コード例 #1
0
 /**
  * Find a matching client SUBSCRIBE to the incoming notify. NOTIFY requests are matched to such
  * SUBSCRIBE requests if they contain the same "Call-ID", a "To" header "tag" parameter which
  * matches the "From" header "tag" parameter of the SUBSCRIBE, and the same "Event" header field.
  * Rules for comparisons of the "Event" headers are described in section 7.2.1. If a matching
  * NOTIFY request contains a "Subscription-State" of "active" or "pending", it creates a new
  * subscription and a new dialog (unless they have already been created by a matching response, as
  * described above).
  *
  * @param notifyMessage
  */
 public SIPClientTransaction findSubscribeTransaction(SIPRequest notifyMessage) {
   synchronized (clientTransactions) {
     Iterator<SIPClientTransaction> it = clientTransactions.iterator();
     String thisToTag = notifyMessage.getTo().getTag();
     if (thisToTag == null) return null;
     Event eventHdr = (Event) notifyMessage.getHeader(EventHeader.NAME);
     if (eventHdr == null) return null;
     while (it.hasNext()) {
       SIPClientTransaction ct = (SIPClientTransaction) it.next();
       // SIPRequest sipRequest = ct.getOriginalRequest();
       String fromTag = ct.from.getTag();
       Event hisEvent = ct.event;
       // Event header is mandatory but some slopply clients
       // dont include it.
       if (hisEvent == null) continue;
       if (ct.method.equals(Request.SUBSCRIBE)
           && fromTag.equalsIgnoreCase(thisToTag)
           && hisEvent != null
           && eventHdr.match(hisEvent)
           && notifyMessage.getCallId().getCallId().equalsIgnoreCase(ct.callId.getCallId()))
         return ct;
     }
   }
   return null;
 }
コード例 #2
0
  /**
   * Find the transaction corresponding to a given request.
   *
   * @param sipMessage request for which to retrieve the transaction.
   * @param isServer search the server transaction table if true.
   * @return the transaction object corresponding to the request or null if no such mapping exists.
   */
  public SIPTransaction findTransaction(SIPMessage sipMessage, boolean isServer) {
    SIPTransaction retval = null;

    if (isServer) {
      Via via = sipMessage.getTopmostVia();
      if (via.getBranch() != null) {
        String key = sipMessage.getTransactionId();

        synchronized (this.serverTransactionTable) {
          retval = (SIPTransaction) serverTransactionTable.get(key);
          if (LogWriter.needsLogging) logMessage("looking for key " + key);
          if (retval != null && retval.isMessagePartOfTransaction(sipMessage)) return retval;
        }
      }
      // Need to scan the table for old style transactions (RFC 2543
      // style)
      synchronized (this.serverTransactions) {
        Iterator<SIPServerTransaction> it = serverTransactions.iterator();
        while (it.hasNext()) {
          SIPServerTransaction sipServerTransaction = (SIPServerTransaction) it.next();
          if (sipServerTransaction.isMessagePartOfTransaction(sipMessage))
            return sipServerTransaction;
        }
      }
    } else {
      Via via = sipMessage.getTopmostVia();
      if (via.getBranch() != null) {
        String key = sipMessage.getTransactionId();
        synchronized (this.clientTransactionTable) {
          retval = (SIPTransaction) clientTransactionTable.get(key);
          if (retval != null && retval.isMessagePartOfTransaction(sipMessage)) return retval;
        }
      }
      // Need to scan the table for old style transactions (RFC 2543
      // style)
      synchronized (this.clientTransactions) {
        Iterator<SIPClientTransaction> it = clientTransactions.iterator();
        while (it.hasNext()) {
          SIPClientTransaction clientTransaction = (SIPClientTransaction) it.next();
          if (clientTransaction.isMessagePartOfTransaction(sipMessage)) return clientTransaction;
        }
      }
    }
    return null;
  }
コード例 #3
0
  /**
   * Get the transaction to cancel. Search the server transaction table for a transaction that
   * matches the given transaction.
   */
  public SIPTransaction findCancelTransaction(SIPRequest cancelRequest, boolean isServer) {

    if (LogWriter.needsLogging) {
      logWriter.logMessage(
          "findCancelTransaction request= \n"
              + cancelRequest
              + "\nfindCancelRequest isServer="
              + isServer);
    }

    if (isServer) {
      synchronized (this.serverTransactions) {
        Iterator<SIPServerTransaction> li = this.serverTransactions.iterator();
        while (li.hasNext()) {
          SIPTransaction transaction = (SIPTransaction) li.next();
          // SIPRequest sipRequest = (SIPRequest) (transaction
          //		.getRequest());

