Improvements for BOA

- Allowed write buffers to become very large in asynnet. Thus in order to allow for the transfer
  of large images. tested ub to 2kx2k, 16MB
- Handle lack of space in the write buffer more gracefully: just skip the image

conman.c

@@ -1178,6 +1178,8 @@ int SCWriteZipped(SConnection * self, char *pName, void *pData,
     SCWrite(self, "ERROR: no data to write in SCWriteZiped", eError);
     return 0;
   }
+
+
   pBuf = malloc(iDataLen*sizeof(char));
   memset(pBuf,0,iDataLen*sizeof(char));
 
@@ -1204,6 +1206,19 @@ int SCWriteZipped(SConnection * self, char *pName, void *pData,
   }
   compressedLength = compStream.total_out;
 
+  /*
+    If data is large, test if we can do it
+  */
+  if(compressedLength > 2*1000*1024) {
+    if(!ANETcanWrite(self->sockHandle,pData,compressedLength)){
+      SCWrite(self,"WARNING: skipping excessive data in SCWriteZipped",eLogError);
+      deflateEnd(&compStream);
+      free(pBuf);
+      return 0;
+    }
+  }
+
+
 
   /* write header line */
   memset(outBuf, 0, 65536);
@@ -1270,6 +1285,16 @@ int SCWriteBinary(SConnection * self, char *pName, void *pData,
     return 0;
   }
 
+  /*
+    If data is large, test if we can do it
+  */
+  if(iDataLen > 2*1000*1024) {
+    if(!ANETcanWrite(self->sockHandle,pData,iDataLen)){
+      SCWrite(self,"WARNING: skipping excessive data in SCWriteBinary",eLogError);
+      return 0;
+    }
+  }
+
   /* write header line */
   memset(outBuf, 0, 65536);