Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/planemo/network_util.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
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1 import socket
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2 try:
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3 from http.client import BadStatusLine
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4 except ImportError:
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5 from httplib import BadStatusLine
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6 from time import time as now
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7
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8 from six.moves.urllib.error import URLError
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9 from six.moves.urllib.request import urlopen
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10
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11
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12 def get_free_port():
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13 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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14 sock.bind(('localhost', 0))
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15 port = sock.getsockname()[1]
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16 sock.close()
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17 return port
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19
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20 def wait_http_service(url, timeout=None):
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21 if timeout:
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22 end = now() + timeout
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23
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24 while True:
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25 try:
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26 if timeout:
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27 next_timeout = end - now()
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28 if next_timeout < 0:
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29 return False
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30
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31 kwds = {} if timeout is None else dict(timeout=next_timeout)
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32 with urlopen(url, **kwds) as r:
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33 if r.getcode() != 200:
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34 continue
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35 return True
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36 except socket.error:
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37 pass
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38 except BadStatusLine:
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39 pass
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40 except URLError:
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41 pass
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42
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43
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44 # code.activestate.com/recipes/576655-wait-for-network-service-to-appear
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45 def wait_net_service(server, port, timeout=None):
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46 """ Wait for network service to appear.
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47
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48 :param int timeout: in seconds, if None or 0 wait forever
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49 :return: A ``bool`` - if ``timeout`` is ``None`` may return only ``True`` or
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50 throw an unhandled network exception.
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51 """
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52 if port is None:
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53 raise TypeError("wait_net_service passed NoneType port value.")
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54
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55 port = int(port)
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56
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57 if timeout:
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58 end = now() + timeout
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59
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60 while True:
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61 s = socket.socket()
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62 # Following line prevents this method from interfering with process
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63 # it is waiting for on localhost.
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64 s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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65 try:
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66 if timeout:
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67 next_timeout = end - now()
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68 if next_timeout < 0:
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69 return False
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70 else:
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71 s.settimeout(next_timeout)
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72
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73 s.connect((server, port))
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74
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75 except socket.timeout:
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76 # this exception occurs only if timeout is set
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77 if timeout:
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78 return False
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79
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80 except socket.error:
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81 # if getattr(e, "errno") == 61:
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82 # refused_connections += 1
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83 s.close()
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84 else:
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85 s.close()
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86 return True