lib/extension-permessage-deflate.h

   1
   2 #include <zlib.h>
   3
   4 #define DEFLATE_FRAME_COMPRESSION_LEVEL_SERVER 1
   5 #define DEFLATE_FRAME_COMPRESSION_LEVEL_CLIENT Z_DEFAULT_COMPRESSION
   6
   7 enum arg_indexes {
   8         PMD_SERVER_NO_CONTEXT_TAKEOVER,
   9         PMD_CLIENT_NO_CONTEXT_TAKEOVER,
  10         PMD_SERVER_MAX_WINDOW_BITS,
  11         PMD_CLIENT_MAX_WINDOW_BITS,
  12         PMD_RX_BUF_PWR2,
  13         PMD_TX_BUF_PWR2,
  14         PMD_COMP_LEVEL,
  15         PMD_MEM_LEVEL,
  16
  17         PMD_ARG_COUNT
  18 };
  19
  20 struct lws_ext_pm_deflate_priv {
  21         z_stream rx;
  22         z_stream tx;
  23
  24         unsigned char *buf_rx_inflated; /* RX inflated output buffer */
  25         unsigned char *buf_tx_deflated; /* TX deflated output buffer */
  26
  27         size_t count_rx_between_fin;
  28
  29         unsigned char args[PMD_ARG_COUNT];
  30         unsigned char tx_held[5];
  31         unsigned char rx_held;
  32
  33         unsigned char tx_init:1;
  34         unsigned char rx_init:1;
  35         unsigned char compressed_out:1;
  36         unsigned char rx_held_valid:1;
  37         unsigned char tx_held_valid:1;
  38         unsigned char rx_append_trailer:1;
  39         unsigned char pending_tx_trailer:1;
  40 };
  41