feat(l1): add CLI flag to specify P2P listening address

cmd/ethrex/cli.rs

@@ -204,11 +204,19 @@ pub struct Options {
     pub authrpc_jwtsecret: String,
     #[arg(long = "p2p.disabled", default_value = "false", value_name = "P2P_DISABLED", action = ArgAction::SetFalse, help_heading = "P2P options")]
     pub p2p_disabled: bool,
+    #[arg(
+        long = "p2p.addr",
+        default_value = None,
+        value_name = "ADDRESS",
+        help = "Listening address for the P2P protocol.",
+        help_heading = "P2P options"
+    )]
+    pub p2p_addr: Option<String>,
     #[arg(
         long = "p2p.port",
         default_value = "30303",
         value_name = "PORT",
-        help = "TCP port for P2P protocol.",
+        help = "TCP port for the P2P protocol.",
         help_heading = "P2P options"
     )]
     pub p2p_port: String,
@@ -308,6 +316,7 @@ impl Default for Options {
             authrpc_port: Default::default(),
             authrpc_jwtsecret: Default::default(),
             p2p_disabled: Default::default(),
+            p2p_addr: None,
             p2p_port: Default::default(),
             discovery_port: Default::default(),
             network: Default::default(),

cmd/ethrex/initializers.rs

@@ -30,7 +30,7 @@ use std::env;
 use std::{
     fs,
     io::IsTerminal,
-    net::SocketAddr,
+    net::{IpAddr, SocketAddr},
     path::{Path, PathBuf},
     sync::Arc,
     time::{SystemTime, UNIX_EPOCH},
@@ -299,22 +299,22 @@ pub fn get_signer(datadir: &Path) -> SecretKey {
 }
 
 pub fn get_local_p2p_node(opts: &Options, signer: &SecretKey) -> Node {
-    let udp_socket_addr = parse_socket_addr("::", &opts.discovery_port)
-        .expect("Failed to parse discovery address and port");
-    let tcp_socket_addr =
-        parse_socket_addr("::", &opts.p2p_port).expect("Failed to parse addr and port");
-
-    let p2p_node_ip = local_ip()
-        .unwrap_or_else(|_| local_ipv6().expect("Neither ipv4 nor ipv6 local address found"));
+    let tcp_port = opts.p2p_port.parse().expect("Failed to parse p2p port");
+    let udp_port = opts
+        .discovery_port
+        .parse()
+        .expect("Failed to parse discovery port");
+
+    let p2p_node_ip: IpAddr = if let Some(addr) = &opts.p2p_addr {
+        addr.parse().expect("Failed to parse p2p address")
+    } else {
+        local_ip()
+            .unwrap_or_else(|_| local_ipv6().expect("Neither ipv4 nor ipv6 local address found"))
+    };
 
     let local_public_key = public_key_from_signing_key(signer);
 
-    let node = Node::new(
-        p2p_node_ip,
-        udp_socket_addr.port(),
-        tcp_socket_addr.port(),
-        local_public_key,
-    );
+    let node = Node::new(p2p_node_ip, udp_port, tcp_port, local_public_key);
 
     // TODO Find a proper place to show node information
     // https://github.com/lambdaclass/ethrex/issues/836

docs/CLI.md

@@ -78,6 +78,8 @@ P2P options:
 
       --p2p.disabled
 
+      --p2p.addr <ADDRESS>
+          Listening address for the P2P protocol.
 
       --p2p.port <PORT>
           TCP port for P2P protocol.