-get p2p pull integration test to run through

11 files changed, 341 insertions, 111 deletions

diff --git a/packages/taler-util/src/talerTypes.ts b/packages/taler-util/src/talerTypes.ts
index ee2dee93c..e36236085 100644
--- a/packages/taler-util/src/talerTypes.ts
+++ b/packages/taler-util/src/talerTypes.ts
@@ -1945,3 +1945,8 @@ export interface ExchangeReservePurseRequest {
   // if it has not been paid.
   purse_expiration: TalerProtocolTimestamp;
 }
+
+export interface ExchangePurseDeposits {
+  // Array of coins to deposit into the purse.
+  deposits: PurseDeposit[];
+}
diff --git a/packages/taler-wallet-cli/src/harness/harness.ts b/packages/taler-wallet-cli/src/harness/harness.ts
index 51f0ce649..aa58fa7a4 100644
--- a/packages/taler-wallet-cli/src/harness/harness.ts
+++ b/packages/taler-wallet-cli/src/harness/harness.ts
@@ -1940,7 +1940,7 @@ export class WalletCli {
           `wallet-${self.name}`,
           `taler-wallet-cli ${
             self.timetravelArg ?? ""
-          } --no-throttle -LTRACE --wallet-db '${
+          } --no-throttle -LTRACE --skip-defaults --wallet-db '${
             self.dbfile
           }' api '${op}' ${shellWrap(JSON.stringify(payload))}`,
         );
@@ -1990,6 +1990,7 @@ export class WalletCli {
         "--no-throttle",
         ...this.timetravelArgArr,
         "-LTRACE",
+        "--skip-defaults",
         "--wallet-db",
         this.dbfile,
         "run-until-done",
@@ -2005,6 +2006,7 @@ export class WalletCli {
       "taler-wallet-cli",
       [
         "--no-throttle",
+        "--skip-defaults",
         "-LTRACE",
         ...this.timetravelArgArr,
         "--wallet-db",
diff --git a/packages/taler-wallet-cli/src/index.ts b/packages/taler-wallet-cli/src/index.ts
index a1073dc31..aedc2146e 100644
--- a/packages/taler-wallet-cli/src/index.ts
+++ b/packages/taler-wallet-cli/src/index.ts
@@ -197,6 +197,9 @@ export const walletCli = clk
   })
   .flag("verbose", ["-V", "--verbose"], {
     help: "Enable verbose output.",
+  })
+  .flag("skipDefaults", ["--skip-defaults"], {
+    help: "Skip configuring default exchanges.",
   });
 
 type WalletCliArgsType = clk.GetArgType<typeof walletCli>;
@@ -233,7 +236,9 @@ async function withWallet<T>(
       ws: wallet,
       client: wallet.client,
     };
-    await wallet.handleCoreApiRequest("initWallet", "native-init", {});
+    await wallet.handleCoreApiRequest("initWallet", "native-init", {
+      skipDefaults: walletCliArgs.wallet.skipDefaults,
+    });
     const ret = await f(w);
     return ret;
   } catch (e) {
@@ -1159,10 +1164,7 @@ testCli
 
       const salt = getRandomBytes(32);
       tDerive.start();
-      const deriv = await AgeRestriction.commitmentDerive(
-        commitProof,
-        salt,
-      );
+      const deriv = await AgeRestriction.commitmentDerive(commitProof, salt);
       tDerive.stop();
 
       tCompare.start();
diff --git a/packages/taler-wallet-cli/src/integrationtests/test-peer-to-peer-pull.ts b/packages/taler-wallet-cli/src/integrationtests/test-peer-to-peer-pull.ts
index e78bd5a29..1be1563ce 100644
--- a/packages/taler-wallet-cli/src/integrationtests/test-peer-to-peer-pull.ts
+++ b/packages/taler-wallet-cli/src/integrationtests/test-peer-to-peer-pull.ts
@@ -17,6 +17,7 @@
 /**
  * Imports.
  */
+import { j2s } from "@gnu-taler/taler-util";
 import { WalletApiOperation } from "@gnu-taler/taler-wallet-core";
 import { GlobalTestState } from "../harness/harness.js";
 import {
@@ -57,6 +58,8 @@ export async function runPeerToPeerPullTest(t: GlobalTestState) {
     },
   );
 
