feat: route all update calls to synchronous v3 endpoint

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * `Url` now implements `RouteProvider`.
 * Add canister snapshot methods to `ManagementCanister`.
 * Add `AllowedViewers` to `LogVisibility` enum.
+* Remove the cargo feature, `experimental_sync_call`, and enable synchronous update calls by default. 
 
 ## [0.37.1] - 2024-07-25
 

ic-agent/Cargo.toml

@@ -84,7 +84,6 @@ web-sys = { version = "0.3", features = [
 
 [features]
 default = ["pem"]
-experimental_sync_call = []
 pem = ["dep:pem"]
 ic_ref_tests = [
     "default",

ic-agent/src/agent/agent_config.rs

@@ -28,9 +28,6 @@ pub struct AgentConfig {
     pub max_response_body_size: Option<usize>,
     /// See [`with_max_tcp_error_retries`](super::AgentBuilder::with_max_tcp_error_retries).
     pub max_tcp_error_retries: usize,
-    /// See [`with_call_v3_endpoint`](super::AgentBuilder::with_call_v3_endpoint).
-    #[cfg(feature = "experimental_sync_call")]
-    pub use_call_v3_endpoint: bool,
 }
 
 impl Default for AgentConfig {
@@ -45,8 +42,6 @@ impl Default for AgentConfig {
             route_provider: None,
             max_response_body_size: None,
             max_tcp_error_retries: 0,
-            #[cfg(feature = "experimental_sync_call")]
-            use_call_v3_endpoint: false,
         }
     }
 }

ic-agent/src/agent/agent_test.rs

@@ -18,8 +18,6 @@ wasm_bindgen_test::wasm_bindgen_test_configure!(run_in_browser);
 
 fn make_agent(url: &str) -> Agent {
     let builder = Agent::builder().with_url(url);
-    #[cfg(feature = "experimental_sync_call")]
-    let builder = builder.with_call_v3_endpoint();
     builder.with_verify_query_signatures(false).build().unwrap()
 }
 
@@ -168,20 +166,7 @@ async fn query_rejected() -> Result<(), AgentError> {
 #[cfg_attr(not(target_family = "wasm"), tokio::test)]
 #[cfg_attr(target_family = "wasm", wasm_bindgen_test)]
 async fn call_error() -> Result<(), AgentError> {
-    let version = if cfg!(feature = "experimental_sync_call") {
-        "3"
-    } else {
-        "2"
-    };
-
-    let (call_mock, url) = mock(
-        "POST",
-        format!("/api/v{version}/canister/aaaaa-aa/call").as_str(),
-        500,
-        vec![],
-        None,
-    )
-    .await;
+    let (call_mock, url) = mock("POST", "/api/v3/canister/aaaaa-aa/call", 500, vec![], None).await;
 
     let agent = make_agent(&url);
 
@@ -211,15 +196,9 @@ async fn call_rejected() -> Result<(), AgentError> {
 
     let body = serde_cbor::to_vec(&reject_body).unwrap();
 
-    let version = if cfg!(feature = "experimental_sync_call") {
-        "3"
-    } else {
-        "2"
-    };
-
     let (call_mock, url) = mock(
         "POST",
-        format!("/api/v{version}/canister/aaaaa-aa/call").as_str(),
+        "/api/v3/canister/aaaaa-aa/call",
         200,
         body,
         Some("application/cbor"),
@@ -257,15 +236,9 @@ async fn call_rejected_without_error_code() -> Result<(), AgentError> {
 
     let body = serde_cbor::to_vec(&reject_body).unwrap();
 
-    let version = if cfg!(feature = "experimental_sync_call") {
-        "3"
-    } else {
-        "2"
-    };
-
     let (call_mock, url) = mock(
         "POST",
-        format!("/api/v{version}/canister/{}/call", canister_id_str).as_str(),
+        format!("/api/v3/canister/{}/call", canister_id_str).as_str(),
         200,
         body,
         Some("application/cbor"),

ic-agent/src/agent/builder.rs

@@ -110,19 +110,6 @@ impl AgentBuilder {
         self
     }
 
-    /// Use call v3 endpoint for synchronous update calls.
-    /// __This is an experimental feature, and should not be used in production,
-    /// as the endpoint is not available yet on the mainnet IC.__
-    ///
-    /// By enabling this feature, the agent will use the `v3` endpoint for update calls,
-    /// which is synchronous. This means the replica will wait for a certificate for the call,
-    /// meaning the agent will not need to poll for the certificate.
-    #[cfg(feature = "experimental_sync_call")]
-    pub fn with_call_v3_endpoint(mut self) -> Self {
-        self.config.use_call_v3_endpoint = true;
-        self
-    }
-
     /// Retry up to the specified number of times upon encountering underlying TCP errors.
     pub fn with_max_tcp_error_retries(mut self, retries: usize) -> Self {
         self.config.max_tcp_error_retries = retries;

ic-agent/src/agent/http_transport/reqwest_transport.rs

@@ -20,8 +20,6 @@ pub struct ReqwestTransport {
     client: Client,
     max_response_body_size: Option<usize>,
     max_tcp_error_retries: usize,
-    #[allow(dead_code)]
-    use_call_v3_endpoint: bool,
 }
 
 impl ReqwestTransport {
@@ -69,7 +67,6 @@ impl ReqwestTransport {
             client,
             max_response_body_size: None,
             max_tcp_error_retries: 0,
-            use_call_v3_endpoint: false,
         })
     }
 
