C++ TcpConnection::onError方法代码示例

void
SocketConnList::drain()
{
  // First, let all the Connection prepare for drain
  ConnectionList::drain();

  // this will block until draining is complete
  KernelBufferDrainer::instance().monitorSockets(DRAINER_CHECK_FREQ);

  // handle disconnected sockets
  const map<ConnectionIdentifier, vector<char> > &discn =
    KernelBufferDrainer::instance().getDisconnectedSockets();

  map<ConnectionIdentifier, vector<char> >::const_iterator it;
  for (it = discn.begin(); it != discn.end(); it++) {
    const ConnectionIdentifier &id = it->first;
    TcpConnection *con =
      (TcpConnection *)SocketConnList::instance().getConnection(id);
    JTRACE("recreating disconnected socket") (id);

    // reading from the socket, and taking the error, resulted in an
    // implicit close().
    // we will create a new, broken socket that is not closed
    con->onError();
  }
}

err_t TcpConnection::staticOnReceive(void *arg, tcp_pcb *tcp, pbuf *p, err_t err)
{
//	debugf("Static OnReceive buf = %d", tcp_sndbuf(tcp));
	TcpConnection* con = (TcpConnection*)arg;
	err_t ret_err;
	//Serial.println("echo_recv!");

	if (con == NULL)
	{
		if (p != NULL)
		{
		  /* Inform TCP that we have taken the data. */
		  tcp_recved(tcp, p->tot_len);
		  pbuf_free(p);
		}
		closeTcpConnection(tcp);
		return ERR_OK;
	}
	else
		con->sleep = 0;

	if (err != ERR_OK /*&& err != ERR_CLSD && err != ERR_RST*/)
	{
		debugf("Received ERROR %d", err);
		/* exit and free resources, for unkown reason */
		if (p != NULL)
		{
		  /* Inform TCP that we have taken the data. */
		  tcp_recved(tcp, p->tot_len);
		  pbuf_free(p);
		}
		closeTcpConnection(tcp); // ??
		con->tcp = NULL;
		con->onError(err);
		//con->close();
		return err == ERR_ABRT ? ERR_ABRT : ERR_OK;
	}

	//if (tcp != NULL && tcp->state == ESTABLISHED) // If active
	/* We have taken the data. */
	if (p != NULL)
		tcp_recved(tcp, p->tot_len);

	err_t res = con->onReceive(p);

	if (p != NULL)
		pbuf_free(p);
	else
	{
		con->close();
		closeTcpConnection(tcp);
	}

	con->checkSelfFree();
	//debugf("<staticOnReceive");
	return res;
}

void TcpConnection::staticOnError(void *arg, err_t err)
{
	TcpConnection* con = (TcpConnection*)arg;
	if (con == NULL) return;

	con->tcp = NULL; // IMPORTANT. No available connection after error!
	con->onError(err);
	con->checkSelfFree();
	//debugf("<staticOnError");
}