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Ant Media Server supports RTMP, RTSP, MP4, HLS, WebRTC, Adaptive Streaming, etc.
/*
* RED5 Open Source Media Server - https://github.com/Red5/
*
* Copyright 2006-2016 by respective authors (see below). All rights reserved.
*
* Licensed 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.red5.server.net.rtmp;
import java.lang.management.ManagementFactory;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import javax.management.JMX;
import javax.management.ObjectName;
import org.apache.mina.core.session.IoSession;
import org.red5.server.api.Red5;
import org.red5.server.api.scope.IBasicScope;
import org.red5.server.jmx.mxbeans.RTMPMinaTransportMXBean;
import org.red5.server.net.IConnectionManager;
import org.red5.server.net.rtmp.codec.RTMP;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.scheduling.concurrent.CustomizableThreadFactory;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
/**
* Responsible for management and creation of RTMP based connections.
*
* @author The Red5 Project
*/
public class RTMPConnManager implements IConnectionManager, ApplicationContextAware, DisposableBean {
private static final Logger log = LoggerFactory.getLogger(RTMPConnManager.class);
protected static ApplicationContext applicationContext;
private ScheduledExecutorService executor = Executors.newScheduledThreadPool(1, new CustomizableThreadFactory("ConnectionChecker-"));
protected ConcurrentMap connMap = new ConcurrentHashMap();
protected AtomicInteger conns = new AtomicInteger();
protected static IConnectionManager instance;
protected boolean debug;
{
// create a scheduled job to check for dead or hung connections
executor.scheduleAtFixedRate(new Runnable() {
public void run() {
// count the connections that need closing
int closedConnections = 0;
// get all the current connections
Collection allConns = getAllConnections();
log.debug("Checking {} connections", allConns.size());
for (RTMPConnection conn : allConns) {
if (log.isTraceEnabled()) {
log.trace("{} session: {} state: {} keep-alive running: {}", new Object[] { conn.getClass().getSimpleName(), conn.getSessionId(), RTMP.states[conn.getStateCode()], conn.running });
log.trace("Decoder lock - permits: {} queue length: {}", conn.decoderLock.availablePermits(), conn.decoderLock.getQueueLength());
log.trace("Encoder lock - permits: {} queue length: {}", conn.encoderLock.availablePermits(), conn.encoderLock.getQueueLength());
log.trace("Client streams: {} used: {}", conn.getStreams().size(), conn.getUsedStreamCount());
if (!conn.getAttributes().isEmpty()) {
log.trace("Attributes: {}", conn.getAttributes());
}
Iterator scopes = conn.getBasicScopes();
while (scopes.hasNext()) {
IBasicScope scope = scopes.next();
log.trace("Scope: {}", scope);
}
}
String sessionId = conn.getSessionId();
RTMP rtmp = conn.getState();
switch (rtmp.getState()) {
case RTMP.STATE_DISCONNECTED:
case RTMP.STATE_DISCONNECTING:
removeConnection(sessionId);
break;
default:
// XXX implement as a task and fix logic
// ghost clean up
// if (max time allowed for no response from client exceeded, ping)
// // Ping client
// conn.ping();
// // FIXME: getLastPingTime doesn't get updated right after ping
// // wait x time for lastPingTime and if exceeded, disconnect
// if (conn.getLastPingTime() > clientTTL * 1000) {
// log.info("TTL exceeded, disconnecting {}", conn);
// conn.close();
// }
// }
long ioTime = 0L;
IoSession session = conn.getIoSession();
if (conn instanceof RTMPMinaConnection) {
// get io time
ioTime = System.currentTimeMillis() - session.getLastIoTime();
if (log.isTraceEnabled()) {
log.trace("Session - write queue: {} session count: {}", session.getWriteRequestQueue().size(), session.getService().getManagedSessionCount());
}
}
if (log.isDebugEnabled()) {
log.debug("Session last io time: {} ms", ioTime);
}
// if exceeds max inactivity kill and clean up
if (ioTime >= conn.maxInactivity) {
log.warn("Connection {} has exceeded the max inactivity threshold of {} ms", conn.getSessionId(), conn.maxInactivity);
if (session != null) {
if (log.isDebugEnabled()) {
log.debug("Prepared to clear write queue, if session is connected: {}; closing? {}", session.isConnected(), session.isClosing());
}
if (session.isConnected()) {
// clear the write queue
session.getWriteRequestQueue().clear(session);
}
}
// call onInactive on the connection, this should cleanly close everything out
conn.onInactive();
if (!conn.isClosed()) {
log.debug("Connection {} is not closed", conn.getSessionId());
} else {
closedConnections++;
}
}
}
}
// if there is more than one connection that needed to be closed, request a GC to clean up memory.
