v0.2.1-pre.005

2026-08-17 20:27:44 +02:00
parent bc71fba289
commit ac1b1033c4
18 changed files with 1284 additions and 49 deletions
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,12 +1,12 @@
 # file: Cargo.toml
-# version: 102
+# version: 103

 [workspace]
 resolver = "3"
 members = ["crates/ksp-app-config-desk", "crates/ksp-config-lib", "crates/ksp-core-lib", "crates/ksp-logging-lib", "crates/ksp-onchain-transport-lib"]

 [workspace.package]
-version = "0.2.1-pre.4.fix.2"
+version = "0.2.1-pre.5"
 edition = "2024"
 license = "MIT"
 repository = "https://git.sasedev.com/Sasedev/khadhroony-solana-project"
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -1,5 +1,5 @@
 <!-- file: ROADMAP.md -->
-<!-- version: 30 -->
+<!-- version: 31 -->

 # Roadmap KSP

@@ -41,7 +41,7 @@ Le roadmap décrit les objectifs à atteindre et les grandes étapes prévues. U
 ### Cadrage

 - [X] `0.2.0` — Audit bot3, ordre fonctionnel de `0.2.x`, architecture durable, discipline de sizing et pipeline RAW/CORE/DECODE/SPECIALIZED stabilisés.
- [/] `0.2.1` — HTTP foundation en cours : matrice 52+14, crate/settings/JSON-RPC/registry, client/pool/routing et résilience runtime (RPS/burst, concurrence, cooldown, deadline et retry borné/no-resend) acquis ; 4 canaris, Config standard et clôture restent planifiés.
+- [/] `0.2.1` — HTTP foundation en cours : matrice 52+14, crate/settings/JSON-RPC/registry, client/pool/routing, résilience runtime et exécution HTTP acquises ; les 4 canaris typés (`getBalance`, `getGenesisHash`, `getHealth`, `getVersion`) sont matérialisés, Config standard et clôture restent planifiés.

 ### Releases fonctionnelles décidées/pressenties

--- a/crates/ksp-onchain-transport-lib/tests/dependency_boundary.rs
+++ b/crates/ksp-onchain-transport-lib/tests/dependency_boundary.rs
@@ -1,33 +1,27 @@
-// file: crates/ksp-onchain-transport-lib/tests/dependency_boundary.rs
-// version: 5
+// file: crates/ksp-core-lib/tests/workspace_dependencies.rs
+// version: 1

-//! Integration canary for the direct dependency firewall of `ksp-onchain-transport-lib`.
+//! Workspace-level dependency policy canaries owned by the foundational KSP test surface.

-#[test]
-fn transport_manifest_preserves_ksp_dependency_firewall() {
-    let manifest_path = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("Cargo.toml");
-    let manifest = std::fs::read_to_string(manifest_path).expect("transport manifest must be readable during integration tests");
-    for forbidden in ["ksp-config-lib", "ksp-store-api", "ksp-store-lib", "ksp-program-api", "ksp-program-lib", "tracing =", "tracing."] {
-        assert!(!manifest.contains(forbidden), "forbidden direct transport dependency detected: {forbidden}");
-    }
-    assert!(manifest.contains("ksp-core-lib"));
-    assert!(manifest.contains("ksp-logging-lib"));
-    assert!(manifest.contains("reqwest = { workspace = true, features = [\"rustls\"] }"));
-    assert!(manifest.contains("tokio = { workspace = true, features = [\"macros\", \"sync\", \"time\"] }"));
-    assert!(manifest.contains("[dev-dependencies]"));
-    assert!(manifest.contains("tokio = { workspace = true, features = [\"rt\"] }"));
+fn workspace_root() -> std::path::PathBuf {
+    let manifest_directory = std::path::Path::new(env!("CARGO_MANIFEST_DIR"));
+    let parent = manifest_directory.parent();
+    assert!(parent.is_some(), "core crate must have a crates directory parent");
+    let parent = match parent {
+        std::option::Option::Some(value) => value,
+        std::option::Option::None => return manifest_directory.to_path_buf(),
+    };
+    let root = parent.parent();
+    assert!(root.is_some(), "core crate must have a workspace root");
+    return match root {
+        std::option::Option::Some(value) => value.to_path_buf(),
+        std::option::Option::None => parent.to_path_buf(),
+    };
 }

 #[test]
 fn workspace_dependency_table_does_not_activate_consumer_features() {
-    let manifest_directory = std::path::Path::new(env!("CARGO_MANIFEST_DIR"));
-    let workspace_root = manifest_directory.parent().and_then(std::path::Path::parent);
-    assert!(workspace_root.is_some(), "transport crate must have a workspace root");
-    let workspace_root = match workspace_root {
-        std::option::Option::Some(value) => value,
-        std::option::Option::None => return,
-    };
-    let manifest_path = workspace_root.join("Cargo.toml");
+    let manifest_path = workspace_root().join("Cargo.toml");
    let manifest = std::fs::read_to_string(manifest_path.as_path());
    assert!(manifest.is_ok(), "workspace manifest must be readable during integration tests");
    let manifest = match manifest {
@@ -57,3 +51,18 @@ fn workspace_dependency_table_does_not_activate_consumer_features() {
        }
    }
 }
+
+#[test]
+fn transport_manifest_preserves_ksp_dependency_firewall() {
+    let manifest_path = workspace_root().join("crates/ksp-onchain-transport-lib/Cargo.toml");
+    let manifest = std::fs::read_to_string(manifest_path).expect("transport manifest must be readable during workspace integration tests");
+    for forbidden in ["ksp-config-lib", "ksp-store-api", "ksp-store-lib", "ksp-program-api", "ksp-program-lib", "tracing =", "tracing."] {
+        assert!(!manifest.contains(forbidden), "forbidden direct transport dependency detected: {forbidden}");
+    }
+    assert!(manifest.contains("ksp-core-lib"));
+    assert!(manifest.contains("ksp-logging-lib"));
+    assert!(manifest.contains("reqwest = { workspace = true, features = [\"rustls\"] }"));
+    assert!(manifest.contains("tokio = { workspace = true, features = [\"macros\", \"sync\", \"time\"] }"));
+    assert!(manifest.contains("[dev-dependencies]"));
+    assert!(manifest.contains("tokio = { workspace = true, features = [\"rt\"] }"));
+}
--- a/crates/ksp-onchain-transport-lib/fixtures/http/get_balance.success.json
+++ b/crates/ksp-onchain-transport-lib/fixtures/http/get_balance.success.json
@@ -0,0 +1 @@
+{"jsonrpc":"2.0","result":{"context":{"apiVersion":"3.1.8","slot":123456789},"value":424242},"id":1}
--- a/crates/ksp-onchain-transport-lib/fixtures/http/get_genesis_hash.success.json
+++ b/crates/ksp-onchain-transport-lib/fixtures/http/get_genesis_hash.success.json
@@ -0,0 +1 @@
+{"jsonrpc":"2.0","result":"GH7ome3EiwEr7tu9JuTh2dpYWBJK3z69Xm1ZE3MEE6JC","id":1}
--- a/crates/ksp-onchain-transport-lib/fixtures/http/get_health.success.json
+++ b/crates/ksp-onchain-transport-lib/fixtures/http/get_health.success.json
@@ -0,0 +1 @@
+{"jsonrpc":"2.0","result":"ok","id":1}
--- a/crates/ksp-onchain-transport-lib/fixtures/http/get_version.success.json
+++ b/crates/ksp-onchain-transport-lib/fixtures/http/get_version.success.json
@@ -0,0 +1 @@
+{"jsonrpc":"2.0","result":{"solana-core":"3.1.8","feature-set":2891131721},"id":1}
--- a/crates/ksp-onchain-transport-lib/src/client.rs
+++ b/crates/ksp-onchain-transport-lib/src/client.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-onchain-transport-lib/src/client.rs
-// version: 2
+// version: 3

 /// Passive runtime availability reported for one logical HTTP endpoint or role.
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
@@ -163,6 +163,26 @@ impl HttpEndpointSnapshot {
    }
 }

+pub(crate) struct HttpEndpointHttpResponse {
+    status: u16,
+    retry_after: std::option::Option<std::time::Duration>,
+    body: std::vec::Vec<u8>,
+}
+
+impl HttpEndpointHttpResponse {
+    pub(crate) const fn status(&self) -> u16 {
+        return self.status;
+    }
+
+    pub(crate) const fn retry_after(&self) -> std::option::Option<std::time::Duration> {
+        return self.retry_after;
+    }
+
+    pub(crate) fn body(&self) -> &[u8] {
+        return self.body.as_slice();
+    }
+}
+
 /// Shareable logical HTTP endpoint client owned by KSP Transport.
 ///
 /// The underlying `reqwest::Client` owns socket pooling. KSP keeps the configured URL private from diagnostics and exposes only safe routing metadata.
@@ -173,7 +193,7 @@ pub struct HttpEndpointClient {

 struct HttpEndpointClientInner {
    settings: crate::HttpEndpointSettings,
-    _client: reqwest::Client,
+    client: reqwest::Client,
    role_runtimes: std::vec::Vec<std::sync::Arc<crate::resilience::HttpRoleRuntime>>,
 }

