[QPID-6277] [C++ Broker, AMQP1.0] Broker fails to detect stolen link attempt

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.30
• Component/s: C++ Broker

Environment

Linux broker

• Assignee: Unassigned
• Reporter: Charles E. Rolke
• Created: 17/Dec/14 23:11
• Updated: 29/Jun/15 13:36

Description

A client program opens two identically named links to the same container. AMQP spec section 2.6.1 describes the link stolen link error state but that might not apply here. The broker is free not to honor the second attach request but if it does then the incoming attach should get an error. As it is the failed attach request is simply ignored.

The attached trace shows Frame 44 delivering the first attach which is accepted. Frame 59 shows the attach which is ignored.

The proton subsystem delivers the @attach(18) frame to the broker. In Connection :: Process() line 354 Frame 44 is intercepted because a link REQUIRES_OPEN. Frame 59 skips the link_open processing and goes directly to processDeliveries().

Issue Links

• is duplicated by: QPID-6615 [AMQP 1.0] unique link names per container should be enforced