cmRtNet.h/c:Added cmRtNetIsInitialized() and check for non-blank node label and bcast address.

cmRtNet.c

 #include "cmCtx.h"
 #include "cmMem.h"
 #include "cmMallocDebug.h"
+#include "cmLinkedHeap.h"
 #include "cmUdpPort.h"
 #include "cmRtNet.h"
 #include "cmTime.h"
 #include "cmRtSysMsg.h"
+#include "cmText.h"
 
 // flags for cmRtNetNode_t.flags;
 enum
   cmRtNetRC_t rc = kOkNetRC;
   cmRtNetNode_t* np;
 
-  if( label == NULL )
+  if( cmTextIsEmpty(label) )
     return cmErrMsg(&p->err,kInvalidLabelNetRC,"A null or blank node label was encountered.");
 
   if((np = _cmRtNetFindNode(p,label)) != NULL )
   if((rc = cmRtNetFinalize(h)) != kOkNetRC )
     goto errLabel;
 
+  if( cmTextIsEmpty(bcastAddr) )
+  {
+    rc = cmErrMsg(&p->err,kInvalidArgNetRC,"The 'broadcast address' is not valid.");
+    goto errLabel;
+  }
+
   // if this is the local node then initialze the local socket
   if( cmUdpInit(p->udpH,port,kNonBlockingUdpFl | kBroadcastUdpFl,_cmRtNetRecv,p,NULL,0,p->udpRecvBufByteCnt,p->udpTimeOutMs) != kOkUdpRC )
   {
   return rc;
 }
 
+
+bool cmRtNetIsInitialized( cmRtNetH_t h )
+{
+  if( cmRtNetIsValid(h) == false )
+    return false;
+
+  cmRtNet_t* p = _cmRtNetHandleToPtr(h);
+  return p->localNode != NULL && cmTextIsNotEmpty(p->bcastAddr);
+}
+
+
 cmRtNetRC_t cmRtNetRegisterEndPoint( cmRtNetH_t h, const cmChar_t* endPtLabel, unsigned endPtId )
 {
   cmRtNetRC_t rc = kOkNetRC;

cmRtNet.h

     kNodeNotFoundNetRC,
     kEndNotFoundNetRC,
     kLocalNodeNetRC,
+    kInvalidArgNetRC,
     kSyncFailNetRC,
     kNodeEndCntErrNetRC
   };
   // 'ipPort' refers to the socket port (which may need to be made available 
   // by the machine firewall cfg.)
   cmRtNetRC_t cmRtNetInitialize( cmRtNetH_t h, const cmChar_t* bcastAddr, const cmChar_t* nodeLabel, const cmChar_t* ipAddr, cmUdpPort_t ipPort );
+  bool        cmRtNetIsInitialized( cmRtNetH_t h );
 
   // Register the local endpoints.
   // Endpoints may only be registered once the network is initialized via