+  console.log(`checkResp: ${j2s(checkResp)}`);
+
   const acceptResp = await wallet.client.call(
     WalletApiOperation.AcceptPeerPullPayment,
     {
@@ -64,6 +67,10 @@ export async function runPeerToPeerPullTest(t: GlobalTestState) {
     },
   );
 
+  const txs = await wallet.client.call(WalletApiOperation.GetTransactions, {});
+
+  console.log(`transactions: ${j2s(txs)}`);
+
   await wallet.runUntilDone();
 }
 
diff --git a/packages/taler-wallet-core/src/db.ts b/packages/taler-wallet-core/src/db.ts
index 266197eb5..bc0bb4f65 100644
--- a/packages/taler-wallet-core/src/db.ts
+++ b/packages/taler-wallet-core/src/db.ts
@@ -1669,13 +1669,27 @@ export interface PeerPushPaymentIncomingRecord {
 
   contractPriv: string;
 
-  timestampAccepted: TalerProtocolTimestamp;
+  timestamp: TalerProtocolTimestamp;
 
   contractTerms: PeerContractTerms;
 
   // FIXME: add status etc.
 }
 
+export interface PeerPullPaymentIncomingRecord {
+  peerPullPaymentIncomingId: string;
+
+  pursePub: string;
+
+  exchangeBaseUrl: string;
+
+  contractTerms: PeerContractTerms;
+
+  timestamp: TalerProtocolTimestamp;
+
+  contractPriv: string;
+}
+
 export const WalletStoresV1 = {
   coins: describeStore(
     describeContents<CoinRecord>("coins", {
@@ -1853,6 +1867,17 @@ export const WalletStoresV1 = {
       ]),
     },
   ),
+  peerPullPaymentIncoming: describeStore(
+    describeContents<PeerPullPaymentIncomingRecord>("peerPullPaymentIncoming", {
+      keyPath: "peerPullPaymentIncomingId",
+    }),
+    {
+      byExchangeAndPurse: describeIndex("byExchangeAndPurse", [
+        "exchangeBaseUrl",
+        "pursePub",
+      ]),
+    },
+  ),
   peerPullPaymentInitiation: describeStore(
     describeContents<PeerPullPaymentInitiationRecord>(
       "peerPushPaymentInitiation",
diff --git a/packages/taler-wallet-core/src/headless/helpers.ts b/packages/taler-wallet-core/src/headless/helpers.ts
index 180d19859..63967d4ad 100644
--- a/packages/taler-wallet-core/src/headless/helpers.ts
+++ b/packages/taler-wallet-core/src/headless/helpers.ts
@@ -132,6 +132,7 @@ export async function getDefaultNodeWallet2(
       });
       // Atomically move the temporary file onto the DB path.
       fs.renameSync(tmpPath, args.persistentStoragePath);
+      logger.trace("committing database done");
     };
   }
 
@@ -178,7 +179,7 @@ export async function getDefaultNodeWallet2(
     }
   }
 
-  const timer = new SetTimeoutTimerAPI()
+  const timer = new SetTimeoutTimerAPI();
 
   const w = await Wallet.create(myDb, myHttpLib, timer, workerFactory);
 
diff --git a/packages/taler-wallet-core/src/operations/exchanges.ts b/packages/taler-wallet-core/src/operations/exchanges.ts
index 6f8da5aee..94ea2cb9c 100644
--- a/packages/taler-wallet-core/src/operations/exchanges.ts
+++ b/packages/taler-wallet-core/src/operations/exchanges.ts
@@ -65,10 +65,7 @@ import {
 } from "../util/http.js";
 import { DbAccess, GetReadOnlyAccess } from "../util/query.js";
 import { RetryInfo } from "../util/retries.js";
-import {
-  WALLET_CACHE_BREAKER_CLIENT_VERSION,
-  WALLET_EXCHANGE_PROTOCOL_VERSION,
-} from "../versions.js";
+import { WALLET_EXCHANGE_PROTOCOL_VERSION } from "../versions.js";
 import { guardOperationException } from "./common.js";
 
