feat: Add experimental feature for synchronous update calls

.github/workflows/ic-ref.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Install dfx
         uses: dfinity/setup-dfx@main
         with:
-          dfx-version: "latest"
+          dfx-version: "0.22.0-beta.0"
 
       - name: Cargo cache
         uses: actions/cache@v4

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Changed `ic_utils::interfaces::management_canister::builders::InstallMode::Upgrade` variant to be `Option<CanisterUpgradeOptions>`:
   * `CanisterUpgradeOptions` is a new struct which covers the new upgrade option: `wasm_memory_persistence: Option<WasmMemoryPersistence>`.
   * `WasmMemoryPersistence` is a new enum which controls Wasm main memory retention on upgrades which has two variants: `Keep` and `Replace`.
+* Added an experimental feature, `experimental_sync_call`, to enable synchronous update calls. The feature adds a toggle to the `ReqwestTransport` and `HyperTransport` to enable synchronous update calls.
 
 ## [0.36.0] - 2024-06-04
 

ic-agent/Cargo.toml

@@ -104,6 +104,7 @@ web-sys = { version = "0.3", features = [
 
 [features]
 default = ["pem", "reqwest"]
+experimental_sync_call = []
 reqwest = ["dep:reqwest"]
 hyper = [
     "dep:hyper",

ic-agent/src/agent/agent_error.rs

@@ -205,6 +205,10 @@ pub enum AgentError {
     /// Route provider failed to generate a url for some reason.
     #[error("Route provider failed to generate url: {0}")]
     RouteProviderError(String),
+
+    /// Invalid HTTP response.
+    #[error("Invalid HTTP response: {0}")]
+    InvalidHttpResponse(String),
 }
 
 impl PartialEq for AgentError {