def _post_data(self, context, traceback=None):
        if context:
            if isinstance(context, Flask):
                app = context
                context = None
            else:
                app = context.app
        else:
            app = stack.top.app

        application_data = self.__get_application_data(app)
        client_data = {
            "name": "flask-exceptional",
            "version": self.__version__,
            "protocol_version": self.__protocol_version
        }

        if context:
            request_data = self.__get_request_data(app, context.request,
                    context.session)
            context_data = getattr(context, "exceptional_context", None)
        else:
            request_data = None
            context_data = None

        traceback = traceback or tbtools.get_current_traceback()
        exception_data = self.__get_exception_data(traceback)
        encode_basestring = json.encoder.encode_basestring

        def _encode_basestring(value):
            if isinstance(value, str) and \
                    json.encoder.HAS_UTF8.search(value) is not None:
                value = value.decode("utf-8",
                        "replace")  # ensure the decode succeeds.

            replace = lambda match: json.encoder.ESCAPE_DCT[match.group(0)]

            return u'"%s"' % json.encoder.ESCAPE.sub(replace, value)

        try:
            json.encoder.encode_basestring = _encode_basestring
            ret_val = json.dumps({
                "application_environment": application_data,
                "client": client_data,
                "request": request_data,
                "exception": exception_data,
                "context": context_data
            }, ensure_ascii=False).encode("utf-8")
        finally:
            json.encoder.encode_basestring = encode_basestring

        if context and app.testing:
            g.exceptional = ret_val

        if self.url:
            request = Request(self.url)
            request.add_header("Content-Type", "application/json")

            if app.debug:
                data = ret_val
            else:
                request.add_header("Content-Encoding", "deflate")
                data = compress(ret_val, 1)

            try:
                try:
                    urlopen(request, data)
                except HTTPError, e:
                    if e.code >= 400:
                        raise
            except URLError:
                message = "Unable to connect to %s. See http://status.exceptional.io for details. Error data:\n%s"  # NOQA
                app.logger.warning(message, self.url, ret_val,
                        exc_info=True)
            except BadStatusLine:
                pass

        return ret_val
POST data to the the Exceptional API. If DEBUG is True then data is
dataset/ETHPy150Open jzempel/flask-exceptional/flask_exceptional.py/Exceptional._post_data