X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=hippotat.git;a=blobdiff_plain;f=client;h=e6ea8edfb1b81442e14a7f1adcf21a3269f7c9cc;hp=b3556471e489642caeff34c8bcc91f85ec80aeba;hb=697be73ae820a076f6803820038c830dec3c966d;hpb=1d023c89e4379225b5d71e565b93f537e119ab75 diff --git a/client b/client index b355647..e6ea8ed 100755 --- a/client +++ b/client @@ -2,28 +2,21 @@ from hippotat import * -defcfg = ''' -[DEFAULT] -max_requests_outstanding = 4 +import twisted.web +import twisted.web.client -[virtual] -mtu = 1500 -# [server] } maybe computed from `network' (see server defaults) +import io -[server] -# url } maybe computed from `addrs' and `port' (see server defaults) - -# [] -# password = -''' - -c.clientv = None +client_cs = None def set_client(ci,cs,pw): + global client_cs global password - assert(c.clientv is None) - c.clientv = ci + assert(client_cs is None) + client_cs = cs + c.client = ci c.max_outstanding = cfg.getint(cs, 'max_requests_outstanding') + c.target_outstanding = cfg.getint(cs, 'target_requests_outstanding') password = pw def process_cfg(): @@ -37,9 +30,200 @@ def process_cfg(): c.url = cfg.get('server','url') except NoOptionError: process_cfg_saddrs() - sa = c.saddrs[0].url() + c.url = c.saddrs[0].url() process_cfg_clients(set_client) -common_startup(defcfg) + c.routes = cfg.get('virtual','routes') + c.max_queue_time = cfg.getint(client_cs, 'max_queue_time') + c.max_batch_up = cfg.getint(client_cs, 'max_batch_up') + c.http_timeout = cfg.getint(client_cs, 'http_timeout') + c.http_retry = cfg.getint(client_cs, 'http_retry') + + process_cfg_ipif(client_cs, + (('local', 'client'), + ('peer', 'server'), + ('rnets', 'routes'))) + +outstanding = { } + +def log_outstanding(): + log_debug(DBG.CTRL_DUMP, 'OS %s' % outstanding) + +def start_client(): + global queue + global agent + queue = PacketQueue('up', c.max_queue_time) + agent = twisted.web.client.Agent(reactor, connectTimeout = c.http_timeout) + +def outbound(packet, saddr, daddr): + #print('OUT ', saddr, daddr, repr(packet)) + queue.append(packet) + check_outbound() + +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(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, (lambda: 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() + +def check_outbound(): + global outstanding + + while True: + if len(outstanding) >= c.max_outstanding : break + if not queue.nonempty() and len(outstanding) >= c.target_outstanding: break + + d = b'' + def moredata(s): nonlocal d; d += s + queue.process((lambda: len(d)), + moredata, + c.max_batch_up) + + d = mime_translate(d) + + crlf = b'\r\n' + lf = b'\n' + mime = (b'--b' + crlf + + b'Content-Type: text/plain; charset="utf-8"' + crlf + + b'Content-Disposition: form-data; name="m"' + crlf + crlf + + str(c.client) .encode('ascii') + crlf + + password + crlf + + str(c.target_outstanding) .encode('ascii') + crlf + + (( + b'--b' + crlf + + b'Content-Type: application/octet-stream' + crlf + + b'Content-Disposition: form-data; name="d"' + crlf + crlf + + d + crlf + ) if len(d) else b'') + + b'--b--' + crlf) + + #df = open('data.dump.dbg', mode='wb') + #df.write(mime) + #df.close() + # POST -use -c 'multipart/form-data; boundary="b"' http://localhost:8099/