| 1 | #!/usr/bin/python3 |
| 2 | |
| 3 | from hippotat import * |
| 4 | |
| 5 | import twisted.web |
| 6 | import twisted.web.client |
| 7 | |
| 8 | import io |
| 9 | |
| 10 | client_cs = None |
| 11 | |
| 12 | def set_client(ci,cs,pw): |
| 13 | global client_cs |
| 14 | global password |
| 15 | assert(client_cs is None) |
| 16 | client_cs = cs |
| 17 | c.client = ci |
| 18 | c.max_outstanding = cfg.getint(cs, 'max_requests_outstanding') |
| 19 | c.target_outstanding = cfg.getint(cs, 'target_requests_outstanding') |
| 20 | password = pw |
| 21 | |
| 22 | def process_cfg(): |
| 23 | global url |
| 24 | global max_requests_outstanding |
| 25 | |
| 26 | process_cfg_common_always() |
| 27 | process_cfg_server() |
| 28 | |
| 29 | try: |
| 30 | c.url = cfg.get('server','url') |
| 31 | except NoOptionError: |
| 32 | process_cfg_saddrs() |
| 33 | c.url = c.saddrs[0].url() |
| 34 | |
| 35 | process_cfg_clients(set_client) |
| 36 | |
| 37 | c.routes = cfg.get('virtual','routes') |
| 38 | c.max_queue_time = cfg.getint(client_cs, 'max_queue_time') |
| 39 | c.max_batch_up = cfg.getint(client_cs, 'max_batch_up') |
| 40 | c.http_timeout = cfg.getint(client_cs, 'http_timeout') |
| 41 | c.http_retry = cfg.getint(client_cs, 'http_retry') |
| 42 | |
| 43 | process_cfg_ipif(client_cs, |
| 44 | (('local', 'client'), |
| 45 | ('peer', 'server'), |
| 46 | ('rnets', 'routes'))) |
| 47 | |
| 48 | outstanding = 0 |
| 49 | |
| 50 | def start_client(): |
| 51 | global queue |
| 52 | global agent |
| 53 | queue = PacketQueue('up', c.max_queue_time) |
| 54 | agent = twisted.web.client.Agent(reactor, connectTimeout = c.http_timeout) |
| 55 | |
| 56 | def outbound(packet, saddr, daddr): |
| 57 | #print('OUT ', saddr, daddr, repr(packet)) |
| 58 | queue.append(packet) |
| 59 | check_outbound() |
| 60 | |
| 61 | class ResponseConsumer(twisted.internet.protocol.Protocol): |
| 62 | def __init__(self, req): |
| 63 | self._req = req |
| 64 | self._ssd = SlipStreamDecoder(queue_inbound) |
| 65 | self._log(DBG.HTTP_CTRL, '__init__') |
| 66 | |
| 67 | def _log(self, dflag, msg, **kwargs): |
| 68 | log_debug(dflag, 'RC ' + msg, idof=self._req, **kwargs) |
| 69 | |
| 70 | def dataReceived(self, data): |
| 71 | self._log(DBG.HTTP_CTRL, 'dataReceived', d=data) |
| 72 | try: |
| 73 | self._ssd.inputdata(mime_translate(data)) |
| 74 | except Exception as e: |
| 75 | self._asyncfailure(e) |
| 76 | |
| 77 | def connectionMade(self): |
| 78 | self._log(DBG.HTTP_CTRL, 'connectionMade') |
| 79 | |
| 80 | def connectionLost(self, reason): |
| 81 | self._log(DBG.HTTP_CTRL, 'connectionLost ' + str(reason)) |
| 82 | if reason.check(twisted.web.client.ResponseDone): |
| 83 | try: self._ssd.flush() |
| 84 | except Exception as e: |
| 85 | self._asyncfailure(e) |
| 86 | else: |
| 87 | self._asyncfailure(reason) |
| 88 | |
| 89 | def _asyncfailure(self, reason): |
| 90 | self._log(DBG.HTTP_CTRL, '_asyncFailure ' + str(reason)) |
