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/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY. NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
package gov.nist.javax.sip.stack;
import gov.nist.core.CommonLogger;
import gov.nist.core.InternalErrorHandler;
import gov.nist.core.LogWriter;
import gov.nist.core.NameValueList;
import gov.nist.core.StackLogger;
import gov.nist.javax.sip.ReleaseReferencesStrategy;
import gov.nist.javax.sip.SIPConstants;
import gov.nist.javax.sip.SipProviderImpl;
import gov.nist.javax.sip.SipStackImpl;
import gov.nist.javax.sip.Utils;
import gov.nist.javax.sip.address.AddressImpl;
import gov.nist.javax.sip.header.Contact;
import gov.nist.javax.sip.header.Event;
import gov.nist.javax.sip.header.Expires;
import gov.nist.javax.sip.header.RecordRoute;
import gov.nist.javax.sip.header.RecordRouteList;
import gov.nist.javax.sip.header.Route;
import gov.nist.javax.sip.header.RouteList;
import gov.nist.javax.sip.header.TimeStamp;
import gov.nist.javax.sip.header.To;
import gov.nist.javax.sip.header.Via;
import gov.nist.javax.sip.message.SIPMessage;
import gov.nist.javax.sip.message.SIPRequest;
import gov.nist.javax.sip.message.SIPResponse;
import gov.nist.javax.sip.stack.IllegalTransactionStateException.Reason;
import javax.sip.Dialog;
import javax.sip.DialogState;
import javax.sip.InvalidArgumentException;
import javax.sip.SipException;
import javax.sip.Timeout;
import javax.sip.TimeoutEvent;
import javax.sip.TransactionState;
import javax.sip.address.Hop;
import javax.sip.address.SipURI;
import javax.sip.header.EventHeader;
import javax.sip.header.ExpiresHeader;
import javax.sip.header.RouteHeader;
import javax.sip.header.TimeStampHeader;
import javax.sip.message.Request;
import java.io.IOException;
import java.text.ParseException;
import java.util.ListIterator;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.concurrent.atomic.AtomicBoolean;
/*
* Jeff Keyser -- initial. Daniel J. Martinez Manzano --Added support for TLS message channel.
* Emil Ivov -- bug fixes. Chris Beardshear -- bug fix. Andreas Bystrom -- bug fixes. Matt Keller
* (Motorolla) -- bug fix.
*/
/**
* Represents a client transaction. Implements the following state machines. (From RFC 3261)
*
*
*
*
*
*
*
*
* |INVITE from TU
* Timer A fires |INVITE sent
* Reset A, V Timer B fires
* INVITE sent +-----------+ or Transport Err.
* +---------| |---------------+inform TU
* | | Calling | |
* +-------->| |-------------->|
* +-----------+ 2xx |
* | | 2xx to TU |
* | |1xx |
* 300-699 +---------------+ |1xx to TU |
* ACK sent | | |
* resp. to TU | 1xx V |
* | 1xx to TU -----------+ |
* | +---------| | |
* | | |Proceeding |-------------->|
* | +-------->| | 2xx |
* | +-----------+ 2xx to TU |
* | 300-699 | |
* | ACK sent, | |
* | resp. to TU| |
* | | | NOTE:
* | 300-699 V |
* | ACK sent +-----------+Transport Err. | transitions
* | +---------| |Inform TU | labeled with
* | | | Completed |-------------->| the event
* | +-------->| | | over the action
* | +-----------+ | to take
* | ˆ | |
* | | | Timer D fires |
* +--------------+ | - |
* | |
* V |
* +-----------+ |
* | | |
* | Terminated|<--------------+
* | |
* +-----------+
*
* Figure 5: INVITE client transaction
*
*
* |Request from TU
* |send request
* Timer E V
* send request +-----------+
* +---------| |-------------------+
* | | Trying | Timer F |
* +-------->| | or Transport Err.|
* +-----------+ inform TU |
* 200-699 | | |
* resp. to TU | |1xx |
* +---------------+ |resp. to TU |
* | | |
* | Timer E V Timer F |
* | send req +-----------+ or Transport Err. |
* | +---------| | inform TU |
* | | |Proceeding |------------------>|
* | +-------->| |-----+ |
* | +-----------+ |1xx |
* | | ˆ |resp to TU |
* | 200-699 | +--------+ |
* | resp. to TU | |
* | | |
* | V |
* | +-----------+ |
* | | | |
* | | Completed | |
* | | | |
* | +-----------+ |
* | ˆ | |
* | | | Timer K |
* +--------------+ | - |
* | |
* V |
* NOTE: +-----------+ |
* | | |
* transitions | Terminated|<------------------+
* labeled with | |
* the event +-----------+
* over the action
* to take
*
* Figure 6: non-INVITE client transaction
*
*
*
*
*
*
*
*
*
* @author M. Ranganathan
*
* @version 1.2 $Revision: 1.144 $ $Date: 2010-12-02 22:04:16 $
*/
public class SIPClientTransactionImpl extends SIPTransactionImpl implements SIPClientTransaction {
private static StackLogger logger = CommonLogger.getLogger(SIPClientTransaction.class);
// a SIP Client transaction may belong simultaneously to multiple
// dialogs in the early state. These dialogs all have
// the same call ID and same From tag but different to tags.
// jeand : we don't keep the ref to the dialogs but only to their id to save on memory
private Set sipDialogs;
private SIPRequest lastRequest;
private int viaPort;
private String viaHost;
// Real ResponseInterface to pass messages to
private transient ServerResponseInterface respondTo;
// jeand: ref to the default dialog id to allow nullying the ref to the dialog quickly
// and thus saving on mem
private String defaultDialogId;
private SIPDialog defaultDialog;
private Hop nextHop;
private boolean notifyOnRetransmit;
private boolean timeoutIfStillInCallingState;
private int callingStateTimeoutCount;
private transient SIPStackTimerTask transactionTimer;
// jeand/ avoid keeping the full Original Request in memory
private String originalRequestFromTag;
private String originalRequestCallId;
private Event originalRequestEventHeader;
private Contact originalRequestContact;
private String originalRequestScheme;
private transient Object transactionTimerLock = new Object();
private AtomicBoolean timerKStarted = new AtomicBoolean(false);
private boolean transactionTimerCancelled = false;
private Set responsesReceived = new CopyOnWriteArraySet();
private boolean terminateDialogOnCleanUp = true;
public class TransactionTimer extends SIPStackTimerTask {
public TransactionTimer() {
}
public void runTask() {
// If the transaction has terminated,
if (isTerminated()) {
try {
sipStack.getTimer().cancel(this);
} catch (IllegalStateException ex) {
if (!sipStack.isAlive())
return;
}
cleanUpOnTerminated();
} else {
// If this transaction has not
// terminated,
// Fire the transaction timer.
fireTimer();
}
}
@Override
public Object getThreadHash() {
Request request = getRequest();
if (request != null && request instanceof SIPRequest) {
return ((SIPRequest)request).getCallIdHeader().getCallId();
} else {
return null;
}
}
}
class ExpiresTimerTask extends SIPStackTimerTask {
public ExpiresTimerTask() {
}
@Override
public void runTask() {
SIPClientTransaction ct = SIPClientTransactionImpl.this;
SipProviderImpl provider = ct.getSipProvider();
if (ct.getState() != TransactionState.TERMINATED) {
TimeoutEvent tte = new TimeoutEvent(provider, ct, Timeout.TRANSACTION);
provider.handleEvent(tte, ct);
} else {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("state = " + ct.getState());
}
}
}
@Override
public Object getThreadHash() {
Request request = getRequest();
if (request != null && request instanceof SIPRequest) {
return ((SIPRequest)request).getCallIdHeader().getCallId();
} else {
return null;
}
}
}
/**
* Creates a new client transaction.
