[PROTON-2416] frame writer should reset its position on failure

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: proton-j-0.33.8
• Fix Version/s: proton-j-0.33.9
• Component/s: proton-j
• Assignee: Robbie Gemmell
• Reporter: Robbie Gemmell
• Created: 23/Aug/21 15:28
• Updated: 31/Aug/21 15:13
• Resolved: 23/Aug/21 15:45

Description

When writing a frame, the frame writer moves the position ahead to leave room for the frame header, then writes the frame performative and payload, and goes back and fills out the header once the frame size is known. It should ensure the position is reset if the process fails and no frame is written.