broken pipe and javascript xmlhttprequest

[}--o]

Hi,

could someone explain me why do I get a broken pipe when I call some urls
asynchronously from javascript, but works fine for synchronous calls?
I use django-piston to create a simple read api that I call using something
like

var req = new XMLHttpRequest();
req.open('GET', 'http://127.0.0.1:8000/api/user/', true, user, password); //
this is an async call, because of true, if I set it to false, then
everything runs fine
req.setRequestHeader('Authorization', make_base_auth(user, password));
req.setRequestHeader('Content-Type', 'application/json');
req.channel.loadFlags |= Ci.nsIRequest.LOAD_BYPASS_CACHE;
req.onload = myOnload
req.onstatechange = function(aEvt) {
  if(req.readyState == 4) {
    myOnload(aEvt, req);
  }
}
req.send(null);
if(req.status == 200)
  // do something with req.responseText

Here is the output of runserver: the first call to /api/user/ is synchronous
and returns fine, unlike the second one

[20/Apr/2010 05:56:01] "GET /api/user/ HTTP/1.1" 200 72
Traceback (most recent call last):
  File
"/home/nagyv/virtualenv/coosci/lib/python2.5/site-packages/django/core/servers/basehttp.py",
line 280, in run
    self.finish_response()
  File
"/home/nagyv/virtualenv/coosci/lib/python2.5/site-packages/django/core/servers/basehttp.py",
line 320, in finish_response
    self.write(data)
  File
"/home/nagyv/virtualenv/coosci/lib/python2.5/site-packages/django/core/servers/basehttp.py",
line 399, in write
    self.send_headers()
  File
"/home/nagyv/virtualenv/coosci/lib/python2.5/site-packages/django/core/servers/basehttp.py",
line 463, in send_headers
    self.send_preamble()
  File
"/home/nagyv/virtualenv/coosci/lib/python2.5/site-packages/django/core/servers/basehttp.py",
line 381, in send_preamble
    'Date: %s\r\n' % http_date()
  File "/usr/lib/python2.5/socket.py", line 262, in write
    self.flush()
  File "/usr/lib/python2.5/socket.py", line 249, in flush
    self._sock.sendall(buffer)
error: (32, 'Broken pipe')

it would be already a great help if someone could give me some ideas at
least how to find out which async call gives the broken pipe error, as when
I call them synchronously, they return fine.

thanks, Viktor

-- 
You received this message because you are subscribed to the Google Groups 
"Django users" group.
To post to this group, send email to django-us...@googlegroups.com.
To unsubscribe from this group, send email to 
django-users+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/django-users?hl=en.