Drop the unnecessary networkPassphrase parameter

CHANGELOG.md

@@ -7,9 +7,9 @@ A breaking change will get clearly marked in this log.
 
 ### Breaking Changes
 * The `soroban-client` library ([stellar/js-soroban-client](https://github.com/stellar/js-soroban-client)) has been merged into this package, causing significant breaking changes in the module structure ([#860](https://github.com/stellar/js-stellar-sdk/pull/860)):
-
   - The namespaces have changed to move each server-dependent component into its own module. Shared components (e.g. `TransactionBuilder`) are still in the top level, Horizon-specific interactions are in the `Horizon` namespace (i.e. `Server` is now `Horizon.Server`), and new Soroban RPC interactions are in the `SorobanRpc` namespace.
   - There is a [detailed migration guide](https://gist.github.com/Shaptic/5ce4f16d9cce7118f391fbde398c2f30) available to outline both the literal (i.e. necessary code changes) and philosophical (i.e. how to find certain functionality) changes needed to adapt to this merge.
+* The `SorobanRpc.Server.prepareTransaction` and `SorobanRpc.assembleTransaction` methods no longer need an optional `networkPassphrase` parameter, because it is implicitly part of the transaction already ([#870](https://github.com/stellar/js-stellar-sdk/pull/870)).
 
 
 ## [v11.0.0-beta.4](https://github.com/stellar/js-stellar-sdk/compare/v11.0.0-beta.3...v11.0.0-beta.4)

src/horizon/server.ts

@@ -322,9 +322,7 @@ export class Server {
           return response.data;
         }
 
-        // TODO: fix stellar-base types.
-        const responseXDR: xdr.TransactionResult = (xdr.TransactionResult
-          .fromXDR as any)(response.data.result_xdr, "base64");
+        const responseXDR = xdr.TransactionResult.fromXDR(response.data.result_xdr, "base64");
 
         // TODO: fix stellar-base types.
         const results = (responseXDR as any).result().value();

src/soroban/server.ts

@@ -532,9 +532,6 @@ export class Server {
    *    from the simulation. In other words, if you include auth entries, you
    *    don't care about the auth returned from the simulation. Other fields
    *    (footprint, etc.) will be filled as normal.
-   * @param {string} [networkPassphrase]  explicitly provide a network
-   *    passphrase (default: requested from the server via
-   *    {@link Server.getNetwork}).
    *
    * @returns {Promise<Transaction | FeeBumpTransaction>}   a copy of the
    *    transaction with the expected authorizations (in the case of
@@ -544,7 +541,8 @@ export class Server {
    *
    * @see assembleTransaction
    * @see https://soroban.stellar.org/api/methods/simulateTransaction
-   * @throws {jsonrpc.Error<any> | Error}   if simulation fails
+   * @throws {jsonrpc.Error<any>|Error|Api.SimulateTransactionErrorResponse}
+   *    if simulation fails
    * @example
    * const contractId = 'CA3D5KRYM6CB7OWQ6TWYRR3Z4T7GNZLKERYNZGGA5SOAOPIFY6YQGAXE';
    * const contract = new StellarSdk.Contract(contractId);
@@ -576,24 +574,13 @@ export class Server {
    *   console.log("errorResultXdr:", result.errorResultXdr);
    * });
    */
-  public async prepareTransaction(
-    transaction: Transaction | FeeBumpTransaction,
-    networkPassphrase?: string
-  ): Promise<Transaction | FeeBumpTransaction> {
-    const [{ passphrase }, simResponse] = await Promise.all([
-      networkPassphrase
-        ? Promise.resolve({ passphrase: networkPassphrase })
-        : this.getNetwork(),
-      this.simulateTransaction(transaction)
-    ]);
+  public async prepareTransaction(tx: Transaction | FeeBumpTransaction) {
+    const simResponse = await this.simulateTransaction(tx);
     if (Api.isSimulationError(simResponse)) {
       throw simResponse.error;
     }
-    if (!simResponse.result) {
-      throw new Error('transaction simulation failed');
-    }
 
-    return assembleTransaction(transaction, passphrase, simResponse).build();
+    return assembleTransaction(tx, simResponse).build();
   }
 
   /**

src/soroban/transaction.ts

@@ -29,7 +29,6 @@ import { parseRawSimulation } from './parsers';
  */
 export function assembleTransaction(
   raw: Transaction | FeeBumpTransaction,
-  networkPassphrase: string,
   simulation:
     | Api.SimulateTransactionResponse
     | Api.RawSimulateTransactionResponse
@@ -38,7 +37,6 @@ export function assembleTransaction(
     // TODO: Handle feebump transactions
     return assembleTransaction(
       raw.innerTransaction,
-      networkPassphrase,
       simulation
     );
   }
@@ -70,7 +68,7 @@ export function assembleTransaction(
     fee: (classicFeeNum + minResourceFeeNum).toString(),
     // apply the pre-built Soroban Tx Data from simulation onto the Tx
     sorobanData: success.transactionData.build(),
-    networkPassphrase
+    networkPassphrase: raw.networkPassphrase
   });
 
   switch (raw.operations[0].type) {

test/unit/transaction_test.js

@@ -61,7 +61,7 @@ describe("assembleTransaction", () => {
 
     function singleContractFnTransaction(auth) {
       return new StellarSdk.TransactionBuilder(source, { fee: 100 })
-        .setNetworkPassphrase("Test")
+        .setNetworkPassphrase(networkPassphrase)
         .setTimeout(StellarSdk.TimeoutInfinite)
         .addOperation(
           StellarSdk.Operation.invokeHostFunction({
@@ -82,7 +82,6 @@ describe("assembleTransaction", () => {
       const txn = singleContractFnTransaction();
       const result = SorobanRpc.assembleTransaction(
         txn,
-        networkPassphrase,
         simulationResponse,
       ).build();
 
@@ -100,7 +99,6 @@ describe("assembleTransaction", () => {
       const txn = singleContractFnTransaction();
       const result = SorobanRpc.assembleTransaction(
         txn,
-        networkPassphrase,
         simulationResponse,
       ).build();
 
@@ -143,11 +141,7 @@ describe("assembleTransaction", () => {
       const txn = singleContractFnTransaction();
       let simulateResp = JSON.parse(JSON.stringify(simulationResponse));
       simulateResp.results[0].auth = null;
-      const result = SorobanRpc.assembleTransaction(
-        txn,
-        networkPassphrase,
-        simulateResp,
-      ).build();
+      const result = SorobanRpc.assembleTransaction(txn, simulateResp).build();
 
       expect(
         result
@@ -176,7 +170,7 @@ describe("assembleTransaction", () => {
         .build();
 
       expect(() => {
-        SorobanRpc.assembleTransaction(txn, networkPassphrase, {
+        SorobanRpc.assembleTransaction(txn, {
           transactionData: {},
           events: [],
           minResourceFee: "0",
@@ -208,7 +202,6 @@ describe("assembleTransaction", () => {
 
         const tx = SorobanRpc.assembleTransaction(
           txn,
-          networkPassphrase,
           simulationResponse,
         ).build();
         expect(tx.operations[0].type).to.equal(op.body().switch().name);
@@ -219,7 +212,6 @@ describe("assembleTransaction", () => {
       const txn = singleContractFnTransaction([fnAuth, fnAuth, fnAuth]);
       const tx = SorobanRpc.assembleTransaction(
         txn,
-        networkPassphrase,
         simulationResponse,
       ).build();