fix: net_version returns string

CHANGELOG.md

@@ -174,6 +174,8 @@
 
 ### Unreleased
 
+- Return String for net version
+  [1376](https://github.com/gakonst/ethers-rs/pull/1376)
 - Stream of paginated logs that load logs in small pages
   [1285](https://github.com/gakonst/ethers-rs/pull/1285)
 - Load previous logs before subscribing to new logs in case fromBlock is set

ethers-providers/src/lib.rs

@@ -340,7 +340,7 @@ pub trait Middleware: Sync + Send + Debug {
         self.inner().get_chainid().await.map_err(FromErr::from)
     }
 
-    async fn get_net_version(&self) -> Result<U64, Self::Error> {
+    async fn get_net_version(&self) -> Result<String, Self::Error> {
         self.inner().get_net_version().await.map_err(FromErr::from)
     }
 

ethers-providers/src/provider.rs

@@ -583,7 +583,7 @@ impl<P: JsonRpcClient> Middleware for Provider<P> {
     }
 
     /// Returns the network version.
-    async fn get_net_version(&self) -> Result<U64, ProviderError> {
+    async fn get_net_version(&self) -> Result<String, ProviderError> {
         self.request("net_version", ()).await
     }