 const logger = new Logger("exchanges.ts");
@@ -169,7 +166,6 @@ export async function downloadExchangeWithTermsOfService(
   contentType: string,
 ): Promise<ExchangeTosDownloadResult> {
   const reqUrl = new URL("terms", exchangeBaseUrl);
-  reqUrl.searchParams.set("cacheBreaker", WALLET_CACHE_BREAKER_CLIENT_VERSION);
   const headers = {
     Accept: contentType,
   };
@@ -352,7 +348,6 @@ async function downloadExchangeWireInfo(
   timeout: Duration,
 ): Promise<ExchangeWireJson> {
   const reqUrl = new URL("wire", exchangeBaseUrl);
-  reqUrl.searchParams.set("cacheBreaker", WALLET_CACHE_BREAKER_CLIENT_VERSION);
 
   const resp = await http.get(reqUrl.href, {
     timeout,
@@ -439,7 +434,6 @@ async function downloadExchangeKeysInfo(
   timeout: Duration,
 ): Promise<ExchangeKeysDownloadResult> {
   const keysUrl = new URL("keys", baseUrl);
-  keysUrl.searchParams.set("cacheBreaker", WALLET_CACHE_BREAKER_CLIENT_VERSION);
 
   const resp = await http.get(keysUrl.href, {
     timeout,
@@ -449,9 +443,6 @@ async function downloadExchangeKeysInfo(
     codecForExchangeKeysJson(),
   );
 
-  logger.trace("received /keys response");
-  logger.trace(`${j2s(exchangeKeysJsonUnchecked)}`);
-
   if (exchangeKeysJsonUnchecked.denoms.length === 0) {
     throw TalerError.fromDetail(
       TalerErrorCode.WALLET_EXCHANGE_DENOMINATIONS_INSUFFICIENT,
diff --git a/packages/taler-wallet-core/src/operations/peer-to-peer.ts b/packages/taler-wallet-core/src/operations/peer-to-peer.ts
index eca319a29..7ac165f92 100644
--- a/packages/taler-wallet-core/src/operations/peer-to-peer.ts
+++ b/packages/taler-wallet-core/src/operations/peer-to-peer.ts
@@ -19,23 +19,30 @@
  */
 import {
   AbsoluteTime,
+  AcceptPeerPullPaymentRequest,
   AcceptPeerPushPaymentRequest,
   AmountJson,
+  AmountLike,
   Amounts,
   AmountString,
   buildCodecForObject,
+  CheckPeerPullPaymentRequest,
+  CheckPeerPullPaymentResponse,
   CheckPeerPushPaymentRequest,
   CheckPeerPushPaymentResponse,
   Codec,
   codecForAmountString,
   codecForAny,
   codecForExchangeGetContractResponse,
+  CoinPublicKey,
+  constructPayPullUri,
   constructPayPushUri,
   ContractTermsUtil,
   decodeCrock,
   Duration,
   eddsaGetPublic,
   encodeCrock,
+  ExchangePurseDeposits,
   ExchangePurseMergeRequest,
   ExchangeReservePurseRequest,
   getRandomBytes,
@@ -45,7 +52,9 @@ import {
   InitiatePeerPushPaymentResponse,
   j2s,
   Logger,
+  parsePayPullUri,
   parsePayPushUri,
+  RefreshReason,
   strcmp,
   TalerProtocolTimestamp,
   UnblindedSignature,
@@ -54,14 +63,15 @@ import {
 import {
   CoinStatus,
   MergeReserveInfo,
-  OperationStatus,
   ReserveRecordStatus,
-  WithdrawalGroupRecord,
+  WalletStoresV1,
 } from "../db.js";
 import { readSuccessResponseJsonOrThrow } from "../util/http.js";
 import { InternalWalletState } from "../internal-wallet-state.js";
 import { checkDbInvariant } from "../util/invariants.js";
 import { internalCreateWithdrawalGroup } from "./withdraw.js";
+import { GetReadOnlyAccess } from "../util/query.js";
+import { createRefreshGroup } from "./refresh.js";
 
 const logger = new Logger("operations/peer-to-peer.ts");
 
