+class GeneralResponseConsumer(twisted.internet.protocol.Protocol):
+ def __init__(self, req, desc):
+ self._req = req
+ self._desc = desc
+
+ def _log(self, dflag, msg, **kwargs):
+ log_debug(dflag, '%s: %s' % (self._desc, msg), idof=self._req, **kwargs)
+
+ def connectionMade(self):
+ self._log(DBG.HTTP_CTRL, 'connectionMade')
+
+class ResponseConsumer(GeneralResponseConsumer):
+ def __init__(self, req):
+ super().__init__(req, 'RC')
+ ssddesc = '[%s] %s' % (id(req), self._desc)
+ self._ssd = SlipStreamDecoder(ssddesc, queue_inbound)
+ self._log(DBG.HTTP_CTRL, '__init__')
+
+ def dataReceived(self, data):
+ self._log(DBG.HTTP_CTRL, 'dataReceived', d=data)
+ try:
+ self._ssd.inputdata(data)
+ except Exception as e:
+ self._handleexception()
+
+ def connectionLost(self, reason):
+ self._log(DBG.HTTP_CTRL, 'connectionLost ' + str(reason))
+ if not reason.check(twisted.web.client.ResponseDone):
+ self.latefailure()
+ return
+ try:
+ self._ssd.flush()
+ req_fin(self._req)
+ except Exception as e:
+ self._handleexception()
+
+ def _handleexception(self):
+ self._latefailure(traceback.format_exc())
+
+ def _latefailure(self, reason):
+ self._log(DBG.HTTP_CTRL, '_asyncFailure ' + str(reason))
+ req_err(self._req, reason)
+
+class ErrorResponseConsumer(twisted.internet.protocol.Protocol):
+ def __init__(self, req, resp):
+ super().__init__(req, 'ERROR-RC')
+ self._resp = resp
+ self._m = b''
+ try:
+ self._phrase = resp.phrase.decode('utf-8')
+ except Exception:
+ self._phrase = repr(resp.phrase)
+ self._log(DBG.HTTP_CTRL, '__init__ %d %s' % (resp.code, self._phrase))
+
+ def dataReceived(self, data):
+ self._log(DBG.HTTP_CTRL, 'dataReceived ' + repr(data))
+ self._m += data
+
+ def connectionLost(self, reason):
+ try:
+ mbody = self._m.decode('utf-8')
+ except Exception:
+ mbody = repr(self._m)
+ if not reason.check(twisted.web.client.ResponseDone):
+ mbody += ' || ' + str(reason)
+ req_err(self._req,
+ "FAILED %d %s | %s"
+ % (self._resp.code, self._phrase, mbody))
+
+def req_ok(req, resp):
+ log_debug(DBG.HTTP_CTRL,
+ 'req_ok %d %s %s' % (resp.code, repr(resp.phrase), str(resp)),
+ idof=req)
+ if resp.code == 200:
+ rc = ResponseConsumer(req)
+ else:
+ rc = ErrorResponseConsumer(req, resp)
+
+ resp.deliverBody(rc)
+ # now rc is responsible for calling req_fin
+
+def req_err(req, err):
+ # called when the Deferred fails, or (if it completes),
+ # later, by ResponsConsumer or ErrorResponsConsumer
+ try:
+ log_debug(DBG.HTTP_CTRL, 'req_err ' + str(err), idof=req)
+ if isinstance(err, twisted.python.failure.Failure):
+ err = err.getTraceback()
+ print('[%#x] %s' % (id(req), err), file=sys.stderr)
+ if not isinstance(outstanding[req], int):
+ raise RuntimeError('[%#x] previously %s' % (id(req), outstanding[req]))
+ outstanding[req] = err
+ log_outstanding()
+ reactor.callLater(c.http_retry, partial(req_fin, req))
+ except Exception as e:
+ crash(traceback.format_exc() + '\n----- handling -----\n' + err)
+
+def req_fin(req):
+ del outstanding[req]
+ log_debug(DBG.HTTP_CTRL, 'req_fin OS=%d' % len(outstanding), idof=req)
+ check_outbound()