# 22. Virtuoso Functions Guide - http_rewrite

Chapter Contents | Prev | Next
Keyword Search:
www.openlinksw.com
docs.openlinksw.com
Book Home
Contents
Preface
Virtuoso Functions Guide
Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web Server & Internet
dav add & update fun...
dav manipulation fun...
dav search functions
dav_exp
lfs_exp
serv_queue_top
vhost_define
vhost_remove
webdav users & group...
client_attr
connection_get
connection_id
connection_is_dirty
connection_set
connection_vars
connection_vars_set
dbname
ftp_get
ftp_ls
ftp_put
get_certificate_info
get_keyword
get_keyword_ucase
http
http_acl_get
http_body_read
http_client
http_client_ip
http_debug_log
http_enable_gz
http_file
http_flush
http_get
http_header
http_header_get
http_kill
http_listen_host
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_status
http_rewrite
http_root
http_url
http_value
http_xslt
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_rewrite

Clears output written to a string output or to an HTTP
http_rewrite ([in stream any]);
Parameters
stream – Optional stream to clear. Null or zero (0) implies the default HTTP client stream.
Description

This clears any previous output to the stream. If the stream is omitted or 0 the stream is the HTTP client stream of the calling procedure.

All output from VSP page procedures is buffered into a local string stream before being sent out. This is done so as to support the HTTP/1.1 required content length and to allow recovery from errors.

Using http_rewrite()

A VSP page excerpt.

    <p>Nope. You won't see this.</p>

    <?vsp
    http ('<p>This line will contribute to your local entropy.</p>');
    http_rewrite ();
    http ('<p>Now THIS is what you wanted to see, isn't it?</p>');
    ?>

See Also

http_value, http_url, string_output.