@@ -105,93 +115,125 @@ interface CoinInfo {
   denomSig: UnblindedSignature;
 }
 
+export async function selectPeerCoins(
+  ws: InternalWalletState,
+  tx: GetReadOnlyAccess<{
+    exchanges: typeof WalletStoresV1.exchanges;
+    denominations: typeof WalletStoresV1.denominations;
+    coins: typeof WalletStoresV1.coins;
+  }>,
+  instructedAmount: AmountJson,
+): Promise<PeerCoinSelection | undefined> {
+  const exchanges = await tx.exchanges.iter().toArray();
+  for (const exch of exchanges) {
+    if (exch.detailsPointer?.currency !== instructedAmount.currency) {
+      continue;
+    }
+    const coins = (
+      await tx.coins.indexes.byBaseUrl.getAll(exch.baseUrl)
+    ).filter((x) => x.status === CoinStatus.Fresh);
+    const coinInfos: CoinInfo[] = [];
+    for (const coin of coins) {
+      const denom = await ws.getDenomInfo(
+        ws,
+        tx,
+        coin.exchangeBaseUrl,
+        coin.denomPubHash,
+      );
+      if (!denom) {
+        throw Error("denom not found");
+      }
+      coinInfos.push({
+        coinPub: coin.coinPub,
+        feeDeposit: denom.feeDeposit,
+        value: denom.value,
+        denomPubHash: denom.denomPubHash,
+        coinPriv: coin.coinPriv,
+        denomSig: coin.denomSig,
+      });
+    }
+    if (coinInfos.length === 0) {
+      continue;
+    }
+    coinInfos.sort(
+      (o1, o2) =>
+        -Amounts.cmp(o1.value, o2.value) ||
+        strcmp(o1.denomPubHash, o2.denomPubHash),
+    );
+    let amountAcc = Amounts.getZero(instructedAmount.currency);
+    let depositFeesAcc = Amounts.getZero(instructedAmount.currency);
+    const resCoins: {
+      coinPub: string;
+      coinPriv: string;
+      contribution: AmountString;
+      denomPubHash: string;
+      denomSig: UnblindedSignature;
+    }[] = [];
+    for (const coin of coinInfos) {
+      if (Amounts.cmp(amountAcc, instructedAmount) >= 0) {
+        const res: PeerCoinSelection = {
+          exchangeBaseUrl: exch.baseUrl,
+          coins: resCoins,
+          depositFees: depositFeesAcc,
+        };
+        return res;
+      }
+      const gap = Amounts.add(
+        coin.feeDeposit,
+        Amounts.sub(instructedAmount, amountAcc).amount,
+      ).amount;
+      const contrib = Amounts.min(gap, coin.value);
+      amountAcc = Amounts.add(
+        amountAcc,
+        Amounts.sub(contrib, coin.feeDeposit).amount,
+      ).amount;
+      depositFeesAcc = Amounts.add(depositFeesAcc, coin.feeDeposit).amount;
+      resCoins.push({
+        coinPriv: coin.coinPriv,
+        coinPub: coin.coinPub,
+        contribution: Amounts.stringify(contrib),
+        denomPubHash: coin.denomPubHash,
+        denomSig: coin.denomSig,
+      });
+    }
+    continue;
+  }
+  return undefined;
+}
+
 export async function initiatePeerToPeerPush(
   ws: InternalWalletState,
   req: InitiatePeerPushPaymentRequest,
 ): Promise<InitiatePeerPushPaymentResponse> {
+  // FIXME: actually create a record for retries here!
   const instructedAmount = Amounts.parseOrThrow(req.amount);
   const coinSelRes: PeerCoinSelection | undefined = await ws.db
     .mktx((x) => ({
       exchanges: x.exchanges,
       coins: x.coins,
       denominations: x.denominations,
+      refreshGroups: x.refreshGroups,
     }))
-    .runReadOnly(async (tx) => {
