<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head profile="http://internetalchemy.org/2003/02/profile"> <link rel="foaf" type="application/rdf+xml" title="FOAF" href="http://www.openlinksw.com/dataspace/uda/about.rdf" /> <link rel="schema.dc" href="http://purl.org/dc/elements/1.1/" /> <meta name="dc.title" content="Function: http - Virtuoso Functions Guide" /> <meta name="dc.subject" content="Function: http - Virtuoso Functions Guide" /> <meta name="dc.creator" content="OpenLink Software Documentation Team ; " /> <meta name="dc.copyright" content="OpenLink Software, 1999 - 2009" /> <link rel="top" href="index.html" title="OpenLink Virtuoso Universal Server: Documentation" /> <link rel="search" href="/doc/adv_search.vspx" title="Search OpenLink Virtuoso Universal Server: Documentation" /> <link rel="parent" href="functions.html" title="Chapter Contents" /> <link rel="prev" href="appendixa.html" title="Appendix" /> <link rel="next" href="functions.html#.html" title="" /> <link rel="shortcut icon" href="../images/misc/favicon.ico" type="image/x-icon" /> <link rel="stylesheet" type="text/css" href="doc.css" /> <link rel="stylesheet" type="text/css" href="/doc/translation.css" /> <title>Function: http - Virtuoso Functions Guide</title> <meta http-equiv="Content-Type" content="text/xhtml; charset=UTF-8" /> <meta name="author" content="OpenLink Software Documentation Team ; " /> <meta name="copyright" content="OpenLink Software, 1999 - 2009" /> <meta name="keywords" content="" /> <meta name="GENERATOR" content="OpenLink XSLT Team" /> </head> <body> <div id="header"> <a name="fn_http" /> <img src="../images/misc/logo.jpg" alt="" /> <h1>22. Virtuoso Functions Guide - http</h1> </div> <div id="navbartop"> <div> <a class="link" href="functions.html">Chapter Contents</a> | <a class="link" href="fn_get_keyword_ucase.html" title="get_keyword_ucase">Prev</a> | <a class="link" href="fn_http_lock.html" title="http_lock">Next</a> </div> </div> <div id="currenttoc"> <form method="post" action="/doc/adv_search.vspx"> <div class="search">Keyword Search: <br /> <input type="text" name="q" /> <input type="submit" name="go" value="Go" /> </div> </form> <div> <a href="http://www.openlinksw.com/">www.openlinksw.com</a> </div> <div> <a href="http://docs.openlinksw.com/">docs.openlinksw.com</a> </div> <br /> <div> <a href="index.html">Book Home</a> </div> <br /> <div> <a href="contents.html">Contents</a> </div> <div> <a href="preface.html">Preface</a> </div> <br /> <div> <a class="selected" href="functions.html">Virtuoso Functions Guide</a> </div> <br /> <div> <a href="functions.html#admin">Administration</a> </div> <div> <a 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href="functions.html#ws">Web & Internet</a> </div> <div class="selected"> <div> <a href="fn_dav_api_add.html">dav add & update fun...</a> </div> <div> <a href="fn_dav_api_lock.html">dav lock manipulatio...</a> </div> <div> <a href="fn_dav_api_change.html">dav manipulation fun...</a> </div> <div> <a href="fn_dav_api_search.html">dav search functions</a> </div> <div> <a href="fn_dav_exp.html">dav_exp</a> </div> <div> <a href="fn_lfs_exp.html">lfs_exp</a> </div> <div> <a href="fn_serv_queue_top.html">serv_queue_top</a> </div> <div> <a href="fn_urlrewrite_create_regex_rule.html">urlrewrite_create_re...</a> </div> <div> <a href="fn_USER_KEY_LOAD.html">user_key_load</a> </div> <div> <a href="fn_vhost_define.html">vhost_define</a> </div> <div> <a href="fn_vhost_remove.html">vhost_remove</a> </div> <div> <a href="fn_dav_api_user.html">webdav users & group...