*
* @param newSIPStack Transaction stack this transaction belongs to.
* @param newChannelToUse Channel to encapsulate.
* @return the created client transaction.
*/
protected SIPClientTransactionImpl(SIPTransactionStack newSIPStack, MessageChannel newChannelToUse)
{
super(newSIPStack, newChannelToUse);
// Create a random branch parameter for this transaction
setBranch(Utils.getInstance().generateBranchId());
this.setEncapsulatedChannel(newChannelToUse);
this.notifyOnRetransmit = false;
this.timeoutIfStillInCallingState = false;
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("Creating clientTransaction " + this);
logger.logStackTrace();
}
// this.startTransactionTimer();
this.sipDialogs = new CopyOnWriteArraySet();
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setResponseInterface(gov.nist.javax.sip.stack.ServerResponseInterface)
*/
@Override
public void setResponseInterface(ServerResponseInterface newRespondTo) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("Setting response interface for " + this + " to " + newRespondTo);
if (newRespondTo == null) {
logger.logStackTrace();
logger.logDebug("WARNING -- setting to null!");
}
}
respondTo = newRespondTo;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getRequestChannel()
*/
@Override
public MessageChannel getRequestChannel() {
return encapsulatedChannel;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#isMessagePartOfTransaction(gov.nist.javax.sip.message.SIPMessage)
*/
@Override
public boolean isMessagePartOfTransaction(SIPMessage messageToTest) {
// List of Via headers in the message to test
Via topMostViaHeader = messageToTest.getTopmostVia();
// Flags whether the select message is part of this transaction
boolean transactionMatches;
String messageBranch = topMostViaHeader.getBranch();
boolean rfc3261Compliant = getBranch() != null
&& messageBranch != null
&& getBranch().toLowerCase()
.startsWith(SIPConstants.BRANCH_MAGIC_COOKIE_LOWER_CASE)
&& messageBranch.toLowerCase()
.startsWith(SIPConstants.BRANCH_MAGIC_COOKIE_LOWER_CASE);
transactionMatches = false;
if (TransactionState._COMPLETED == this.getInternalState()) {
if (rfc3261Compliant) {
transactionMatches = getBranch().equalsIgnoreCase(topMostViaHeader.getBranch())
&& getMethod().equals(messageToTest.getCSeq().getMethod());
} else {
transactionMatches = getBranch().equals(messageToTest.getTransactionId());
}
} else if (!isTerminated()) {
if (rfc3261Compliant) {
if (topMostViaHeader != null) {
// If the branch parameter is the
// same as this transaction and the method is the same,
if (getBranch().equalsIgnoreCase(topMostViaHeader.getBranch())) {
transactionMatches = getMethod().equals(messageToTest.getCSeq().getMethod());
}
}
} else {
// not RFC 3261 compliant.
if (getBranch() != null) {
transactionMatches = getBranch().equalsIgnoreCase(messageToTest.getTransactionId());
} else {
transactionMatches = ((SIPRequest) getRequest()).getTransactionId()
.equalsIgnoreCase(messageToTest.getTransactionId());
}
}
}
return transactionMatches;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#sendMessage(gov.nist.javax.sip.message.SIPMessage)
*/
@Override
public void sendMessage(SIPMessage messageToSend) throws IOException {
try {
// Message typecast as a request
SIPRequest transactionRequest;
transactionRequest = (SIPRequest) messageToSend;
// Set the branch id for the top via header.
Via topVia = (Via) transactionRequest.getTopmostVia();
// Tack on a branch identifier to match responses.
try {
topVia.setBranch(getBranch());
} catch (java.text.ParseException ex) {
}
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("Sending Message " + messageToSend);
logger.logDebug("TransactionState " + this.getState());
}
// If this is the first request for this transaction,
if (TransactionState._PROCEEDING == getInternalState()
|| TransactionState._CALLING == getInternalState())
{
// If this is a TU-generated ACK request,
if (transactionRequest.getMethod().equals(Request.ACK)) {
// Send directly to the underlying
// transport and close this transaction
if (isReliable()) {
this.setState(TransactionState._TERMINATED);
} else {
this.setState(TransactionState._COMPLETED);
}
cleanUpOnTimer();
// BUGBUG -- This suppresses sending the ACK uncomment this
// to
// test 4xx retransmission
// if (transactionRequest.getMethod() != Request.ACK)
super.sendMessage(transactionRequest);
return;
}
}
try {
// Send the message to the server
lastRequest = transactionRequest;
if (getInternalState() < 0) {
// Save this request as the one this transaction
// is handling
setOriginalRequest(transactionRequest);
// Change to trying/calling state
// Set state first to avoid race condition..
if (transactionRequest.getMethod().equals(Request.INVITE)) {
this.setState(TransactionState._CALLING);
} else if (transactionRequest.getMethod().equals(Request.ACK)) {
// Acks are never retransmitted.
this.setState(TransactionState._TERMINATED);
cleanUpOnTimer();
} else {
this.setState(TransactionState._TRYING);
}
if (!isReliable()) {
enableRetransmissionTimer();
}
if (isInviteTransaction()) {
enableTimeoutTimer(TIMER_B);
} else {
enableTimeoutTimer(TIMER_F);
}
}
// BUGBUG This supresses sending ACKS -- uncomment to test
// 4xx retransmission.
// if (transactionRequest.getMethod() != Request.ACK)
super.sendMessage(transactionRequest);
} catch (IOException e) {
this.setState(TransactionState._TERMINATED);
throw e;
}
} finally {
this.isMapped = true;
this.startTransactionTimer();
}
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#processResponse(gov.nist.javax.sip.message.SIPResponse,
* gov.nist.javax.sip.stack.MessageChannel, gov.nist.javax.sip.stack.SIPDialog)
*/
@Override
public synchronized void processResponse(SIPResponse transactionResponse,
MessageChannel sourceChannel,
SIPDialog dialog)
{
// If the state has not yet been assigned then this is a
// spurious response.
if (getInternalState() < 0)
return;
// Ignore 1xx
if ((TransactionState._COMPLETED == this.getInternalState() || TransactionState._TERMINATED == this.getInternalState())
&& transactionResponse.getStatusCode() / 100 == 1)
{
return;
}
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("processing " + transactionResponse.getFirstLine() + "current state = "
+ getState());
logger.logDebug("dialog = " + dialog);
}
this.lastResponse = transactionResponse;
/*
* JvB: this is now duplicate with code in the other processResponse
*
* if (dialog != null && transactionResponse.getStatusCode() != 100 &&
* (transactionResponse.getTo().getTag() != null || sipStack .isRfc2543Supported())) { //
* add the route before you process the response. dialog.setLastResponse(this,
* transactionResponse); this.setDialog(dialog, transactionResponse.getDialogId(false)); }
*/
try {
if (isInviteTransaction())
inviteClientTransaction(transactionResponse, sourceChannel, dialog);
else
nonInviteClientTransaction(transactionResponse, sourceChannel, dialog);
} catch (IOException ex) {
if (logger.isLoggingEnabled())
logger.logException(ex);
this.setState(TransactionState._TERMINATED);
raiseErrorEvent(SIPTransactionErrorEvent.TRANSPORT_ERROR);
}
}
/**
* Implements the state machine for invite client transactions.
