Implement XdrCodec for TransactionMeta

.gitattributes

@@ -1,2 +1,6 @@
 # Auto detect text files and perform LF normalization
 * text=auto
+# Force LF endings for Rust code and common text files
+*.rs text eol=lf
+*.toml text eol=lf
+*.md text eol=lf

Cargo.toml

@@ -15,7 +15,7 @@ description = "Soroban Transaction Debugger — From cryptic error to root cause
 
 [workspace.dependencies]
 # Stellar / Soroban — Critical Path
-stellar-xdr = { version = "=21.2.0", features = ["std", "serde"] }
+stellar-xdr = { version = "=21.2.0", features = ["std", "serde", "base64"] }
 stellar-strkey = "0.0.9"
 soroban-env-host = "=21.2.0"
 soroban-spec = "=21.2.0"

crates/core/src/network/config.rs

@@ -27,18 +27,16 @@ pub fn default_network() -> NetworkConfig {
 }
 
 /// Validate that a network configuration is reachable.
+///
+/// Uses the timeout from [`NetworkConfig::request_timeout_secs`] so a
+/// misconfigured or unreachable endpoint does not block the caller
+/// indefinitely.
 pub async fn validate_network(config: &NetworkConfig) -> bool {
-    let client = reqwest::Client::new();
-    client
-        .post(&config.rpc_url)
-        .json(&serde_json::json!({
-            "jsonrpc": "2.0",
-            "id": 1,
-            "method": "getHealth",
-            "params": {}
-        }))
-        .send()
+    let timeout = Duration::from_secs(config.request_timeout_secs);
+    let transport = JsonRpcTransport::new(&config.rpc_url, 0, timeout);
+    let req = JsonRpcRequest::new(1, "getHealth", GetHealthParams {});
+    transport
+        .call::<_, serde_json::Value>(&req)
         .await
-        .map(|r| r.status().is_success())
-        .unwrap_or(false)
+        .is_ok()
 }