          SIPServerTransaction sipServerTransaction = (SIPServerTransaction) transaction;
          if (sipServerTransaction.doesCancelMatchTransaction(cancelRequest))
            return sipServerTransaction;
        }
      }
    } else {
      synchronized (this.clientTransactions) {
        Iterator<SIPClientTransaction> li = this.clientTransactions.iterator();
        while (li.hasNext()) {
          SIPTransaction transaction = (SIPTransaction) li.next();
          //					SIPRequest sipRequest = (SIPRequest) (transaction
          //							.getRequest());

          SIPClientTransaction sipClientTransaction = (SIPClientTransaction) transaction;
          if (sipClientTransaction.doesCancelMatchTransaction(cancelRequest))
            return sipClientTransaction;
        }
      }
    }
    if (LogWriter.needsLogging)
      logWriter.logMessage("Could not find transaction for cancel request");
    return null;
  }
コード例 #4
0
  /**
   * Handles a new SIP response. It finds a client transaction to handle this message. If none
   * exists, it sends the message directly to the superclass.
   *
   * @param responseReceived Response to handle.
   * @param responseMessageChannel Channel that received message.
   * @return A client transaction.
   */
  protected ServerResponseInterface newSIPServerResponse(
      SIPResponse responseReceived, MessageChannel responseMessageChannel) {
    //	System.out.println("response = " + responseReceived.encode());

    // Iterator through all client transactions
    Iterator<SIPClientTransaction> transactionIterator;
    // Next transaction in the set
    SIPClientTransaction nextTransaction;
    // Transaction to handle this request
    SIPClientTransaction currentTransaction;

    String key = responseReceived.getTransactionId();

    currentTransaction = (SIPClientTransaction) clientTransactionTable.get(key);

    if (currentTransaction == null
        || !currentTransaction.isMessagePartOfTransaction(responseReceived)) {
      // Loop through all server transactions
      synchronized (clientTransactions) {
        transactionIterator = clientTransactions.iterator();
        currentTransaction = null;
        while (transactionIterator.hasNext() && currentTransaction == null) {

          nextTransaction = (SIPClientTransaction) transactionIterator.next();

          // If this transaction should handle this request,
          if (nextTransaction.isMessagePartOfTransaction(responseReceived)) {

            // Mark this transaction as the one to
            // handle this message
            currentTransaction = nextTransaction;
          }
        }
      }

      // If no transaction exists to handle this message,
      if (currentTransaction == null) {

        // Pass the message directly to the TU
        return super.newSIPServerResponse(responseReceived, responseMessageChannel);
      }
    }

    // Set ths transaction's encapsulated response interface
    // from the superclass
    currentTransaction.setResponseInterface(
        super.newSIPServerResponse(responseReceived, currentTransaction));
    return currentTransaction;
  }
コード例 #5
0
 /**
  * Remove the dialog from the dialog table.
  *
  * @param dialog -- dialog to remove.
  */
 public void removeDialog(SIPDialog dialog) {
   synchronized (dialogTable) {
     Iterator<SIPDialog> it = this.dialogTable.values().iterator();
     while (it.hasNext()) {
       SIPDialog d = (SIPDialog) it.next();
       if (d == dialog) {
         if (LogWriter.needsLogging) {
           String dialogId = dialog.getDialogId();
           logWriter.logMessage("Removing Dialog " + dialogId);
         }
         it.remove();
       }
     }
   }
 }
コード例 #6
0
  public SIPServerTransaction findPendingTransaction(SIPRequest requestReceived) {
    SIPServerTransaction currentTransaction;
    Iterator<SIPServerTransaction> transactionIterator;
    synchronized (pendingTransactions) {
      transactionIterator = pendingTransactions.iterator();
      currentTransaction = null;
      while (transactionIterator.hasNext() && currentTransaction == null) {

