fix(stream): use platform-specific socket options for Windows cross-compilation

internal/engine/sockopt_unix.go

@@ -0,0 +1,9 @@
+//go:build !windows
+
+package engine
+
+import "syscall"
+
+func setReuseAddr(fd uintptr) error {
+	return syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
+}

internal/engine/sockopt_windows.go

@@ -0,0 +1,9 @@
+//go:build windows
+
+package engine
+
+import "syscall"
+
+func setReuseAddr(fd uintptr) error {
+	return syscall.SetsockoptInt(syscall.Handle(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
+}

internal/engine/stream_server.go

@@ -72,7 +72,7 @@ func (ss *StreamServer) Listen(ctx context.Context) error {
 	lc := net.ListenConfig{
 		Control: func(network, address string, c syscall.RawConn) error {
 			return c.Control(func(fd uintptr) {
-				_ = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_REUSEADDR, 1)
+				_ = setReuseAddr(fd)
 			})
 		},
 	}