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| 2 | <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/network/qhttp.cpp:331 -->
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| 6 | <title>QHttpHeader Class</title>
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| 20 | <font color="#004faf">Home</font></a>
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| 22 | <font color="#004faf">All Classes</font></a>
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| 24 | <font color="#004faf">Main Classes</font></a>
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| 26 | <font color="#004faf">Annotated</font></a>
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| 30 | <font color="#004faf">Functions</font></a>
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| 31 | </td>
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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QHttpHeader Class Reference<br><small>[<a href="network.html">network module</a>]</small></h1>
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| 33 |
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| 34 | <p>The QHttpHeader class contains header information for HTTP.
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| 35 | <a href="#details">More...</a>
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| 36 | <p><tt>#include <<a href="qhttp-h.html">qhttp.h</a>></tt>
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| 37 | <p>Inherited by <a href="qhttpresponseheader.html">QHttpResponseHeader</a> and <a href="qhttprequestheader.html">QHttpRequestHeader</a>.
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| 38 | <p><a href="qhttpheader-members.html">List of all member functions.</a>
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| 39 | <h2>Public Members</h2>
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| 40 | <ul>
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| 41 | <li class=fn><a href="#QHttpHeader"><b>QHttpHeader</b></a> ()</li>
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| 42 | <li class=fn><a href="#QHttpHeader-2"><b>QHttpHeader</b></a> ( const QHttpHeader & header )</li>
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| 43 | <li class=fn><a href="#QHttpHeader-3"><b>QHttpHeader</b></a> ( const QString & str )</li>
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| 44 | <li class=fn>virtual <a href="#~QHttpHeader"><b>~QHttpHeader</b></a> ()</li>
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| 45 | <li class=fn>QHttpHeader & <a href="#operator-eq"><b>operator=</b></a> ( const QHttpHeader & h )</li>
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| 46 | <li class=fn>QString <a href="#value"><b>value</b></a> ( const QString & key ) const</li>
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| 47 | <li class=fn>void <a href="#setValue"><b>setValue</b></a> ( const QString & key, const QString & value )</li>
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| 48 | <li class=fn>void <a href="#removeValue"><b>removeValue</b></a> ( const QString & key )</li>
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| 49 | <li class=fn>QStringList <a href="#keys"><b>keys</b></a> () const</li>
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| 50 | <li class=fn>bool <a href="#hasKey"><b>hasKey</b></a> ( const QString & key ) const</li>
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| 51 | <li class=fn>bool <a href="#hasContentLength"><b>hasContentLength</b></a> () const</li>
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| 52 | <li class=fn>uint <a href="#contentLength"><b>contentLength</b></a> () const</li>
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| 53 | <li class=fn>void <a href="#setContentLength"><b>setContentLength</b></a> ( int len )</li>
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| 54 | <li class=fn>bool <a href="#hasContentType"><b>hasContentType</b></a> () const</li>
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| 55 | <li class=fn>QString <a href="#contentType"><b>contentType</b></a> () const</li>
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| 56 | <li class=fn>void <a href="#setContentType"><b>setContentType</b></a> ( const QString & type )</li>
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| 57 | <li class=fn>virtual QString <a href="#toString"><b>toString</b></a> () const</li>
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| 58 | <li class=fn>bool <a href="#isValid"><b>isValid</b></a> () const</li>
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| 59 | <li class=fn>virtual int <a href="#majorVersion"><b>majorVersion</b></a> () const = 0</li>
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| 60 | <li class=fn>virtual int <a href="#minorVersion"><b>minorVersion</b></a> () const = 0</li>
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| 61 | </ul>
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| 62 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 63 |
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| 64 |
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| 65 | The QHttpHeader class contains header information for HTTP.
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| 66 |
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| 67 | <p>
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| 68 |
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| 69 | <p> In most cases you should use the more specialized derivatives of
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| 70 | this class, <a href="qhttpresponseheader.html">QHttpResponseHeader</a> and <a href="qhttprequestheader.html">QHttpRequestHeader</a>, rather
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| 71 | than directly using QHttpHeader.
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| 72 | <p> QHttpHeader provides the HTTP header fields. A HTTP header field
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| 73 | consists of a name followed by a colon, a single space, and the
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| 74 | field value. (See RFC 1945.) Field names are case-insensitive. A
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| 75 | typical header field looks like this:
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| 76 | <pre>
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| 77 | content-type: text/html
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| 78 | </pre>
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| 79 |
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| 80 | <p> In the API the header field name is called the "key" and the
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| 81 | content is called the "value". You can get and set a header
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| 82 | field's value by using its key with <a href="#value">value</a>() and <a href="#setValue">setValue</a>(), e.g.
