client/core: Recognize missing redemptions.

When sending redemptions, if the server does not know about the match,
assume revoked and stop sending.

client/core/trade.go

@@ -2879,6 +2879,28 @@ func (c *Core) sendRedeemAsync(t *trackedTrade, match *matchTracker, coinID, sec
 					},
 				})
 			}
+			if errors.As(err, &msgErr) && msgErr.Code == msgjson.RPCUnknownMatch {
+				oid := t.ID()
+				c.log.Warnf("DEX %s did not report active match %s on order %s - assuming revoked, status %v.",
+					t.dc.acct.host, match, oid, match.Status)
+				// We must have missed the revoke notification. Flag to allow recovery
+				// and subsequent retirement of the match and parent trade.
+				match.MetaData.Proof.SelfRevoked = true
+				if err := c.db.UpdateMatch(&match.MetaMatch); err != nil {
+					c.log.Errorf("Failed to update missing/revoked match: %v", err)
+				}
+
+				if t.maybeReturnCoins() {
+					updatedAssets := make(assetMap)
+					updatedAssets.count(t.wallets.fromWallet.AssetID)
+					c.updateBalances(updatedAssets)
+				}
+
+				numMissing := 1
+				subject, details := c.formatDetails(TopicMissingMatches,
+					numMissing, makeOrderToken(t.token()), t.dc.acct.host)
+				c.notify(newOrderNote(TopicMissingMatches, subject, details, db.ErrorLevel, t.coreOrderInternal()))
+			}
 			err = fmt.Errorf("error sending 'redeem' message: %w", err)
 			return
 		}