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<td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">Q3HttpHeader Class Reference<br /><span class="small-subtitle">[<a href="qt3support.html">Qt3Support</a> module]</span>
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<p>The Q3HttpHeader class contains header information for HTTP. <a href="#details">More...</a></p>
<pre> #include <Q3HttpHeader></pre><p><b>This class is part of the Qt 3 support library.</b> It is provided to keep old source code working. We strongly advise against using it in new code. See <a href="porting4.html">Porting to Qt 4</a> for more information.</p>
<p><b>This class is not part of the Qt GUI Framework Edition.</b></p>
<p>Inherited by <a href="q3httprequestheader.html">Q3HttpRequestHeader</a> and <a href="q3httpresponseheader.html">Q3HttpResponseHeader</a>.</p>
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<li><a href="q3httpheader-members.html">List of all members, including inherited members</a></li>
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<a name="public-functions"></a>
<h2>Public Functions</h2>
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<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#Q3HttpHeader">Q3HttpHeader</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#Q3HttpHeader-2">Q3HttpHeader</a></b> ( const Q3HttpHeader & <i>header</i> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#Q3HttpHeader-3">Q3HttpHeader</a></b> ( const QString & <i>str</i> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#dtor.Q3HttpHeader">~Q3HttpHeader</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#contentLength">contentLength</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#contentType">contentType</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#hasContentLength">hasContentLength</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#hasContentType">hasContentType</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#hasKey">hasKey</a></b> ( const QString & <i>key</i> ) const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#isValid">isValid</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QStringList </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#keys">keys</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#majorVersion">majorVersion</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#minorVersion">minorVersion</a></b> () const = 0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#removeValue">removeValue</a></b> ( const QString & <i>key</i> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#setContentLength">setContentLength</a></b> ( int <i>len</i> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#setContentType">setContentType</a></b> ( const QString & <i>type</i> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#setValue">setValue</a></b> ( const QString & <i>key</i>, const QString & <i>value</i> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual QString </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#toString">toString</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#value">value</a></b> ( const QString & <i>key</i> ) const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">Q3HttpHeader & </td><td class="memItemRight" valign="bottom"><b><a href="q3httpheader.html#operator-eq">operator=</a></b> ( const Q3HttpHeader & <i>h</i> )</td></tr>
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<a name="details"></a>
<hr />
<h2>Detailed Description</h2>
<p>The Q3HttpHeader class contains header information for HTTP.</p>
<p>In most cases you should use the more specialized derivatives of this class, <a href="q3httpresponseheader.html">Q3HttpResponseHeader</a> and <a href="q3httprequestheader.html">Q3HttpRequestHeader</a>, rather than directly using Q3HttpHeader.</p>
<p>Q3HttpHeader 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:</p>
<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="q3httpheader.html#value">value</a>() and <a href="q3httpheader.html#setValue">setValue</a>(), e.g.</p>
<pre> header.setValue( "content-type", "text/html" );
QString 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="q3httpheader.html#value">value</a>() and <a href="q3httpheader.html#setValue">setValue</a>(), e.g. <a href="q3httpheader.html#contentLength">contentLength</a>() and <a href="q3httpheader.html#contentType">contentType</a>(), <a href="q3httpheader.html#setContentLength">setContentLength</a>() and <a href="q3httpheader.html#setContentType">setContentType</a>().</p>
<p>Each header key has a <i>single</i> 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="q3httprequestheader.html">Q3HttpRequestHeader</a> and <a href="q3httpresponseheader.html">Q3HttpResponseHeader</a>.</p>
<hr />
<h2>Member Function Documentation</h2>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/Q3HttpHeader"></a>
<h3 class="fn"><a name="Q3HttpHeader"></a>Q3HttpHeader::Q3HttpHeader ()</h3>
<p>Constructs an empty HTTP header.</p>
<h3 class="fn"><a name="Q3HttpHeader-2"></a>Q3HttpHeader::Q3HttpHeader ( const Q3HttpHeader & <i>header</i> )</h3>
<p>Constructs a copy of <i>header</i>.</p>
<h3 class="fn"><a name="Q3HttpHeader-3"></a>Q3HttpHeader::Q3HttpHeader ( const <a href="qstring.html">QString</a> & <i>str</i> )</h3>
<p>Constructs a HTTP header for <i>str</i>.</p>
<p>This constructor parses the string <i>str</i> for header fields and adds this information. The <i>str</i> should consist of one or more "\r\n" delimited lines; each of these lines should have the format key, colon, space, value.</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/~Q3HttpHeader"></a>
<h3 class="fn"><a name="dtor.Q3HttpHeader"></a>Q3HttpHeader::~Q3HttpHeader () <tt> [virtual]</tt></h3>
<p>Destructor.</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/contentLength"></a>
<h3 class="fn"><a name="contentLength"></a><a href="qtglobal.html#uint-typedef">uint</a> Q3HttpHeader::contentLength () const</h3>
<p>Returns the value of the special HTTP header field <tt>content-length</tt>.</p>
