Debug log connection peer spec on handshake

Keeping this at debug level for now, but at least the information is
readily available.

2 files changed, 13 insertions, 1 deletions

diff --git a/fnet/src/vespa/fnet/connection.cpp b/fnet/src/vespa/fnet/connection.cpp
index e028afe5deb..1a5834d6e96 100644
--- a/fnet/src/vespa/fnet/connection.cpp
+++ b/fnet/src/vespa/fnet/connection.cpp
@@ -218,11 +218,12 @@ FNET_Connection::handshake()
     bool broken = false;
     switch (_socket->handshake()) {
     case vespalib::CryptoSocket::HandshakeResult::FAIL:
-        LOG(debug, "Connection(%s): handshake failed", GetSpec());
+        LOG(debug, "Connection(%s): handshake failed with peer %s", GetSpec(), GetPeerSpec().c_str());
         SetState(FNET_CLOSED);
         broken = true;
         break;
     case vespalib::CryptoSocket::HandshakeResult::DONE: {
+        LOG(debug, "Connection(%s): handshake done with peer %s", GetSpec(), GetPeerSpec().c_str());
         EnableReadEvent(true);
         EnableWriteEvent(writePendingAfterConnect());
         _flags._framed = (_socket->min_read_buffer_size() > 1);
@@ -752,3 +753,9 @@ FNET_Connection::HandleWriteEvent()
     }
     return !broken;
 }
+
+vespalib::string
+FNET_Connection::GetPeerSpec() const
+{
+    return vespalib::SocketAddress::peer_address(_socket->get_fd()).spec();
+}
diff --git a/fnet/src/vespa/fnet/connection.h b/fnet/src/vespa/fnet/connection.h
index 44ad3fea97d..40f826243bf 100644
--- a/fnet/src/vespa/fnet/connection.h
+++ b/fnet/src/vespa/fnet/connection.h
@@ -230,6 +230,11 @@ private:
     bool Write();
 
     bool writePendingAfterConnect();
+
+    /**
+     * @return address spec of socket peer. Only makes sense to call on non-listening sockets.
+     */
+    vespalib::string GetPeerSpec() const;
 public:
 
     /**