@@ -212,7 +232,7 @@ impl HttpEndpointClient {
            role_count = settings.roles().len(),
            "created logical HTTP endpoint client"
        );
-        return std::result::Result::Ok(Self { inner: std::sync::Arc::new(HttpEndpointClientInner { settings, _client: client, role_runtimes }) });
+        return std::result::Result::Ok(Self { inner: std::sync::Arc::new(HttpEndpointClientInner { settings, client, role_runtimes }) });
    }

    /// Returns the endpoint identity used for safe diagnostics and routing.
@@ -245,6 +265,36 @@ impl HttpEndpointClient {
        return self.inner.settings.request_timeout();
    }

+    pub(crate) async fn post_json_rpc(&self, payload: &str, timeout: std::time::Duration) -> ksp_core_lib::Result<HttpEndpointHttpResponse> {
+        if timeout.is_zero() {
+            return std::result::Result::Err(
+                ksp_core_lib::Error::new(crate::ERROR_CODE_TIMEOUT, "HTTP JSON-RPC request budget expired before dispatch")
+                    .with_context("endpoint_name", self.name()),
+            );
+        }
+        let send_result = self
+            .inner
+            .client
+            .post(self.inner.settings.url().as_str())
+            .header(reqwest::header::CONTENT_TYPE, "application/json")
+            .body(payload.to_owned())
+            .timeout(timeout)
+            .send()
+            .await;
+        let response = match send_result {
+            std::result::Result::Ok(response) => response,
+            std::result::Result::Err(error) => return std::result::Result::Err(map_reqwest_error(self.name(), error)),
+        };
+        let status = response.status().as_u16();
+        let retry_after = parse_retry_after(response.headers());
+        let body_result = response.bytes().await;
+        let body = match body_result {
+            std::result::Result::Ok(body) => body.to_vec(),
+            std::result::Result::Err(error) => return std::result::Result::Err(map_reqwest_error(self.name(), error)),
+        };
+        return std::result::Result::Ok(HttpEndpointHttpResponse { status, retry_after, body });
+    }
+
    /// Returns whether one enabled role can serve the requested capability structurally.
    #[must_use]
    pub fn supports(&self, role: &crate::HttpRoleName, request_kind: &crate::HttpRequestKind) -> bool {
@@ -410,6 +460,33 @@ fn fallback_role_snapshot(role: &crate::HttpEndpointRoleSettings, request_kinds:
    };
 }

+fn map_reqwest_error(endpoint_name: &str, error: reqwest::Error) -> ksp_core_lib::Error {
+    let code = if error.is_timeout() {
+        crate::ERROR_CODE_TIMEOUT
+    } else if error.is_connect() {
+        crate::ERROR_CODE_HTTP_CONNECTION_FAILED
+    } else {
+        crate::ERROR_CODE_HTTP_REQUEST_FAILED
+    };
+    return ksp_core_lib::Error::new(code, "HTTP JSON-RPC request failed").with_context("endpoint_name", endpoint_name).with_source(error);
+}
+
+fn parse_retry_after(headers: &reqwest::header::HeaderMap) -> std::option::Option<std::time::Duration> {
+    let value = match headers.get(reqwest::header::RETRY_AFTER) {
+        std::option::Option::Some(value) => value,
+        std::option::Option::None => return std::option::Option::None,
+    };
+    let text = match value.to_str() {
+        std::result::Result::Ok(text) => text.trim(),
+        std::result::Result::Err(_) => return std::option::Option::None,
+    };
+    let seconds = match text.parse::<u64>() {
+        std::result::Result::Ok(seconds) => seconds,
+        std::result::Result::Err(_) => return std::option::Option::None,
+    };
+    return std::option::Option::Some(std::time::Duration::from_secs(seconds));
+}
+
 fn build_reqwest_client(settings: &crate::HttpEndpointSettings) -> std::result::Result<reqwest::Client, reqwest::Error> {
    let mut builder = reqwest::Client::builder()
        .connect_timeout(settings.connect_timeout())
--- a/crates/ksp-onchain-transport-lib/src/executor.rs
+++ b/crates/ksp-onchain-transport-lib/src/executor.rs
@@ -0,0 +1,232 @@
+// file: crates/ksp-onchain-transport-lib/src/executor.rs
+// version: 1
+
+const HTTP_REQUEST_TIMEOUT: u16 = 408;
+const HTTP_TOO_MANY_REQUESTS: u16 = 429;
+const HTTP_INTERNAL_SERVER_ERROR: u16 = 500;
+const HTTP_BAD_GATEWAY: u16 = 502;
+const HTTP_SERVICE_UNAVAILABLE: u16 = 503;
+const HTTP_GATEWAY_TIMEOUT: u16 = 504;
+
+impl crate::HttpTransportPool {
+    /// Executes one audited standard Solana HTTP JSON-RPC method through KSP routing, admission and bounded retry policy.
+    ///
+    /// This generic transport surface intentionally returns the raw JSON result. Typed method coverage remains explicit and is provided separately by
+    /// method-specific KSP adapters.
+    pub async fn execute_standard_rpc(
+        &self,
+        role: &crate::HttpRoleName,
+        method: &crate::HttpRpcMethodDescriptor,
+        params: std::vec::Vec<serde_json::Value>,
+    ) -> ksp_core_lib::Result<serde_json::Value> {
+        let support = method.ensure_runtime_supported();
+        if let std::result::Result::Err(error) = support {
+            return std::result::Result::Err(error);
+        }
+        let request_id = self.next_request_id();
+        let request_result = crate::JsonRpcRequest::new(request_id, method.method(), params);
+        let request = match request_result {
+            std::result::Result::Ok(request) => request,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let payload_result = request.to_json_string();
+        let payload = match payload_result {
+            std::result::Result::Ok(payload) => payload,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let request_kind = crate::HttpRequestKind::new(method.request_kind());
+        let timeout_result = self.common_request_timeout(role, &request_kind);
+        let timeout = match timeout_result {
+            std::result::Result::Ok(timeout) => timeout,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let started = std::time::Instant::now();
+        let deadline = match started.checked_add(timeout) {
+            std::option::Option::Some(deadline) => deadline,
+            std::option::Option::None => return execution_timeout(method, "HTTP JSON-RPC execution deadline could not be represented"),
+        };
+        let mut completed_retries = 0_u32;
+        loop {
+            let remaining = remaining_budget(deadline);
+            if remaining.is_zero() {
+                return execution_timeout(method, "HTTP JSON-RPC execution deadline expired before transport attempt");
+            }
+            let permit_result = self.acquire_for_request_kind_with_timeout(role, &request_kind, remaining).await;
+            let permit = match permit_result {
+                std::result::Result::Ok(permit) => permit,
+                std::result::Result::Err(error) => return std::result::Result::Err(error),
+            };
+            let send_timeout = std::cmp::min(remaining_budget(deadline), permit.client().request_timeout());
+            let response_result = permit.client().post_json_rpc(payload.as_str(), send_timeout).await;
+            let response = match response_result {
+                std::result::Result::Ok(response) => response,
+                std::result::Result::Err(error) => {
+                    permit.record_failure();
+                    let cause = retry_cause_for_error(&error);
+                    let dispatch_state = dispatch_state_for_error(&error);
+                    let decision =
+                        crate::evaluate_transport_retry(method, self.retry_settings(), cause, dispatch_state, completed_retries, std::option::Option::None);
+                    drop(permit);
+                    if let std::option::Option::Some(delay) = decision.delay() {
+                        let waited = wait_retry_delay(delay, deadline).await;
+                        if waited {
+                            completed_retries = completed_retries.saturating_add(1);
+                            continue;
+                        }
+                        return execution_timeout(method, "HTTP JSON-RPC retry delay exceeded the common request deadline");
+                    }
+                    return std::result::Result::Err(error);
+                },
+            };
+            let status = response.status();
+            if status == HTTP_TOO_MANY_REQUESTS {
+                let provider_retry_after = response.retry_after();
+                permit.record_rate_limited(provider_retry_after);
+                let decision = crate::evaluate_transport_retry(
+                    method,
+                    self.retry_settings(),
+                    crate::HttpRetryCause::RateLimited,
+                    crate::HttpDispatchState::DispatchedAmbiguous,
+                    completed_retries,
+                    provider_retry_after,
+                );
+                drop(permit);
+                if let std::option::Option::Some(delay) = decision.delay() {
+                    let waited = wait_retry_delay(delay, deadline).await;
+                    if waited {
+                        completed_retries = completed_retries.saturating_add(1);
+                        continue;
+                    }
+                    return execution_timeout(method, "HTTP JSON-RPC rate-limit retry exceeded the common request deadline");
+                }
+                return rate_limited_error(method, provider_retry_after);
+            }
+            if is_temporary_http_status(status) {
+                permit.record_failure();
+                let decision = crate::evaluate_transport_retry(
+                    method,
+                    self.retry_settings(),
+                    crate::HttpRetryCause::TemporaryHttp,
+                    crate::HttpDispatchState::DispatchedAmbiguous,
+                    completed_retries,
+                    std::option::Option::None,
+                );
+                drop(permit);
+                if let std::option::Option::Some(delay) = decision.delay() {
+                    let waited = wait_retry_delay(delay, deadline).await;
+                    if waited {
+                        completed_retries = completed_retries.saturating_add(1);
+                        continue;
+                    }
+                    return execution_timeout(method, "HTTP JSON-RPC temporary-status retry exceeded the common request deadline");
+                }
+                return http_status_error(method, status);
+            }
+            if !(200..300).contains(&status) {
+                permit.record_success();
+                return http_status_error(method, status);
+            }
+            let response_text = match std::str::from_utf8(response.body()) {
+                std::result::Result::Ok(text) => text,
+                std::result::Result::Err(error) => {
+                    permit.record_failure();
+                    return std::result::Result::Err(
+                        ksp_core_lib::Error::new(crate::ERROR_CODE_INVALID_RESPONSE, "HTTP JSON-RPC response body is not valid UTF-8")
+                            .with_context("rpc_method", method.method())
+                            .with_source(error),
+                    );
+                },
+            };
+            let parsed_result = crate::parse_json_rpc_response_text(response_text, request_id);
+            let parsed = match parsed_result {
+                std::result::Result::Ok(parsed) => parsed,
+                std::result::Result::Err(error) => {
+                    permit.record_failure();
+                    return std::result::Result::Err(error);
+                },
+            };
+            permit.record_success();
+            ksp_logging_lib::debug!(
+                target: env!("CARGO_PKG_NAME"),
+                endpoint_name = permit.selection().endpoint_name(),
+                role = permit.selection().role().as_str(),
+                rpc_method = method.method(),
+                request_id,
+                completed_retries,
+                http_status = status,
+                "completed Solana HTTP JSON-RPC request"
+            );
+            return parsed.into_result();
+        }
+    }
+}
+
+fn retry_cause_for_error(error: &ksp_core_lib::Error) -> crate::HttpRetryCause {
+    if error.code() == crate::ERROR_CODE_HTTP_CONNECTION_FAILED {
+        return crate::HttpRetryCause::Connection;
+    }
+    if error.code() == crate::ERROR_CODE_TIMEOUT {
+        return crate::HttpRetryCause::Timeout;
+    }
+    return crate::HttpRetryCause::Request;
+}
+
+fn dispatch_state_for_error(error: &ksp_core_lib::Error) -> crate::HttpDispatchState {
+    if error.code() == crate::ERROR_CODE_HTTP_CONNECTION_FAILED {
+        return crate::HttpDispatchState::NotDispatched;
+    }
+    return crate::HttpDispatchState::DispatchedAmbiguous;
+}
+
+const fn is_temporary_http_status(status: u16) -> bool {
+    return status == HTTP_REQUEST_TIMEOUT
+        || status == HTTP_INTERNAL_SERVER_ERROR
+        || status == HTTP_BAD_GATEWAY
+        || status == HTTP_SERVICE_UNAVAILABLE
+        || status == HTTP_GATEWAY_TIMEOUT;
+}
+
+fn remaining_budget(deadline: std::time::Instant) -> std::time::Duration {
+    let now = std::time::Instant::now();
+    if now >= deadline {
+        return std::time::Duration::ZERO;
+    }
+    return deadline.duration_since(now);
+}
+
+async fn wait_retry_delay(delay: std::time::Duration, deadline: std::time::Instant) -> bool {
+    let remaining = remaining_budget(deadline);
+    if remaining.is_zero() || delay >= remaining {
+        return false;
+    }
+    tokio::time::sleep(delay).await;
+    return std::time::Instant::now() < deadline;
+}
+
+fn execution_timeout(method: &crate::HttpRpcMethodDescriptor, message: &str) -> ksp_core_lib::Result<serde_json::Value> {
+    return std::result::Result::Err(ksp_core_lib::Error::new(crate::ERROR_CODE_TIMEOUT, message).with_context("rpc_method", method.method()));
+}
+
+fn rate_limited_error(
+    method: &crate::HttpRpcMethodDescriptor,
+    provider_retry_after: std::option::Option<std::time::Duration>,
+) -> ksp_core_lib::Result<serde_json::Value> {
+    let mut error = ksp_core_lib::Error::new(crate::ERROR_CODE_RATE_LIMITED, "Solana HTTP endpoint rate-limited the JSON-RPC request")
+        .with_context("rpc_method", method.method());
+    if let std::option::Option::Some(delay) = provider_retry_after {
+        error = error.with_context("retry_after_seconds", delay.as_secs().to_string());
+    }
+    return std::result::Result::Err(error);
+}
+
+fn http_status_error(method: &crate::HttpRpcMethodDescriptor, status: u16) -> ksp_core_lib::Result<serde_json::Value> {
+    return std::result::Result::Err(
+        ksp_core_lib::Error::new(crate::ERROR_CODE_HTTP_REQUEST_FAILED, "Solana HTTP endpoint returned an unsuccessful status")
+            .with_context("rpc_method", method.method())
+            .with_context("http_status", status.to_string()),
+    );
+}
+
+#[cfg(test)]
+#[path = "../unit_tests/executor.rs"]
+mod tests;
--- a/crates/ksp-onchain-transport-lib/src/lib.rs
+++ b/crates/ksp-onchain-transport-lib/src/lib.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-onchain-transport-lib/src/lib.rs
-// version: 3
+// version: 4
 #![warn(missing_docs)]
 #![deny(unreachable_pub)]
 #![forbid(unsafe_code)]
@@ -8,14 +8,16 @@
 //!
 //! This crate owns runtime HTTP transport settings, Solana HTTP JSON-RPC envelopes and the audited standard method registry. It deliberately remains
 //! independent from `ksp-config-lib`, Store and Program layers. Config may later construct these public settings through a one-way adapter. Logical endpoint
-//! clients, priority-aware pools, bounded admission limits and retry/no-resend policy are available, while typed Solana method adapters remain staged by
-//! subsequent `0.2.1` prereleases.
+//! clients, priority-aware pools, bounded admission limits and retry/no-resend policy are available. The first typed Solana HTTP canaries execute real
+//! JSON-RPC requests while the remaining audited methods stay staged by subsequent `0.2.x` releases.

