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import time
from socket import socket, error, AF_INET, SOCK_STREAM
def wait_for_socket(server_name, host, port, timeout=2):
ok = False
for x in range(10):
try:
print('Testing [%s] proxy server on %s:%d'
% (server_name, host, port))
s = socket(AF_INET, SOCK_STREAM)
s.connect((host, port))
s.close()
except error as ex:
print('ERROR', ex)
time.sleep(timeout/10.0)
else:
print('Connection established')
ok = True
break
if not ok:
raise Exception('The %s proxy server has not started in %d seconds'
% (server_name, timeout))
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