Issue retrieving http post values

[paolodina]

I have a problem with values submitted via POST form. This app skeleton can be used to see what's happening.

# view
@app.route('/foo', methods=('GET', 'POST'))
def foo():
    submitted = ''
    if flask.request.method == 'POST':
        import pdb; pdb.set_trace() # used later to print flask.request.form
        submitted = flask.request.form.get('username')
    return render_template('foo.html', submitted=submitted)

<!-- template -->
<p>Type a username:</p>
<form method="post" action="/foo">
  <input type="text" name="username">
  <input type="submit">
</form>
<p>You typed: {{ submitted }}</p>

Suppose the submitted value is "my name".

Case 1 - flask dev server:

(Pdb) flask.request.form # OK
ImmutableMultiDict([('username', u'my name')])

Case 2 - fireside generated war executed by jetty-runner:

(Pdb) print flask.request.form # Not the expected result
{'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00': [u'']}

There are two problems, it's a dictionary instead of ImmutableMultiDict and the value is a sequence of \x00. The code is the same in both case 1 and 2. Do you have any clue what's causing this?