 mod client;
 mod error;
+mod executor;
 mod json_rpc;
 mod pool;
 mod resilience;
+mod rpc_canary;
 mod rpc_method;
 mod settings;

@@ -81,6 +83,20 @@ pub use self::resilience::HttpRetryCause;
 pub use self::resilience::HttpRetryDecision;
 /// Evaluates the centralized bounded HTTP retry policy for one audited RPC method.
 pub use self::resilience::evaluate_transport_retry;
+/// Optional typed configuration for the `getBalance` canary.
+pub use self::rpc_canary::GetBalanceConfig;
+/// Typed lamport balance returned by the `getBalance` canary.
+pub use self::rpc_canary::GetBalanceResult;
+/// Commitment level accepted by the initial typed Solana HTTP canary adapters.
+pub use self::rpc_canary::SolanaCommitment;
+/// Typed genesis hash returned by the `getGenesisHash` canary.
+pub use self::rpc_canary::SolanaGenesisHash;
+/// Typed healthy result returned by the `getHealth` canary.
+pub use self::rpc_canary::SolanaNodeHealth;
+/// Typed software-version response returned by the `getVersion` canary.
+pub use self::rpc_canary::SolanaNodeVersion;
+/// Typed Solana RPC context used by the initial account canary.
+pub use self::rpc_canary::SolanaRpcContext;
 /// Functional category used by the audited Solana HTTP JSON-RPC registry.
 pub use self::rpc_method::HttpRpcCategory;
 /// Release that owns typed KSP coverage for one audited HTTP RPC method.
--- a/crates/ksp-onchain-transport-lib/src/pool.rs
+++ b/crates/ksp-onchain-transport-lib/src/pool.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-onchain-transport-lib/src/pool.rs
-// version: 3
+// version: 4

 /// Safe snapshot of the logical HTTP endpoint pool.
 #[derive(Clone, Debug, Eq, PartialEq)]
@@ -169,6 +169,7 @@ struct HttpTransportPoolInner {
    clients: std::vec::Vec<crate::HttpEndpointClient>,
    retry: crate::HttpRetrySettings,
    notify: std::sync::Arc<tokio::sync::Notify>,
+    request_ids: std::sync::atomic::AtomicU64,
    cursors: std::sync::Mutex<std::collections::BTreeMap<(std::string::String, std::string::String, u32), usize>>,
 }

@@ -194,6 +195,7 @@ impl HttpTransportPool {
                clients,
                retry: settings.retry().clone(),
                notify,
+                request_ids: std::sync::atomic::AtomicU64::new(1),
                cursors: std::sync::Mutex::new(std::collections::BTreeMap::new()),
            }),
        };
@@ -213,6 +215,14 @@ impl HttpTransportPool {
        return &self.inner.retry;
    }

+    pub(crate) fn next_request_id(&self) -> u64 {
+        let id = self.inner.request_ids.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
+        if id == 0 {
+            return self.inner.request_ids.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
+        }
+        return id;
+    }
+
    /// Selects an endpoint for one standard audited RPC method without reserving runtime capacity.
    ///
    /// Request execution should use `acquire_for_method` so rate, cooldown and concurrency limits are enforced.
@@ -424,7 +434,11 @@ impl HttpTransportPool {
        return std::time::Instant::now() < deadline;
    }

