text: /*
   * Copyright (c) 2011 and 2012, Dustin Lundquist <dustin@null-ptr.net>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   *    this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  #ifndef CONNECTION_H
  #define CONNECTION_H
  
  #include <sys/socket.h>
  #include <sys/queue.h>
  #include <ev.h>
  #include "listener.h"
  #include "buffer.h"
  
  struct Connection {
      enum State {
          NEW,            /* Before successful accept */
          ACCEPTED,       /* Newly accepted client connection */
          PARSED,         /* Parsed initial request and extracted hostname */
          RESOLVING,      /* DNS query in progress */
          RESOLVED,       /* Server socket address resolved */
          CONNECTED,      /* Connected to server */
          SERVER_CLOSED,  /* Client closed socket */
          CLIENT_CLOSED,  /* Server closed socket */
          CLOSED          /* Both sockets closed */
      } state;
  
      struct {
          struct sockaddr_storage addr, local_addr;
          socklen_t addr_len, local_addr_len;
          struct ev_io watcher;
          struct Buffer *buffer;
      } client, server;
      struct Listener *listener;
      const char *hostname; /* Requested hostname */
      size_t hostname_len;
      size_t header_len;
      struct ResolvQuery *query_handle;
      ev_tstamp established_timestamp;
      int use_proxy_header;
  
      TAILQ_ENTRY(Connection) entries;
  };
  
  void init_connections();
  int accept_connection(struct Listener *, struct ev_loop *);
  int accept_statusconnection(struct Listener *, struct ev_loop *);
  void free_connections(struct ev_loop *);
  void print_connections_file();
  void print_connections(int);
  
  #endif
  