// 2. initialize call & invoke
synchronized (AppContext.communicatorsLock) {
AppContext.init();
RemoteNodeConfiguration remoteNodeConf = new RemoteNodeConfiguration(this.port + "client", this.host, this.port,
this.connectionType.getValue(), this.keepAliveIntervalSeconds, 0, this.maxConnections);
this.requester = new SCRequester(remoteNodeConf, this.keepAliveTimeoutSeconds * Constants.SEC_TO_MILLISEC_FACTOR);
SCServiceCallback callback = new SCServiceCallback(true);
SCMPAttachCall attachCall = new SCMPAttachCall(this.requester);
try {
attachCall.invoke(callback, operationTimeoutSeconds * Constants.SEC_TO_MILLISEC_FACTOR);
} catch (Exception e) {