*
*
*
*
*
*
*
* |Request from TU
* |send request
* Timer E V
* send request +-----------+
* +---------| |-------------------+
* | | Trying | Timer F |
* +-------->| | or Transport Err.|
* +-----------+ inform TU |
* 200-699 | | |
* resp. to TU | |1xx |
* +---------------+ |resp. to TU |
* | | |
* | Timer E V Timer F |
* | send req +-----------+ or Transport Err. |
* | +---------| | inform TU |
* | | |Proceeding |------------------>|
* | +-------->| |-----+ |
* | +-----------+ |1xx |
* | | ˆ |resp to TU |
* | 200-699 | +--------+ |
* | resp. to TU | |
* | | |
* | V |
* | +-----------+ |
* | | | |
* | | Completed | |
* | | | |
* | +-----------+ |
* | ˆ | |
* | | | Timer K |
* +--------------+ | - |
* | |
* V |
* NOTE: +-----------+ |
* | | |
* transitions | Terminated|<------------------+
* labeled with | |
* the event +-----------+
* over the action
* to take
*
* Figure 6: non-INVITE client transaction
*
*
*
*
*
*
* @param transactionResponse -- transaction response received.
* @param sourceChannel - source channel on which the response was received.
*/
private void nonInviteClientTransaction(SIPResponse transactionResponse,
MessageChannel sourceChannel,
SIPDialog sipDialog) throws IOException
{
int statusCode = transactionResponse.getStatusCode();
if (TransactionState._TRYING == this.getInternalState()) {
if (statusCode / 100 == 1) {
this.setState(TransactionState._PROCEEDING);
enableRetransmissionTimer(getTimerT2());
enableTimeoutTimer(TIMER_F);
// According to RFC, the TU has to be informed on
// this transition.
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, sipDialog);
} else {
this.semRelease();
}
} else if (200 <= statusCode && statusCode <= 699) {
if (!isReliable()) {
this.setState(TransactionState._COMPLETED);
scheduleTimerK(timerK);
} else {
this.setState(TransactionState._TERMINATED);
}
// Send the response up to the TU.
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, sipDialog);
} else {
this.semRelease();
}
if (isReliable() && TransactionState._TERMINATED == getInternalState()) {
cleanUpOnTerminated();
}
cleanUpOnTimer();
}
} else if (TransactionState._PROCEEDING == this.getInternalState()) {
if (statusCode / 100 == 1) {
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, sipDialog);
} else {
this.semRelease();
}
} else if (200 <= statusCode && statusCode <= 699) {
disableRetransmissionTimer();
disableTimeoutTimer();
if (!isReliable()) {
this.setState(TransactionState._COMPLETED);
scheduleTimerK(timerK);
} else {
this.setState(TransactionState._TERMINATED);
}
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, sipDialog);
} else {
this.semRelease();
}
if (isReliable() && TransactionState._TERMINATED == getInternalState()) {
cleanUpOnTerminated();
}
cleanUpOnTimer();
}
} else {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug(" Not sending response to TU! " + getState());
}
this.semRelease();
}
}
// avoid re-scheduling the transaction timer every 500ms while we know we have to wait for TIMER_K
// * 500 ms
private void scheduleTimerK(long time) {
if (transactionTimer != null && timerKStarted.compareAndSet(false, true)) {
synchronized (transactionTimerLock) {
if (!transactionTimerCancelled) {
sipStack.getTimer().cancel(transactionTimer);
transactionTimer = null;
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("starting TransactionTimerK() : " + getTransactionId() + " time "
+ time);
}
SIPStackTimerTask task = new SIPStackTimerTask() {
public void runTask() {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("executing TransactionTimerJ() : " + getTransactionId());
}
fireTimeoutTimer();
cleanUpOnTerminated();
}
@Override
public Object getThreadHash() {
Request request = getRequest();
if (request != null && request instanceof SIPRequest) {
return ((SIPRequest)request).getCallIdHeader().getCallId();
} else {
return null;
}
}
};
if (time > 0) {
sipStack.getTimer().schedule(task, time * baseTimerInterval);
} else {
task.runTask();
}
transactionTimerCancelled = true;
}
}
}
}
/**
* Implements the state machine for invite client transactions.
*
*
*
*
*
*
*
* |INVITE from TU
* Timer A fires |INVITE sent
* Reset A, V Timer B fires
* INVITE sent +-----------+ or Transport Err.
* +---------| |---------------+inform TU
* | | Calling | |
* +-------->| |-------------->|
* +-----------+ 2xx |
* | | 2xx to TU |
* | |1xx |
* 300-699 +---------------+ |1xx to TU |
* ACK sent | | |
* resp. to TU | 1xx V |
* | 1xx to TU -----------+ |
* | +---------| | |
* | | |Proceeding |-------------->|
* | +-------->| | 2xx |
* | +-----------+ 2xx to TU |
* | 300-699 | |
* | ACK sent, | |
* | resp. to TU| |
* | | | NOTE:
* | 300-699 V |
* | ACK sent +-----------+Transport Err. | transitions
* | +---------| |Inform TU | labeled with
* | | | Completed |-------------->| the event
* | +-------->| | | over the action
* | +-----------+ | to take
* | ˆ | |
* | | | Timer D fires |
* +--------------+ | - |
* | |
* V |
* +-----------+ |
* | | |
* | Terminated|<--------------+
* | |
* +-----------+
*
*
*
*
*
*
* @param transactionResponse -- transaction response received.
* @param sourceChannel - source channel on which the response was received.
*/
private void inviteClientTransaction(SIPResponse transactionResponse,
MessageChannel sourceChannel,
SIPDialog dialog) throws IOException
{
int statusCode = transactionResponse.getStatusCode();
if (TransactionState._TERMINATED == this.getInternalState()) {
boolean ackAlreadySent = false;
// if (dialog != null && dialog.isAckSeen() && dialog.getLastAckSent() != null)
if (dialog != null && dialog.isAckSent(transactionResponse.getCSeq().getSeqNumber())) {
if (dialog.getLastAckSentCSeq().getSeqNumber() == transactionResponse.getCSeq()
.getSeqNumber()
&& transactionResponse.getFromTag().equals(dialog.getLastAckSentFromTag()))
{
// the last ack sent corresponded to this response
ackAlreadySent = true;
}
}
// retransmit the ACK for this response.
if (dialog != null && ackAlreadySent
&& transactionResponse.getCSeq().getMethod().equals(dialog.getMethod()))
{
try {
// Found the dialog - resend the ACK and
// dont pass up the null transaction
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("resending ACK");
dialog.resendAck();
} catch (SipException ex) {
// What to do here ?? kill the dialog?
