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Contents
Preface

Virtuoso Functions Guide

AMI APIs
Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Geo Spatial
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
Phrases
RDF data
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
VAD
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web & Internet
dav add & update fun...
dav lock manipulatio...
dav manipulation fun...
dav search functions
dav_exp
lfs_exp
serv_queue_top
urlrewrite_create_re...
user_key_load
vhost_define
vhost_remove
webdav users & group...
client_attr
connection_get
connection_id
connection_is_dirty
connection_set
connection_vars
connection_vars_set
dbname
dns_txt_get
ftp_get
ftp_ls
ftp_put
get_certificate_info
get_keyword
get_keyword_ucase
http
http_acl_get
http_acl_remove
http_acl_set
http_body_read
http_client
http_client_ext
http_client_ip
http_debug_log
http_enable_gz
http_file
http_flush
http_get
http_header
http_header_get
http_internal_redire...
http_kill
http_listen_host
http_lock
http_map_get
http_map_table
http_param
http_path
http_pending_req
http_physical_path
http_proxy
http_request_get
http_request_header
http_request_header_...
http_request_status
http_rewrite
http_root
http_unlock
http_url
http_value
http_xslt
json_parse
ses_connect
ses_disconnect
ses_read_line
ses_write
tcpip_gethostbyaddr
tcpip_gethostbyname
vsp_calculate_digest
wsdl_import_udt
XML
XPATH & XQUERY

Functions Index

http_header

Specifies non-default HTTP response headers
http_header (in head varchar);
Description

This function is used to add additional HTTP header lines to the server response. The http_header parameter MUST finish with <CR><LF> characters. Warning: Each call of this function cancels the effect of the previous call. In order to add to previously set header lines, use the http_header_get function to retrieve the current headers.

A Content-Type or Media-Type header specified as a part of the headers given with this function will override the default. Otherwise the header lines set using this function add to but do not replace the default response headers. Note that this function cannot set the status line. Use http_request_status for that.

Examples
Modifying the headers
<?vsp
http_header ('Content-type: text/plain\r\n');
-- the effect is browser will display content as text document
?>