Ethernet Configuration and Control, cont'd - Extron Electronics

PRELIMINARY
Ethernet Configuration and Control, cont’d
4-26
Query strings
A query string is the portion of a URL that appears after the question mark. The
query string contains parameters or instructions for the Web server to execute. The
basic format for a query string within a link is:
Receptacle 1
where x is the SIS command to be executed.
When a link is accessed on a Web page, the URL is passed to the Web server to tell
it which Web page to return to the browser. The portion of the URL after the
question mark is the query string, which contains the SIS command that the
IPL T PC1 will remove and execute.
Like SSI formatted commands, query strings can use any valid SIS command.
The query string in the figure below turns off DHCP on the IP Link device.
HTML Code
for a Link
Receptacle on
Linked Text
Example of a URL with a query string using an SIS command
Closes
link.
*Enter with no spaces.
Code example
The following figure shows a practical use for both SSIs and query strings. In this
example, the HTML source code contains three SSI commands.
Example 1
HTML Example #1
The following lines demonstrate how to read status from the IPLink Product:
IPLink Product Name:
IPLink Product Description:
IPLink Product Part Number:
SSI
commands
Web page HTML source code document showing SSIs
The SSI commands in the figure above request the product name, product
description and product part number of an IP Link device.