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SubQueue.cs
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SubQueue.cs
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
namespace Azure.Messaging.ServiceBus
{
/// <summary>
/// Represents the possible system subqueues that can be received from.
/// </summary>
public enum SubQueue
{
/// <summary>
/// No subqueue, the queue itself will be received from.
/// </summary>
None = 0,
/// <summary>
/// The dead-letter subqueue contains messages that have been dead-lettered.
/// <see href="https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-dead-letter-queues#moving-messages-to-the-dlq"/>
/// </summary>
DeadLetter = 1,
/// <summary>
/// The transfer dead-letter subqueue contains messages that have been dead-lettered when
/// the following conditions apply:
/// <list type="bullet">
/// <item>
/// <description>A message passes through more than four queues or topics that are chained together.</description>
/// </item>
/// <item>
/// <description>The destination queue or topic is disabled or deleted.</description>
/// </item>
/// <item>
/// <description>The destination queue or topic exceeds the maximum entity size.</description>
/// </item>
/// </list>
/// <seealso href="https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-dead-letter-queues#dead-lettering-in-forwardto-or-sendvia-scenarios"/>
/// </summary>
TransferDeadLetter = 2
}
}