}
}
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG) && dialog != null)
logger.logDebug("Dialog " + dialog + " current state " + dialog.getState() );
if (dialog == null && statusCode >= 200 && statusCode < 300) {
// http://java.net/jira/browse/JSIP-377
// RFC 3261 Section 17.1.1.2
// The client transaction MUST be destroyed the instant it enters the
// "Terminated" state. This is actually necessary to guarantee correct
// operation. The reason is that 2xx responses to an INVITE are treated
// differently; each one is forwarded by proxies
// for proxy, it happens that there is a race condition while the tx is getting removed and
// TERMINATED
// where some responses are still able to be handled by it so we let 2xx responses for
// proxies pass up to the application
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("Client Transaction " + this + " branch id " + getBranch()
+ " doesn't have any dialog and is in TERMINATED state");
if (respondTo != null) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("passing 2xx response up to the application");
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
} else {
this.semRelease();
return;
}
} else if (dialog != null && dialog.getState() == DialogState.EARLY && statusCode >= 200 && statusCode < 300){
// https://java.net/jira/browse/JSIP-487
// for UAs, it happens that there is a race condition while the tx is getting removed and TERMINATED
// where some responses are still able to be handled by it so we let 2xx responses pass up to the application
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("Client Transaction " + this + " branch id " + getBranch() + " has a early dialog and is in TERMINATED state");
transactionResponse.setRetransmission(false);
if (respondTo != null) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("passing 2xx response up to the application");
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
} else {
this.semRelease();
return;
}
} else {
this.semRelease();
return;
}
} else if (TransactionState._CALLING == this.getInternalState()) {
if (statusCode / 100 == 2) {
// JvB: do this ~before~ calling the application, to avoid
// retransmissions
// of the INVITE after app sends ACK
disableRetransmissionTimer();
disableTimeoutTimer();
this.setState(TransactionState._TERMINATED);
// 200 responses are always seen by TU.
if (respondTo != null)
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
else {
this.semRelease();
}
} else if (statusCode / 100 == 1) {
disableRetransmissionTimer();
disableTimeoutTimer();
this.setState(TransactionState._PROCEEDING);
if (respondTo != null)
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
else {
this.semRelease();
}
} else if (300 <= statusCode && statusCode <= 699) {
// Send back an ACK request
try {
sendMessage((SIPRequest) createErrorAck());
} catch (Exception ex) {
logger.logError("Unexpected Exception sending ACK -- sending error AcK ", ex);
}
/*
* When in either the "Calling" or "Proceeding" states, reception of response with
* status code from 300-699 MUST cause the client transaction to transition to
* "Completed". The client transaction MUST pass the received response up to the
* TU, and the client transaction MUST generate an ACK request.
*/
if (this.getDialog() != null && ((SIPDialog) this.getDialog()).isBackToBackUserAgent()) {
((SIPDialog) this.getDialog()).releaseAckSem();
}
if (!isReliable()) {
this.setState(TransactionState._COMPLETED);
enableTimeoutTimer(timerD);
} else {
// Proceed immediately to the TERMINATED state.
this.setState(TransactionState._TERMINATED);
}
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
} else {
this.semRelease();
}
cleanUpOnTimer();
}
} else if (TransactionState._PROCEEDING == this.getInternalState()) {
if (statusCode / 100 == 1) {
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
} else {
this.semRelease();
}
} else if (statusCode / 100 == 2) {
this.setState(TransactionState._TERMINATED);
if (respondTo != null) {
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
} else {
this.semRelease();
}
} else if (300 <= statusCode && statusCode <= 699) {
// Send back an ACK request
try {
sendMessage((SIPRequest) createErrorAck());
} catch (Exception ex) {
InternalErrorHandler.handleException(ex);
}
if (this.getDialog() != null) {
((SIPDialog) this.getDialog()).releaseAckSem();
}
// JvB: update state before passing to app
if (!isReliable()) {
this.setState(TransactionState._COMPLETED);
this.enableTimeoutTimer(timerD);
} else {
this.setState(TransactionState._TERMINATED);
}
cleanUpOnTimer();
// Pass up to the TU for processing.
if (respondTo != null)
respondTo.processResponse(transactionResponse, encapsulatedChannel, dialog);
else {
this.semRelease();
}
// JvB: duplicate with line 874
// if (!isReliable()) {
// enableTimeoutTimer(TIMER_D);
// }
}
} else if (TransactionState._COMPLETED == this.getInternalState()) {
if (300 <= statusCode && statusCode <= 699) {
// Send back an ACK request
try {
sendMessage((SIPRequest) createErrorAck());
} catch (Exception ex) {
InternalErrorHandler.handleException(ex);
} finally {
this.semRelease();
}
}
}
}
/*
* (non-Javadoc)
*
* @see javax.sip.ClientTransaction#sendRequest()
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#sendRequest()
*/
@Override
public void sendRequest() throws SipException {
SIPRequest sipRequest = this.getOriginalRequest();
if (this.getInternalState() >= 0)
throw new IllegalTransactionStateException("Request already sent", Reason.RequestAlreadySent);
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("sendRequest() " + sipRequest);
}
try {
sipRequest.checkHeaders();
} catch (ParseException ex) {
if (logger.isLoggingEnabled())
logger.logError("missing required header");
throw new IllegalTransactionStateException(ex.getMessage(), Reason.MissingRequiredHeader);
}
if (getMethod().equals(Request.SUBSCRIBE) && sipRequest.getHeader(ExpiresHeader.NAME) == null) {
/*
* If no "Expires" header is present in a SUBSCRIBE request, the implied default is
* defined by the event package being used.
*/
if (logger.isLoggingEnabled())
logger.logWarning("Expires header missing in outgoing subscribe --"
+ " Notifier will assume implied value on event package");
}
try {
/*
* This check is removed because it causes problems for load balancers ( See issue
* 136) reported by Raghav Ramesh ( BT )
*/
if (this.getMethod().equals(Request.CANCEL) && sipStack.isCancelClientTransactionChecked()) {
SIPClientTransaction ct = (SIPClientTransaction) sipStack.findCancelTransaction(this.getOriginalRequest(),
false);
if (ct == null) {
/*
* If the original request has generated a final response, the CANCEL SHOULD
* NOT be sent, as it is an effective no-op, since CANCEL has no effect on
* requests that have already generated a final response.
