# 22. Virtuoso Functions Guide - http_client

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## http_client

returns a varchar containing the body of the request uri
varchar http_client (in url varchar, [in uid varchar], [in pwd varchar], [in http_method varchar], [in http_headers varchar], [in body varchar], [in cert_file varchar], [in cert_pwd varchar]);
Parameters
url – target URL (http: or https: are supported)
uid – user name
pwd – user password
http_method – 'GET', 'POST', 'HEAD' or 'PUT'
http_headers – a string containing a HTTP headers supplied by application
body – content to be sent
cert_file – cpath to the certificate file where is stored x509 certificate, private key and CA certificates
cert_pwd – password for oppening the certificate file.
Description

This function is used to perform HTTP operations to retrieve generic content and/or to perform generic operations over HTTP/HTTPS protocols. It also supports HTTP authentication based on username/password credentials.

If the URL is https: an no x509 certificate given then it will opearate as https client w/o client certificate.