text: #ifndef HEADER_CURL_MULTIIF_H
  #define HEADER_CURL_MULTIIF_H
  /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
   *
   * This software is licensed as described in the file COPYING, which
   * you should have received as part of this distribution. The terms
   * are also available at http://curl.haxx.se/docs/copyright.html.
   *
   * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   * copies of the Software, and permit persons to whom the Software is
   * furnished to do so, under the terms of the COPYING file.
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   * KIND, either express or implied.
   *
   ***************************************************************************/
  
  
  
  /*
   * Prototypes for library-wide functions provided by multi.c
   */
  void Curl_expire(struct SessionHandle *data, long milli);
  
  bool Curl_multi_pipeline_enabled(const struct Curl_multi* multi);
  void Curl_multi_handlePipeBreak(struct SessionHandle *data);
  
  /* Internal version of curl_multi_init() accepts size parameters for the
     socket and connection hashes */
  struct Curl_multi *Curl_multi_handle(int hashsize, int chashsize);
  
  /* the write bits start at bit 16 for the *getsock() bitmap */
  #define GETSOCK_WRITEBITSTART 16
  
  #define GETSOCK_BLANK 0 /* no bits set */
  
  /* set the bit for the given sock number to make the bitmap for writable */
  #define GETSOCK_WRITESOCK(x) (1 << (GETSOCK_WRITEBITSTART + (x)))
  
  /* set the bit for the given sock number to make the bitmap for readable */
  #define GETSOCK_READSOCK(x) (1 << (x))
  
  #ifdef DEBUGBUILD
   /*
    * Curl_multi_dump is not a stable public function, this is only meant to
    * allow easier tracking of the internal handle's state and what sockets
    * they use. Only for research and development DEBUGBUILD enabled builds.
    */
  void Curl_multi_dump(const struct Curl_multi *multi_handle);
  #endif
  
  /* Update the current connection of a One_Easy handle */
  void Curl_multi_set_easy_connection(struct SessionHandle *handle,
                                      struct connectdata *conn);
  
  void Curl_multi_process_pending_handles(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_MAX_HOST_CONNECTIONS option */
  size_t Curl_multi_max_host_connections(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_MAX_PIPELINE_LENGTH option */
  size_t Curl_multi_max_pipeline_length(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE option */
  curl_off_t Curl_multi_content_length_penalty_size(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE option */
  curl_off_t Curl_multi_chunk_length_penalty_size(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_PIPELINING_SITE_BL option */
  struct curl_llist *Curl_multi_pipelining_site_bl(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_PIPELINING_SERVER_BL option */
  struct curl_llist *Curl_multi_pipelining_server_bl(struct Curl_multi *multi);
  
  /* Return the value of the CURLMOPT_MAX_TOTAL_CONNECTIONS option */
  size_t Curl_multi_max_total_connections(struct Curl_multi *multi);
  
  /*
   * Curl_multi_closed()
   *
   * Used by the connect code to tell the multi_socket code that one of the
   * sockets we were using have just been closed.  This function will then
   * remove it from the sockethash for this handle to make the multi_socket API
   * behave properly, especially for the case when libcurl will create another
   * socket again and it gets the same file descriptor number.
   */
  
  void Curl_multi_closed(struct connectdata *conn, curl_socket_t s);
  
  #endif /* HEADER_CURL_MULTIIF_H */
  