Ejemplo n.º 1
0
 /**
  * Create a client transaction from a raw channel.
  *
  * @param transaction is the transport channel to encapsulate.
  */
 public MessageChannel createMessageChannel(SIPTransaction transaction) {
   synchronized (clientTransactions) {
     // New client transaction to return
     SIPTransaction returnChannel = createClientTransaction(transaction.getMessageChannel());
     clientTransactions.add(0, (SIPClientTransaction) returnChannel);
     ((SIPClientTransaction) returnChannel).setViaPort(transaction.getViaPort());
     ((SIPClientTransaction) returnChannel).setViaHost(transaction.getViaHost());
     // Add the transaction timer for the state machine.
     returnChannel.startTransactionTimer();
     return returnChannel;
   }
 }
Ejemplo n.º 2
0
  /**
   * Invoked when an error has ocurred with a transaction.
   *
   * @param transactionErrorEvent Error event.
   */
  public synchronized void transactionErrorEvent(SIPTransactionErrorEvent transactionErrorEvent) {
    SIPTransaction transaction = (SIPTransaction) transactionErrorEvent.getSource();

    if (transactionErrorEvent.getErrorID() == SIPTransactionErrorEvent.TRANSPORT_ERROR) {
      // Kill scanning of this transaction.
      transaction.setState(SIPTransaction.TERMINATED_STATE);
      if (transaction instanceof SIPServerTransaction) {
        // let the reaper get him
        ((SIPServerTransaction) transaction).collectionTime = 0;
      }
      transaction.disableTimeoutTimer();
      transaction.disableRetransmissionTimer();
    }
  }
Ejemplo n.º 3
0
 /** Remove the transaction from transaction hash. */
 protected void removeTransactionHash(SIPTransaction sipTransaction) {
   SIPRequest sipRequest = sipTransaction.getOriginalRequest();
   if (sipRequest == null) return;
   if (sipTransaction instanceof SIPClientTransaction) {
     synchronized (clientTransactionTable) {
       String key = sipTransaction.getTransactionId();
       clientTransactionTable.remove(key);
     }
   } else if (sipTransaction instanceof SIPServerTransaction) {
     synchronized (serverTransactionTable) {
       String key = sipTransaction.getTransactionId();
       serverTransactionTable.remove(key);
     }
   }
 }
Ejemplo n.º 4
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;
  }
Ejemplo n.º 5
0
 /** Remove transaction. */
 public void removeTransaction(SIPTransaction sipTransaction) {
   if (sipTransaction instanceof SIPServerTransaction) {
     synchronized (serverTransactions) {
       serverTransactions.remove(sipTransaction);
     }
     synchronized (serverTransactionTable) {
       String key = sipTransaction.getTransactionId();
       serverTransactionTable.remove(key);
     }
   } else {
     synchronized (clientTransactions) {
       clientTransactions.remove(sipTransaction);
     }
     synchronized (clientTransactionTable) {
       String key = sipTransaction.getTransactionId();
       clientTransactionTable.remove(key);
     }
   }
 }
Ejemplo n.º 6
0
  /**
   * Creates a client transaction to handle a new request. Gets the real message channel from the
   * superclass, and then creates a new client transaction wrapped around this channel.
   *
   * @param nextHop Hop to create a channel to contact.
   */
  public MessageChannel createMessageChannel(int sourcePort, Hop nextHop)
      throws UnknownHostException {
    synchronized (clientTransactions) {
      // New client transaction to return
      SIPTransaction returnChannel;

      // Create a new client transaction around the
      // superclass' message channel
      MessageChannel mc = super.createMessageChannel(sourcePort, nextHop);

