test

// ============================================================================

void libhttppp::Http3QuicSocket::sendControlStreams() {

    if ( getSelectedAlpn() != "h3" && getSelectedAlpn() != "h3-29")

    // Empty means this side hasn't recorded a selected ALPN at all -- the

    // client role currently never learns it back from the server's

    // EncryptedExtensions (processEncryptedExtensions() in libnetplus's

    // quic.cpp only parses quic_transport_parameters/early_data, not the

    // ALPN extension), so an Http3QuicSocket client's getSelectedAlpn() is

    // always "" even after a successful h3 handshake. Only bail out on an

    // ALPN we positively know isn't HTTP/3 -- don't treat "unknown" the

    // same as "negotiated something else".

    const std::string &alpn = getSelectedAlpn();

    if (!alpn.empty() && alpn != "h3" && alpn != "h3-29")

        return;

    if (_ctrlStreamsSent) return;