Method send_goaway_frame

src/proxy/http2/Http2ConnectionState.cc:2736–2755

As for graceful shutdown, TS should process outstanding stream as long as possible. As for signal connection error, TS should close connection immediately.

// As for graceful shutdown, TS should process outstanding stream as long as possible.
// As for signal connection error, TS should close connection immediately.
void
Http2ConnectionState::send_goaway_frame(Http2StreamId id, Http2ErrorCode ec)
{
  ink_assert(this->session != nullptr);

  Http2ConDebug(session, "Send GOAWAY frame: Error Code: %u, Last Stream Id: %d", static_cast<uint32_t>(ec), id);

  if (ec != Http2ErrorCode::HTTP2_ERROR_NO_ERROR) {
    Metrics::Counter::increment(http2_rsb.connection_errors_count);
  }

  this->tx_error_code = {ProxyErrorClass::SSN, static_cast<uint32_t>(ec)};

  Http2Goaway goaway;
  goaway.last_streamid = id;
  goaway.error_code    = ec;

  Http2GoawayFrame frame(goaway);
  this->session->xmit(frame);
}

void
Http2ConnectionState::send_window_update_frame(Http2StreamId id, uint32_t size)