From f94d6d51cf660b0dec253e4092d0cbaff74e9fd9 Mon Sep 17 00:00:00 2001
From: benedettadavico <benedettadavico@users.noreply.github.com>
Date: Fri, 24 Apr 2026 14:11:19 +0200
Subject: [PATCH] adding debugging traces

---
 nym-ip-packet-client/src/connect.rs            | 18 +++++++++++++++++-
 .../src/clients/connected_client_handler.rs    | 11 ++++++++++-
 .../ip-packet-router/src/messages/request.rs   |  2 ++
 .../ip-packet-router/src/messages/response.rs  | 10 +++++++++-
 4 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/nym-ip-packet-client/src/connect.rs b/nym-ip-packet-client/src/connect.rs
index e28405d321..78ca7b3dff 100644
--- a/nym-ip-packet-client/src/connect.rs
+++ b/nym-ip-packet-client/src/connect.rs
@@ -81,6 +81,16 @@ impl IprClientConnect {
 
     async fn send_connect_request(&self, ip_packet_router_address: Recipient) -> Result<u64> {
         let (request, request_id) = nym_ip_packet_requests::v9::new_connect_request(None);
+        tracing::info!(
+            request_id = request_id,
+            protocol_version = request.protocol.version,
+            current_version = crate::current::VERSION,
+            "Sending IPR connect request"
+        );
+        if let Ok(bytes) = request.to_bytes() {
+            let prefix = bytes.get(0..2).unwrap_or(&bytes);
+            tracing::info!(request_id = request_id, bytes_0_2 = ?prefix, "IPR connect bytes");
+        }
 
         // We use 20 surbs for the connect request because typically the IPR is configured to have
         // a min threshold of 10 surbs that it reserves for itself to request additional surbs.
@@ -129,7 +139,13 @@ impl IprClientConnect {
                         for msg in msgs {
                             // Confirm that the version is correct
                             if let Err(err) = check_ipr_message_version(&msg) {
-                                tracing::info!("Mixnet message version mismatch: {err}");
+                                let raw: &[u8] = msg.message.as_ref();
+                                tracing::info!(
+                                    first_byte = raw.first().copied(),
+                                    expected = crate::current::VERSION,
+                                    len = raw.len(),
+                                    "Mixnet message version mismatch: {err}"
+                                );
                                 continue;
                             }
 
diff --git a/service-providers/ip-packet-router/src/clients/connected_client_handler.rs b/service-providers/ip-packet-router/src/clients/connected_client_handler.rs
index e44b543276..f0b50580df 100644
--- a/service-providers/ip-packet-router/src/clients/connected_client_handler.rs
+++ b/service-providers/ip-packet-router/src/clients/connected_client_handler.rs
@@ -218,7 +218,16 @@ fn create_ip_packet_response(
         ClientVersion::V6 => IpPacketResponseV6::new_ip_packet(packets).to_bytes(),
         ClientVersion::V7 => IpPacketResponseV7::new_ip_packet(packets).to_bytes(),
         ClientVersion::V8 => IpPacketResponseV8::new_ip_packet(packets).to_bytes(),
-        ClientVersion::V9 => v9::new_ip_packet_response(packets).to_bytes(),
+        ClientVersion::V9 => {
+            let resp = v9::new_ip_packet_response(packets);
+            log::info!("IPR send data resp version byte: {}", resp.version);
+            let bytes = resp.to_bytes()?;
+            log::info!(
+                "IPR send data resp first byte: {:?}",
+                bytes.first().copied()
+            );
+            Ok(bytes)
+        }
     }
 }
 
diff --git a/service-providers/ip-packet-router/src/messages/request.rs b/service-providers/ip-packet-router/src/messages/request.rs
index 0c613a2fd4..6f1fd0b153 100644
--- a/service-providers/ip-packet-router/src/messages/request.rs
+++ b/service-providers/ip-packet-router/src/messages/request.rs
@@ -88,6 +88,7 @@ impl TryFrom<&ReconstructedMessage> for IpPacketRequest {
             .message
             .first_chunk::<2>()
             .ok_or(IpPacketRouterError::EmptyPacket)?;
+        log::info!("IPR recv header bytes: {:02x?}", request_version);
 
         // With version v8 and onwards, the type of the service provider is included in the
         // header.
@@ -103,6 +104,7 @@ impl TryFrom<&ReconstructedMessage> for IpPacketRequest {
         }
 
         let request_version = request_version[0];
+        log::info!("IPR recv version byte: {request_version}");
         match request_version {
             6 => {
                 let request_v6 = IpPacketRequestV6::from_reconstructed_message(reconstructed)
diff --git a/service-providers/ip-packet-router/src/messages/response.rs b/service-providers/ip-packet-router/src/messages/response.rs
index deefccc146..0955b1e25e 100644
--- a/service-providers/ip-packet-router/src/messages/response.rs
+++ b/service-providers/ip-packet-router/src/messages/response.rs
@@ -133,7 +133,15 @@ impl VersionedResponse {
             ClientVersion::V9 => {
                 let mut resp = IpPacketResponseV8::try_from(self)?;
                 resp.version = nym_ip_packet_requests::v9::VERSION;
-                resp.to_bytes()
+                log::info!("IPR send control resp version byte: {}", resp.version);
+                let bytes = resp.to_bytes();
+                if let Ok(ref bytes) = bytes {
+                    log::info!(
+                        "IPR send control resp first byte: {:?}",
+                        bytes.first().copied()
+                    );
+                }
+                bytes
             }
         }
         .map_err(|err| IpPacketRouterError::FailedToSerializeResponsePacket { source: err })