      // Superclass will return null if no message processor
      // available for the transport.
      if (mc == null) return null;

      returnChannel = createClientTransaction(mc);
      clientTransactions.add(0, (SIPClientTransaction) returnChannel);
      ((SIPClientTransaction) returnChannel).setViaPort(nextHop.getPort());
      ((SIPClientTransaction) returnChannel).setViaHost(nextHop.getHost());
      // Add the transaction timer for the state machine.
      returnChannel.startTransactionTimer();
      return returnChannel;
    }
  }
Ejemplo n.º 7
0
 /** Hash table for quick lookup of transactions. */
 protected void addTransactionHash(SIPTransaction sipTransaction) {
   SIPRequest sipRequest = sipTransaction.getOriginalRequest();
   // Via via = sipRequest.getTopmostVia();
   // Cannot cache old style requests.
   /**
    * if (via.getBranch() == null || ! via.getBranch().toUpperCase().startsWith
    * (SIPConstants.BRANCH_MAGIC_COOKIE.toUpperCase())){ return; }
    */
   if (sipTransaction instanceof SIPClientTransaction) {
     synchronized (clientTransactionTable) {
       String key = sipRequest.getTransactionId();
       clientTransactionTable.put(key, sipTransaction);
     }
   } else {
     synchronized (serverTransactionTable) {
       String key = sipRequest.getTransactionId();
       serverTransactionTable.put(key, sipTransaction);
     }
   }
 }
Ejemplo n.º 8
0
  /**
   * Actually proces the parsed message.
   *
   * @param sipMessage
   */
  public void processMessage(SIPMessage sipMessage) {

    if (sipMessage instanceof SIPRequest) {
      SIPRequest sipRequest = (SIPRequest) sipMessage;

      // This is a request - process it.
      // So far so good -- we will commit this message if
      // all processing is OK.
      if (sipStack.logWriter.isLoggingEnabled(ServerLog.TRACE_MESSAGES)) {

        this.sipStack.serverLog.logMessage(
            sipMessage,
            this.getPeerHostPort().toString(),
            this.getHost() + ":" + this.myPort,
            false,
            receptionTime);
      }
      ServerRequestInterface sipServerRequest = sipStack.newSIPServerRequest(sipRequest, this);
      // Drop it if there is no request returned
      if (sipServerRequest == null) {
        if (sipStack.isLoggingEnabled()) {
          this.sipStack.logWriter.logWarning("Null request interface returned -- dropping request");
        }

        return;
      }
      if (sipStack.isLoggingEnabled())
        this.sipStack.logWriter.logDebug(
            "About to process " + sipRequest.getFirstLine() + "/" + sipServerRequest);
      try {
        sipServerRequest.processRequest(sipRequest, this);
      } finally {
        if (sipServerRequest instanceof SIPTransaction) {
          SIPServerTransaction sipServerTx = (SIPServerTransaction) sipServerRequest;
          if (!sipServerTx.passToListener()) {
            ((SIPTransaction) sipServerRequest).releaseSem();
          }
        }
      }
      if (sipStack.isLoggingEnabled())
        this.sipStack.logWriter.logDebug(
            "Done processing " + sipRequest.getFirstLine() + "/" + sipServerRequest);

      // So far so good -- we will commit this message if
      // all processing is OK.

    } else {
      // Handle a SIP Reply message.
      SIPResponse sipResponse = (SIPResponse) sipMessage;
      try {
        sipResponse.checkHeaders();
      } catch (ParseException ex) {
        if (sipStack.isLoggingEnabled())
          sipStack.logWriter.logError(
              "Dropping Badly formatted response message >>> " + sipResponse);
        return;
      }
      ServerResponseInterface sipServerResponse = sipStack.newSIPServerResponse(sipResponse, this);
      if (sipServerResponse != null) {
        try {
          if (sipServerResponse instanceof SIPClientTransaction
              && !((SIPClientTransaction) sipServerResponse).checkFromTag(sipResponse)) {
            if (sipStack.isLoggingEnabled())
              sipStack.logWriter.logError(
                  "Dropping response message with invalid tag >>> " + sipResponse);
            return;
          }

          sipServerResponse.processResponse(sipResponse, this);
        } finally {
          if (sipServerResponse instanceof SIPTransaction
              && !((SIPTransaction) sipServerResponse).passToListener())
            ((SIPTransaction) sipServerResponse).releaseSem();
        }

        // Normal processing of message.
      } else {
        if (sipStack.isLoggingEnabled()) {
          this.sipStack.logWriter.logDebug("null sipServerResponse!");
        }
      }
    }
  }