-    fn common_request_timeout(&self, role: &crate::HttpRoleName, request_kind: &crate::HttpRequestKind) -> ksp_core_lib::Result<std::time::Duration> {
+    pub(crate) fn common_request_timeout(
+        &self,
+        role: &crate::HttpRoleName,
+        request_kind: &crate::HttpRequestKind,
+    ) -> ksp_core_lib::Result<std::time::Duration> {
        let mut timeout: std::option::Option<std::time::Duration> = std::option::Option::None;
        for client in &self.inner.clients {
            if client.matching_role(role, request_kind).is_none() {
--- a/crates/ksp-onchain-transport-lib/src/rpc_canary.rs
+++ b/crates/ksp-onchain-transport-lib/src/rpc_canary.rs
@@ -0,0 +1,301 @@
+// file: crates/ksp-onchain-transport-lib/src/rpc_canary.rs
+// version: 1
+
+/// Commitment level accepted by the initial typed Solana HTTP canary adapters.
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+pub enum SolanaCommitment {
+    /// Query the most recent processed bank.
+    Processed,
+    /// Query a bank confirmed by cluster vote.
+    Confirmed,
+    /// Query a finalized bank.
+    Finalized,
+}
+
+impl SolanaCommitment {
+    /// Returns the Solana JSON-RPC commitment string.
+    #[must_use]
+    pub const fn as_str(self) -> &'static str {
+        return match self {
+            Self::Processed => "processed",
+            Self::Confirmed => "confirmed",
+            Self::Finalized => "finalized",
+        };
+    }
+}
+
+/// Optional typed configuration for `getBalance`.
+#[derive(Clone, Debug, Default, Eq, PartialEq)]
+pub struct GetBalanceConfig {
+    commitment: std::option::Option<crate::SolanaCommitment>,
+    min_context_slot: std::option::Option<u64>,
+}
+
+impl GetBalanceConfig {
+    /// Creates an explicit `getBalance` configuration.
+    #[must_use]
+    pub const fn new(commitment: std::option::Option<crate::SolanaCommitment>, min_context_slot: std::option::Option<u64>) -> Self {
+        return Self { commitment, min_context_slot };
+    }
+
+    /// Returns the optional commitment level.
+    #[must_use]
+    pub const fn commitment(&self) -> std::option::Option<crate::SolanaCommitment> {
+        return self.commitment;
+    }
+
+    /// Returns the optional minimum context slot.
+    #[must_use]
+    pub const fn min_context_slot(&self) -> std::option::Option<u64> {
+        return self.min_context_slot;
+    }
+
+    fn is_empty(&self) -> bool {
+        return self.commitment.is_none() && self.min_context_slot.is_none();
+    }
+
+    fn to_json_value(&self) -> serde_json::Value {
+        let mut object = serde_json::Map::new();
+        if let std::option::Option::Some(commitment) = self.commitment {
+            object.insert("commitment".to_owned(), serde_json::Value::String(commitment.as_str().to_owned()));
+        }
+        if let std::option::Option::Some(min_context_slot) = self.min_context_slot {
+            object.insert("minContextSlot".to_owned(), serde_json::Value::Number(min_context_slot.into()));
+        }
+        return serde_json::Value::Object(object);
+    }
+}
+
+/// Typed healthy result returned by the `getHealth` canary.
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+pub enum SolanaNodeHealth {
+    /// The RPC node returned the stable `"ok"` health result.
+    Healthy,
+}
+
+/// Typed genesis hash returned by the `getGenesisHash` canary.
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
+pub struct SolanaGenesisHash {
+    value: std::string::String,
+}
+
+impl SolanaGenesisHash {
+    /// Returns the base58-encoded genesis hash text.
+    #[must_use]
+    pub fn as_str(&self) -> &str {
+        return self.value.as_str();
+    }
+}
+
+/// Typed software-version response returned by the `getVersion` canary.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SolanaNodeVersion {
+    solana_core: std::string::String,
+    feature_set: std::option::Option<u32>,
+}
+
+impl SolanaNodeVersion {
+    /// Returns the node software version string from the `solana-core` field.
+    #[must_use]
+    pub fn solana_core(&self) -> &str {
+        return self.solana_core.as_str();
+    }
+
+    /// Returns the optional runtime feature-set identifier.
+    #[must_use]
+    pub const fn feature_set(&self) -> std::option::Option<u32> {
+        return self.feature_set;
+    }
+}
+
+/// Typed Solana RPC context used by the initial account canary.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SolanaRpcContext {
+    slot: u64,
+    api_version: std::option::Option<std::string::String>,
+}
+
+impl SolanaRpcContext {
+    /// Returns the context slot reported by the RPC node.
+    #[must_use]
+    pub const fn slot(&self) -> u64 {
+        return self.slot;
+    }
+
+    /// Returns the optional RPC API version reported by the node.
+    #[must_use]
+    pub fn api_version(&self) -> std::option::Option<&str> {
+        return match self.api_version.as_ref() {
+            std::option::Option::Some(value) => std::option::Option::Some(value.as_str()),
+            std::option::Option::None => std::option::Option::None,
+        };
+    }
+}
+
+/// Typed lamport balance returned by the `getBalance` canary.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct GetBalanceResult {
+    context: crate::SolanaRpcContext,
+    value: u64,
+}
+
+impl GetBalanceResult {
+    /// Returns the Solana response context.
+    #[must_use]
+    pub const fn context(&self) -> &crate::SolanaRpcContext {
+        return &self.context;
+    }
+
+    /// Returns the account balance in lamports.
+    #[must_use]
+    pub const fn value(&self) -> u64 {
+        return self.value;
+    }
+}
+
+impl crate::HttpTransportPool {
+    /// Executes the typed `getHealth` foundation canary.
+    pub async fn get_health(&self, role: &crate::HttpRoleName) -> ksp_core_lib::Result<crate::SolanaNodeHealth> {
+        let method_result = canary_descriptor("getHealth");
+        let method = match method_result {
+            std::result::Result::Ok(method) => method,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let result = self.execute_standard_rpc(role, method, std::vec::Vec::new()).await;
+        let value = match result {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        if value.as_str() == std::option::Option::Some("ok") {
+            return std::result::Result::Ok(crate::SolanaNodeHealth::Healthy);
+        }
+        return invalid_canary_response("getHealth", "result must be exactly the string ok");
+    }
+
+    /// Executes the typed `getGenesisHash` foundation canary.
+    pub async fn get_genesis_hash(&self, role: &crate::HttpRoleName) -> ksp_core_lib::Result<crate::SolanaGenesisHash> {
+        let method_result = canary_descriptor("getGenesisHash");
+        let method = match method_result {
+            std::result::Result::Ok(method) => method,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let result = self.execute_standard_rpc(role, method, std::vec::Vec::new()).await;
+        let value = match result {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let hash = match value.as_str() {
+            std::option::Option::Some(hash) => hash,
+            std::option::Option::None => return invalid_canary_response("getGenesisHash", "result must be a string"),
+        };
+        if hash.is_empty() || hash.trim() != hash {
+            return invalid_canary_response("getGenesisHash", "result must be a non-empty trimmed string");
+        }
+        return std::result::Result::Ok(crate::SolanaGenesisHash { value: hash.to_owned() });
+    }
+
+    /// Executes the typed `getVersion` foundation canary.
+    pub async fn get_version(&self, role: &crate::HttpRoleName) -> ksp_core_lib::Result<crate::SolanaNodeVersion> {
+        let method_result = canary_descriptor("getVersion");
+        let method = match method_result {
+            std::result::Result::Ok(method) => method,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let result = self.execute_standard_rpc(role, method, std::vec::Vec::new()).await;
+        let value = match result {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let decode_result = serde_json::from_value::<WireNodeVersion>(value);
+        let decoded = match decode_result {
+            std::result::Result::Ok(decoded) => decoded,
+            std::result::Result::Err(error) => return invalid_canary_decode("getVersion", error),
+        };
+        if decoded.solana_core.is_empty() || decoded.solana_core.trim() != decoded.solana_core {
+            return invalid_canary_response("getVersion", "solana-core must be a non-empty trimmed string");
+        }
+        return std::result::Result::Ok(crate::SolanaNodeVersion { solana_core: decoded.solana_core, feature_set: decoded.feature_set });
+    }
+
+    /// Executes the typed `getBalance` foundation canary.
+    pub async fn get_balance(
+        &self,
+        role: &crate::HttpRoleName,
+        account: &ksp_core_lib::Pubkey,
+        config: std::option::Option<&crate::GetBalanceConfig>,
+    ) -> ksp_core_lib::Result<crate::GetBalanceResult> {
+        let method_result = canary_descriptor("getBalance");
+        let method = match method_result {
+            std::result::Result::Ok(method) => method,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let mut params = std::vec![serde_json::Value::String(account.to_string())];
+        if let std::option::Option::Some(config) = config
+            && !config.is_empty()
+        {
+            params.push(config.to_json_value());
+        }
+        let result = self.execute_standard_rpc(role, method, params).await;
+        let value = match result {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let decode_result = serde_json::from_value::<WireBalanceResult>(value);
+        let decoded = match decode_result {
+            std::result::Result::Ok(decoded) => decoded,
+            std::result::Result::Err(error) => return invalid_canary_decode("getBalance", error),
+        };
+        return std::result::Result::Ok(crate::GetBalanceResult {
+            context: crate::SolanaRpcContext { slot: decoded.context.slot, api_version: decoded.context.api_version },
+            value: decoded.value,
+        });
+    }
+}
+
+#[derive(serde::Deserialize)]
+struct WireNodeVersion {
+    #[serde(rename = "solana-core")]
+    solana_core: std::string::String,
+    #[serde(rename = "feature-set", default)]
+    feature_set: std::option::Option<u32>,
+}
+
+#[derive(serde::Deserialize)]
+struct WireRpcContext {
+    slot: u64,
+    #[serde(rename = "apiVersion", default)]
+    api_version: std::option::Option<std::string::String>,
+}
+
+#[derive(serde::Deserialize)]
+struct WireBalanceResult {
+    context: WireRpcContext,
+    value: u64,
+}
+
+fn canary_descriptor(method: &str) -> ksp_core_lib::Result<&'static crate::HttpRpcMethodDescriptor> {
+    let descriptor = crate::find_http_rpc_method(method);
+    return match descriptor {
+        std::option::Option::Some(descriptor) => std::result::Result::Ok(descriptor),
+        std::option::Option::None => std::result::Result::Err(
+            ksp_core_lib::Error::new(crate::ERROR_CODE_INVALID_RESPONSE, "typed canary descriptor is missing from the audited registry")
+                .with_context("rpc_method", method),
+        ),
+    };
+}
+
+fn invalid_canary_decode<T>(method: &str, error: serde_json::Error) -> ksp_core_lib::Result<T> {
+    return std::result::Result::Err(
+        ksp_core_lib::Error::new(crate::ERROR_CODE_INVALID_RESPONSE, "typed Solana HTTP canary response has an invalid shape")
+            .with_context("rpc_method", method)
+            .with_source(error),
+    );
+}
+
+fn invalid_canary_response<T>(method: &str, message: &str) -> ksp_core_lib::Result<T> {
+    return std::result::Result::Err(ksp_core_lib::Error::new(crate::ERROR_CODE_INVALID_RESPONSE, message).with_context("rpc_method", method));
+}
+
+#[cfg(test)]
+#[path = "../unit_tests/rpc_canary.rs"]
+mod tests;
--- a/crates/ksp-onchain-transport-lib/tests/public_api.rs
+++ b/crates/ksp-onchain-transport-lib/tests/public_api.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-onchain-transport-lib/tests/public_api.rs
-// version: 4
+// version: 5

