Method request_stop

server/src/server/http_server.h:266–268

Async-signal-safe: only sets the stopping flag. The accept loop polls this flag on a short timeout, so it wakes regardless of which thread the signal is delivered to. (Closing listen_fd_ here is unsafe: on Linux a close() from another thread does not wake a blocked accept(), and it races the accept loop's own close on exit.)

namespace http_detail {

inline constexpr int kFlowKvInertMinTokens = 512;

// Small policy helpers kept outside HttpServer so model-free unit tests use
// the same decisions as the request path.
int flowkv_activation_threshold(const ServerConfig & config);