Added rpc-http-max-request-content-length (#1363)

* Added rpc-http-max-request-content-length

Signed-off-by: Anmol Sirola <95535448+AnmolSirola@users.noreply.github.com>

* Apply suggestions from code review

Signed-off-by: Alexandra Tran Carrillo <12214231+alexandratran@users.noreply.github.com>

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

Signed-off-by: Alexandra Tran Carrillo <12214231+alexandratran@users.noreply.github.com>

---------

Signed-off-by: Anmol Sirola <95535448+AnmolSirola@users.noreply.github.com>
Signed-off-by: Alexandra Tran Carrillo <12214231+alexandratran@users.noreply.github.com>
Co-authored-by: Alexandra Tran Carrillo <12214231+alexandratran@users.noreply.github.com>

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

@@ -2756,6 +2756,40 @@ rpc-http-max-active-connections=100
 
 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-request-content-length`
+
+<!--tabs-->
+
+# Syntax
+
+```bash
+--rpc-http-max-request-content-length=<LONG>
+```
+
+# Example
+
+```bash
+--rpc-http-max-request-content-length=2097152
+```
+
+# Environment variable
+
+```bash
+BESU_RPC_HTTP_MAX_REQUEST_CONTENT_LENGTH=2097152
+```
+
+# Configuration file
+
+```toml
+rpc-http-max-request-content-length=2097152
+```
+
+<!--/tabs-->
+
+The maximum request content length.
+Besu only accepts JSON-RPC API requests with a body size less than or equal to this value.
+The default is 5242880 (5 MB).
+
 ### `rpc-http-max-batch-size`
 
 <!--tabs-->