- Made init function in ascon handle errors

- Minor fixes to scriptcontext.c

ascon.i

@@ -70,6 +70,7 @@ struct Ascon {
   ErrMsg *curError;   /**< the currently active error */
   double start;       /**< unix time when read was started */
   void *private;      /**< private data of protocol */
+  void (*killPrivate)(void *); /** < kill function for private */
   int noResponse;     /**< no response expected */
   int responseValid;  /**< a valid response is ready */
   AsconHandler handler; /**< handler function */
@@ -92,11 +93,12 @@ int AsconStdHandler(Ascon *a);
 
 /** \brief initialize a standard connection
  *  \param a the connection
+ *  \param con A connection to print errors too.
  *  \param hostport the tcp/ip address (syntax: host:port)
  *
  * In most cases a custom init function may be a wrapper around AsconStdInit
  */
-void AsconStdInit(Ascon *a, int argc, char *argv[]);
+int AsconStdInit(Ascon *a, SConnection *con,  int argc, char *argv[]);
 
 /** The Ascon Protocol
  */
@@ -104,7 +106,7 @@ typedef struct AsconProtocol {
   struct AsconProtocol *next;
   char *name;
   AsconHandler handler;
-  void (*init)(Ascon *s, int argc, char *argv[]);
+  int (*init)(Ascon *s, SConnection *con, int argc, char *argv[]);
 } AsconProtocol;
 
 /** \brief Insert a new protocol into the protocol list
@@ -145,4 +147,12 @@ int AsconReadChar(int fd, char *chr);
  */
 int AsconWriteChars(int fd, char *data, int length);
 
+/** \brief store an error 
+  * \param a The asynchronous I/O structure to store the 
+  * error with
+  * \param msg The error message
+  * \param errorno The error number
+  */
+void AsconError(Ascon *a, char *msg, int errorno);
+
 #endif