-      const exchanges = await tx.exchanges.iter().toArray();
-      for (const exch of exchanges) {
-        if (exch.detailsPointer?.currency !== instructedAmount.currency) {
-          continue;
-        }
-        const coins = (
-          await tx.coins.indexes.byBaseUrl.getAll(exch.baseUrl)
-        ).filter((x) => x.status === CoinStatus.Fresh);
-        const coinInfos: CoinInfo[] = [];
-        for (const coin of coins) {
-          const denom = await ws.getDenomInfo(
-            ws,
-            tx,
-            coin.exchangeBaseUrl,
-            coin.denomPubHash,
-          );
-          if (!denom) {
-            throw Error("denom not found");
-          }
-          coinInfos.push({
-            coinPub: coin.coinPub,
-            feeDeposit: denom.feeDeposit,
-            value: denom.value,
-            denomPubHash: denom.denomPubHash,
-            coinPriv: coin.coinPriv,
-            denomSig: coin.denomSig,
-          });
-        }
-        if (coinInfos.length === 0) {
-          continue;
-        }
-        coinInfos.sort(
-          (o1, o2) =>
-            -Amounts.cmp(o1.value, o2.value) ||
-            strcmp(o1.denomPubHash, o2.denomPubHash),
-        );
-        let amountAcc = Amounts.getZero(instructedAmount.currency);
-        let depositFeesAcc = Amounts.getZero(instructedAmount.currency);
-        const resCoins: {
-          coinPub: string;
-          coinPriv: string;
-          contribution: AmountString;
-          denomPubHash: string;
-          denomSig: UnblindedSignature;
-        }[] = [];
-        for (const coin of coinInfos) {
-          if (Amounts.cmp(amountAcc, instructedAmount) >= 0) {
-            const res: PeerCoinSelection = {
-              exchangeBaseUrl: exch.baseUrl,
-              coins: resCoins,
-              depositFees: depositFeesAcc,
-            };
-            return res;
-          }
-          const gap = Amounts.add(
-            coin.feeDeposit,
-            Amounts.sub(instructedAmount, amountAcc).amount,
-          ).amount;
-          const contrib = Amounts.min(gap, coin.value);
-          amountAcc = Amounts.add(
-            amountAcc,
-            Amounts.sub(contrib, coin.feeDeposit).amount,
-          ).amount;
-          depositFeesAcc = Amounts.add(depositFeesAcc, coin.feeDeposit).amount;
-          resCoins.push({
-            coinPriv: coin.coinPriv,
-            coinPub: coin.coinPub,
-            contribution: Amounts.stringify(contrib),
-            denomPubHash: coin.denomPubHash,
-            denomSig: coin.denomSig,
-          });
-        }
-        continue;
+    .runReadWrite(async (tx) => {
+      const sel = await selectPeerCoins(ws, tx, instructedAmount);
+      if (!sel) {
+        return undefined;
+      }
+
+      const pubs: CoinPublicKey[] = [];
+      for (const c of sel.coins) {
+        const coin = await tx.coins.get(c.coinPub);
+        checkDbInvariant(!!coin);
+        coin.currentAmount = Amounts.sub(
+          coin.currentAmount,
+          Amounts.parseOrThrow(c.contribution),
+        ).amount;
+        await tx.coins.put(coin);
       }
-      return undefined;
+
+      await createRefreshGroup(ws, tx, pubs, RefreshReason.Pay);
+
+      return sel;
     });
   logger.info(`selected p2p coins: ${j2s(coinSelRes)}`);
 
