Method tunnel_handler_post

src/proxy/http/HttpSM.cc:2766–2858

int HttpSM::tunnel_handler_post(int event, void* data) Handles completion of any http request body tunnel Having 'post' in its name is a misnomer

//     Having 'post' in its name is a misnomer
//
int
HttpSM::tunnel_handler_post(int event, void *data)
{
  STATE_ENTER(&HttpSM::tunnel_handler_post, event);

  HttpTunnelProducer *p = _ua.get_txn() != nullptr ? tunnel.get_producer(_ua.get_txn()) : tunnel.get_producer(HT_HTTP_CLIENT);
  if (!p) {
    return 0; // Cannot do anything if there is no producer
  }

  switch (event) {
  case HTTP_TUNNEL_EVENT_DONE: // Tunnel done.
    if (p->handler_state == HTTP_SM_POST_UA_FAIL) {
      // post failed
      switch (t_state.client_info.state) {
      case HttpTransact::ACTIVE_TIMEOUT:
        call_transact_and_set_next_state(HttpTransact::PostActiveTimeoutResponse);
        return 0;
      case HttpTransact::INACTIVE_TIMEOUT:
        call_transact_and_set_next_state(HttpTransact::PostInactiveTimeoutResponse);
        return 0;
      default:
        break;
      }
    }
    break;
  case VC_EVENT_WRITE_READY: // iocore may callback first before send.
    return 0;
  case VC_EVENT_EOS:                // SSLNetVC may callback EOS during write error (6.0.x or early)
  case VC_EVENT_ERROR:              // Send HTTP 408 error
  case VC_EVENT_WRITE_COMPLETE:     // tunnel_handler_post_ua has sent HTTP 408 response
  case VC_EVENT_INACTIVITY_TIMEOUT: // _ua.get_txn() timeout during sending the HTTP 408 response
  case VC_EVENT_ACTIVE_TIMEOUT:     // _ua.get_txn() timeout
    if (_ua.get_entry()->write_buffer) {
      free_MIOBuffer(_ua.get_entry()->write_buffer);
      _ua.get_entry()->write_buffer = nullptr;
    }
    if (!p->handler_state) {
      p->handler_state = HTTP_SM_POST_UA_FAIL;
    }
    break;
  case VC_EVENT_READ_READY:
  case VC_EVENT_READ_COMPLETE:
  default:
    ink_assert(!"not reached");
    return 0;
  }

  ink_assert(event == HTTP_TUNNEL_EVENT_DONE);
  ink_assert(data == &tunnel);
  // The tunnel calls this when it is done

  int p_handler_state = p->handler_state;
  if (is_waiting_for_full_body && !this->is_postbuf_valid()) {
    p_handler_state = HTTP_SM_POST_SERVER_FAIL;
  }
  if (p->vc_type != HT_BUFFER_READ) {
    tunnel_handler_post_or_put(p);