*/
throw new SipException("Could not find original tx to cancel. RFC 3261 9.1");
} else if (ct.getInternalState() < 0) {
throw new SipException("State is null no provisional response yet -- cannot cancel RFC 3261 9.1");
} else if (!ct.isInviteTransaction()) {
throw new SipException("Cannot cancel non-invite requests RFC 3261 9.1");
}
} else if (this.getMethod().equals(Request.BYE) || this.getMethod().equals(Request.NOTIFY)) {
SIPDialog dialog = sipStack.getDialog(this.getOriginalRequest().getDialogId(false));
// I want to behave like a user agent so send the BYE using the
// Dialog
if (this.getSipProvider().isAutomaticDialogSupportEnabled() && dialog != null) {
throw new SipException("Dialog is present and AutomaticDialogSupport is enabled for "
+ " the provider -- Send the Request using the Dialog.sendRequest(transaction)");
}
}
// Only map this after the fist request is sent out.
if (isInviteTransaction()) {
SIPDialog dialog = this.getDefaultDialog();
if (dialog != null && dialog.isBackToBackUserAgent()) {
// Block sending re-INVITE till we see the ACK.
if (!dialog.takeAckSem()) {
throw new SipException("Failed to take ACK semaphore");
}
}
}
this.isMapped = true;
// Time extracted from the Expires header.
int expiresTime = -1;
if (sipRequest.getHeader(ExpiresHeader.NAME) != null) {
Expires expires = (Expires) sipRequest.getHeader(ExpiresHeader.NAME);
expiresTime = expires.getExpires();
}
// This is a User Agent. The user has specified an Expires time. Start a timer
// which will check if the tx is terminated by that time.
if (this.getDefaultDialog() != null && isInviteTransaction() && expiresTime != -1
&& expiresTimerTask == null)
{
this.expiresTimerTask = new ExpiresTimerTask();
// josemrecio - https://java.net/jira/browse/JSIP-467
sipStack.getTimer().schedule(expiresTimerTask, Long.valueOf(expiresTime) * 1000L);
}
this.sendMessage(sipRequest);
} catch (IOException ex) {
this.setState(TransactionState._TERMINATED);
if (this.expiresTimerTask != null) {
sipStack.getTimer().cancel(this.expiresTimerTask);
}
throw new SipException(ex.getMessage() == null ? "IO Error sending request" : ex.getMessage(),
ex);
}
}
/**
* Called by the transaction stack when a retransmission timer fires.
*/
public void fireRetransmissionTimer() {
try {
// Resend the last request sent
if (this.getInternalState() < 0 || !this.isMapped)
return;
boolean inv = isInviteTransaction();
int s = this.getInternalState();
// JvB: INVITE CTs only retransmit in CALLING, non-INVITE in both TRYING and
// PROCEEDING
// Bug-fix for non-INVITE transactions not retransmitted when 1xx response received
if ((inv && TransactionState._CALLING == s)
|| (!inv && (TransactionState._TRYING == s || TransactionState._PROCEEDING == s)))
{
// If the retransmission filter is disabled then
// retransmission of the INVITE is the application
// responsibility.
if (lastRequest != null) {
if (sipStack.generateTimeStampHeader
&& lastRequest.getHeader(TimeStampHeader.NAME) != null)
{
long milisec = System.currentTimeMillis();
TimeStamp timeStamp = new TimeStamp();
try {
timeStamp.setTimeStamp(milisec);
} catch (InvalidArgumentException ex) {
InternalErrorHandler.handleException(ex);
}
lastRequest.setHeader(timeStamp);
}
super.sendMessage(lastRequest);
if (this.notifyOnRetransmit) {
TimeoutEvent txTimeout = new TimeoutEvent(this.getSipProvider(),
this,
Timeout.RETRANSMIT);
this.getSipProvider().handleEvent(txTimeout, this);
}
if (this.timeoutIfStillInCallingState
&& this.getInternalState() == TransactionState._CALLING)
{
this.callingStateTimeoutCount--;
if (callingStateTimeoutCount == 0) {
TimeoutEvent timeoutEvent = new TimeoutEvent(this.getSipProvider(),
this,
Timeout.RETRANSMIT);
this.getSipProvider().handleEvent(timeoutEvent, this);
this.timeoutIfStillInCallingState = false;
}
}
}
}
} catch (IOException e) {
this.raiseIOExceptionEvent();
raiseErrorEvent(SIPTransactionErrorEvent.TRANSPORT_ERROR);
}
}
/**
* Called by the transaction stack when a timeout timer fires.
*/
public void fireTimeoutTimer() {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("fireTimeoutTimer " + this);
SIPDialog dialog = (SIPDialog) this.getDialog();
if (TransactionState._CALLING == this.getInternalState()
|| TransactionState._TRYING == this.getInternalState()
|| TransactionState._PROCEEDING == this.getInternalState())
{
// Timeout occured. If this is asociated with a transaction
// creation then kill the dialog.
if (dialog != null && (dialog.getState() == null || dialog.getState() == DialogState.EARLY)) {
if (SIPTransactionStack.isDialogCreated(this.getMethod())) {
// If this is a re-invite we do not delete the dialog even
// if the
// reinvite times out. Else
// terminate the enclosing dialog.
dialog.delete();
}
} else if (dialog != null) {
// Guard against the case of BYE time out.
if (this.getMethod().equalsIgnoreCase(Request.BYE) && dialog.isTerminatedOnBye()) {
// Terminate the associated dialog on BYE Timeout.
dialog.delete();
}
}
}
if (TransactionState._COMPLETED != this.getInternalState()
&& TransactionState._TERMINATED != this.getInternalState())
{
raiseErrorEvent(SIPTransactionErrorEvent.TIMEOUT_ERROR);
// Got a timeout error on a cancel.
if (this.getMethod().equalsIgnoreCase(Request.CANCEL)) {
SIPClientTransaction inviteTx = (SIPClientTransaction) this.getOriginalRequest()
.getInviteTransaction();
if (inviteTx != null
&& ((inviteTx.getInternalState() == TransactionState._CALLING || inviteTx.getInternalState() == TransactionState._PROCEEDING))
&& inviteTx.getDialog() != null)
{
/*
* A proxy server should have started TIMER C and take care of the Termination
* using transaction.terminate() by itself (i.e. this is not the job of the
* stack at this point but we do it to be nice.
*/
inviteTx.setState(TransactionState._TERMINATED);
}
}
} else {
this.setState(TransactionState._TERMINATED);
}
}
/*
* (non-Javadoc)
*
* @see javax.sip.ClientTransaction#createCancel()
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#createCancel()
*/
@Override
public Request createCancel() throws SipException {
SIPRequest originalRequest = this.getOriginalRequest();
if (originalRequest == null)
throw new SipException("Bad state " + getState());
if (!originalRequest.getMethod().equals(Request.INVITE))
throw new SipException("Only INIVTE may be cancelled");
if (originalRequest.getMethod().equalsIgnoreCase(Request.ACK))
throw new SipException("Cannot Cancel ACK!");
else {
SIPRequest cancelRequest = originalRequest.createCancelRequest();
cancelRequest.setInviteTransaction(this);
return cancelRequest;
}
}
/*
* (non-Javadoc)
*
* @see javax.sip.ClientTransaction#createAck()
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#createAck()
*/
@Override
public Request createAck() throws SipException {
SIPRequest originalRequest = this.getOriginalRequest();
if (originalRequest == null)
throw new SipException("bad state " + getState());
if (getMethod().equalsIgnoreCase(Request.ACK)) {
throw new SipException("Cannot ACK an ACK!");
} else if (lastResponse == null) {
throw new SipException("bad Transaction state");
} else if (lastResponse.getStatusCode() < 200) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("lastResponse = " + lastResponse);
}
throw new SipException("Cannot ACK a provisional response!");
}
SIPRequest ackRequest = originalRequest.createAckRequest((To) lastResponse.getTo());
// Pull the record route headers from the last reesponse.
RecordRouteList recordRouteList = lastResponse.getRecordRouteHeaders();
if (recordRouteList == null) {
// If the record route list is null then we can
// construct the ACK from the specified contact header.
