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starting TcpServer in case of Address already in use

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try several times, in case this is a restart. It seems that
allow_reuse_address = True is not always enough
This commit is contained in:
l_samenv 2021-04-08 10:19:03 +02:00
parent d768d84ea1
commit dec286460d
1 changed files with 15 additions and 3 deletions
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18
secop/protocol/interface/tcp.py
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@ -25,6 +25,7 @@ import socket
import socketserver
import sys
import threading
import time
from secop.datatypes import BoolType, StringType
from secop.errors import SECoPError
@ -184,8 +185,19 @@ class TCPServer(socketserver.ThreadingTCPServer):
port = int(options.pop('uri').split('://', 1)[-1])
self.detailed_errors = options.pop('detailed_errors', False)
self.allow_reuse_address = True
self.log.info("TCPServer %s binding to port %d" % (name, port))
socketserver.ThreadingTCPServer.__init__(
self, ('0.0.0.0', port), TCPRequestHandler, bind_and_activate=True)
for ntry in range(5):
try:
socketserver.ThreadingTCPServer.__init__(
self, ('0.0.0.0', port), TCPRequestHandler, bind_and_activate=True)
break
except OSError as e:
if e.args[0] == 98: # address already in use
# this may happen despite of allow_reuse_address
time.sleep(0.3 * (1 << ntry))
else:
self.log.error('could not initialize TCP Server: %r' % e)
raise
if ntry:
self.log.warning('tried again %d times after "Address already in use"' % ntry)
self.log.info("TCPServer initiated")