Function SerializeH2SettingsFrameAndWU

src/brpc/policy/http2_rpc_protocol.cpp:253–265

}

static size_t SerializeH2SettingsFrameAndWU(const H2Settings& in, void* out) {
    uint8_t* p = (uint8_t*)out;
    size_t nb = SerializeH2Settings(in, p + FRAME_HEAD_SIZE);
    SerializeFrameHead(p, nb, H2_FRAME_SETTINGS, 0, 0);
    p += FRAME_HEAD_SIZE + nb;
    if (in.connection_window_size > H2Settings::DEFAULT_INITIAL_WINDOW_SIZE) {
        SerializeFrameHead(p, 4, H2_FRAME_WINDOW_UPDATE, 0, 0);
        SaveUint32(p + FRAME_HEAD_SIZE,
                   in.connection_window_size - H2Settings::DEFAULT_INITIAL_WINDOW_SIZE);
        p += FRAME_HEAD_SIZE + 4;
    }
    return static_cast<size_t>(p - (uint8_t*)out);
}

inline bool AddWindowSize(butil::atomic<int64_t>* window_size, int64_t diff) {
    // A sender MUST NOT allow a flow-control window to exceed 2^31 - 1.