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| 83 | <pre>
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| 84 | header.setValue( "content-type", "text/html" );
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| 85 | <a href="qstring.html">QString</a> contentType = header.value( "content-type" );
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| 86 | </pre>
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| 87 |
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| 88 | <p> Some fields are so common that getters and setters are provided
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| 89 | for them as a convenient alternative to using <a href="#value">value</a>() and
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| 90 | <a href="#setValue">setValue</a>(), e.g. <a href="#contentLength">contentLength</a>() and <a href="#contentType">contentType</a>(),
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| 91 | <a href="#setContentLength">setContentLength</a>() and <a href="#setContentType">setContentType</a>().
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| 92 | <p> Each header key has a <em>single</em> value associated with it. If you
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| 93 | set the value for a key which already exists the previous value
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| 94 | will be discarded.
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| 95 | <p> <p>See also <a href="qhttprequestheader.html">QHttpRequestHeader</a>, <a href="qhttpresponseheader.html">QHttpResponseHeader</a>, and <a href="io.html">Input/Output and Networking</a>.
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| 96 |
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| 97 | <hr><h2>Member Function Documentation</h2>
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| 98 | <h3 class=fn><a name="QHttpHeader"></a>QHttpHeader::QHttpHeader ()
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| 99 | </h3>
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| 100 | Constructs an empty HTTP header.
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| 101 |
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| 102 | <h3 class=fn><a name="QHttpHeader-2"></a>QHttpHeader::QHttpHeader ( const <a href="qhttpheader.html">QHttpHeader</a> & header )
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| 103 | </h3>
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| 104 | Constructs a copy of <em>header</em>.
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| 105 |
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| 106 | <h3 class=fn><a name="QHttpHeader-3"></a>QHttpHeader::QHttpHeader ( const <a href="qstring.html">QString</a> & str )
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| 107 | </h3>
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| 108 | Constructs a HTTP header for <em>str</em>.
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| 109 | <p> This constructor parses the string <em>str</em> for header fields and
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| 110 | adds this information. The <em>str</em> should consist of one or more
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| 111 | "\r\n" delimited lines; each of these lines should have the format
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| 112 | key, colon, space, value.
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| 113 |
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| 114 | <h3 class=fn><a name="~QHttpHeader"></a>QHttpHeader::~QHttpHeader ()<tt> [virtual]</tt>
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| 115 | </h3>
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| 116 | Destructor.
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| 117 |
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| 118 | <h3 class=fn>uint <a name="contentLength"></a>QHttpHeader::contentLength () const
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| 119 | </h3>
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| 120 | Returns the value of the special HTTP header field <tt>content-length</tt>.
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| 121 | <p> <p>See also <a href="#setContentLength">setContentLength</a>() and <a href="#hasContentLength">hasContentLength</a>().
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| 122 |
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| 123 | <h3 class=fn><a href="qstring.html">QString</a> <a name="contentType"></a>QHttpHeader::contentType () const
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| 124 | </h3>
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| 125 | Returns the value of the special HTTP header field <tt>content-type</tt>.
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| 126 | <p> <p>See also <a href="#setContentType">setContentType</a>() and <a href="#hasContentType">hasContentType</a>().
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| 127 |
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| 128 | <h3 class=fn>bool <a name="hasContentLength"></a>QHttpHeader::hasContentLength () const
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| 129 | </h3>
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| 130 | Returns TRUE if the header has an entry for the special HTTP
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| 131 | header field <tt>content-length</tt>; otherwise returns FALSE.
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| 132 | <p> <p>See also <a href="#contentLength">contentLength</a>() and <a href="#setContentLength">setContentLength</a>().
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| 133 |
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| 134 | <h3 class=fn>bool <a name="hasContentType"></a>QHttpHeader::hasContentType () const
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| 135 | </h3>
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| 136 | Returns TRUE if the header has an entry for the the special HTTP
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| 137 | header field <tt>content-type</tt>; otherwise returns FALSE.
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| 138 | <p> <p>See also <a href="#contentType">contentType</a>() and <a href="#setContentType">setContentType</a>().
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| 139 |
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| 140 | <h3 class=fn>bool <a name="hasKey"></a>QHttpHeader::hasKey ( const <a href="qstring.html">QString</a> & key ) const
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| 141 | </h3>
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| 142 | Returns TRUE if the HTTP header has an entry with the given <em>key</em>; otherwise returns FALSE.
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| 143 | <p> <p>See also <a href="#value">value</a>(), <a href="#setValue">setValue</a>(), and <a href="#keys">keys</a>().
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| 144 |
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| 145 | <h3 class=fn>bool <a name="isValid"></a>QHttpHeader::isValid () const
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| 146 | </h3>
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| 147 | Returns TRUE if the HTTP header is valid; otherwise returns FALSE.
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| 148 | <p> A QHttpHeader is invalid if it was created by parsing a malformed string.
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| 149 |
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| 150 | <h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QHttpHeader::keys () const
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| 151 | </h3>
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| 152 | Returns a list of the keys in the HTTP header.
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| 153 | <p> <p>See also <a href="#hasKey">hasKey</a>().
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| 154 |
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| 155 | <h3 class=fn>int <a name="majorVersion"></a>QHttpHeader::majorVersion () const<tt> [pure virtual]</tt>
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| 156 | </h3>
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| 157 |
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| 158 | <p> Returns the major protocol-version of the HTTP header.
