Python interceptors - no way to get peer identity - patch

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Hello,
finally i managed to code it down... It should not break any existing code.
One should pass optional second boolean argument to
addServerReceiveRequest or addClientReceiveReply, i.e.:

interceptors.addServerReceiveRequest(validateCredentials, True)
interceptors.addClientReceiveReply(validateCredentials, True)

Sample validateCredentials might look like this:

def validateCredentials(op, contexts, peer_info):
=A0address =3D peer_info['address']
=A0identity =3D peer_info['identity']
=A0print "%s@%s" % (address, identity)


Patch is attached. Hope i didn't forget anything.
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Cheers,
Konstantin Olkhovskiy

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