feat: single-owner game state, transactional lifecycle, durable money on server stop

1 files changed, 10 insertions, 0 deletions

diff --git a/internal/net/conn.go b/internal/net/conn.go
index 2fff0bc..6d78d8f 100644
--- a/internal/net/conn.go
+++ b/internal/net/conn.go
@@ -6,12 +6,18 @@ import (
 	"io"
 	"net"
 	"strings"
+	"time"
 )
 
 type Conn interface {
 	ReadMessage() (string, error)
 	io.Writer
 	io.Closer
+	// SetWriteDeadline is optional for transports: sessions that support it
+	// enforce per-write deadlines so a stalled peer surfaces as a timeout
+	// instead of a hung writer goroutine. Implementations without deadline
+	// support return nil (deadlines are best-effort).
+	SetWriteDeadline(t time.Time) error
 	SetEcho(bool) error
 }
 
@@ -70,6 +76,10 @@ func (t *tcpConn) Write(b []byte) (int, error) {
 	return t.conn.Write(b)
 }
 
+func (t *tcpConn) SetWriteDeadline(ts time.Time) error {
+	return t.conn.SetWriteDeadline(ts)
+}
+
 func (t *tcpConn) Close() error {
 	return t.conn.Close()
 }