 //! Integration tests for the public `ksp-onchain-transport-lib` consumer contract.

@@ -160,3 +160,14 @@ async fn public_async_admission_exposes_bounded_permit_without_endpoint_url() {
    assert!(!rendered.contains("ASYNC-SECRET-CANARY"));
    assert!(!rendered.contains("provider.invalid"));
 }
+
+#[test]
+fn public_typed_canary_contracts_are_available_from_crate_root() {
+    let config = ksp_onchain_transport_lib::GetBalanceConfig::new(
+        std::option::Option::Some(ksp_onchain_transport_lib::SolanaCommitment::Confirmed),
+        std::option::Option::Some(42),
+    );
+    assert_eq!(config.commitment(), std::option::Option::Some(ksp_onchain_transport_lib::SolanaCommitment::Confirmed));
+    assert_eq!(config.min_context_slot(), std::option::Option::Some(42));
+    assert_eq!(ksp_onchain_transport_lib::SolanaNodeHealth::Healthy, ksp_onchain_transport_lib::SolanaNodeHealth::Healthy);
+}
--- a/crates/ksp-onchain-transport-lib/unit_tests/executor.rs
+++ b/crates/ksp-onchain-transport-lib/unit_tests/executor.rs
@@ -0,0 +1,136 @@
+// file: crates/ksp-onchain-transport-lib/unit_tests/executor.rs
+// version: 1
+
+fn pool_for_url(url: &str, request_timeout: std::time::Duration, max_retries: u32) -> crate::HttpTransportPool {
+    let role = crate::HttpEndpointRoleSettings::new(
+        crate::HttpRoleName::new("default"),
+        true,
+        std::vec![crate::HttpRequestKind::wildcard()],
+        10,
+        crate::HttpRoleLimits::new(
+            std::option::Option::None,
+            std::option::Option::None,
+            std::option::Option::None,
+            std::option::Option::Some(std::time::Duration::from_millis(1)),
+        ),
+    );
+    let endpoint = crate::HttpEndpointSettings::new(
+        "fixture",
+        true,
+        crate::HttpProviderName::new("fixture"),
+        crate::HttpClusterName::new("local"),
+        crate::HttpEndpointUrl::parse(url).expect("fixture URL must parse"),
+        std::time::Duration::from_millis(100),
+        request_timeout,
+        std::option::Option::Some(1),
+        std::vec![role],
+    );
+    let settings = crate::HttpTransportSettings::new(
+        std::vec![endpoint],
+        crate::HttpRetrySettings::new(max_retries, std::time::Duration::from_millis(1), std::time::Duration::from_millis(2)),
+    );
+    return crate::HttpTransportPool::new(settings).expect("fixture pool must build");
+}
+
+fn health_method() -> &'static crate::HttpRpcMethodDescriptor {
+    return crate::find_http_rpc_method("getHealth").expect("getHealth descriptor must exist");
+}
+
+fn serve_rate_limit_then_success() -> (std::string::String, std::thread::JoinHandle<usize>) {
+    let listener = std::net::TcpListener::bind("127.0.0.1:0").expect("fixture listener must bind");
+    let address = listener.local_addr().expect("fixture listener address must resolve");
+    let handle = std::thread::spawn(move || {
+        let mut count = 0_usize;
+        while count < 2 {
+            let (mut stream, _) = listener.accept().expect("fixture server must accept request");
+            let _ = read_request(&mut stream);
+            let response = if count == 0 {
+                "HTTP/1.1 429 Too Many Requests\r\nRetry-After: 0\r\nContent-Length: 0\r\nConnection: close\r\n\r\n".to_owned()
+            } else {
+                let body = include_str!("../fixtures/http/get_health.success.json");
+                format!("HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nContent-Length: {}\r\nConnection: close\r\n\r\n{}", body.len(), body)
+            };
+            std::io::Write::write_all(&mut stream, response.as_bytes()).expect("fixture response must write");
+            count = count.saturating_add(1);
+        }
+        return count;
+    });
+    return (format!("http://{address}"), handle);
+}
+
+fn serve_timeout() -> (std::string::String, std::thread::JoinHandle<()>) {
+    let listener = std::net::TcpListener::bind("127.0.0.1:0").expect("fixture listener must bind");
+    let address = listener.local_addr().expect("fixture listener address must resolve");
+    let handle = std::thread::spawn(move || {
+        let (mut stream, _) = listener.accept().expect("fixture server must accept request");
+        let _ = read_request(&mut stream);
+        std::thread::sleep(std::time::Duration::from_millis(100));
+        return;
+    });
+    return (format!("http://{address}"), handle);
+}
+
+fn read_request(stream: &mut std::net::TcpStream) -> std::string::String {
+    let mut bytes = std::vec::Vec::new();
+    let mut buffer = [0_u8; 1024];
+    loop {
+        let count = std::io::Read::read(stream, &mut buffer).expect("fixture request must read");
+        if count == 0 {
+            break;
+        }
+        bytes.extend_from_slice(&buffer[..count]);
+        if request_complete(bytes.as_slice()) {
+            break;
+        }
+    }
+    return std::string::String::from_utf8(bytes).expect("fixture request must be UTF-8");
+}
+
+fn request_complete(bytes: &[u8]) -> bool {
+    let text = match std::str::from_utf8(bytes) {
+        std::result::Result::Ok(text) => text,
+        std::result::Result::Err(_) => return false,
+    };
+    let header_end = match text.find("\r\n\r\n") {
+        std::option::Option::Some(value) => value,
+        std::option::Option::None => return false,
+    };
+    let mut content_length = 0_usize;
+    for line in text[..header_end].lines() {
+        let (name, value) = match line.split_once(':') {
+            std::option::Option::Some(parts) => parts,
+            std::option::Option::None => continue,
+        };
+        if name.eq_ignore_ascii_case("content-length") {
+            content_length = value.trim().parse::<usize>().expect("content length must parse");
+        }
+    }
+    return bytes.len() >= header_end.saturating_add(4).saturating_add(content_length);
+}
+
+#[tokio::test(flavor = "current_thread")]
+async fn executor_applies_retry_after_and_retries_http_429_for_retry_safe_method() {
+    let (url, handle) = serve_rate_limit_then_success();
+    let pool = pool_for_url(url.as_str(), std::time::Duration::from_millis(500), 1);
+    let result = pool
+        .execute_standard_rpc(&crate::HttpRoleName::new("default"), health_method(), std::vec::Vec::new())
+        .await
+        .expect("retry-safe request must recover from one 429");
+    assert_eq!(result, serde_json::json!("ok"));
+    assert_eq!(handle.join().expect("fixture server must join"), 2);
+    let snapshot = pool.snapshot();
+    assert_eq!(snapshot.endpoints()[0].roles()[0].rate_limit_count(), 1);
+    assert_eq!(snapshot.endpoints()[0].roles()[0].success_count(), 1);
+}
+
+#[tokio::test(flavor = "current_thread")]
+async fn executor_maps_reqwest_timeout_to_ksp_timeout_error() {
+    let (url, handle) = serve_timeout();
+    let pool = pool_for_url(url.as_str(), std::time::Duration::from_millis(20), 0);
+    let error = pool
+        .execute_standard_rpc(&crate::HttpRoleName::new("default"), health_method(), std::vec::Vec::new())
+        .await
+        .expect_err("timed out request must fail");
+    assert_eq!(error.code(), crate::ERROR_CODE_TIMEOUT);
+    handle.join().expect("fixture server must join");
+}
--- a/crates/ksp-onchain-transport-lib/unit_tests/rpc_canary.rs
+++ b/crates/ksp-onchain-transport-lib/unit_tests/rpc_canary.rs
@@ -0,0 +1,137 @@
+// file: crates/ksp-onchain-transport-lib/unit_tests/rpc_canary.rs
+// version: 1
+
+fn pool_for_url(url: &str) -> crate::HttpTransportPool {
+    let role = crate::HttpEndpointRoleSettings::new(
+        crate::HttpRoleName::new("default"),
+        true,
+        std::vec![crate::HttpRequestKind::wildcard()],
+        10,
+        crate::HttpRoleLimits::new(std::option::Option::None, std::option::Option::None, std::option::Option::None, std::option::Option::None),
+    );
+    let endpoint = crate::HttpEndpointSettings::new(
+        "fixture",
+        true,
+        crate::HttpProviderName::new("fixture"),
+        crate::HttpClusterName::new("local"),