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| 159 |
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| 160 | <p>Reimplemented in <a href="qhttpresponseheader.html#majorVersion">QHttpResponseHeader</a> and <a href="qhttprequestheader.html#majorVersion">QHttpRequestHeader</a>.
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| 161 | <h3 class=fn>int <a name="minorVersion"></a>QHttpHeader::minorVersion () const<tt> [pure virtual]</tt>
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| 162 | </h3>
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| 163 |
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| 164 | <p> Returns the minor protocol-version of the HTTP header.
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| 165 |
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| 166 | <p>Reimplemented in <a href="qhttpresponseheader.html#minorVersion">QHttpResponseHeader</a> and <a href="qhttprequestheader.html#minorVersion">QHttpRequestHeader</a>.
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| 167 | <h3 class=fn><a href="qhttpheader.html">QHttpHeader</a> & <a name="operator-eq"></a>QHttpHeader::operator= ( const <a href="qhttpheader.html">QHttpHeader</a> & h )
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| 168 | </h3>
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| 169 | Assigns <em>h</em> and returns a reference to this http header.
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| 170 |
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| 171 | <h3 class=fn>void <a name="removeValue"></a>QHttpHeader::removeValue ( const <a href="qstring.html">QString</a> & key )
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| 172 | </h3>
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| 173 | Removes the entry with the key <em>key</em> from the HTTP header.
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| 174 | <p> <p>See also <a href="#value">value</a>() and <a href="#setValue">setValue</a>().
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| 175 |
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| 176 | <h3 class=fn>void <a name="setContentLength"></a>QHttpHeader::setContentLength ( int len )
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| 177 | </h3>
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| 178 | Sets the value of the special HTTP header field <tt>content-length</tt>
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| 179 | to <em>len</em>.
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| 180 | <p> <p>See also <a href="#contentLength">contentLength</a>() and <a href="#hasContentLength">hasContentLength</a>().
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| 181 |
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| 182 | <h3 class=fn>void <a name="setContentType"></a>QHttpHeader::setContentType ( const <a href="qstring.html">QString</a> & type )
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| 183 | </h3>
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| 184 | Sets the value of the special HTTP header field <tt>content-type</tt> to
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| 185 | <em>type</em>.
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| 186 | <p> <p>See also <a href="#contentType">contentType</a>() and <a href="#hasContentType">hasContentType</a>().
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| 187 |
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| 188 | <p>Example: <a href="archivesearch-example.html#x475">network/archivesearch/archivedialog.ui.h</a>.
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| 189 | <h3 class=fn>void <a name="setValue"></a>QHttpHeader::setValue ( const <a href="qstring.html">QString</a> & key, const <a href="qstring.html">QString</a> & value )
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| 190 | </h3>
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| 191 | Sets the value of the entry with the <em>key</em> to <em>value</em>.
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| 192 | <p> If no entry with <em>key</em> exists, a new entry with the given <em>key</em>
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| 193 | and <em>value</em> is created. If an entry with the <em>key</em> already
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| 194 | exists, its value is discarded and replaced with the given <em>value</em>.
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| 195 | <p> <p>See also <a href="#value">value</a>(), <a href="#hasKey">hasKey</a>(), and <a href="#removeValue">removeValue</a>().
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| 196 |
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| 197 | <p>Example: <a href="archivesearch-example.html#x476">network/archivesearch/archivedialog.ui.h</a>.
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| 198 | <h3 class=fn><a href="qstring.html">QString</a> <a name="toString"></a>QHttpHeader::toString () const<tt> [virtual]</tt>
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| 199 | </h3>
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| 200 | Returns a string representation of the HTTP header.
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| 201 | <p> The string is suitable for use by the constructor that takes a
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| 202 | <a href="qstring.html">QString</a>. It consists of lines with the format: key, colon, space,
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| 203 | value, "\r\n".
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| 204 |
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| 205 | <h3 class=fn><a href="qstring.html">QString</a> <a name="value"></a>QHttpHeader::value ( const <a href="qstring.html">QString</a> & key ) const
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| 206 | </h3>
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| 207 | Returns the value for the entry with the given <em>key</em>. If no entry
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| 208 | has this <em>key</em>, an empty string is returned.
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| 209 | <p> <p>See also <a href="#setValue">setValue</a>(), <a href="#removeValue">removeValue</a>(), <a href="#hasKey">hasKey</a>(), and <a href="#keys">keys</a>().
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| 210 |
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| 211 | <!-- eof -->
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| 212 | <hr><p>
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| 213 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 214 | Copyright © 1995-2007
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| 215 | <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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| 216 | <table width=100% cellspacing=0 border=0><tr>
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| 217 | <td>Copyright © 2007
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| 218 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 219 | <td align=right><div align=right>Qt 3.3.8</div>
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| 220 | </table></div></address></body>
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| 221 | </html>
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