0007815: exchange should have API to give refunds for purses in peer-pull payments

ID	Project	Category	View Status	Date Submitted	Last Update
0007815	Taler	exchange	public	2023-04-23 20:21	2026-09-19 14:40

Reporter	Florian Dold	Assigned To	Florian Dold	Resolution deadline
Implementer		Reviewer
Release signed by		Deployed by
Verifier		Communicator
Data protection authority notification required	No
CSIRT notification required	No
Estimated effort (hours)		Actual effort (hours)	0
Fast-track	No
Work package	none
Priority	none	Severity	feature	Reproducibility	always
Status	informing	Resolution	fixed
Target Version	1.6	Fixed in Version	1.6

Summary	0007815: exchange should have API to give refunds for purses in peer-pull payments
Description	The refund should only be possible until the purse is filled completely. The refund is done for each deposited coin individually. The attached diagram shows the state machine for peer-pull-debit transactions with refunds. The wallet for now does not support them.
Tags	No tags attached.
Attached Files	transaction-pull-debit-states.png (109,494 bytes) transaction-pull-debit-states.png (109,494 bytes)

Date Modified	Username	Field	Change
2023-04-23 20:21	Florian Dold	New Issue
2023-04-23 20:21	Florian Dold	Status	new => assigned
2023-04-23 20:21	Florian Dold	Assigned To	=> Christian Grothoff
2023-04-23 20:21	Florian Dold	File Added: transaction-pull-debit-states.png
2023-04-24 18:06	Christian Grothoff	Assigned To	Christian Grothoff =>
2023-04-24 18:06	Christian Grothoff	Priority	low => none
2023-04-24 18:06	Christian Grothoff	Status	assigned => implementing
2023-04-24 18:06	Christian Grothoff	Description Updated
2024-08-12 08:00	Christian Grothoff	Target Version	post-1.0 => post-2.0
2026-08-27 07:12	Florian Dold	Assigned To	=> Florian Dold
2026-08-27 07:12	Florian Dold	Status	implementing => informing
2026-08-27 07:12	Florian Dold	Resolution	open => fixed
2026-08-27 07:12	Florian Dold	Note Added: 0029615
2026-09-19 14:38	Christian Grothoff	Target Version	post-2.0 => 1.6
2026-09-19 14:40	Christian Grothoff	Fixed in Version	=> 1.6

Florian Dold 2026-08-27 07:12 manager ~0029615	The exchange now exposes authenticated DELETE /purses/$PURSE_PUB for an undecided purse; do_purse_delete records the refund and restores every deposited coin, and P2P tests exercise refunded purse reuse.