| 91 | global outstanding |
| 92 | outstanding += 1 |
| 93 | req_err(self._req, reason) |
| 94 | |
| 95 | def req_ok(req, resp): |
| 96 | log_debug(DBG.HTTP_CTRL, 'req_ok ' + str(resp), idof=req) |
| 97 | rc = ResponseConsumer(req) |
| 98 | resp.deliverBody(rc) |
| 99 | req_fin(req) |
| 100 | |
| 101 | def req_err(req, err): |
| 102 | log_debug(DBG.HTTP_CTRL, 'req_err ' + str(err), idof=req) |
| 103 | print(err, file=sys.stderr) |
| 104 | reactor.callLater(c.http_retry, (lambda: req_fin(req))) |
| 105 | |
| 106 | def req_fin(req): |
| 107 | global outstanding |
| 108 | outstanding -= 1 |
| 109 | check_outbound() |
| 110 | |
| 111 | def asyncfailure(reason): |
| 112 | global outstanding |
| 113 | outstanding += 1 |
| 114 | req_err(None, reason) |
| 115 | |
| 116 | def check_outbound(): |
| 117 | global outstanding |
| 118 | |
| 119 | while True: |
| 120 | if outstanding >= c.max_outstanding : break |
| 121 | if not queue.nonempty() and outstanding >= c.target_outstanding: break |
| 122 | |
| 123 | d = b'' |
| 124 | def moredata(s): nonlocal d; d += s |
| 125 | queue.process((lambda: len(d)), |
| 126 | moredata, |
| 127 | c.max_batch_up) |
| 128 | |
| 129 | d = mime_translate(d) |
| 130 | |
| 131 | crlf = b'\r\n' |
| 132 | lf = b'\n' |
| 133 | mime = (b'--b' + crlf + |
| 134 | b'Content-Type: text/plain; charset="utf-8"' + crlf + |
| 135 | b'Content-Disposition: form-data; name="m"' + crlf + crlf + |
| 136 | str(c.client) .encode('ascii') + crlf + |
| 137 | password + crlf + |
| 138 | str(c.target_outstanding) .encode('ascii') + crlf + |
| 139 | (( |
| 140 | b'--b' + crlf + |
| 141 | b'Content-Type: application/octet-stream' + crlf + |
| 142 | b'Content-Disposition: form-data; name="d"' + crlf + crlf + |
| 143 | d + crlf |
| 144 | ) if len(d) else b'') + |
| 145 | b'--b--' + crlf) |
| 146 | |
| 147 | #df = open('data.dump.dbg', mode='wb') |
| 148 | #df.write(mime) |
| 149 | #df.close() |
| 150 | # POST -use -c 'multipart/form-data; boundary="b"' http://localhost:8099/ <data.dump.dbg |
| 151 | |
| 152 | log_debug(DBG.HTTP_FULL, 'requesting: ' + str(mime)) |
| 153 | |
| 154 | hh = { 'User-Agent': ['hippotat'], |
| 155 | 'Content-Type': ['multipart/form-data; boundary="b"'], |
| 156 | 'Content-Length': [str(len(mime))] } |
| 157 | |
| 158 | bytesreader = io.BytesIO(mime) |
| 159 | producer = twisted.web.client.FileBodyProducer(bytesreader) |
| 160 | |
| 161 | req = agent.request(b'POST', |
| 162 | c.url, |
| 163 | twisted.web.client.Headers(hh), |
| 164 | producer) |
| 165 | req.addTimeout(c.http_timeout, reactor) |
| 166 | req.addCallback((lambda resp: req_ok(req, resp))) |
| 167 | req.addErrback((lambda err: req_err(req, err))) |
| 168 | outstanding += 1 |
| 169 | |
| 170 | common_startup() |
| 171 | process_cfg() |
| 172 | start_client() |
| 173 | start_ipif(c.ipif_command, outbound) |
| 174 | check_outbound() |
| 175 | common_run() |