From bb1a05ef5ca4cfc12815e4e1eab3f53e90ba47f3 Mon Sep 17 00:00:00 2001
From: Lukas Korba <lukas.korba@seznam.cz>
Date: Thu, 29 Feb 2024 13:31:27 +0100
Subject: [PATCH] Enable ZIP 317 fees

Closes Electric-Coin-Company/zcash-swift-wallet-sdk#1186.
---
 CHANGELOG.md                                            | 7 +++++++
 Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 947fba7a..4e6251f2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@ and this library adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 # Unreleased
 
+## Changed
+
+### [#1186] Enable ZIP 317 fees
+- The SDK now generates transactions using [ZIP 317](https://zips.z.cash/zip-0317) fees,
+  instead of a fixed fee of 10,000 Zatoshi. Use `Proposal.totalFeeRequired` to check the
+  total fee for a transfer before creating it.
+
 ## Added
 
 ### [#1204] Expose APIs for working with transaction proposals
diff --git a/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift b/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift
index 99d128a6..290bce63 100644
--- a/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift
+++ b/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift
@@ -13,7 +13,7 @@ let globalDBLock = NSLock()
 
 actor ZcashRustBackend: ZcashRustBackendWelding {
     let minimumConfirmations: UInt32 = 10
-    let useZIP317Fees = false
+    let useZIP317Fees = true
 
     let dbData: (String, UInt)
     let fsBlockDbRoot: (String, UInt)