        SIPServerTransaction nextTransaction = (SIPServerTransaction) transactionIterator.next();

        // If this transaction should handle this request,
        if (nextTransaction.isMessagePartOfTransaction(requestReceived)) {
          // Mark this transaction as the one
          // to handle this message
          currentTransaction = nextTransaction;
        }
      }
    }
    return currentTransaction;
  }
コード例 #7
0
  /**
   * Handles a new SIP request. It finds a server transaction to handle this message. If none
   * exists, it creates a new transaction.
   *
   * @param requestReceived Request to handle.
   * @param requestMessageChannel Channel that received message.
   * @return A server transaction.
   */
  protected ServerRequestInterface newSIPServerRequest(
      SIPRequest requestReceived, MessageChannel requestMessageChannel) {

    // Iterator through all server transactions
    Iterator<SIPServerTransaction> transactionIterator;
    // Next transaction in the set
    SIPServerTransaction nextTransaction;
    // Transaction to handle this request
    SIPServerTransaction currentTransaction;

    String key = requestReceived.getTransactionId();

    currentTransaction = (SIPServerTransaction) serverTransactionTable.get(key);
    if (currentTransaction == null
        || !currentTransaction.isMessagePartOfTransaction(requestReceived)) {

      // Loop through all server transactions
      synchronized (serverTransactions) {
        transactionIterator = serverTransactions.iterator();
        currentTransaction = null;
        while (transactionIterator.hasNext() && currentTransaction == null) {

          nextTransaction = (SIPServerTransaction) transactionIterator.next();

          // If this transaction should handle this request,
          if (nextTransaction.isMessagePartOfTransaction(requestReceived)) {
            // Mark this transaction as the one
            // to handle this message
            currentTransaction = nextTransaction;
          }
        }

        // If no transaction exists to handle this message
        if (currentTransaction == null) {
          currentTransaction = findPendingTransaction(requestReceived);
          if (currentTransaction != null) return currentTransaction;
          currentTransaction = createServerTransaction(requestMessageChannel);
          currentTransaction.setOriginalRequest(requestReceived);
          if (!isDialogCreated(requestReceived.getMethod())) {
            // Dialog is not created - can we find the state?
            // If so, then create a transaction and add it.
            String dialogId = requestReceived.getDialogId(true);
            SIPDialog dialog = getDialog(dialogId);
            // Sequence numbers are supposed to increment.
            // avoid processing old sequence numbers and
            // delivering the same request up to the
            // application if the request has already been seen.
            // Special handling applies to ACK processing.
            if (dialog != null
                && (requestReceived.getMethod().equals(Request.ACK)
                    || requestReceived.getCSeq().getSequenceNumber()
                        > dialog.getRemoteSequenceNumber())) {
              // Found a dialog.
              if (LogWriter.needsLogging)
                logWriter.logMessage("adding server transaction " + currentTransaction);
              serverTransactions.add(0, currentTransaction);
              addTransactionHash(currentTransaction);
              currentTransaction.startTransactionTimer();
              currentTransaction.isMapped = true;
            }
          } else {
            // Create the transaction but dont map it.
            String dialogId = requestReceived.getDialogId(true);
            SIPDialog dialog = getDialog(dialogId);
            // This is a dialog creating request that is part of an
            // existing dialog (eg. re-Invite). Re-invites get a non
            // null server transaction Id (unlike the original
            // invite).
            if (dialog != null
                && requestReceived.getCSeq().getSequenceNumber()
                    > dialog.getRemoteSequenceNumber()) {
              currentTransaction.map();
              if (LogWriter.needsLogging)
                logWriter.logMessage("adding server transaction " + currentTransaction);
              serverTransactions.add(0, currentTransaction);
              addTransactionHash(currentTransaction);
              currentTransaction.startTransactionTimer();
              currentTransaction.toListener = true;
            }
          }
        }
      }
    }

    // Set ths transaction's encapsulated request
    // interface from the superclass
    currentTransaction.setRequestInterface(
        super.newSIPServerRequest(requestReceived, currentTransaction));
    return currentTransaction;
  }