cgiRequest: Create a CGI Request Object

In MazamaWebUtils: Utility Functions for Building Web Databrowsers

Description

A request object is created from the appropriate environment variables and is returned as a list. List elements include:

• params – list of request parameters

• headers – list of HTTP headers

• method – "GET"

• raw – NULL

• content_type – NULL

• protocol – "http"

• body – NULL

Usage

cgiRequest(testParams = NULL)

Arguments

testParams

URL request parameters for testing GET requests

Details

Even in the modern era (>= 2017) it is still sometimes useful to build simple web services using CGI scripts. Benefits include: ease of coding; use of standard port 80; service uptime: even if the CGI script dies while handling an earlier request, the script will be restarted for the next request.

Using this function, the body of an R CGI script can begin with:

req <- cgiRequest()
headers <- req$params
params <- req$params
...

Value

A list containing CGI request elements

Note

The returned object mimics the request object created in the jug package.

References

https://github.com/Bart6114/jug/blob/master/R/request.R

Examples

# Example borrowed from webutils::parse_query
q <- "foo=1%2B1%3D2&bar=yin%26yang"
req <- cgiRequest(q)
str(req$params)

MazamaWebUtils documentation built on May 2, 2019, 2:41 a.m.