</a> </div> <div> <a href="fn_client_attr.html">client_attr</a> </div> <div> <a href="fn_connection_get.html">connection_get</a> </div> <div> <a href="fn_connection_id.html">connection_id</a> </div> <div> <a href="fn_connection_is_dirty.html">connection_is_dirty</a> </div> <div> <a href="fn_connection_set.html">connection_set</a> </div> <div> <a href="fn_connection_vars.html">connection_vars</a> </div> <div> <a href="fn_connection_vars_set.html">connection_vars_set</a> </div> <div> <a href="fn_dbname.html">dbname</a> </div> <div> <a href="fn_ftp_get.html">ftp_get</a> </div> <div> <a href="fn_ftp_ls.html">ftp_ls</a> </div> <div> <a href="fn_ftp_put.html">ftp_put</a> </div> <div> <a href="fn_get_certificate_info.html">get_certificate_info</a> </div> <div> <a href="fn_get_keyword.html">get_keyword</a> </div> <div> <a href="fn_get_keyword_ucase.html">get_keyword_ucase</a> </div> <div> <a class="selected" href="fn_http.html">http</a> </div> <div> <a href="fn_http_acl_get.html">http_acl_get</a> </div> <div> <a href="fn_http_acl_remove.html">http_acl_remove</a> </div> <div> <a href="fn_http_acl_set.html">http_acl_set</a> </div> <div> <a href="fn_http_body_read.html">http_body_read</a> </div> <div> <a href="fn_http_client.html">http_client</a> </div> <div> <a href="fn_http_client_ext.html">http_client_ext</a> </div> <div> <a href="fn_http_client_ip.html">http_client_ip</a> </div> <div> <a href="fn_http_debug_log.html">http_debug_log</a> </div> <div> <a href="fn_http_enable_gz.html">http_enable_gz</a> </div> <div> <a href="fn_http_file.html">http_file</a> </div> <div> <a href="fn_http_flush.html">http_flush</a> </div> <div> <a href="fn_http_get.html">http_get</a> </div> <div> <a href="fn_http_header.html">http_header</a> </div> <div> <a href="fn_http_header_get.html">http_header_get</a> </div> <div> <a href="fn_http_kill.html">http_kill</a> </div> <div> <a href="fn_http_listen_host.html">http_listen_host</a> </div> <div> <a href="fn_http_lock.html">http_lock</a> </div> <div> <a href="fn_http_map_get.html">http_map_get</a> </div> <div> <a href="fn_http_map_table.html">http_map_table</a> </div> <div> <a href="fn_http_param.html">http_param</a> </div> <div> <a href="fn_http_path.html">http_path</a> </div> <div> <a href="fn_http_pending_req.html">http_pending_req</a> </div> <div> <a href="fn_http_physical_path.html">http_physical_path</a> </div> <div> <a href="fn_http_proxy.html">http_proxy</a> </div> <div> <a href="fn_http_request_get.html">http_request_get</a> </div> <div> <a href="fn_http_request_header.html">http_request_header</a> </div> <div> <a href="fn_http_request_status.html">http_request_status</a> </div> <div> <a href="fn_http_rewrite.html">http_rewrite</a> </div> <div> <a href="fn_http_root.html">http_root</a> </div> <div> <a href="fn_http_unlock.html">http_unlock</a> </div> <div> <a href="fn_http_url.html">http_url</a> </div> <div> <a href="fn_http_value.html">http_value</a> </div> <div> <a href="fn_http_xslt.html">http_xslt</a> </div> <div> <a href="fn_json_parse.html">json_parse</a> </div> <div> <a href="fn_ses_connect.html">ses_connect</a> </div> <div> <a href="fn_ses_disconnect.html">ses_disconnect</a> </div> <div> <a href="fn_ses_read_line.html">ses_read_line</a> </div> <div> <a href="fn_ses_write.html">ses_write</a> </div> <div> <a href="fn_tcpip_gethostbyaddr.html">tcpip_gethostbyaddr</a> </div> <div> <a href="fn_tcpip_gethostbyname.html">tcpip_gethostbyname</a> </div> <div> <a href="fn_vsp_calculate_digest.html">vsp_calculate_digest</a> </div> <div> <a href="fn_wsdl_import_udt.html">wsdl_import_udt</a> </div> </div> <div> <a href="functions.html#xml">XML</a> </div> <div> <a href="functions.html#XPATH">XPATH & XQUERY</a> </div> <br /> <div> <a href="functionidx.html">Functions Index</a> </div> <br /> </div> <div id="text"> <h2>http</h2> <div class="refpurpose">write to HTTP client or a string output stream</div> <div class="funcsynopsis"> <span class="funcdef"> <span class="function">http</span> </span> (<span class="paramdef">in <span class="parameter">val_expr</span> any</span>, <span class="paramdefoptional">[in <span class="optional">stream</span> any]</span>); </div> <div class="refsect1"> <div class="refsect1title">Description</div> <p> <span class="computeroutput">http</span> writes <span class="computeroutput">val_expr</span> to HTTP client or, if parameter <span class="computeroutput">stream</span> is given, to the given string output stream.