fix: read rpc config when using fork cheatcodes

crates/cheatcodes/src/config.rs

@@ -5,7 +5,7 @@ use foundry_common::{fs::normalize_path, ContractsByArtifact};
 use foundry_compilers::{utils::canonicalize, ProjectPathsConfig};
 use foundry_config::{
     cache::StorageCachingConfig, fs_permissions::FsAccessKind, Config, FsPermissions,
-    ResolvedRpcEndpoints,
+    ResolvedRpcEndpoint, ResolvedRpcEndpoints, RpcEndpoint, RpcEndpointUrl,
 };
 use foundry_evm_core::opts::EvmOpts;
 use semver::Version;
@@ -185,33 +185,29 @@ impl CheatsConfig {
     ///  - Returns an error if `url_or_alias` is a known alias but references an unresolved env var.
     ///  - Returns an error if `url_or_alias` is not an alias but does not start with a `http` or
     ///    `ws` `scheme` and is not a path to an existing file
-    pub fn rpc_url(&self, url_or_alias: &str) -> Result<String> {
-        match self.rpc_endpoints.get(url_or_alias) {
-            Some(Ok(url)) => Ok(url.clone()),
-            Some(Err(err)) => {
-                // try resolve again, by checking if env vars are now set
-                err.try_resolve().map_err(Into::into)
-            }
-            None => {
-                // check if it's a URL or a path to an existing file to an ipc socket
-                if url_or_alias.starts_with("http") ||
-                    url_or_alias.starts_with("ws") ||
-                    // check for existing ipc file
-                    Path::new(url_or_alias).exists()
-                {
-                    Ok(url_or_alias.into())
-                } else {
-                    Err(fmt_err!("invalid rpc url: {url_or_alias}"))
-                }
+    pub fn rpc_endpoint(&self, url_or_alias: &str) -> Result<ResolvedRpcEndpoint> {
+        if let Some(endpoint) = self.rpc_endpoints.get(url_or_alias) {
+            // try resolve again, by checking if env vars are now set
+            Ok(endpoint.clone().try_resolve())
+        } else {
+            // check if it's a URL or a path to an existing file to an ipc socket
+            if url_or_alias.starts_with("http") ||
+                url_or_alias.starts_with("ws") ||
+                // check for existing ipc file
+                Path::new(url_or_alias).exists()
+            {
+                let url = RpcEndpointUrl::Env(url_or_alias.to_string());
+                Ok(RpcEndpoint::new(url).resolve())
+            } else {
+                Err(fmt_err!("invalid rpc url: {url_or_alias}"))
             }
         }
     }
-
     /// Returns all the RPC urls and their alias.
     pub fn rpc_urls(&self) -> Result<Vec<Rpc>> {
         let mut urls = Vec::with_capacity(self.rpc_endpoints.len());
         for alias in self.rpc_endpoints.keys() {
-            let url = self.rpc_url(alias)?;
+            let url = self.rpc_endpoint(alias)?.url()?;
             urls.push(Rpc { key: alias.clone(), url });
         }
         Ok(urls)

crates/cheatcodes/src/evm/fork.rs

@@ -226,7 +226,7 @@ impl Cheatcode for rpc_0Call {
 impl Cheatcode for rpc_1Call {
     fn apply(&self, state: &mut Cheatcodes) -> Result {
         let Self { urlOrAlias, method, params } = self;
-        let url = state.config.rpc_url(urlOrAlias)?;
+        let url = state.config.rpc_endpoint(urlOrAlias)?.url()?;
         rpc_call(&url, method, params)
     }
 }
@@ -326,9 +326,15 @@ fn create_fork_request(
 ) -> Result<CreateFork> {
     persist_caller(ccx);
 
-    let url = ccx.state.config.rpc_url(url_or_alias)?;
+    let rpc_endpoint = ccx.state.config.rpc_endpoint(url_or_alias)?;
+    let url = rpc_endpoint.url()?;
     let mut evm_opts = ccx.state.config.evm_opts.clone();
     evm_opts.fork_block_number = block;
+    evm_opts.fork_retries = rpc_endpoint.config.retries;
+    evm_opts.fork_retry_backoff = rpc_endpoint.config.retry_backoff;
+    if let Some(Ok(auth)) = rpc_endpoint.auth {
+        evm_opts.fork_headers = Some(vec![format!("Authorization: {auth}")]);
+    }
     let fork = CreateFork {
         enable_caching: !ccx.state.config.no_storage_caching &&
             ccx.state.config.rpc_storage_caching.enable_for_endpoint(&url),

crates/cheatcodes/src/test.rs

@@ -42,7 +42,8 @@ impl Cheatcode for getFoundryVersionCall {
 impl Cheatcode for rpcUrlCall {
     fn apply(&self, state: &mut Cheatcodes) -> Result {
         let Self { rpcAlias } = self;
-        state.config.rpc_url(rpcAlias).map(|url| url.abi_encode())
+        let url = state.config.rpc_endpoint(rpcAlias)?.url()?.abi_encode();
+        Ok(url)
     }
 }
 

crates/chisel/src/dispatcher.rs

@@ -13,7 +13,7 @@ use crate::{
 use alloy_json_abi::{InternalType, JsonAbi};
 use alloy_primitives::{hex, Address};
 use forge_fmt::FormatterConfig;
-use foundry_config::{Config, RpcEndpoint};
+use foundry_config::{Config, RpcEndpointUrl};
 use foundry_evm::{
     decode::decode_console_logs,
     traces::{
@@ -357,9 +357,9 @@ impl ChiselDispatcher {
                 {
                     endpoint.clone()
                 } else {
-                    RpcEndpoint::Env(arg.to_string()).into()
+                    RpcEndpointUrl::Env(arg.to_string()).into()
                 };
-                let fork_url = match endpoint.resolve() {
+                let fork_url = match endpoint.resolve().url() {
                     Ok(fork_url) => fork_url,
                     Err(e) => {
                         return DispatchResult::CommandFailed(Self::make_error(format!(

crates/common/src/provider/mod.rs

@@ -241,6 +241,12 @@ impl ProviderBuilder {
         self
     }
 
+    /// Sets http headers. If `None`, defaults to the already-set value.
+    pub fn maybe_headers(mut self, headers: Option<Vec<String>>) -> Self {
+        self.headers = headers.unwrap_or(self.headers);
+        self
+    }
+
     /// Constructs the `RetryProvider` taking all configs into account.
     pub fn build(self) -> Result<RetryProvider> {
         let Self {