@@ -96,16 +93,6 @@ impl ReqwestTransport {
             ..self
         }
     }
-
-    /// Equivalent to [`AgentBuilder::with_call_v3_endpoint`].
-    #[cfg(feature = "experimental_sync_call")]
-    #[deprecated(since = "0.38.0", note = "Use AgentBuilder::with_call_v3_endpoint")]
-    pub fn with_use_call_v3_endpoint(self) -> Self {
-        ReqwestTransport {
-            use_call_v3_endpoint: true,
-            ..self
-        }
-    }
 }
 
 impl AgentBuilder {
@@ -119,10 +106,6 @@ impl AgentBuilder {
         if let Some(max_size) = transport.max_response_body_size {
             builder = builder.with_max_response_body_size(max_size);
         }
-        #[cfg(feature = "experimental_sync_call")]
-        if transport.use_call_v3_endpoint {
-            builder = builder.with_call_v3_endpoint();
-        }
         builder
     }
     #[doc(hidden)]

ic-agent/src/agent/mod.rs

@@ -156,7 +156,6 @@ pub struct Agent {
     max_response_body_size: Option<usize>,
     #[allow(dead_code)]
     max_tcp_error_retries: usize,
-    use_call_v3_endpoint: bool,
 }
 
 impl fmt::Debug for Agent {
@@ -203,16 +202,6 @@ impl Agent {
             concurrent_requests_semaphore: Arc::new(Semaphore::new(config.max_concurrent_requests)),
             max_response_body_size: config.max_response_body_size,
             max_tcp_error_retries: config.max_tcp_error_retries,
-            use_call_v3_endpoint: {
-                #[cfg(feature = "experimental_sync_call")]
-                {
-                    config.use_call_v3_endpoint
-                }
-                #[cfg(not(feature = "experimental_sync_call"))]
-                {
-                    false
-                }
-            },
         })
     }
 
@@ -348,17 +337,7 @@ impl Agent {
         serialized_bytes: Vec<u8>,
     ) -> Result<TransportCallResponse, AgentError> {
         let _permit = self.concurrent_requests_semaphore.acquire().await;
-        let api_version = if self.use_call_v3_endpoint {
-            "v3"
-        } else {
-            "v2"
-        };
-
-        let endpoint = format!(
-            "api/{}/canister/{}/call",
-            api_version,
-            effective_canister_id.to_text()
-        );
+        let endpoint = format!("api/v3/canister/{}/call", effective_canister_id.to_text());
         let (status_code, response_body) = self
             .execute(Method::POST, &endpoint, Some(serialized_bytes))
             .await?;
@@ -367,15 +346,7 @@ impl Agent {
             return Ok(TransportCallResponse::Accepted);
         }
 
-        // status_code == OK (200)
-        if self.use_call_v3_endpoint {
-            serde_cbor::from_slice(&response_body).map_err(AgentError::InvalidCborData)
-        } else {
-            let reject_response = serde_cbor::from_slice::<RejectResponse>(&response_body)
-                .map_err(AgentError::InvalidCborData)?;
-
-            Err(AgentError::UncertifiedReject(reject_response))
-        }
+        serde_cbor::from_slice(&response_body).map_err(AgentError::InvalidCborData)
     }
 
     /// The simplest way to do a query call; sends a byte array and will return a byte vector.

ref-tests/Cargo.toml

@@ -19,6 +19,3 @@ tokio = { workspace = true, features = ["full"] }
 [dev-dependencies]
 serde_cbor = { workspace = true }
 ic-certification = { workspace = true }
-
-[features]
-experimental_sync_call = ["ic-agent/experimental_sync_call"]

ref-tests/src/utils.rs

@@ -98,8 +98,6 @@ pub async fn create_agent(identity: impl Identity + 'static) -> Result<Agent, St
         .parse::<u32>()
         .expect("Could not parse the IC_REF_PORT environment variable as an integer.");
     let builder = Agent::builder().with_url(format!("http://127.0.0.1:{port}"));
-    #[cfg(feature = "experimental_sync_call")]
-    let builder = builder.with_call_v3_endpoint();
     builder
         .with_identity(identity)
         .build()