From ced33cb53deac2ef9edd5aada0f1fcbfb85ec509 Mon Sep 17 00:00:00 2001
From: Charles Lowell <10964656+chlowell@users.noreply.github.com>
Date: Fri, 27 Feb 2026 18:59:27 -0800
Subject: [PATCH 1/2] Go: RPC client loop expects stdout close

---
 go/internal/jsonrpc2/jsonrpc2.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/go/internal/jsonrpc2/jsonrpc2.go b/go/internal/jsonrpc2/jsonrpc2.go
index 09505c06d..8ff86e481 100644
--- a/go/internal/jsonrpc2/jsonrpc2.go
+++ b/go/internal/jsonrpc2/jsonrpc2.go
@@ -4,8 +4,10 @@ import (
 	"bufio"
 	"crypto/rand"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
+	"os"
 	"reflect"
 	"sync"
 	"sync/atomic"
@@ -306,7 +308,7 @@ func (c *Client) readLoop() {
 			line, err := reader.ReadString('\n')
 			if err != nil {
 				// Only log unexpected errors (not EOF or closed pipe during shutdown)
-				if err != io.EOF && c.running.Load() {
+				if err != io.EOF && !errors.Is(err, os.ErrClosed) && c.running.Load() {
 					fmt.Printf("Error reading header: %v\n", err)
 				}
 				return

From ba89a4e42e2476ecb1dee3496c9228b606e8f496 Mon Sep 17 00:00:00 2001
From: Charles Lowell <10964656+chlowell@users.noreply.github.com>
Date: Mon, 2 Mar 2026 07:47:39 -0800
Subject: [PATCH 2/2] handle body read errors similarly

---
 go/internal/jsonrpc2/jsonrpc2.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/go/internal/jsonrpc2/jsonrpc2.go b/go/internal/jsonrpc2/jsonrpc2.go
index 8ff86e481..be02bbbbd 100644
--- a/go/internal/jsonrpc2/jsonrpc2.go
+++ b/go/internal/jsonrpc2/jsonrpc2.go
@@ -333,7 +333,10 @@ func (c *Client) readLoop() {
 		// Read message body
 		body := make([]byte, contentLength)
 		if _, err := io.ReadFull(reader, body); err != nil {
-			fmt.Printf("Error reading body: %v\n", err)
+			// Only log unexpected errors (not EOF or closed pipe during shutdown)
+			if err != io.EOF && !errors.Is(err, os.ErrClosed) && c.running.Load() {
+				fmt.Printf("Error reading body: %v\n", err)
+			}
 			return
 		}