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python: Reconnect SSL connections when ovsdb-server restarts.

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The do_handshake() function throws the exception OpenSSL.SSL.SysCallError
when the peer's SSL connection is closed, And the recv() function also
throws the exception OpenSSL.SSL.SysCallError when the peer's SSL
connection is abnormally closed, This commit catches the exception and
return error's errno.

Similarly, the recv() function also throws the exception
OpenSSL.SSL.ZeroReturnError when the peer's SSL connection is closed.  This
exception refers to TCP connection normal closed, return (0, "")

Signed-off-by: Guoshuai Li <ligs@dtdream.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Numan Siddique <nusiddiq@redhat.com>
This commit is contained in:
Guoshuai Li
2016-12-07 14:38:22 +08:00
committed by Ben Pfaff
parent 905d453a87
commit 2dc7e5ec51
1 changed files with 6 additions and 0 deletions
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6
python/ovs/stream.py
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@@ -451,6 +451,8 @@ class SSLStream(Stream):
self.socket.do_handshake()
except SSL.WantReadError:
return errno.EAGAIN
except SSL.SysCallError as e:
return ovs.socket_util.get_exception_errno(e)
return 0
@@ -459,6 +461,10 @@ class SSLStream(Stream):
return super(SSLStream, self).recv(n)
except SSL.WantReadError:
return (errno.EAGAIN, "")
except SSL.SysCallError as e:
return (ovs.socket_util.get_exception_errno(e), "")
except SSL.ZeroReturnError:
return (0, "")
def send(self, buf):
try: