Scale Stack 0.3 Developer Documentation

scalestack/proxy/server.cc

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/*
 * Scale Stack
 *
 * Copyright 2010 Eric Day
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "config.h"

#include <scalestack/kernel/module.h>
#include <scalestack/proxy/client.h>
#include <scalestack/proxy/server.h>
#include <scalestack/proxy/server_service.h>

namespace scalestack
{
namespace proxy
{

/*
 * Public methods.
 */

server::server(kernel::module& module, server_service& server_service):
  network::stream(module),
  _size(),
  _buffer(),
  _client(),
  _server_service(server_service)
{
}

void server::shutdown(void)
{
  if (_client == NULL)
    stop();
  else
    _client->shutdown();
}

void server::run(void)
{
  client* client = _client;
  _client = NULL;
  client->stop();
  stop();
}

void server::connected(void)
{
  _client = _server_service.get_client();
  if (_client == NULL)
    shutdown();
  else
    _client->set_server(this);
}

size_t server::read(uint8_t* buffer, size_t size)
{
  _size = size;
  _buffer = buffer;
  return _client_write();
}

void server::flush_write(void)
{
  _client->continue_write();
}

void server::continue_write(void)
{
  consume(_client_write());
}

/*
 * Private methods.
 */

size_t server::_client_write(void)
{
  size_t written = _client->write(_buffer, _size, true);
  _size -= written;
  _buffer += written;
  return written;
}

} /* namespace proxy */
} /* namespace scalestack */

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