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<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>
<p>The QHttpHeader class contains header information for HTTP.
<a href="#details">More...</a>
<p><tt>#include <<a href="qhttp-h.html">qhttp.h</a>></tt>
<p>Inherited by <a href="qhttpresponseheader.html">QHttpResponseHeader</a> and <a href="qhttprequestheader.html">QHttpRequestHeader</a>.
<p><a href="qhttpheader-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QHttpHeader"><b>QHttpHeader</b></a> ()</li>
<li class=fn><a href="#QHttpHeader-2"><b>QHttpHeader</b></a> ( const QHttpHeader & header )</li>
<li class=fn><a href="#QHttpHeader-3"><b>QHttpHeader</b></a> ( const QString & str )</li>
<li class=fn>virtual <a href="#~QHttpHeader"><b>~QHttpHeader</b></a> ()</li>
<li class=fn>QHttpHeader & <a href="#operator-eq"><b>operator=</b></a> ( const QHttpHeader & h )</li>
<li class=fn>QString <a href="#value"><b>value</b></a> ( const QString & key ) const</li>
<li class=fn>void <a href="#setValue"><b>setValue</b></a> ( const QString & key, const QString & value )</li>
<li class=fn>void <a href="#removeValue"><b>removeValue</b></a> ( const QString & key )</li>
<li class=fn>QStringList <a href="#keys"><b>keys</b></a> () const</li>
<li class=fn>bool <a href="#hasKey"><b>hasKey</b></a> ( const QString & key ) const</li>
<li class=fn>bool <a href="#hasContentLength"><b>hasContentLength</b></a> () const</li>
<li class=fn>uint <a href="#contentLength"><b>contentLength</b></a> () const</li>
<li class=fn>void <a href="#setContentLength"><b>setContentLength</b></a> ( int len )</li>
<li class=fn>bool <a href="#hasContentType"><b>hasContentType</b></a> () const</li>
<li class=fn>QString <a href="#contentType"><b>contentType</b></a> () const</li>
<li class=fn>void <a href="#setContentType"><b>setContentType</b></a> ( const QString & type )</li>
<li class=fn>virtual QString <a href="#toString"><b>toString</b></a> () const</li>
<li class=fn>bool <a href="#isValid"><b>isValid</b></a> () const</li>
<li class=fn>virtual int <a href="#majorVersion"><b>majorVersion</b></a> () const = 0</li>
<li class=fn>virtual int <a href="#minorVersion"><b>minorVersion</b></a> () const = 0</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QHttpHeader class contains header information for HTTP.
<p>
<p> In most cases you should use the more specialized derivatives of
this class, <a href="qhttpresponseheader.html">QHttpResponseHeader</a> and <a href="qhttprequestheader.html">QHttpRequestHeader</a>, rather
than directly using QHttpHeader.
<p> QHttpHeader provides the HTTP header fields. A HTTP header field
consists of a name followed by a colon, a single space, and the
field value. (See RFC 1945.) Field names are case-insensitive. A
typical header field looks like this:
<pre>
content-type: text/html
</pre>
<p> In the API the header field name is called the "key" and the
content is called the "value". You can get and set a header
field's value by using its key with <a href="#value">value</a>() and <a href="#setValue">setValue</a>(), e.g.
<pre>
header.setValue( "content-type", "text/html" );
<a href="qstring.html">QString</a> contentType = header.value( "content-type" );
</pre>
<p> Some fields are so common that getters and setters are provided
for them as a convenient alternative to using <a href="#value">value</a>() and
<a href="#setValue">setValue</a>(), e.g. <a href="#contentLength">contentLength</a>() and <a href="#contentType">contentType</a>(),
<a href="#setContentLength">setContentLength</a>() and <a href="#setContentType">setContentType</a>().
<p> Each header key has a <em>single</em> value associated with it. If you
set the value for a key which already exists the previous value
will be discarded.
<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>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QHttpHeader"></a>QHttpHeader::QHttpHeader ()
</h3>
Constructs an empty HTTP header.
<h3 class=fn><a name="QHttpHeader-2"></a>QHttpHeader::QHttpHeader ( const <a href="qhttpheader.html">QHttpHeader</a> & header )
</h3>
Constructs a copy of <em>header</em>.
<h3 class=fn><a name="QHttpHeader-3"></a>QHttpHeader::QHttpHeader ( const <a href="qstring.html">QString</a> & str )
</h3>
Constructs a HTTP header for <em>str</em>.
<p> This constructor parses the string <em>str</em> for header fields and
adds this information. The <em>str</em> should consist of one or more
"\r\n" delimited lines; each of these lines should have the format
key, colon, space, value.
<h3 class=fn><a name="~QHttpHeader"></a>QHttpHeader::~QHttpHeader ()<tt> [virtual]</tt>
</h3>
Destructor.
<h3 class=fn>uint <a name="contentLength"></a>QHttpHeader::contentLength () const
</h3>
Returns the value of the special HTTP header field <tt>content-length</tt>.
<p> <p>See also <a href="#setContentLength">setContentLength</a>() and <a href="#hasContentLength">hasContentLength</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="contentType"></a>QHttpHeader::contentType () const
</h3>
Returns the value of the special HTTP header field <tt>content-type</tt>.