@@ -339,7 +381,7 @@ export async function checkPeerPushPayment(
         exchangeBaseUrl: exchangeBaseUrl,
         mergePriv: dec.mergePriv,
         pursePub: pursePub,
-        timestampAccepted: TalerProtocolTimestamp.now(),
+        timestamp: TalerProtocolTimestamp.now(),
         contractTerms: dec.contractTerms,
       });
     });
@@ -478,6 +520,148 @@ export async function acceptPeerPushPayment(
   });
 }
 
+/**
+ * FIXME: Bad name!
+ */
+export async function acceptPeerPullPayment(
+  ws: InternalWalletState,
+  req: AcceptPeerPullPaymentRequest,
+) {
+  const peerPullInc = await ws.db
+    .mktx((x) => ({ peerPullPaymentIncoming: x.peerPullPaymentIncoming }))
+    .runReadOnly(async (tx) => {
+      return tx.peerPullPaymentIncoming.get(req.peerPullPaymentIncomingId);
+    });
+
+  if (!peerPullInc) {
+    throw Error(
+      `can't accept unknown incoming p2p pull payment (${req.peerPullPaymentIncomingId})`,
+    );
+  }
+
+  const instructedAmount = Amounts.parseOrThrow(
+    peerPullInc.contractTerms.amount,
+  );
+  const coinSelRes: PeerCoinSelection | undefined = await ws.db
+    .mktx((x) => ({
+      exchanges: x.exchanges,
+      coins: x.coins,
+      denominations: x.denominations,
+      refreshGroups: x.refreshGroups,
+    }))
+    .runReadWrite(async (tx) => {
+      const sel = await selectPeerCoins(ws, tx, instructedAmount);
+      if (!sel) {
+        return undefined;
+      }
+
+      const pubs: CoinPublicKey[] = [];
+      for (const c of sel.coins) {
+        const coin = await tx.coins.get(c.coinPub);
+        checkDbInvariant(!!coin);
+        coin.currentAmount = Amounts.sub(
+          coin.currentAmount,
+          Amounts.parseOrThrow(c.contribution),
+        ).amount;
+        await tx.coins.put(coin);
+      }
+
+      await createRefreshGroup(ws, tx, pubs, RefreshReason.Pay);
+
+      return sel;
+    });
+  logger.info(`selected p2p coins: ${j2s(coinSelRes)}`);
+
+  if (!coinSelRes) {
+    throw Error("insufficient balance");
+  }
+
+  const pursePub = peerPullInc.pursePub;
+
+  const depositSigsResp = await ws.cryptoApi.signPurseDeposits({
+    exchangeBaseUrl: coinSelRes.exchangeBaseUrl,
+    pursePub,
+    coins: coinSelRes.coins,
+  });
+
+  const purseDepositUrl = new URL(
+    `purses/${pursePub}/deposit`,
+    coinSelRes.exchangeBaseUrl,
+  );
+
+  const depositPayload: ExchangePurseDeposits = {
+    deposits: depositSigsResp.deposits,
+  };
+
+  const httpResp = await ws.http.postJson(purseDepositUrl.href, depositPayload);
+  const resp = await readSuccessResponseJsonOrThrow(httpResp, codecForAny());
+  logger.trace(`purse deposit response: ${j2s(resp)}`);
+}
+
+export async function checkPeerPullPayment(
+  ws: InternalWalletState,
+  req: CheckPeerPullPaymentRequest,
+): Promise<CheckPeerPullPaymentResponse> {
+  const uri = parsePayPullUri(req.talerUri);
+
+  if (!uri) {
+    throw Error("got invalid taler://pay-push URI");
+  }
+
+  const exchangeBaseUrl = uri.exchangeBaseUrl;
+  const contractPriv = uri.contractPriv;
+  const contractPub = encodeCrock(eddsaGetPublic(decodeCrock(contractPriv)));
+
+  const getContractUrl = new URL(`contracts/${contractPub}`, exchangeBaseUrl);
+
+  const contractHttpResp = await ws.http.get(getContractUrl.href);
+
+  const contractResp = await readSuccessResponseJsonOrThrow(
+    contractHttpResp,
+    codecForExchangeGetContractResponse(),
+  );
+
+  const pursePub = contractResp.purse_pub;
+
+  const dec = await ws.cryptoApi.decryptContractForDeposit({
+    ciphertext: contractResp.econtract,
+    contractPriv: contractPriv,
+    pursePub: pursePub,
+  });
+
+  const getPurseUrl = new URL(`purses/${pursePub}/merge`, exchangeBaseUrl);
+
+  const purseHttpResp = await ws.http.get(getPurseUrl.href);
+
+  const purseStatus = await readSuccessResponseJsonOrThrow(
+    purseHttpResp,
+    codecForExchangePurseStatus(),
+  );
+
+  const peerPullPaymentIncomingId = encodeCrock(getRandomBytes(32));
+
+  await ws.db
+    .mktx((x) => ({
+      peerPullPaymentIncoming: x.peerPullPaymentIncoming,
+    }))
+    .runReadWrite(async (tx) => {
+      await tx.peerPullPaymentIncoming.add({
+        peerPullPaymentIncomingId,
+        contractPriv: contractPriv,
+        exchangeBaseUrl: exchangeBaseUrl,
+        pursePub: pursePub,
+        timestamp: TalerProtocolTimestamp.now(),
+        contractTerms: dec.contractTerms,
+      });
+    });
+
+  return {
+    amount: purseStatus.balance,
+    contractTerms: dec.contractTerms,
+    peerPullPaymentIncomingId,
+  };
+}
+
 export async function initiatePeerRequestForPay(
   ws: InternalWalletState,
   req: InitiatePeerPullPaymentRequest,
@@ -580,10 +764,18 @@ export async function initiatePeerRequestForPay(
 
   logger.info(`reserve merge response: ${j2s(resp)}`);
 
