Add RPC batch size CLI option (#1277)

* Add RPC batch size CLI option.

Signed-off-by: bgravenorst <byron.gravenorst@consensys.net>

* Minor typo.

Signed-off-by: bgravenorst <byron.gravenorst@consensys.net>

* Minor typo.

Signed-off-by: bgravenorst <byron.gravenorst@consensys.net>

---------

Signed-off-by: bgravenorst <byron.gravenorst@consensys.net>

docs/public-networks/how-to/use-besu-api/json-rpc.md

@@ -96,8 +96,10 @@ To make RPC requests over HTTP, you can use [`curl`](https://curl.haxx.se/downlo
         }
         ```
 
-You can use `curl` to make multiple RPC requests over HTTP at the same time.
-Send the requests as an array, and receive an array of responses.
+You can use `curl` to make multiple RPC requests (batch requests) over HTTP at the same time.
+Send the requests as an array, and receive an array of responses. The default number of allowed requests
+in a RPC batch request is `1024`. Use the [`--rpc-http-max-batch-size`](../../reference/cli/options.md#rpc-http-max-batch-size)
+command line option to update the default value.
 
 !!! example
 

docs/public-networks/reference/cli/options.md

@@ -2491,6 +2491,35 @@ To allow remote connections, set to `0.0.0.0`.
 
 The maximum number of allowed HTTP JSON-RPC connections. Once this limit is reached, incoming connections are rejected. The default is 80.
 
+### `rpc-http-max-batch-size`
+
+=== "Syntax"
+
+    ```bash
+    --rpc-http-max-batch-size=<INTEGER>
+    ```
+
+=== "Example"
+
+    ```bash
+    --rpc-http-max-batch-size=1200
+    ```
+
+=== "Environment variable"
+
+    ```bash
+    BESU_RPC_HTTP_MAX_BATCH_SIZE=1200
+    ```
+
+=== "Configuration file"
+
+    ```toml
+    rpc-http-max-batch-size=1200
+    ```
+
+The maximum number of allowed requests in a [RPC batch request](../../how-to/use-besu-api/json-rpc.md#http).
+The default limit is `1024`, and `-1` specifies no limit.
+
 ### `rpc-http-port`
 
 === "Syntax"