</p> <p> <span class="computeroutput">val_expr</span> may be any scalar object, i.e. <span class="computeroutput">string</span>, <span class="computeroutput">date</span> or <span class="computeroutput">number</span> and will automatically be cast to <span class="computeroutput">varchar</span> before further processing. http will print out the string without escapes. <a href="fn_http_value.html">http_value</a> uses HTML escapes and <a href="fn_http_url.html">http_url</a> URL escapes.</p> </div> <div class="refsect1"> <div class="refsect1title">Parameters</div> <div class="refsect2"> <span class="refsect2title">val_expr – </span> A value expression. May be any scalar expression. </div> <div class="refsect2"> <span class="refsect2title">stream – </span> Optional parameter. If omitted or is 0 and the function is executed within a VSP context, the <span class="computeroutput">val_expr</span> will be written to the HTTP client. If present and non-zero, <span class="computeroutput">val_expr</span> will be written to the specified stream. If non-zero, the value must be a valid stream obtained from function <a href="fn_string_output.html">string_output </a> </div> </div> <div class="refsect1title">Errors</div> <table class="data"> <tr> <th class="data">SQLState</th> <th class="data">Error Code</th> <th class="data">Error Text</th> <th class="data">Description</th> </tr> <tr> <td class="data"> <a name="err22023" /> <span class="errorcode">22023</span> </td> <td class="data"> <a name="errHT007" /> <span class="errorcode">HT007</span> </td> <td class="data"> <span class="errorname">An interactive blob can't be passed as argument to http</span> </td> <td class="data" /> </tr> <tr> <td class="data"> <a name="err22023" /> <span class="errorcode">22023</span> </td> <td class="data"> <a name="errHT008" /> <span class="errorcode">HT008</span> </td> <td class="data"> <span class="errorname">http requires string, blob, or string session as argument 1</span> </td> <td class="data" /> </tr> <tr> <td class="data"> <a name="err37000" /> <span class="errorcode">37000</span> </td> <td class="data"> <a name="errHT006" /> <span class="errorcode">HT006</span> </td> <td class="data"> <span class="errorname">http output function outside of http context and no stream specified: %s.</span> </td> <td class="data" /> </tr> </table> <br /> <p /> <p /> <div class="refsect1"> <div class="refsect1title">Examples</div> <a name="ex_http" /> <div class="example"> <div class="exampletitle">HTTP output</div> <p>Output of various flavours of http. See <a href="fn_string_output.html">string_output </a> and <a href="fn_string_output_string.html">string_output_string </a> for examples how to use http to write to streams other than the HTTP output.</p> <div> <pre class="screen"> http (' % <b>') ' <b> http_value (' % <b>') % &lt;b&gt; http_url (' % <b>') +%25+<b> http_value (12, 'li') <li>12</li> </pre> </div> </div> </div> <div class="refsect1"> <div class="refsect1title">See Also</div> <p> <a href="fn_http_value.html">http_value</a>, <a href="fn_http_url.html">http_url</a>, <a href="fn_string_output.html">string_output</a>, <a href="fn_http_rewrite.html">http_rewrite</a>. </p> </div> </div> <div id="footer"> <div>Copyright© 1999 - 2009 OpenLink Software All rights reserved.</div> <div id="validation"> <a href="http://validator.w3.org/check/referer"> <img src="http://www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0!" height="31" width="88" /> </a> <a href="http://jigsaw.w3.org/css-validator/"> <img src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!" height="31" width="88" /> </a> </div> </div> </body> </html>