// Note the 3xx check here because 3xx is a redirect.
// The contact header for the 3xx is the redirected
// location so we cannot use that to construct the
// request URI.
if (lastResponse.getContactHeaders() != null && lastResponse.getStatusCode() / 100 != 3) {
Contact contact = (Contact) lastResponse.getContactHeaders().getFirst();
javax.sip.address.URI uri = (javax.sip.address.URI) contact.getAddress().getURI().clone();
ackRequest.setRequestURI(uri);
}
return ackRequest;
}
ackRequest.removeHeader(RouteHeader.NAME);
RouteList routeList = new RouteList();
// start at the end of the list and walk backwards
ListIterator li = recordRouteList.listIterator(recordRouteList.size());
while (li.hasPrevious()) {
RecordRoute rr = (RecordRoute) li.previous();
Route route = new Route();
route.setAddress((AddressImpl) ((AddressImpl) rr.getAddress()).clone());
route.setParameters((NameValueList) rr.getParameters().clone());
routeList.add(route);
}
Contact contact = null;
if (lastResponse.getContactHeaders() != null) {
contact = (Contact) lastResponse.getContactHeaders().getFirst();
}
if (!((SipURI) ((Route) routeList.getFirst()).getAddress().getURI()).hasLrParam()) {
// Contact may not yet be there (bug reported by Andreas B).
Route route = null;
if (contact != null) {
route = new Route();
route.setAddress((AddressImpl) ((AddressImpl) (contact.getAddress())).clone());
}
Route firstRoute = (Route) routeList.getFirst();
routeList.removeFirst();
javax.sip.address.URI uri = firstRoute.getAddress().getURI();
ackRequest.setRequestURI(uri);
if (route != null)
routeList.add(route);
ackRequest.addHeader(routeList);
} else {
if (contact != null) {
javax.sip.address.URI uri = (javax.sip.address.URI) contact.getAddress().getURI().clone();
ackRequest.setRequestURI(uri);
ackRequest.addHeader(routeList);
}
}
return ackRequest;
}
/*
* Creates an ACK for an error response, according to RFC3261 section 17.1.1.3
*
* Note that this is different from an ACK for 2xx
*/
private final Request createErrorAck() throws SipException, ParseException {
SIPRequest originalRequest = this.getOriginalRequest();
if (originalRequest == null)
throw new SipException("bad state " + getState());
if (!isInviteTransaction()) {
throw new SipException("Can only ACK an INVITE!");
} else if (lastResponse == null) {
throw new SipException("bad Transaction state");
} else if (lastResponse.getStatusCode() < 200) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("lastResponse = " + lastResponse);
}
throw new SipException("Cannot ACK a provisional response!");
}
return originalRequest.createErrorAck((To) lastResponse.getTo());
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setViaPort(int)
*/
@Override
public void setViaPort(int port) {
this.viaPort = port;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setViaHost(java.lang.String)
*/
@Override
public void setViaHost(String host) {
this.viaHost = host;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getViaPort()
*/
@Override
public int getViaPort() {
return this.viaPort;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getViaHost()
*/
@Override
public String getViaHost() {
return this.viaHost;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getOutgoingViaHeader()
*/
@Override
public Via getOutgoingViaHeader() {
return this.getMessageProcessor().getViaHeader();
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#clearState()
*/
@Override
public void clearState() {
// reduce the state to minimum
// This assumes that the application will not need
// to access the request once the transaction is
// completed.
// TODO -- revisit this - results in a null pointer
// occuring occasionally.
// this.lastRequest = null;
// this.originalRequest = null;
// this.lastResponse = null;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setState(int)
*/
@Override
public void setState(int newState) {
// Set this timer for connection caching
// of incoming connections.
if (newState == TransactionState._TERMINATED && this.isReliable()
&& (!getSIPStack().cacheClientConnections))
{
// Set a time after which the connection
// is closed.
this.collectionTime = TIMER_J;
}
if (super.getInternalState() != TransactionState._COMPLETED
&& (newState == TransactionState._COMPLETED || newState == TransactionState._TERMINATED))
{
sipStack.decrementActiveClientTransactionCount();
}
super.setState(newState);
}
/**
* Start the timer task.
*/
public void startTransactionTimer() {
if (this.transactionTimerStarted.compareAndSet(false, true)) {
if (sipStack.getTimer() != null &&
// Fix for http://code.google.com/p/jain-sip/issues/detail?id=10
transactionTimerLock != null)
{
synchronized (transactionTimerLock) {
if (!transactionTimerCancelled) {
transactionTimer = new TransactionTimer();
sipStack.getTimer().scheduleWithFixedDelay(transactionTimer,
baseTimerInterval,
baseTimerInterval);
}
}
}
}
}
/*
* Terminate a transaction. This marks the tx as terminated The tx scanner will run and remove
* the tx. (non-Javadoc)
*
* @see javax.sip.Transaction#terminate()
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#terminate()
*/
@Override
public void terminate() {
this.setState(TransactionState._TERMINATED);
if (!transactionTimerStarted.get()) {
// if no transaction timer was started just remove the tx without firing a transaction
// terminated event
testAndSetTransactionTerminatedEvent();
sipStack.removeTransaction(this);
}
// releasing ack semaphore to permit sending further invites for this dialog
// needed to be able to fork new client transaction for this same dialog
SIPDialog dialog = (SIPDialog) getDialog();
if (dialog != null) {
dialog.releaseAckSem();
}
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#stopExpiresTimer()
*/
@Override
public void stopExpiresTimer() {
if (this.expiresTimerTask != null) {
sipStack.getTimer().cancel(this.expiresTimerTask);
this.expiresTimerTask = null;
}
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#checkFromTag(gov.nist.javax.sip.message.SIPResponse)
*/
@Override
public boolean checkFromTag(SIPResponse sipResponse) {
String originalFromTag = getOriginalRequestFromTag();
if (this.defaultDialog != null) {
if (originalFromTag == null ^ sipResponse.getFrom().getTag() == null) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("From tag mismatch -- dropping response");
return false;
}
if (originalFromTag != null
&& !originalFromTag.equalsIgnoreCase(sipResponse.getFrom().getTag()))
{
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("From tag mismatch -- dropping response");
return false;
}
}
return true;
}
/*
* (non-Javadoc)
*
* @see
* gov.nist.javax.sip.stack.ServerResponseInterface#processResponse(gov.nist.javax.sip.message
* .SIPResponse,
* gov.nist.javax.sip.stack.MessageChannel)
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#processResponse(gov.nist.javax.sip.message.SIPResponse,
* gov.nist.javax.sip.stack.MessageChannel)
*/
@Override
public void processResponse(SIPResponse sipResponse, MessageChannel incomingChannel) {
int code = sipResponse.getStatusCode();
boolean isRetransmission = !responsesReceived.add(Integer.valueOf(code));
if (code > 100 && code < 200 && isRetransmission) {
if (lastResponse != null && !sipResponse.equals(lastResponse)) {
isRetransmission = false;
}
}
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("marking response as retransmission " + isRetransmission + " for ctx " + this);
}
sipResponse.setRetransmission(isRetransmission);
// If a dialog has already been created for this response,
// pass it up.
