chore: add sidecar url override

bolt-cli/src/cli.rs

@@ -74,6 +74,13 @@ pub struct SendCommand {
     /// The private key to sign the transaction with.
     #[clap(long, env = "PRIVATE_KEY", hide_env_values = true)]
     pub private_key: String,
+
+    /// The Bolt Sidecar URL to send requests to. If provided, this will override
+    /// the canonical bolt RPC URL and disregard any registration information.
+    ///
+    /// This is useful for testing and development purposes.
+    #[clap(long, env = "OVERRIDE_BOLT_SIDECAR_URL")]
+    pub override_bolt_sidecar_url: Option<Url>,
 }
 
 /// The action to perform.

bolt-cli/src/commands/send.rs

@@ -54,11 +54,20 @@ impl SendCommand {
         };
         let tx_hash = B256::from(keccak256(&raw_tx));
 
+        // Note: it's possible for users to override the target sidecar URL
+        // for testing and development purposes. In most cases, the sidecar will
+        // reject a request for a slot that it is not responsible for.
+        let target_url = if let Some(sidecar_url) = self.override_bolt_sidecar_url {
+            sidecar_url.clone()
+        } else {
+            self.bolt_rpc_url.clone()
+        };
+
         send_rpc_request(
             vec![hex::encode(&raw_tx)],
             vec![tx_hash],
             next_preconfirmer_slot,
-            self.bolt_rpc_url,
+            target_url,
             &wallet,
         )
         .await?;

bolt-cli/src/common/bolt_manager.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)] // TODO: rm this
+
 use std::str::FromStr;
 
 use alloy::{