| 1 | #!/usr/bin/python3 |
| 2 | |
| 3 | from hippotat import * |
| 4 | |
| 5 | import twisted.web |
| 6 | import twisted.web.client |
| 7 | |
| 8 | client_cs = None |
| 9 | |
| 10 | def set_client(ci,cs,pw): |
| 11 | global client_cs |
| 12 | global password |
| 13 | assert(client_cs is None) |
| 14 | client_cs = cs |
| 15 | c.client = ci |
| 16 | c.max_outstanding = cfg.getint(cs, 'max_requests_outstanding') |
| 17 | c.target_outstanding = cfg.getint(cs, 'target_requests_outstanding') |
| 18 | password = pw |
| 19 | |
| 20 | def process_cfg(): |
| 21 | global url |
| 22 | global max_requests_outstanding |
| 23 | |
| 24 | process_cfg_common_always() |
| 25 | process_cfg_server() |
| 26 | |
| 27 | try: |
| 28 | c.url = cfg.get('server','url') |
| 29 | except NoOptionError: |
| 30 | process_cfg_saddrs() |
| 31 | c.url = c.saddrs[0].url() |
| 32 | |
| 33 | process_cfg_clients(set_client) |
| 34 | |
| 35 | c.routes = cfg.get('virtual','routes') |
| 36 | c.max_queue_time = cfg.getint(client_cs, 'max_queue_time') |
| 37 | c.max_batch_up = cfg.getint(client_cs, 'max_batch_up') |
| 38 | c.http_timeout = cfg.getint(client_cs, 'http_timeout') |
| 39 | c.http_retry = cfg.getint(client_cs, 'http_retry') |
| 40 | |
| 41 | process_cfg_ipif(client_cs, |
| 42 | (('local', 'client'), |
| 43 | ('peer', 'server'), |
| 44 | ('rnets', 'routes'))) |
| 45 | |
| 46 | outstanding = 0 |
| 47 | |
| 48 | def start_client(): |
| 49 | global queue |
| 50 | global agent |
| 51 | queue = PacketQueue(c.max_queue_time) |
| 52 | agent = twisted.web.client.Agent(reactor, connectTimeout = c.http_timeout) |
| 53 | |
| 54 | def outbound(packet, saddr, daddr): |
| 55 | #print('OUT ', saddr, daddr, repr(packet)) |
| 56 | queue.append(packet) |
| 57 | check_outbound() |
| 58 | |
| 59 | class ResponseConsumer(twisted.internet.protocol.Protocol): |
| 60 | def __init__(self): |
| 61 | self._ssd = SlipStreamDecoder(queue_inbound) |
| 62 | def dataReceived(self, data): |
| 63 | try: self._ssd.inputdata(mime_translate(data)) |
| 64 | except Exception as e: asyncfailure(e) |
| 65 | def connectionMade(self): pass |
| 66 | def connectionLost(self, reason): |
| 67 | if isinstance(reason, twisted.internet.error.ConnectionDone): |
| 68 | try: self._ssd.flush() |
| 69 | except Exception as e: asyncfailure(e) |
| 70 | else: |
| 71 | asyncfailure(reason) |
| 72 | |
| 73 | def req_ok(resp): |
| 74 | resp.deliverBody(ResponseConsumer()) |
| 75 | req_fin() |
| 76 | |
| 77 | def req_err(err): |
| 78 | print(err, file=sys.stderr) |
| 79 | reactor.callLater(c.http_retry, req_fin) |
| 80 | |
| 81 | def req_fin(*args): |
| 82 | global outstanding |
| 83 | outstanding -= 1 |
| 84 | check_outbound() |
| 85 | |
| 86 | def asyncfailure(reason): |
| 87 | global outstanding |
| 88 | outstanding += 1 |
| 89 | req_err(reason) |
| 90 | |
| 91 | def check_outbound(): |
| 92 | global outstanding |
| 93 | |
| 94 | while True: |
| 95 | if outstanding >= c.max_outstanding : break |
| 96 | if not queue.nonempty() and outstanding >= c.target_outstanding: break |
| 97 | |
| 98 | d = b'' |
| 99 | def moredata(s): nonlocal d; d += s |
| 100 | queue.process((lambda: len(d)), |
| 101 | moredata, |
| 102 | c.max_batch_up) |
| 103 | |
| 104 | crlf = b'\r\n' |
| 105 | mime = (b'--b' + crlf + |
| 106 | b'Content-Disposition: form-data; name="m"' + crlf + |
| 107 | password + crlf + |
| 108 | str(c.client) .encode('ascii') + crlf + |
| 109 | str(c.target_outstanding) .encode('ascii') + crlf + |
| 110 | b'--b' + crlf + |
| 111 | b'Content-Disposition: form-data; name="d"' + crlf + |
| 112 | mime_translate(d) + crlf + |
| 113 | b'--b--' + crlf) |
| 114 | |
| 115 | print('REQUESTING ', mime, file=sys.stderr) |
| 116 | |
| 117 | hh = { 'User-Agent': ['hippotat'], |
| 118 | 'Content-Type': ['multipart/form-data; boundary="b"'] } |
| 119 | req = agent.request(b'POST', |
| 120 | c.url, |
| 121 | twisted.web.client.Headers(hh)) |
| 122 | req.addTimeout(c.http_timeout, reactor) |
| 123 | req.addCallbacks(req_ok, req_err) |
| 124 | outstanding += 1 |
| 125 | |
| 126 | common_startup() |
| 127 | process_cfg() |
| 128 | start_client() |
| 129 | start_ipif(c.ipif_command, outbound) |
| 130 | check_outbound() |
| 131 | common_run() |