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Original file line number Diff line number Diff line change
Expand Up @@ -138,6 +138,10 @@ public synchronized void addUser(long userId) {
return;
}

if (decryptors.containsKey(userId)) {
return;
}

log.debug("Adding user {}", userId);
DaveDecryptor decryptor = decryptors.computeIfAbsent(userId, id -> DaveDecryptor.create(id, session));
decryptor.prepareTransition(currentProtocolVersion);
Expand Down Expand Up @@ -299,7 +303,13 @@ private void prepareProtocolTransition(int transitionId, int protocolVersion) {

private void executeProtocolTransition(int transitionId) {
Integer protocolVersion = preparedTransitions.remove(transitionId);

if (protocolVersion == null) {
if (transitionId == DaveConstants.INIT_TRANSITION_ID) {
log.debug("Passing through transition with ID 0");
return;
}

log.warn("Unexpected Transition ID {}", transitionId);
return;
}
Expand Down