/** * 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; }