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Fix case where Recursively calling the same method causes StackOverFlow #899

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merged 1 commit into from
Aug 6, 2022
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Fix case where Recursively calling the same method causes StackOverFlow #899

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11 changes: 10 additions & 1 deletion org.eclipse.paho.mqttv5.client/src/main/java/org/eclipse/paho/mqttv5/client/MqttClient.java
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Original file line number Diff line number Diff line change
Expand Up @@ -522,7 +522,16 @@ public IMqttToken subscribe(String topicFilter, int qos, IMqttMessageListener me

public IMqttToken subscribe(String[] topicFilters, int[] qos, IMqttMessageListener[] messageListeners)
throws MqttException {
return this.subscribe(topicFilters, qos, messageListeners);
if (topicFilters.length != qos.length) {
throw new MqttException(MqttClientException.REASON_CODE_UNEXPECTED_ERROR);
}

MqttSubscription[] subscriptions = new MqttSubscription[topicFilters.length];
for (int i = 0; i < topicFilters.length; ++i) {
subscriptions[i] = new MqttSubscription(topicFilters[i], qos[i]);
}

return this.subscribe(subscriptions, messageListeners);
}

public IMqttToken subscribe(MqttSubscription[] subscriptions, IMqttMessageListener[] messageListeners) throws MqttException {
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