From 350b0e6b7d240686638094a7a6ec2b469d04a065 Mon Sep 17 00:00:00 2001
From: Indra Gunawan <1284811+coderbuzz@users.noreply.github.com>
Date: Wed, 1 Jul 2026 17:44:41 +0700
Subject: [PATCH] perf: kirim keystrokes raw text, resize via binary frame,
 hapus OCRNL

---
 internal/http/console.go            | 22 +++++++++++-----------
 internal/http/templates/layout.html |  5 +++--
 internal/ssh/client.go              |  1 -
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/internal/http/console.go b/internal/http/console.go
index 9810c4e..e44dabb 100644
--- a/internal/http/console.go
+++ b/internal/http/console.go
@@ -94,24 +94,24 @@ func (h *ConsoleHandler) ServeWS(w http.ResponseWriter, r *http.Request) {
 	// WebSocket → SSH stdin
 	go func() {
 		for {
-			_, msg, err := conn.ReadMessage()
+			messageType, msg, err := conn.ReadMessage()
 			if err != nil {
 				errCh <- err
 				return
 			}
-			var input ssh.Input
-			if json.Unmarshal(msg, &input) == nil {
-				if input.Resize != nil {
-					inCh <- input
-					continue
-				}
-				if len(input.Data) > 0 {
+
+			switch messageType {
+			case websocket.TextMessage:
+				// Keystrokes — raw text, no JSON parsing
+				inCh <- ssh.Input{Data: string(msg)}
+
+			case websocket.BinaryMessage:
+				// Resize events — JSON
+				var input ssh.Input
+				if json.Unmarshal(msg, &input) == nil && input.Resize != nil {
 					inCh <- input
-					continue
 				}
 			}
-
-			inCh <- ssh.Input{Data: string(msg)}
 		}
 	}()
 
diff --git a/internal/http/templates/layout.html b/internal/http/templates/layout.html
index d5cafbf..faee3e8 100644
--- a/internal/http/templates/layout.html
+++ b/internal/http/templates/layout.html
@@ -415,9 +415,10 @@
 		document.getElementById('console-status').textContent = 'Connected';
 		document.getElementById('console-status').className = 'badge badge-online';
 		term.focus();
+		var enc = new TextEncoder();
 		var dims = fitAddon.proposeDimensions();
 		if (dims) {
-			ws.send(JSON.stringify({resize: {width: dims.cols, height: dims.rows}}));
+			ws.send(enc.encode(JSON.stringify({resize: {width: dims.cols, height: dims.rows}})));
 		}
 	};
 
@@ -448,7 +449,7 @@
 		fitAddon.fit();
 		var dims = fitAddon.proposeDimensions();
 		if (dims) {
-			ws.send(JSON.stringify({resize: {width: dims.cols, height: dims.rows}}));
+			ws.send(enc.encode(JSON.stringify({resize: {width: dims.cols, height: dims.rows}})));
 		}
 	};
 	window.addEventListener('resize', window._consoleResizeHandler);
diff --git a/internal/ssh/client.go b/internal/ssh/client.go
index 0bc399d..48cdf1e 100644
--- a/internal/ssh/client.go
+++ b/internal/ssh/client.go
@@ -95,7 +95,6 @@ func (c *Client) Shell(ctx context.Context, rows, cols int) (<-chan Output, chan
 
 	if err := session.RequestPty("xterm-256color", rows, cols, gossh.TerminalModes{
 		gossh.ECHO:          1,
-		gossh.OCRNL:         1,
 		gossh.TTY_OP_ISPEED: 14400,
 		gossh.TTY_OP_OSPEED: 14400,
 	}); err != nil {