SIPDialog dialog = null;
String method = sipResponse.getCSeq().getMethod();
String dialogId = sipResponse.getDialogId(false);
if (method.equals(Request.CANCEL) && lastRequest != null) {
// JvB for CANCEL: use invite CT in CANCEL request to get dialog
// (instead of stripping tag)
SIPClientTransaction ict = (SIPClientTransaction) lastRequest.getInviteTransaction();
if (ict != null) {
dialog = ict.getDefaultDialog();
}
} else {
dialog = this.getDialog(dialogId);
}
// JvB: Check all conditions required for creating a new Dialog
if (dialog == null) {
if ((code > 100 && code < 300)
/* skip 100 (may have a to tag */
&& (sipResponse.getToTag() != null || sipStack.isRfc2543Supported())
&& SIPTransactionStack.isDialogCreated(method))
{
/*
* Dialog cannot be found for the response. This must be a forked response. no
* dialog assigned to this response but a default dialog has been assigned. Note
* that if automatic dialog support is configured then a default dialog is always
* created.
*/
synchronized (this) {
/*
* We need synchronization here because two responses may compete for the
* default dialog simultaneously
*/
if (defaultDialog != null) {
if (sipResponse.getFromTag() != null) {
String defaultDialogId = defaultDialog.getDialogId();
if (defaultDialog.getLastResponseMethod() == null
|| (method.equals(Request.SUBSCRIBE)
&& defaultDialog.getLastResponseMethod().equals(Request.NOTIFY) && defaultDialogId.equals(dialogId)))
{
// The default dialog has not been claimed yet.
defaultDialog.setLastResponse(this, sipResponse);
dialog = defaultDialog;
} else {
/*
* check if we have created one previously (happens in the case of
* REINVITE processing. JvB: should not happen, this.defaultDialog
* should then get set in Dialog#sendRequest line 1662
*/
dialog = sipStack.getDialog(dialogId);
if (dialog == null) {
if (defaultDialog.isAssigned()) {
/*
* Nop we dont have one. so go ahead and allocate a new
* one.
*/
dialog = sipStack.createDialog(this, sipResponse);
dialog.setOriginalDialog(defaultDialog);
}
}
}
if (dialog != null) {
this.setDialog(dialog, dialog.getDialogId());
} else {
logger.logError("dialog is unexpectedly null", new NullPointerException());
}
} else {
throw new RuntimeException("Response without from-tag");
}
} else {
// Need to create a new Dialog, this becomes default
// JvB: not sure if this ever gets executed
if (sipStack.isAutomaticDialogSupportEnabled) {
dialog = sipStack.createDialog(this, sipResponse);
this.setDialog(dialog, dialog.getDialogId());
}
}
} // synchronized
} else {
dialog = defaultDialog;
}
} else {
// Test added to make sure the retrans flag is correct on forked responses
// this will avoid setting the last response on the dialog and chnage its state
// before it is passed to the dialogfilter layer where it is done as well
if (TransactionState._TERMINATED != getInternalState()) {
dialog.setLastResponse(this, sipResponse);
}
}
this.processResponse(sipResponse, incomingChannel, dialog);
}
/*
* (non-Javadoc)
*
* @see gov.nist.javax.sip.stack.SIPTransaction#getDialog()
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getDialog()
*/
@Override
public Dialog getDialog() {
// This is for backwards compatibility.
Dialog retval = null;
// get it in a local variable because the last response can be nullified and the if condition
// can throw NPE
SIPResponse localLastResponse = this.lastResponse;
if (localLastResponse != null && localLastResponse.getFromTag() != null
&& localLastResponse.getToTag() != null && localLastResponse.getStatusCode() != 100)
{
String dialogId = localLastResponse.getDialogId(false);
retval = (Dialog) getDialog(dialogId);
}
if (retval == null) {
retval = (Dialog) this.getDefaultDialog();
}
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug(" sipDialogs = " + sipDialogs + " default dialog " + this.getDefaultDialog()
+ " retval " + retval);
}
return retval;
}
/*
* (non-Javadoc)
*
* @see gov.nist.javax.sip.stack.SIPTransaction#setDialog(gov.nist.javax.sip.stack.SIPDialog,
* gov.nist.javax.sip.message.SIPMessage)
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getDialog(java.lang.String)
*/
@Override
public SIPDialog getDialog(String dialogId) {
SIPDialog retval = null;
if (sipDialogs != null && sipDialogs.contains(dialogId)) {
retval = this.sipStack.getDialog(dialogId);
if (retval == null) {
retval = this.sipStack.getEarlyDialog(dialogId);
}
}
return retval;
}
/*
* (non-Javadoc)
*
* @see gov.nist.javax.sip.stack.SIPTransaction#setDialog(gov.nist.javax.sip.stack.SIPDialog,
* gov.nist.javax.sip.message.SIPMessage)
*/
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setDialog(gov.nist.javax.sip.stack.SIPDialog,
* java.lang.String)
*/
@Override
public void setDialog(SIPDialog sipDialog, String dialogId) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("setDialog: " + dialogId + " sipDialog = " + sipDialog);
if (sipDialog == null) {
if (logger.isLoggingEnabled(LogWriter.TRACE_ERROR))
logger.logError("NULL DIALOG!!");
throw new NullPointerException("bad dialog null");
}
if (this.defaultDialog == null && defaultDialogId == null) {
this.defaultDialog = sipDialog;
// We only deal with Forked INVITEs.
if (isInviteTransaction() && this.getSIPStack().getMaxForkTime() != 0) {
this.getSIPStack().addForkedClientTransaction(this);
}
}
if (dialogId != null && sipDialog.getDialogId() != null && sipDialogs != null) {
this.sipDialogs.add(dialogId);
}
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getDefaultDialog()
*/
@Override
public SIPDialog getDefaultDialog() {
SIPDialog dialog = defaultDialog;
// jeand if the dialog has been nullified then get the dialog from the saved dialog id
if (dialog == null && defaultDialogId != null) {
dialog = this.sipStack.getDialog(defaultDialogId);
}
return dialog;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setNextHop(javax.sip.address.Hop)
*/
@Override
public void setNextHop(Hop hop) {
this.nextHop = hop;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getNextHop()
*/
@Override
public Hop getNextHop() {
return nextHop;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setNotifyOnRetransmit(boolean)
*/
@Override
public void setNotifyOnRetransmit(boolean notifyOnRetransmit) {
this.notifyOnRetransmit = notifyOnRetransmit;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#isNotifyOnRetransmit()
*/
@Override
public boolean isNotifyOnRetransmit() {
return notifyOnRetransmit;
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#alertIfStillInCallingStateBy(int)
*/
@Override
public void alertIfStillInCallingStateBy(int count) {
this.timeoutIfStillInCallingState = true;
this.callingStateTimeoutCount = count;
}
// jeand method use to cleanup eagerly all structures that won't be needed anymore once the tx
// passed in the COMPLETED state
protected void cleanUpOnTimer() {
if (getReleaseReferencesStrategy() != ReleaseReferencesStrategy.None) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("cleanupOnTimer: " + getTransactionId());
}
// we release the ref to the dialog asap and just keep the id of the dialog to look it up in
// the dialog table
if (defaultDialog != null) {
String dialogId = defaultDialog.getDialogId();
// we nullify the ref only if it can be find in the dialog table (not always true if the
// dialog is in null state, check challenge unittest of the testsuite)
if (dialogId != null && sipStack.getDialog(dialogId) != null) {
defaultDialogId = dialogId;
defaultDialog = null;
}
}
if (originalRequest != null) {
// http://java.net/jira/browse/JSIP-429
// store the merge id from the tx to avoid reparsing of request on aggressive cleanup
super.mergeId = ((SIPRequest) originalRequest).getMergeId();
originalRequest.setTransaction(null);
originalRequest.setInviteTransaction(null);
originalRequest.cleanUp();
// we keep the request in a byte array to be able to recreate it
// no matter what to keep API backward compatibility
if (originalRequestBytes == null && getReleaseReferencesStrategy() == ReleaseReferencesStrategy.Normal) {
// we encode it and keep it only for the Normal Strategy as it has a CPU cost.