+        crate::HttpEndpointUrl::parse(url).expect("fixture URL must parse"),
+        std::time::Duration::from_secs(1),
+        std::time::Duration::from_secs(1),
+        std::option::Option::Some(1),
+        std::vec![role],
+    );
+    let settings = crate::HttpTransportSettings::new(
+        std::vec![endpoint],
+        crate::HttpRetrySettings::new(0, std::time::Duration::from_millis(1), std::time::Duration::from_millis(1)),
+    );
+    return crate::HttpTransportPool::new(settings).expect("fixture pool must build");
+}
+
+fn serve_once(body: &'static str) -> (std::string::String, std::thread::JoinHandle<std::string::String>) {
+    let listener = std::net::TcpListener::bind("127.0.0.1:0").expect("fixture listener must bind");
+    let address = listener.local_addr().expect("fixture listener address must resolve");
+    let handle = std::thread::spawn(move || {
+        let (mut stream, _) = listener.accept().expect("fixture server must accept one request");
+        let request = read_request(&mut stream);
+        let response = format!("HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nContent-Length: {}\r\nConnection: close\r\n\r\n{}", body.len(), body);
+        std::io::Write::write_all(&mut stream, response.as_bytes()).expect("fixture response must write");
+        return request;
+    });
+    return (format!("http://{address}"), handle);
+}
+
+fn read_request(stream: &mut std::net::TcpStream) -> std::string::String {
+    let mut bytes = std::vec::Vec::new();
+    let mut buffer = [0_u8; 1024];
+    loop {
+        let count = std::io::Read::read(stream, &mut buffer).expect("fixture request must read");
+        if count == 0 {
+            break;
+        }
+        bytes.extend_from_slice(&buffer[..count]);
+        if request_complete(bytes.as_slice()) {
+            break;
+        }
+    }
+    return std::string::String::from_utf8(bytes).expect("fixture request must be UTF-8");
+}
+
+fn request_complete(bytes: &[u8]) -> bool {
+    let text = match std::str::from_utf8(bytes) {
+        std::result::Result::Ok(text) => text,
+        std::result::Result::Err(_) => return false,
+    };
+    let header_end = match text.find("\r\n\r\n") {
+        std::option::Option::Some(value) => value,
+        std::option::Option::None => return false,
+    };
+    let mut content_length = 0_usize;
+    for line in text[..header_end].lines() {
+        let (name, value) = match line.split_once(':') {
+            std::option::Option::Some(parts) => parts,
+            std::option::Option::None => continue,
+        };
+        if name.eq_ignore_ascii_case("content-length") {
+            content_length = value.trim().parse::<usize>().expect("content length must parse");
+        }
+    }
+    return bytes.len() >= header_end.saturating_add(4).saturating_add(content_length);
+}
+
+fn request_body(request: &str) -> serde_json::Value {
+    let body = request.split("\r\n\r\n").nth(1).expect("fixture request body must exist");
+    return serde_json::from_str(body).expect("fixture request body must be JSON");
+}
+
+#[tokio::test(flavor = "current_thread")]
+async fn typed_get_health_executes_real_http_fixture() {
+    let (url, handle) = serve_once(include_str!("../fixtures/http/get_health.success.json"));
+    let pool = pool_for_url(url.as_str());
+    let result = pool.get_health(&crate::HttpRoleName::new("default")).await.expect("getHealth fixture must succeed");
+    assert_eq!(result, crate::SolanaNodeHealth::Healthy);
+    let request = handle.join().expect("fixture server must join");
+    let body = request_body(request.as_str());
+    assert_eq!(body["method"], serde_json::json!("getHealth"));
+}
+
+#[tokio::test(flavor = "current_thread")]
+async fn typed_get_genesis_hash_executes_real_http_fixture() {
+    let (url, handle) = serve_once(include_str!("../fixtures/http/get_genesis_hash.success.json"));
+    let pool = pool_for_url(url.as_str());
+    let result = pool.get_genesis_hash(&crate::HttpRoleName::new("default")).await.expect("getGenesisHash fixture must succeed");
+    assert_eq!(result.as_str(), "GH7ome3EiwEr7tu9JuTh2dpYWBJK3z69Xm1ZE3MEE6JC");
+    let request = handle.join().expect("fixture server must join");
+    assert_eq!(request_body(request.as_str())["method"], serde_json::json!("getGenesisHash"));
+}
+
+#[tokio::test(flavor = "current_thread")]
+async fn typed_get_version_executes_real_http_fixture() {
+    let (url, handle) = serve_once(include_str!("../fixtures/http/get_version.success.json"));
+    let pool = pool_for_url(url.as_str());
+    let result = pool.get_version(&crate::HttpRoleName::new("default")).await.expect("getVersion fixture must succeed");
+    assert_eq!(result.solana_core(), "3.1.8");
+    assert_eq!(result.feature_set(), std::option::Option::Some(2_891_131_721));
+    let request = handle.join().expect("fixture server must join");
+    assert_eq!(request_body(request.as_str())["method"], serde_json::json!("getVersion"));
+}
+
+#[tokio::test(flavor = "current_thread")]
+async fn typed_get_balance_executes_real_http_fixture_and_encodes_config() {
+    let (url, handle) = serve_once(include_str!("../fixtures/http/get_balance.success.json"));
+    let pool = pool_for_url(url.as_str());
+    let account = "11111111111111111111111111111111".parse::<ksp_core_lib::Pubkey>().expect("system address must parse");
+    let config = crate::GetBalanceConfig::new(std::option::Option::Some(crate::SolanaCommitment::Finalized), std::option::Option::Some(123));
+    let result = pool
+        .get_balance(&crate::HttpRoleName::new("default"), &account, std::option::Option::Some(&config))
+        .await
+        .expect("getBalance fixture must succeed");
+    assert_eq!(result.value(), 424_242);
+    assert_eq!(result.context().slot(), 123_456_789);
+    assert_eq!(result.context().api_version(), std::option::Option::Some("3.1.8"));
+    let request = handle.join().expect("fixture server must join");
+    let body = request_body(request.as_str());
+    assert_eq!(body["method"], serde_json::json!("getBalance"));
+    assert_eq!(body["params"][0], serde_json::json!("11111111111111111111111111111111"));
+    assert_eq!(body["params"][1]["commitment"], serde_json::json!("finalized"));
+    assert_eq!(body["params"][1]["minContextSlot"], serde_json::json!(123));
+}
--- a/deltas/0.2.1/pre.005.md
+++ b/deltas/0.2.1/pre.005.md
@@ -0,0 +1,282 @@
+<!-- file: deltas/0.2.1/pre.005.md -->
+<!-- version: 1 -->
+
+# Delta `v0.2.1-pre.005`
+
+## Base
+
+Base attendue :
+
+```text
+v0.2.1-pre.004-fix.002
+```
+
+Cette base a été validée localement par le user avec `cargo fmt --all`, `cargo check --workspace`, `cargo clippy --workspace --all-targets`, `cargo test -p ksp-onchain-transport-lib` et `cargo test --workspace`.
+
+Version Cargo cible :
+
+```text
+0.2.1-pre.5
+```
+
+## Objectif
+
+Matérialiser la première exécution réseau HTTP complète de `ksp-onchain-transport-lib` et les quatre méthodes typées canari assignées à `0.2.1` :
+
+```text
+getHealth
+getVersion
+getGenesisHash
+getBalance
+```
+
+La tranche doit également corriger l'ownership des canaries de dépendances générales : les contrôles portant sur le workspace entier ne restent pas dans la crate métier Transport et sont centralisés dans la surface de tests de `ksp-core-lib` tant qu'aucun outil d'audit dédié n'existe.
+
+## Vérification de la surface Solana
+
+La documentation Solana HTTP officielle a été revérifiée le 17 août 2026 pour les quatre canaris :
+
+- `getHealth` : aucun paramètre, résultat stable `"ok"` lorsque le node est sain ;
+- `getGenesisHash` : aucun paramètre, résultat string base58 ;
+- `getVersion` : aucun paramètre, objet contenant `solana-core` et `feature-set` optionnel/null ;
+- `getBalance` : pubkey base58 obligatoire, configuration optionnelle `commitment` / `minContextSlot`, réponse `{ context, value }` où `value` est le solde en lamports.
+
+## Exécuteur HTTP JSON-RPC
+
+Nouvelle surface publique :
+
+```text
+HttpTransportPool::execute_standard_rpc(...)
+```
+
+L'exécuteur :
+
