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−.. -*- coding: utf-8; -*-
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−
+
−=======
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− HTTP.
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−=======
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−.. contents::
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−   :local:
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−
+
−Command line tools for HTTP protocol.
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−=====================================
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−
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−http://daniel.haxx.se/docs/curl-vs-wget.html
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−  Comparing curl and wget.
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−
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−Recursive site download.
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−========================
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−
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−``curl`` does not allow recursive site downloading, only ``wget`` can do this::
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−
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−  $ wget -r -np -nc -e robots=off -p -k http://DOMAIN/PATH
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−
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−Get server response header.
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−===========================
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−::
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−
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−  $ wget --server-response http://example.com
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−  $ wget -S http://example.com    # short variant
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−
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−  $ curl --dump-header - http://example.com
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−  $ curl -D - http://example.com
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−
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−View cookies from site.
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−=======================
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−::
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−
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−  $ wget --save-cookies FILE -O -  http://example.com  >/dev/null
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−  $ curl --cookie-jar FILE -o - http://example.com  >/dev/null
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−  $ curl -c FILE -o - http://example.com  >/dev/null
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−
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−Send cookies to site.
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−=====================
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−::
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−
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−  $ wget --load-cookies FILE  http://example.com
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−  $ curl --cookie $name=$data  http://example.com
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−  $ curl -b $name=$data  http://example.com
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−
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−Send specific header line.
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−==========================
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−::
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−
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−  $ wget --header='Accept-Charset: iso-8859-2' --header='Accept-Language: ru' http://example.com
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−  $ curl --header 'Accept-Charset: iso-8859-2' http://example.com
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−  $ curl -H 'Accept-Charset: iso-8859-2' http://example.com
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−
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−Send POST request.
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−==================
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−
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−Log in to the server. This can be done only once::
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−
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−  $ wget --save-cookies cookies.txt --post-data 'user=foo&password=bar' http://server.com/auth.php
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−
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−Now grab the page or pages we care about::
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−
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−  $ wget --load-cookies cookies.txt -p http://server.com/interesting/article.php
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−
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−Web server in Cygwin.
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−=====================
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−::
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−
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−  $ setup -p apache2,lighttpd,dhttp
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−
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−Compressing HTTP data.
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−======================
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−
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−Starting with HTTP/1.1, web clients can indicate support for compression::
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−
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−  Accept-Encoding: gzip, deflate
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−
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−Web server notifies the web client of this via the Content-Encoding header in
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−the response::
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−
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−  Content-Encoding: gzip
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−
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−ETags.
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−======
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−
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−Server respond::
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−
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−  HTTP/1.1 200 OK
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−  Last-Modified: Tue, 12 Dec 2006 03:03:59 GMT
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−  ETag: "10c24bc-4ab-457e1c1f"
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−  Content-Length: 12195
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−
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−Lately client send::
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−
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−  GET /i/yahoo.gif HTTP/1.1
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−  Host: us.yimg.com
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−  If-Modified-Since: Tue, 12 Dec 2006 03:03:59 GMT
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−  If-None-Match: "10c24bc-4ab-457e1c1f"
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−
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−and get respond::
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−
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−  HTTP/1.1 304 Not Modified
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−