originalRequestBytes = originalRequest.encodeAsBytes(this.getTransport());
}
if (!getMethod().equalsIgnoreCase(Request.INVITE)
&& !getMethod().equalsIgnoreCase(Request.CANCEL))
{
originalRequestFromTag = originalRequest.getFromTag();
originalRequestCallId = originalRequest.getCallId().getCallId();
originalRequestEventHeader = (Event) originalRequest.getHeader("Event");
originalRequestContact = originalRequest.getContactHeader();
originalRequestScheme = originalRequest.getRequestURI().getScheme();
originalRequest = null;
}
}
// for subscribe Tx we need to keep the last response longer to be able to create notify from
// dialog
if (!getMethod().equalsIgnoreCase(Request.SUBSCRIBE)) {
lastResponse = null;
}
lastRequest = null;
}
}
// jeand : cleanup method to clear the state of the tx once it has been removed from the stack
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#cleanUp()
*/
@Override
public void cleanUp() {
if (getReleaseReferencesStrategy() != ReleaseReferencesStrategy.None) {
// release the connection associated with this transaction.
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("cleanup : " + getTransactionId());
}
if (defaultDialog != null) {
defaultDialogId = defaultDialog.getDialogId();
defaultDialog = null;
}
// we keep the request in a byte array to be able to recreate it
// no matter what to keep API backward compatibility
if (originalRequest != null && originalRequestBytes == null) {
if(getReleaseReferencesStrategy() == ReleaseReferencesStrategy.Normal) {
// we encode it and keep it only for the Normal Strategy as it has a CPU cost.
originalRequestBytes = originalRequest.encodeAsBytes(this.getTransport());
}
// http://java.net/jira/browse/JSIP-429
// store the merge id from the tx to avoid reparsing of request on aggressive cleanup
super.mergeId = ((SIPRequest) originalRequest).getMergeId();
}
originalRequest = null;
cleanUpOnTimer();
// commented out because the application can hold on a ref to the tx
// after it has been removed from the stack
// and want to get the request or branch from it
// originalRequestBytes = null;
// originalRequestBranch = null;
originalRequestCallId = null;
originalRequestEventHeader = null;
originalRequestFromTag = null;
originalRequestContact = null;
originalRequestScheme = null;
if (sipDialogs != null) {
sipDialogs.clear();
}
responsesReceived.clear();
respondTo = null;
transactionTimer = null;
lastResponse = null;
transactionTimerLock = null;
// transactionTimerStarted = null;
timerKStarted = null;
}
}
// jeand cleanup called after the ctx timer or the timer k has fired
protected void cleanUpOnTerminated() {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("removing = " + this + " isReliable " + isReliable());
}
if (getReleaseReferencesStrategy() == ReleaseReferencesStrategy.Normal) {
if (originalRequest == null && originalRequestBytes != null) {
try {
originalRequest = (SIPRequest) sipStack.getMessageParserFactory()
.createMessageParser(sipStack)
.parseSIPMessage(originalRequestBytes,
true,
false,
null);
// originalRequestBytes = null;
} catch (ParseException e) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("message " + originalRequestBytes + " could not be reparsed !", e);
}
}
}
}
sipStack.removeTransaction(this);
// Client transaction terminated. Kill connection if
// this is a TCP after the linger timer has expired.
// The linger timer is needed to allow any pending requests to
// return responses.
if ((!sipStack.cacheClientConnections) && isReliable()) {
int newUseCount = --getMessageChannel().useCount;
if (newUseCount <= 0) {
// Let the connection linger for a while and then close
// it.
SIPStackTimerTask myTimer = new LingerTimer();
if(sipStack.getConnectionLingerTimer() != 0) {
sipStack.getTimer().schedule(myTimer, sipStack.getConnectionLingerTimer() * 1000);
} else {
myTimer.runTask();
}
}
} else {
// Cache the client connections so dont close the
// connection. This keeps the connection open permanently
// until the client disconnects.
if (logger.isLoggingEnabled() && isReliable()) {
int useCount = getMessageChannel().useCount;
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("Client Use Count = " + useCount);
}
// Let the connection linger for a while and then close
// it.
if (((SipStackImpl) getSIPStack()).isReEntrantListener() && getReleaseReferencesStrategy() != ReleaseReferencesStrategy.None) {
cleanUp();
}
// Commented out for Issue 298 : not to break backward compatibility
// this piece of code was not present before aggressive optimizations
// see sipx-stable-420 branch
// else {
// SIPStackTimerTask myTimer = new LingerTimer();
// sipStack.getTimer().schedule(myTimer,
// SIPTransactionStack.CONNECTION_LINGER_TIME * 1000);
// }
}
if (terminateDialogOnCleanUp) {
// If dialog is null state, no response is received and we should clean it up now,
// it's hopeless to recover. Refers to this issue https://github.com/usnistgov/jsip/issues/8
if(this.defaultDialog != null && this.defaultDialog.getState() == null) {
this.defaultDialog.setState(SIPDialog.TERMINATED_STATE);
}
}
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getOriginalRequestFromTag()
*/
@Override
public String getOriginalRequestFromTag() {
if (originalRequest == null) {
return originalRequestFromTag;
}
return originalRequest.getFromTag();
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getOriginalRequestCallId()
*/
@Override
public String getOriginalRequestCallId() {
if (originalRequest == null) {
return originalRequestCallId;
}
return originalRequest.getCallId().getCallId();
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getOriginalRequestEvent()
*/
@Override
public Event getOriginalRequestEvent() {
if (originalRequest == null) {
return originalRequestEventHeader;
}
return (Event) originalRequest.getHeader(EventHeader.NAME);
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getOriginalRequestContact()
*/
@Override
public Contact getOriginalRequestContact() {
if (originalRequest == null) {
return originalRequestContact;
}
return originalRequest.getContactHeader();
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#getOriginalRequestScheme()
*/
@Override
public String getOriginalRequestScheme() {
if (originalRequest == null) {
return originalRequestScheme;
}
return originalRequest.getRequestURI().getScheme();
}
/**
* @see gov.nist.javax.sip.stack.SIPClientTransaction#setTerminateDialogOnCleanUp(boolean)
*/
public void setTerminateDialogOnCleanUp(boolean enabled) {
terminateDialogOnCleanUp = enabled;
}
}