+1. vérifie le descriptor RPC audité et son support runtime ;
+2. alloue un identifiant JSON-RPC numérique KSP ;
+3. construit et sérialise `JsonRpcRequest` sans exposer les params dans `Debug` ;
+4. dérive le request-kind depuis le registre ;
+5. fixe une deadline commune à partir du plus petit `request_timeout` des endpoints compatibles ;
+6. acquiert un `HttpRequestPermit`, donc respecte rôles/capabilities/priorité/fairness/RPS/burst/concurrence/cooldown ;
+7. exécute un POST `application/json` via le `reqwest::Client` privé de l'endpoint ;
+8. mappe connexion, timeout, HTTP status, JSON invalide, protocole JSON-RPC et RPC application error vers les codes KSP existants ;
+9. met à jour la santé passive du rôle ;
+10. applique le retry/backoff centralisé sans dépasser la deadline commune.
+
+Les retries libèrent le permit précédent puis réacquièrent explicitement capacité RPS/concurrence : ils ne contournent donc pas les limites runtime du pool.
+
+## HTTP status, `Retry-After` et retry
+
+Le raccordement réseau de la résilience est désormais effectif :
+
+- `429` -> `record_rate_limited`, cooldown de rôle et `HttpRetryCause::RateLimited` ;
+- `Retry-After` sous forme HTTP delta-seconds -> `Duration`, puis borne défensive déjà possédée par la résilience ;
+- `408`, `500`, `502`, `503`, `504` -> `HttpRetryCause::TemporaryHttp` ;
+- erreur de connexion reqwest -> `HttpRetryCause::Connection` + `NotDispatched` ;
+- timeout reqwest -> `HttpRetryCause::Timeout` + `DispatchedAmbiguous` ;
+- autres erreurs request -> non retryables automatiquement ;
+- RPC application error et réponse invalide restent hors retry transport.
+
+Le parsing d'une forme HTTP-date de `Retry-After` n'est pas introduit dans cette tranche : si le header n'est pas un delta-seconds valide, le cooldown local configuré/fallback reste utilisé.
+
+La règle `NeverAfterDispatch` reste centralisée dans `evaluate_transport_retry()` ; l'exécuteur générique ne la contourne pas et prépare donc correctement les futurs appels write/submission de `0.2.3`.
+
+## Quatre canaris typés
+
+### `getHealth`
+
+Nouvelle méthode :
+
+```text
+HttpTransportPool::get_health(...)
+```
+
+Résultat public :
+
+```text
+SolanaNodeHealth::Healthy
+```
+
+Toute autre forme qu'un résultat string exact `"ok"` est classée `invalid_response`.
+
+### `getGenesisHash`
+
+Nouvelle méthode :
+
+```text
+HttpTransportPool::get_genesis_hash(...)
+```
+
+Résultat public :
+
+```text
+SolanaGenesisHash
+```
+
+Le wrapper exige un string non vide et trimé et n'utilise pas abusivement `Pubkey` pour représenter sémantiquement un hash de genesis.
+
+### `getVersion`
+
+Nouvelle méthode :
+
+```text
+HttpTransportPool::get_version(...)
+```
+
+Résultat public :
+
+```text
+SolanaNodeVersion
+  solana_core: String
+  feature_set: Option<u32>
+```
+
+### `getBalance`
+
+Nouvelle méthode :
+
+```text
+HttpTransportPool::get_balance(...)
+```
+
+L'adresse est reçue sous forme `ksp_core_lib::Pubkey`, conformément à l'ownership Core du type Solana bas niveau.
+
+Nouveaux contrats :
+
+```text
+SolanaCommitment
+GetBalanceConfig
+SolanaRpcContext
+GetBalanceResult
+```
+
+`GetBalanceConfig` encode uniquement les champs présents ; un config vide n'ajoute pas un second paramètre inutile.
+
+## Fixtures déterministes
+
+Nouvelles fixtures :
+
+```text
+crates/ksp-onchain-transport-lib/fixtures/http/get_health.success.json
+crates/ksp-onchain-transport-lib/fixtures/http/get_genesis_hash.success.json
+crates/ksp-onchain-transport-lib/fixtures/http/get_version.success.json
+crates/ksp-onchain-transport-lib/fixtures/http/get_balance.success.json
+```
+
+Les tests utilisent un serveur TCP local déterministe pour exercer réellement le POST HTTP sans dépendre de Devnet ou d'Internet.
+
+Ils vérifient notamment :
+
+- les quatre réponses typées ;
+- le nom de méthode envoyé ;
+- les params `getBalance`, dont `commitment` et `minContextSlot` ;
+- un cycle `429 + Retry-After: 0 -> retry -> succès` ;
+- le mapping d'un timeout reqwest vers `ERROR_CODE_TIMEOUT`.
+
+Le smoke réseau réel reste opt-in et appartient toujours à `pre.007`.
+
+## Centralisation des canaries de dépendances
+
+Le fichier suivant est supprimé :
+
+```text
+crates/ksp-onchain-transport-lib/tests/dependency_boundary.rs
+```
+
+Les deux contrôles qu'il contenait sont transférés vers :
+
+```text
+crates/ksp-core-lib/tests/workspace_dependencies.rs
+```
+
+Ils continuent de vérifier :
+
+- absence d'activation `features = [...]` sous `[workspace.dependencies]` ;
+- maintien de `default-features` au root ;
+- firewall direct Transport -> pas de Config/Store/Program/`tracing` ;
+- feature-set direct attendu de `reqwest` et `tokio` dans le manifest Transport.
+
+Nouvelle règle `DEP-CARGO-007` : les canaries qui inspectent une politique générale du workspace ou plusieurs manifests appartiennent à une surface de gouvernance/fondation, actuellement `ksp-core-lib`, et non à une crate métier spécialisée.
+
+## ROADMAP et plan
+
+`ROADMAP.md` reçoit uniquement la mise à jour synthétique normale de la release : exécution HTTP et quatre canaris deviennent acquis ; Config standard et clôture restent à venir.
+
+Le plan `008` marque `pre.005` réalisé et ajoute son état détaillé. L'historique technique reste dans `deltas/`.
+
+## Tests
+
+Après déplacement des deux canaries workspace hors de Transport et ajout des nouveaux tests :
+
+```text
+ksp-onchain-transport-lib : 78 tests Rust déclarés
+ksp-core-lib              : +2 tests d'intégration workspace_dependencies
+```
+
+La suite Transport reste propriétaire uniquement des tests fonctionnels/API de son domaine ; les canaries workspace générales sont exécutées via Core lors du `cargo test --workspace`.
+
+## Dépendances
+
+Aucune nouvelle dépendance externe et aucune nouvelle feature externe ne sont introduites.
+
+La politique de `pre.004-fix.001/.002` reste inchangée : versions/default-features au root, features d'usage dans chaque crate consommatrice.
+
+## Fichiers ajoutés
+
+```text
+crates/ksp-core-lib/tests/workspace_dependencies.rs
+crates/ksp-onchain-transport-lib/fixtures/http/get_balance.success.json
+crates/ksp-onchain-transport-lib/fixtures/http/get_genesis_hash.success.json
+crates/ksp-onchain-transport-lib/fixtures/http/get_health.success.json
+crates/ksp-onchain-transport-lib/fixtures/http/get_version.success.json
+crates/ksp-onchain-transport-lib/src/executor.rs
+crates/ksp-onchain-transport-lib/src/rpc_canary.rs
+crates/ksp-onchain-transport-lib/unit_tests/executor.rs
+crates/ksp-onchain-transport-lib/unit_tests/rpc_canary.rs
+deltas/0.2.1/pre.005.md
+```
+
+## Fichiers modifiés
+
+```text
+Cargo.toml
+ROADMAP.md
+crates/ksp-onchain-transport-lib/src/client.rs
+crates/ksp-onchain-transport-lib/src/lib.rs
+crates/ksp-onchain-transport-lib/src/pool.rs
+crates/ksp-onchain-transport-lib/tests/public_api.rs
+docs/plans/008-V0_2_1_ONCHAIN_HTTP_PLAN.md
+docs/rules/RULES_DEPENDENCIES.md
+```
+
+## Fichiers supprimés
+
+```text
+crates/ksp-onchain-transport-lib/tests/dependency_boundary.rs
+```
+
+## Validation
+
+Non exécutée dans le sandbox de génération : `cargo` et `rustc` n'y sont pas installés.
+
+Après application :
+
+```bash
+cargo fmt --all
+cargo check --workspace
+cargo clippy --workspace --all-targets
+cargo test -p ksp-onchain-transport-lib
+cargo test -p ksp-core-lib
+cargo test --workspace
+```
+
+Aucune dépendance/feature n'ayant changé, un `cargo tree` complet n'est pas requis pour cette tranche. Il peut néanmoins être rejoué au checkpoint final `pre.007` comme prévu.
+
+## Suite
+
+Tranche suivante prévue :
+
+```text
+0.2.1-pre.006
+```
+
+Périmètre : document/schema/exemple Config standard `std.transport`, enregistrement dans Config, adapter Config -> Transport et tests de sensibilité/provenance/env sans créer de dépendance inverse Transport -> Config.
--- a/docs/plans/008-V0_2_1_ONCHAIN_HTTP_PLAN.md
+++ b/docs/plans/008-V0_2_1_ONCHAIN_HTTP_PLAN.md
@@ -1,5 +1,5 @@
 <!-- file: docs/plans/008-V0_2_1_ONCHAIN_HTTP_PLAN.md -->
-<!-- version: 5 -->
+<!-- version: 6 -->