if (closedConnections > 0) {
System.gc();
}
}
}, 7000, 30000, TimeUnit.MILLISECONDS);
}
public static IConnectionManager getInstance() {
if (instance == null) {
log.trace("Connection manager instance does not exist");
if (applicationContext != null && applicationContext.containsBean("rtmpConnManager")) {
log.trace("Connection manager bean exists");
instance = (RTMPConnManager) applicationContext.getBean("rtmpConnManager");
} else {
log.trace("Connection manager bean doesnt exist, creating new instance");
instance = new RTMPConnManager();
}
}
return instance;
}
/** {@inheritDoc} */
public RTMPConnection createConnection(Class connCls) {
RTMPConnection conn = null;
if (RTMPConnection.class.isAssignableFrom(connCls)) {
try {
// create connection
conn = createConnectionInstance(connCls);
// add to local map
connMap.put(conn.getSessionId(), conn);
log.trace("Connections: {}", conns.incrementAndGet());
// set the scheduler
if (applicationContext.containsBean("rtmpScheduler") && conn.getScheduler() == null) {
conn.setScheduler((ThreadPoolTaskScheduler) applicationContext.getBean("rtmpScheduler"));
}
log.trace("Connection created: {}", conn);
} catch (Exception ex) {
log.warn("Exception creating connection", ex);
}
}
return conn;
}
/** {@inheritDoc} */
public RTMPConnection createConnection(Class connCls, String sessionId) {
throw new UnsupportedOperationException("Not implemented");
}
/**
* Adds a connection.
*
* @param conn
* connection
*/
public void setConnection(RTMPConnection conn) {
log.trace("Adding connection: {}", conn);
int id = conn.getId();
if (id == -1) {
log.debug("Connection has unsupported id, using session id hash");
id = conn.getSessionId().hashCode();
}
log.debug("Connection id: {} session id hash: {}", conn.getId(), conn.getSessionId().hashCode());
if (debug) {
log.info("Connection count (map): {}", connMap.size());
try {
RTMPMinaTransportMXBean proxy = JMX.newMXBeanProxy(ManagementFactory.getPlatformMBeanServer(), new ObjectName("org.red5.server:type=RTMPMinaTransport"), RTMPMinaTransportMXBean.class, true);
if (proxy != null) {
log.info("{}", proxy.getStatistics());
}
} catch (Exception e) {
log.warn("Error on jmx lookup", e);
}
}
}
/**
* Returns a connection for a given client id.
*
* @param clientId
* client id
* @return connection if found and null otherwise
*/
public RTMPConnection getConnection(int clientId) {
log.trace("Getting connection by client id: {}", clientId);
for (RTMPConnection conn : connMap.values()) {
if (conn.getId() == clientId) {
return connMap.get(conn.getSessionId());
}
}
return null;
}
/**
* Returns a connection for a given session id.
*
* @param sessionId session id
* @return connection if found and null otherwise
*/
public RTMPConnection getConnectionBySessionId(String sessionId) {
log.trace("Getting connection by session id: {}", sessionId);
RTMPConnection conn = connMap.get(sessionId);
if (conn == null && log.isDebugEnabled()) {
log.debug("Connection not found for {}", sessionId);
if (log.isTraceEnabled()) {
log.trace("Connections ({}) {}", connMap.size(), connMap.values());
}
}
return conn;
}
/** {@inheritDoc} */
public RTMPConnection removeConnection(int clientId) {
log.trace("Removing connection with id: {}", clientId);
// remove from map
for (RTMPConnection conn : connMap.values()) {
if (conn.getId() == clientId) {
// remove the conn
return removeConnection(conn.getSessionId());
}
}
log.warn("Connection was not removed by id: {}", clientId);
return null;
}
/** {@inheritDoc} */
public RTMPConnection removeConnection(String sessionId) {
log.trace("Removing connection with session id: {}", sessionId);
if (log.isTraceEnabled()) {
log.trace("Connections ({}) at pre-remove: {}", connMap.size(), connMap.values());
}
// remove from map
RTMPConnection conn = connMap.remove(sessionId);
if (conn != null) {
log.trace("Connections: {}", conns.decrementAndGet());
Red5.setConnectionLocal(null);
}
return conn;
}
/** {@inheritDoc} */
public Collection getAllConnections() {
ArrayList list = new ArrayList(connMap.size());
list.addAll(connMap.values());
return list;
}
/** {@inheritDoc} */
public Collection removeConnections() {
ArrayList list = new ArrayList(connMap.size());
list.addAll(connMap.values());
connMap.clear();
conns.set(0);
return list;
}
/**
* Creates a connection instance based on the supplied type.
*
* @param cls
* class
* @return connection
* @throws Exception
* on error
*/
public RTMPConnection createConnectionInstance(Class cls) throws Exception {
RTMPConnection conn = null;
if (cls == RTMPMinaConnection.class)
{
conn = (RTMPMinaConnection) applicationContext.getBean(RTMPMinaConnection.class);
}
else {
conn = (RTMPConnection) cls.newInstance();
}
return conn;
}
/**
* @param debug
* the debug to set
*/
public void setDebug(boolean debug) {
this.debug = debug;
}
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
RTMPConnManager.applicationContext = applicationContext;
}
public void destroy() throws Exception {
executor.shutdownNow();
}
}