Override
public SocketState process(SocketWrapper socket) {
return process(socket,SocketStatus.OPEN);
}
@Override
public SocketState process(SocketWrapper socket, SocketStatus status) {
Http11Processor processor = connections.remove(socket);
try {
if (processor == null) {
processor = recycledProcessors.poll();
}
if (processor == null) {
processor = createProcessor();
}
if (proto.isSSLEnabled() && (proto.sslImplementation != null)) {
processor.setSSLSupport(
proto.sslImplementation.getSSLSupport(
socket.getSocket()));
} else {
processor.setSSLSupport(null);
}
SocketState state = socket.isAsync()?processor.asyncDispatch(status):processor.process(socket);
if (state == SocketState.LONG) {
connections.put(socket, processor);
socket.setAsync(true);
// longPoll may change socket state (e.g. to trigger a
// complete or dispatch)
return processor.asyncPostProcess();
} else {
connections.remove(socket);
socket.setAsync(false);
recycledProcessors.offer(processor);
}
return state;
} catch(java.net.SocketException e) {
// SocketExceptions are normal
log.debug(sm.getString(
"http11protocol.proto.socketexception.debug"), e);
} catch (java.io.IOException e) {
// IOExceptions are normal
log.debug(sm.getString(
"http11protocol.proto.ioexception.debug"), e);
}
// Future developers: if you discover any other
// rare-but-nonfatal exceptions, catch them here, and log as
// above.
catch (Throwable e) {
ExceptionUtils.handleThrowable(e);
// any other exception or error is odd. Here we log it
// with "ERROR" level, so it will show up even on
// less-than-verbose logs.
log.error(sm.getString("http11protocol.proto.error"), e);
}
recycledProcessors.offer(processor);
return SocketState.CLOSED;
}
protected Http11Processor createProcessor() {
Http11Processor processor = new Http11Processor(
proto.getMaxHttpHeaderSize(), (JIoEndpoint)proto.endpoint,
proto.getMaxTrailerSize());
processor.setAdapter(proto.adapter);
processor.setMaxKeepAliveRequests(proto.getMaxKeepAliveRequests());
processor.setKeepAliveTimeout(proto.getKeepAliveTimeout());
processor.setConnectionUploadTimeout(
proto.getConnectionUploadTimeout());
processor.setDisableUploadTimeout(proto.getDisableUploadTimeout());
processor.setCompressionMinSize(proto.getCompressionMinSize());
processor.setCompression(proto.getCompression());
processor.setNoCompressionUserAgents(proto.getNoCompressionUserAgents());
processor.setCompressableMimeTypes(proto.getCompressableMimeTypes());
processor.setRestrictedUserAgents(proto.getRestrictedUserAgents());
processor.setSocketBuffer(proto.getSocketBuffer());
processor.setMaxSavePostSize(proto.getMaxSavePostSize());
processor.setServer(proto.getServer());
register(processor);
return processor;
}
protected void register(Http11Processor processor) {
if (proto.getDomain() != null) {
synchronized (this) {
try {
long count = registerCount.incrementAndGet();
final RequestInfo rp = processor.getRequest().getRequestProcessor();
rp.setGlobalProcessor(global);
final ObjectName rpName = new ObjectName
(proto.getDomain() + ":type=RequestProcessor,worker="
+ proto.getName() + ",name=HttpRequest" + count);
if (log.isDebugEnabled()) {
log.debug("Register " + rpName);
}
if (Constants.IS_SECURITY_ENABLED) {
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public Void run() {
try {
Registry.getRegistry(null, null).registerComponent(rp, rpName, null);
} catch (Exception e) {
log.warn("Error registering request");
}
return null;
}
});
} else {
Registry.getRegistry(null, null).registerComponent(rp, rpName, null);
}
rp.setRpName(rpName);
} catch (Exception e) {
log.warn("Error registering request");
}
}
}
}
protected void unregister(Http11Processor processor) {
if (proto.getDomain() != null) {
synchronized (this) {
try {
RequestInfo rp = processor.getRequest().getRequestProcessor();
rp.setGlobalProcessor(null);
ObjectName rpName = rp.getRpName();
if (log.isDebugEnabled()) {
log.debug("Unregister " + rpName);
}
Registry.getRegistry(null, null).unregisterComponent(rpName);
rp.setRpName(null);
} catch (Exception e) {
log.warn("Error unregistering request", e);
}
}
}
}
}
}
