W3C home > Mailing lists > Public > www-lib@w3.org > October to December 1999

Re: Help...HTEventList_stopLoop()

From: <linda_fu@peoplesoft.com>
Date: Fri, 12 Nov 1999 09:33:24 -0800
To: Patrik.Lannergard@nexus.se
Cc: www-lib@w3.org
Message-ID: <OFE33B7443.AEFFA395-ON88256827.00602909@peoplesoft.com>

I think it is not correct to use HTProfile_delete( ) before any other
function call.  HTProfile_delete must be
the last function call you want to use for the whole program since it
closes every resource the program
has established. If you move HTProfile_delete() out of terminate_handler()
and move it to the end of
main(), it probably works.



Regards,
Linda



                                                                                                
                    Patrik Lannergård                                                           
                    <Patrik.Lannergard        To:     www-lib@w3.org                            
                    @nexus.se>                cc:                                               
                    Sent by:                  Subject:     Help...HTEventList_stopLoop()        
                    www-lib-request@w3                                                          
                    .org                                                                        
                                                                                                
                                                                                                
                    11/12/99 01:41 AM                                                           
                                                                                                
                                                                                                




Hi my name i Patrik from Sweden and i have for two weeks ago start to
use libwww, for internet application.

I try to build an application for posting and receiving data.
I start to use postform.c example and it works nice until I change
the terminal_handler function to use return 1 or
0 instead exit(0) and some strange memory error oocured.
I have try to do as people said in the discussion on libwww's homepage .I
try to stop (HTEventList_stopLoop();
the eventloop in the end of the terminal_handler function without result.
Do
you think anybody can help me.

The progrma looks like:


#include "WWWLib.h"
#include "WWWInit.h"

PRIVATE HTChunk * result = NULL;
PRIVATE char *Response = NULL;
///////////////////////////////////////////////////////////////////////////////



// Explanation:
// Arguments:
// Returnvalues:
///////////////////////////////////////////////////////////////////////////////



PRIVATE int printer (const char * fmt, va_list pArgs)
{
    return (vfprintf(stdout, fmt, pArgs));
}
///////////////////////////////////////////////////////////////////////////////



// Explanation:
// Arguments:
// Returnvalues:
///////////////////////////////////////////////////////////////////////////////



PRIVATE int tracer (const char * fmt, va_list pArgs)
{
    return (vfprintf(stderr, fmt, pArgs));
}
///////////////////////////////////////////////////////////////////////////////



// Explanation:
// Arguments:
// Returnvalues:
///////////////////////////////////////////////////////////////////////////////



PRIVATE int terminate_handler (HTRequest * request, HTResponse *
response,
          void * param, int status)
{
    if (status == HT_LOADED && result && HTChunk_data(result))
 {
  Response = HTChunk_data(result);
  HTPrint("%s", Response);
     /* We are done with this request */
     HTRequest_delete(request);

  /* Terminate libwww */
  HTProfile_delete();
  HTEventList_stopLoop();

  return 1;
 }
 return 0;
}
///////////////////////////////////////////////////////////////////////////////


// Explanation:  read i file and put it in a buffer
// Arguments:  unsigned long *data_len,char *filename, char **data
// Returnvalues:    int, 1 ok 0 error
///////////////////////////////////////////////////////////////////////////////



int
read_file(unsigned long *data_len,char *filename,
    char **data)
{

  int result = 1;
  FILE *input = NULL;

  input = fopen(filename, "rb");
  if(input == NULL)
  {
   result = 0;
   printf("Error\n");
  }
  else if (input != NULL)
  {
 *data_len = 0;
    // get length for file
    if (fseek(input, 0, SEEK_END) != 0)
    {
  result = 0;
 }
 else
 {
  *data_len  = ftell(input);
  rewind(input);
  if ((*data = (char*) malloc(*data_len)) != NULL)
  {
   if (fread(*data, 1, *data_len, input) != *data_len)
   {
    result = 0;
   }
  }
 }
 fclose(input);
}

  return result;
}
///////////////////////////////////////////////////////////////////////////////



// Explanation: Main function
// Arguments:
// Returnvalues:   0 error 1 ok
///////////////////////////////////////////////////////////////////////////////



int main (int argc, char ** argv)
{
    HTRequest * request = NULL;
    HTAnchor * anchor = NULL;
    HTAssocList * formfields = NULL;
    char * uri = NULL;

 unsigned long data_len = 0;
 char *filename = NULL;
 char *data = NULL;
 char *response_result = NULL;
 if(read_file(&data_len,"D:\\pkcs7.txt",&data))

    /* Create a new premptive client */
    HTProfile_newNoCacheClient("TestApp", "1.0");

    /* Need our own trace and print functions */
    HTPrint_setCallback(printer);
    HTTrace_setCallback(tracer);

    /* Get trace messages */
#if 0
    HTSetTraceMessageMask("sop");
#endif

    /* Add our own filter to update the history list */
    HTNet_addAfter(terminate_handler, NULL, NULL, HT_ALL, HT_FILTER_LAST
);

    /* Set the timeout for long we are going to wait for a response */
    //HTHost_setEventTimeout(20000);

    /* Handle command line args */
    if (argc >= 2)
 {
  int arg;
  uri = argv[1];
  for (arg=2; arg<argc; arg++)
  {
      char * string = argv[arg];

   /* Create a list to hold the form arguments */
   if (!formfields)
   {
    formfields = HTAssocList_new();
   }
      /* Parse the content and add it to the association list */
   HTParseFormInput(formfields, string);
  }
    }

    if (uri && formfields)
 {
  /* Create a request */
  request = HTRequest_new();

  /* Set the default output to "asis" */
  HTRequest_setOutputFormat(request, WWW_SOURCE);

  /* Get an anchor object for the URI */
  anchor = HTAnchor_findAddress(uri);

  /* Post the data and get the result in a chunk */
  result = HTPostFormAnchorToChunk(formfields, anchor, request);

  /* Clean up the form fields */
  HTAssocList_delete(formfields);

  /* Go into the event loop... */
  HTEventList_loop(request);


 }
 else
 {
  HTPrint("Type the URI to post to and the arguments for the POST
operation. Encode spaces as '+'\n");
  HTPrint("\t%s <uri> 'a=1' 'b=+2+' 'c=3 ...'\n", argv[0]);
    }
    return 0;
}


--
Mvh Patrik :-)
Received on Friday, 12 November 1999 12:31:04 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 23 April 2007 18:18:35 GMT