<p>See also <a href="q3httpheader.html#setContentLength">setContentLength</a>() and <a href="q3httpheader.html#hasContentLength">hasContentLength</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/contentType"></a>
<h3 class="fn"><a name="contentType"></a><a href="qstring.html">QString</a> Q3HttpHeader::contentType () const</h3>
<p>Returns the value of the special HTTP header field <tt>content-type</tt>.</p>
<p>See also <a href="q3httpheader.html#setContentType">setContentType</a>() and <a href="q3httpheader.html#hasContentType">hasContentType</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/hasContentLength"></a>
<h3 class="fn"><a name="hasContentLength"></a>bool Q3HttpHeader::hasContentLength () const</h3>
<p>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="q3httpheader.html#contentLength">contentLength</a>() and <a href="q3httpheader.html#setContentLength">setContentLength</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/hasContentType"></a>
<h3 class="fn"><a name="hasContentType"></a>bool Q3HttpHeader::hasContentType () const</h3>
<p>Returns true if the header has an entry for the special HTTP header field <tt>content-type</tt>; otherwise returns false.</p>
<p>See also <a href="q3httpheader.html#contentType">contentType</a>() and <a href="q3httpheader.html#setContentType">setContentType</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/hasKey"></a>
<h3 class="fn"><a name="hasKey"></a>bool Q3HttpHeader::hasKey ( const <a href="qstring.html">QString</a> & <i>key</i> ) const</h3>
<p>Returns true if the HTTP header has an entry with the given <i>key</i>; otherwise returns false.</p>
<p>See also <a href="q3httpheader.html#value">value</a>(), <a href="q3httpheader.html#setValue">setValue</a>(), and <a href="q3httpheader.html#keys">keys</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/isValid"></a>
<h3 class="fn"><a name="isValid"></a>bool Q3HttpHeader::isValid () const</h3>
<p>Returns true if the HTTP header is valid; otherwise returns false.</p>
<p>A <a href="q3httpheader.html" class="compat">Q3HttpHeader</a> is invalid if it was created by parsing a malformed string.</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/keys"></a>
<h3 class="fn"><a name="keys"></a><a href="qstringlist.html">QStringList</a> Q3HttpHeader::keys () const</h3>
<p>Returns a list of the keys in the HTTP header.</p>
<p>See also <a href="q3httpheader.html#hasKey">hasKey</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/majorVersion"></a>
<h3 class="fn"><a name="majorVersion"></a>int Q3HttpHeader::majorVersion () const <tt> [pure virtual]</tt></h3>
<p>Returns the major protocol-version of the HTTP header.</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/minorVersion"></a>
<h3 class="fn"><a name="minorVersion"></a>int Q3HttpHeader::minorVersion () const <tt> [pure virtual]</tt></h3>
<p>Returns the minor protocol-version of the HTTP header.</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/removeValue"></a>
<h3 class="fn"><a name="removeValue"></a>void Q3HttpHeader::removeValue ( const <a href="qstring.html">QString</a> & <i>key</i> )</h3>
<p>Removes the entry with the key <i>key</i> from the HTTP header.</p>
<p>See also <a href="q3httpheader.html#value">value</a>() and <a href="q3httpheader.html#setValue">setValue</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/setContentLength"></a>
<h3 class="fn"><a name="setContentLength"></a>void Q3HttpHeader::setContentLength ( int <i>len</i> )</h3>
<p>Sets the value of the special HTTP header field <tt>content-length</tt> to <i>len</i>.</p>
<p>See also <a href="q3httpheader.html#contentLength">contentLength</a>() and <a href="q3httpheader.html#hasContentLength">hasContentLength</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/setContentType"></a>
<h3 class="fn"><a name="setContentType"></a>void Q3HttpHeader::setContentType ( const <a href="qstring.html">QString</a> & <i>type</i> )</h3>
<p>Sets the value of the special HTTP header field <tt>content-type</tt> to <i>type</i>.</p>
<p>See also <a href="q3httpheader.html#contentType">contentType</a>() and <a href="q3httpheader.html#hasContentType">hasContentType</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/setValue"></a>
<h3 class="fn"><a name="setValue"></a>void Q3HttpHeader::setValue ( const <a href="qstring.html">QString</a> & <i>key</i>, const <a href="qstring.html">QString</a> & <i>value</i> )</h3>
<p>Sets the value of the entry with the <i>key</i> to <i>value</i>.</p>
<p>If no entry with <i>key</i> exists, a new entry with the given <i>key</i> and <i>value</i> is created. If an entry with the <i>key</i> already exists, its value is discarded and replaced with the given <i>value</i>.</p>
<p>See also <a href="q3httpheader.html#value">value</a>(), <a href="q3httpheader.html#hasKey">hasKey</a>(), and <a href="q3httpheader.html#removeValue">removeValue</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/toString"></a>
<h3 class="fn"><a name="toString"></a><a href="qstring.html">QString</a> Q3HttpHeader::toString () const <tt> [virtual]</tt></h3>
<p>Returns a string representation of the HTTP header.</p>
<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".</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/value"></a>
<h3 class="fn"><a name="value"></a><a href="qstring.html">QString</a> Q3HttpHeader::value ( const <a href="qstring.html">QString</a> & <i>key</i> ) const</h3>
<p>Returns the value for the entry with the given <i>key</i>. If no entry has this <i>key</i>, an empty string is returned.</p>
<p>See also <a href="q3httpheader.html#setValue">setValue</a>(), <a href="q3httpheader.html#removeValue">removeValue</a>(), <a href="q3httpheader.html#hasKey">hasKey</a>(), and <a href="q3httpheader.html#keys">keys</a>().</p>
<a name="//apple_ref/cpp/instm/Q3HttpHeader/operator="></a>
<h3 class="fn"><a name="operator-eq"></a>Q3HttpHeader & Q3HttpHeader::operator= ( const Q3HttpHeader & <i>h</i> )</h3>
<p>Assigns <i>h</i> and returns a reference to this http header.</p>
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