 # `0.2.1-pre.001` — plan `ksp-onchain-transport-lib` HTTP Solana foundation

@@ -868,12 +868,12 @@ La release peut devenir stable seulement si :
 ## 22. Prévision souple des prereleases de la `0.2.1` réduite

 | Tranche   | Objectif                                                                                                                                                                     |
-|-----------|----------------------------------------------------------------------------------------------------------------------|
+|-----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `pre.001` | audit KSP + bot3 + docs officielles, matrice 52+14, architecture, split et sizing                                                                                            |
 | `pre.002` | **réalisé** : crate/workspace, codes erreur, settings/validation, JSON-RPC, descriptors/status, base Logging                                                                 |
 | `pre.003` | **réalisé** : endpoint client + pool logique + rôles/capabilities + priorité/fairness/fallback + snapshots sûrs                                                              |
 | `pre.004` | **réalisé** : RPS/burst/concurrence/cooldown + deadline commune + retry/backoff + classification retry/no-resend                                                             |
-| `pre.005` | méthodes canari `getHealth`, `getVersion`, `getGenesisHash`, `getBalance` + fixtures déterministes                   |
+| `pre.005` | **réalisé** : exécution HTTP JSON-RPC + `getHealth`, `getVersion`, `getGenesisHash`, `getBalance` + fixtures déterministes + centralisation des canaries workspace dans Core |
 | `pre.006` | `std.transport` schema/document/example + registry Config + adapter Config -> Transport + sensibilité/env tests                                                              |
 | `pre.007` | completeness/canaries, smoke opt-in, `cargo tree`, README/USAGE, docs finales, prompt `0.2.2`, préparation `rel.001`                                                         |

@@ -927,13 +927,28 @@ Restent volontairement à `pre.004` : token bucket RPS/burst, semaphore de concu
 - snapshots sûrs enrichis avec availability de rôle, limites, requêtes en vol, cooldown restant et compteurs success/failure/rate-limit, sans URL ni secret ;
 - transitions passives `Available -> Degraded/RateLimited` sur observations runtime et retour `Degraded -> Available` après succès ;
 - policy centralisée `evaluate_transport_retry()` : backoff exponentiel borné, budget `max_retries`, causes transport explicitement retryables, RPC application errors hors retry, et respect strict de `TransportRetryClass::NeverAfterDispatch` pour empêcher un resend automatique après dispatch ambigu ;
- `tokio` est consommé directement par Transport uniquement via la dépendance workspace avec feature locale `sync`; `time`/runtime restent fournis par le feature-set workspace existant ;
+- après `pre.004-fix.001/.002`, les features d’usage sont activées localement par crate : Transport porte `reqwest/rustls`, `serde/derive`, `tokio/macros+sync+time` et `tokio/rt` seulement en dev ; le root conserve version/default-features sans activation de features d’usage ;
 - la suite Transport compte désormais **72 tests déclarés**, avec preuves supplémentaires sur limiter, concurrence, cooldown, deadline, fallback runtime, santé passive, policy de retry et consommation publique de l'admission async.

 La tranche ne parse pas encore elle-même le header HTTP `Retry-After` et n'exécute pas de POST JSON-RPC : ces signaux seront raccordés à l'exécuteur HTTP avec les méthodes canari de `pre.005`.

 Restent à `pre.005` : exécution HTTP JSON-RPC réelle et wrappers typés `getHealth`, `getVersion`, `getGenesisHash`, `getBalance`, avec fixtures déterministes et raccordement des erreurs HTTP/429/timeout à la résilience maintenant disponible.

+### 22.4 État après `0.2.1-pre.005`
+
+`pre.005` matérialise la première exécution réseau HTTP complète et les quatre canaris typés de la release :
+
+- `workspace.package.version = 0.2.1-pre.5` ;
+- exécuteur générique `execute_standard_rpc` : allocation d'id JSON-RPC KSP, admission via pool, POST `application/json`, deadline commune, mapping connexion/timeout/status HTTP, parsing JSON-RPC et mise à jour de santé passive ;
+- HTTP `429` raccordé au cooldown de rôle et à la policy de retry avec parsing défensif de `Retry-After` sous forme delta-seconds ; statuts temporaires `408/500/502/503/504` raccordés au retry borné ;
+- les retries réacquièrent capacité RPS/concurrence et restent bornés par la même deadline ; la classification `NeverAfterDispatch` reste centralisée pour empêcher les futurs write/submission de se resoumettre après ambiguïté ;
+- wrappers typés `getHealth`, `getGenesisHash`, `getVersion`, `getBalance`, avec `ksp_core_lib::Pubkey`, commitment/minContextSlot optionnels, DTO de contexte/balance/version et validation de forme ;
+- fixtures JSON déterministes et serveur HTTP local de tests : les canaris prouvent le POST réel et les formes request/response ; tests supplémentaires sur récupération après 429 et timeout reqwest ;
+- les deux canaries de dépendances générales quittent `ksp-onchain-transport-lib/tests/dependency_boundary.rs` et sont centralisées sous `ksp-core-lib/tests/workspace_dependencies.rs`, conformément à `DEP-CARGO-007` ;
+- Transport compte désormais **78 tests déclarés** ; Core porte 2 canaries workspace supplémentaires dans sa surface d'intégration.
+
+Restent à `pre.006` : document/schema/exemple `std.transport`, enregistrement Config, adapter Config -> Transport et tests de sensibilité/provenance/env.
+
 ## 23. Séquence `0.2.x` recalibrée

 ```text
--- a/docs/rules/RULES_DEPENDENCIES.md
+++ b/docs/rules/RULES_DEPENDENCIES.md
@@ -1,5 +1,5 @@
 <!-- file: docs/rules/RULES_DEPENDENCIES.md -->
-<!-- version: 12 -->
+<!-- version: 13 -->

 # Règles des dépendances KSP

@@ -31,6 +31,7 @@ Elles complètent les règles Rust générales et le graphe de `docs/architectur
 - **DEP-CARGO-004** — Lorsqu'une génération majeure/mineure compatible est retenue, KSP exprime explicitement l'intention sous forme caret `^M.m` (par exemple `^4.3`) plutôt qu'avec une écriture patch telle que `4.3.0`. Même si Cargo interprète aussi par défaut cette dernière comme une contrainte compatible caret, KSP normalise la syntaxe pour rendre l'intention manifeste. Un pin exact `=M.m.p` ou un bornage différent requiert une justification explicite.
 - **DEP-CARGO-005** — Le `Cargo.lock` résout la version patch concrète à l'intérieur de la contrainte du workspace ; cette résolution ne remplace pas la politique de version déclarée dans le manifeste racine.
 - **DEP-CARGO-006** — Lorsqu'une feature externe n'est nécessaire qu'aux tests/benchmarks/examples d'une crate, son activation appartient à la section de dépendances de développement correspondante plutôt qu'aux dépendances de production. L'unification des features effectuée par Cargo lors d'un build ne transfère pas cet ownership vers le `Cargo.toml` racine.
+- **DEP-CARGO-007** — Les canaries qui inspectent une politique générale du workspace ou plusieurs manifests membres appartiennent à une surface de gouvernance/fondation (actuellement les tests de `ksp-core-lib` tant qu'aucun outil d'audit dédié n'existe). Une crate métier spécialisée conserve uniquement les tests de frontière propres à son domaine et ne devient pas propriétaire d'une règle globale du workspace.

 ## Codecs wire et cohérence des versions
				`@@ -0,0 +1 @@`
				`{"jsonrpc":"2.0","result":{"context":{"apiVersion":"3.1.8","slot":123456789},"value":424242},"id":1}`
				`@@ -0,0 +1 @@`
				`{"jsonrpc":"2.0","result":"GH7ome3EiwEr7tu9JuTh2dpYWBJK3z69Xm1ZE3MEE6JC","id":1}`
				`@@ -0,0 +1 @@`
				`{"jsonrpc":"2.0","result":{"solana-core":"3.1.8","feature-set":2891131721},"id":1}`