upload file

upload_file.py

    def _uploadFile(self):
        form = MultiPartForm()

        f = None

        try:
            f = io.open(self.dockwidget.filePathLineEdit.text(), 'r', encoding='utf-8') # opening file
            form.add_file('test', 'test.txt', f)

            request = urllib2.Request('http://localhost:8080/upload')
            body = unicode(form)

            request.add_header('Content-type', form.get_content_type())
            request.add_header('Content-length', len(body))
            request.add_data(body)
            
            urllib2.urlopen(request) # here I get an error
            # Traceback (most recent call last):
            # File "/Users/ograbek/.qgis2/python/plugins/NetModeler/net_modeler.py", line 293, in _uploadFile urllib2.urlopen(request)
            # File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 127, in urlopen return _opener.open(url, data, timeout)