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   1 # pecl/http v2
   2
   3 > **Note:** This documentation is work-in-progress.
   4
   5 ## About:
   6
   7 Extended HTTP support. Again.
   8
   9 * Introduces the http namespace.
  10 * PHP stream based message bodies.
  11 * Encapsulated env request/response.
  12 * Versatile error handling.
  13 * Modular client support.
  14
  15 ## Installation:
  16
  17 This extension is hosted at [PECL](http://pecl.php.net) and can be installed with [PEAR](http://pear.php.net)'s pecl command:
  18
  19     # pecl install pecl_http
  20
  21 ## Dependencies:
  22
  23 This extension unconditionally depends on the pre-loaded presence of the following PHP extensions:
  24
  25 * raphf
  26 * propro
  27 * spl
  28
  29
  30 If configured ```--with-http-shared-deps``` (default) it requires on the pre-loaded presence of the following extensions, as long as they where available at build time:
  31
  32 * hash
  33 * iconv
  34 * json
  35
  36 ## Conflicts:
  37
  38 pecl/http-v2 conflicts with thw following extensions:
  39
  40 * http-v1
  41 * event
  42
  43 ## INI Directives:
  44
  45 * http.etag.mode = "crc32b"
  46   Default hash method for dynamic response payloads to generate an ETag.
  47
  48 ## Stream Filters:
  49
  50 The http extension registers the ```http.*``` namespace for its stream filters. Provided stream filters are:
  51
  52 * http.chunked_decode
  53   Decode a stream encoded with chunked transfer encoding.
  54 * http.chunked_encode
  55   Encode a stream with chunked transfer encoding.
  56 * http.inflate
  57   Decode a stream encoded with deflate/zlib/gzip encoding.
  58 * http.deflate
  59   Encode a stream with deflate/zlib/gzip encoding.