Cutlery/calibre
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Remove unused code

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As of python 3.5 socket_pair is supported on windows as well
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Kovid Goyal 2020-12-08 09:37:57 +05:30
parent 2375f1c295
commit e5a5065934
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1 changed files with 4 additions and 36 deletions
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src/calibre/srv/utils.py
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@ -5,8 +5,7 @@
__license__ = 'GPL v3' __license__ = 'GPL v3'
__copyright__ = '2015, Kovid Goyal <kovid at kovidgoyal.net>' __copyright__ = '2015, Kovid Goyal <kovid at kovidgoyal.net>'
import errno, socket, select, os, time import errno, socket, os, time
from contextlib import closing
from email.utils import formatdate from email.utils import formatdate
from operator import itemgetter from operator import itemgetter
@ -146,41 +145,10 @@ def stop_cork(sock):
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_CORK, 0) sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_CORK, 0)
def create_sock_pair(port=0): def create_sock_pair():
'''Create socket pair. Works also on windows by using an ephemeral TCP port.''' '''Create socket pair. Works also on windows by using an ephemeral TCP port.'''
if hasattr(socket, 'socketpair'): client_sock, srv_sock = socket.socketpair()
client_sock, srv_sock = socket.socketpair() set_socket_inherit(client_sock, False), set_socket_inherit(srv_sock, False)
set_socket_inherit(client_sock, False), set_socket_inherit(srv_sock, False)
return client_sock, srv_sock
# Create a non-blocking temporary server socket
temp_srv_sock = socket.socket()
set_socket_inherit(temp_srv_sock, False)
temp_srv_sock.setblocking(False)
temp_srv_sock.bind(('127.0.0.1', port))
port = temp_srv_sock.getsockname()[1]
temp_srv_sock.listen(1)
with closing(temp_srv_sock):
# Create non-blocking client socket
client_sock = socket.socket()
client_sock.setblocking(False)
set_socket_inherit(client_sock, False)
try:
client_sock.connect(('127.0.0.1', port))
except socket.error as err:
# EWOULDBLOCK is not an error, as the socket is non-blocking
if err.errno not in socket_errors_nonblocking:
raise
# Use select to wait for connect() to succeed.
timeout = 1
readable = select.select([temp_srv_sock], [], [], timeout)[0]
if temp_srv_sock not in readable:
raise Exception('Client socket not connected in {} second(s)'.format(timeout))
srv_sock = temp_srv_sock.accept()[0]
set_socket_inherit(srv_sock, False)
client_sock.setblocking(True)
return client_sock, srv_sock return client_sock, srv_sock