<p> <p>See also <a href="#setContentType">setContentType</a>() and <a href="#hasContentType">hasContentType</a>().
<h3 class=fn>bool <a name="hasContentLength"></a>QHttpHeader::hasContentLength () const
</h3>
Returns TRUE if the header has an entry for the special HTTP
header field <tt>content-length</tt>; otherwise returns FALSE.
<p> <p>See also <a href="#contentLength">contentLength</a>() and <a href="#setContentLength">setContentLength</a>().
<h3 class=fn>bool <a name="hasContentType"></a>QHttpHeader::hasContentType () const
</h3>
Returns TRUE if the header has an entry for the the special HTTP
header field <tt>content-type</tt>; otherwise returns FALSE.
<p> <p>See also <a href="#contentType">contentType</a>() and <a href="#setContentType">setContentType</a>().
<h3 class=fn>bool <a name="hasKey"></a>QHttpHeader::hasKey ( const <a href="qstring.html">QString</a> & key ) const
</h3>
Returns TRUE if the HTTP header has an entry with the given <em>key</em>; otherwise returns FALSE.
<p> <p>See also <a href="#value">value</a>(), <a href="#setValue">setValue</a>(), and <a href="#keys">keys</a>().
<h3 class=fn>bool <a name="isValid"></a>QHttpHeader::isValid () const
</h3>
Returns TRUE if the HTTP header is valid; otherwise returns FALSE.
<p> A QHttpHeader is invalid if it was created by parsing a malformed string.
<h3 class=fn><a href="qstringlist.html">QStringList</a> <a name="keys"></a>QHttpHeader::keys () const
</h3>
Returns a list of the keys in the HTTP header.
<p> <p>See also <a href="#hasKey">hasKey</a>().
<h3 class=fn>int <a name="majorVersion"></a>QHttpHeader::majorVersion () const<tt> [pure virtual]</tt>
</h3>
<p> Returns the major protocol-version of the HTTP header.
<p>Reimplemented in <a href="qhttpresponseheader.html#majorVersion">QHttpResponseHeader</a> and <a href="qhttprequestheader.html#majorVersion">QHttpRequestHeader</a>.
<h3 class=fn>int <a name="minorVersion"></a>QHttpHeader::minorVersion () const<tt> [pure virtual]</tt>
</h3>
<p> Returns the minor protocol-version of the HTTP header.
<p>Reimplemented in <a href="qhttpresponseheader.html#minorVersion">QHttpResponseHeader</a> and <a href="qhttprequestheader.html#minorVersion">QHttpRequestHeader</a>.
<h3 class=fn><a href="qhttpheader.html">QHttpHeader</a> & <a name="operator-eq"></a>QHttpHeader::operator= ( const <a href="qhttpheader.html">QHttpHeader</a> & h )
</h3>
Assigns <em>h</em> and returns a reference to this http header.
<h3 class=fn>void <a name="removeValue"></a>QHttpHeader::removeValue ( const <a href="qstring.html">QString</a> & key )
</h3>
Removes the entry with the key <em>key</em> from the HTTP header.
<p> <p>See also <a href="#value">value</a>() and <a href="#setValue">setValue</a>().
<h3 class=fn>void <a name="setContentLength"></a>QHttpHeader::setContentLength ( int len )
</h3>
Sets the value of the special HTTP header field <tt>content-length</tt>
to <em>len</em>.
<p> <p>See also <a href="#contentLength">contentLength</a>() and <a href="#hasContentLength">hasContentLength</a>().
<h3 class=fn>void <a name="setContentType"></a>QHttpHeader::setContentType ( const <a href="qstring.html">QString</a> & type )
</h3>
Sets the value of the special HTTP header field <tt>content-type</tt> to
<em>type</em>.
<p> <p>See also <a href="#contentType">contentType</a>() and <a href="#hasContentType">hasContentType</a>().
<p>Example: <a href="archivesearch-example.html#x475">network/archivesearch/archivedialog.ui.h</a>.
<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 )
</h3>
Sets the value of the entry with the <em>key</em> to <em>value</em>.
<p> If no entry with <em>key</em> exists, a new entry with the given <em>key</em>
and <em>value</em> is created. If an entry with the <em>key</em> already
exists, its value is discarded and replaced with the given <em>value</em>.
<p> <p>See also <a href="#value">value</a>(), <a href="#hasKey">hasKey</a>(), and <a href="#removeValue">removeValue</a>().
<p>Example: <a href="archivesearch-example.html#x476">network/archivesearch/archivedialog.ui.h</a>.
<h3 class=fn><a href="qstring.html">QString</a> <a name="toString"></a>QHttpHeader::toString () const<tt> [virtual]</tt>
</h3>
Returns a string representation of the HTTP header.
<p> The string is suitable for use by the constructor that takes a
<a href="qstring.html">QString</a>. It consists of lines with the format: key, colon, space,
value, "\r\n".
<h3 class=fn><a href="qstring.html">QString</a> <a name="value"></a>QHttpHeader::value ( const <a href="qstring.html">QString</a> & key ) const
</h3>
Returns the value for the entry with the given <em>key</em>. If no entry
has this <em>key</em>, an empty string is returned.
<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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