-  // FIXME: Now create a withdrawal operation!
+  await internalCreateWithdrawalGroup(ws, {
+    amount: Amounts.parseOrThrow(req.amount),
+    exchangeBaseUrl: req.exchangeBaseUrl,
+    reserveStatus: ReserveRecordStatus.QueryingStatus,
+    reserveKeyPair: {
+      priv: mergeReserveInfo.reservePriv,
+      pub: mergeReserveInfo.reservePub,
+    },
+  });
 
   return {
-    talerUri: constructPayPushUri({
+    talerUri: constructPayPullUri({
       exchangeBaseUrl: req.exchangeBaseUrl,
       contractPriv: econtractResp.contractPriv,
     }),
diff --git a/packages/taler-wallet-core/src/versions.ts b/packages/taler-wallet-core/src/versions.ts
index f05d884b1..c3bc142f0 100644
--- a/packages/taler-wallet-core/src/versions.ts
+++ b/packages/taler-wallet-core/src/versions.ts
@@ -34,12 +34,3 @@ export const WALLET_MERCHANT_PROTOCOL_VERSION = "2:0:1";
  * Uses libtool's current:revision:age versioning.
  */
 export const WALLET_BANK_INTEGRATION_PROTOCOL_VERSION = "0:0:0";
-
-/**
- * Cache breaker that is appended to queries such as /keys and /wire
- * to break through caching, if it has been accidentally/badly configured
- * by the exchange.
- *
- * This is only a temporary measure.
- */
-export const WALLET_CACHE_BREAKER_CLIENT_VERSION = "5";
diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts
index 0d5918886..ac81660d2 100644
--- a/packages/taler-wallet-core/src/wallet.ts
+++ b/packages/taler-wallet-core/src/wallet.ts
@@ -39,6 +39,7 @@ import {
   codecForAny,
   codecForApplyRefundFromPurchaseIdRequest,
   codecForApplyRefundRequest,
+  codecForCheckPeerPullPaymentRequest,
   codecForCheckPeerPushPaymentRequest,
   codecForConfirmPayRequest,
   codecForCreateDepositGroupRequest,
@@ -150,7 +151,9 @@ import {
   processPurchasePay,
 } from "./operations/pay.js";
 import {
+  acceptPeerPullPayment,
   acceptPeerPushPayment,
+  checkPeerPullPayment,
   checkPeerPushPayment,
   initiatePeerRequestForPay,
   initiatePeerToPeerPush,
@@ -728,7 +731,12 @@ async function dispatchRequestInternal(
   switch (operation) {
     case "initWallet": {
       ws.initCalled = true;
-      await fillDefaults(ws);
+      if (typeof payload === "object" && (payload as any).skipDefaults) {
+        logger.info("skipping defaults");
+      } else {
+        logger.info("filling defaults");
+        await fillDefaults(ws);
+      }
       return {};
     }
     case "withdrawTestkudos": {
@@ -1047,6 +1055,15 @@ async function dispatchRequestInternal(
       const req = codecForInitiatePeerPullPaymentRequest().decode(payload);
       return await initiatePeerRequestForPay(ws, req);
     }
+    case "checkPeerPullPayment": {
+      const req = codecForCheckPeerPullPaymentRequest().decode(payload);
+      return await checkPeerPullPayment(ws, req);
+    }
+    case "acceptPeerPullPayment": {
+      const req = codecForAcceptPeerPullPaymentRequest().decode(payload);
+      await acceptPeerPullPayment(ws, req);
+      return {};
+    }
   }
   throw TalerError.fromDetail(
     TalerErrorCode.WALLET_CORE_API_OPERATION_UNKNOWN,
@@ -1239,10 +1256,8 @@ class InternalWalletStateImpl implements InternalWalletState {
     const key = `${exchangeBaseUrl}:${denomPubHash}`;
     const cached = this.denomCache[key];
     if (cached) {
-      logger.trace("using cached denom");
       return cached;
     }
-    logger.trace("looking up denom denom");
     const d = await tx.denominations.get([exchangeBaseUrl, denomPubHash]);
     if (d) {
       this.denomCache[key] = d;
diff --git a/packages/taler-wallet-webextension/src/utils/index.ts b/packages/taler-wallet-webextension/src/utils/index.ts
index a48352840..2414fc86a 100644
--- a/packages/taler-wallet-webextension/src/utils/index.ts
+++ b/packages/taler-wallet-webextension/src/utils/index.ts
@@ -68,7 +68,6 @@ function timeout<T>(ms: number, promise: Promise<T>): Promise<T> {
 
 export async function queryToSlashKeys<T>(url: string): Promise<T> {
   const endpoint = new URL("keys", url);
-  endpoint.searchParams.set("cacheBreaker", new Date().getTime() + "");
 
   const query = fetch(endpoint.href)
     .catch(() => {