Package 'xmlrpc2'

Title: Implementation of the Remote Procedure Call Protocol ('XML-RPC')
Description: The 'XML-RPC' is a remote procedure call protocol based on 'XML'. The 'xmlrpc2' package is inspired by the 'XMLRPC' package but uses the 'curl' and 'xml2' packages instead 'RCurl' and 'XML'.
Authors: Florian Schwendinger [aut, cre]
Maintainer: Florian Schwendinger <[email protected]>
License: GPL-3
Version: 1.2
Built: 2026-05-29 11:25:28 UTC
Source: https://github.com/florianschwendinger/xmlrpc2

Help Index

Convert from the XML-RPC Format into an R Object.

Description

Convert an object of class "xml_code" or a character in the XML-RPC Format into an R Object.

Usage

from_xmlrpc(xml, raise_error = TRUE)

Arguments

xml

a character string containing XML in the remote procedure call protocol format.
raise_error

a logical controling the behavior if the XML-RPC signals a fault. If TRUE an error is raised, if FALSE an object inheriting from "c("xmlrpc_error", "error")" is returned.

Value

an R object derived from the input.

Examples

params <- list(1L, 1:3, rnorm(3), LETTERS[1:3], charToRaw("A"))
xml <- to_xmlrpc("some_method", params)
from_xmlrpc(xml)

Convert R Objects into the XML-RPC Format

Description

Serialize R Objects so they can be passed to to_xmlrpc as parameters.

Usage

rpc_serialize(x, ...)

Arguments

x

an R object.
...

additional optional arguments (currently ignored).

Value

an object of class "xml_node".

Examples

rpc_serialize(1L)
rpc_serialize(1:2)
rpc_serialize(LETTERS[1:2])

Create a XML-RPC Call

Description

Constructs the XML body for an XML-RPC request. This function takes the target method name and a list of R objects as parameters. Each parameter in the list is converted into its corresponding XML-RPC representation using the 'rpc_serialize' method. The resulting XML structure follows the XML-RPC specification for a method call, encapsulating the method name and the serialized parameters. This function is typically used internally by the main 'xmlrpc' function to prepare the request before sending it to the server, but it can also be used directly to inspect the XML that would be generated.

Usage

to_xmlrpc(method, params)

Arguments

method

a character string giving the name of the method to be invoked.
params

a list containing the parmeters which are added to the XML file sent via the remote procedure call.

Value

an object of class "xml_node" containing a XML-RPC call.

Examples

params <- list(1L, 1:3, rnorm(3), LETTERS[1:3], charToRaw("A"))
cat(as.character(to_xmlrpc("some_method", params)))

Call the Remote Procedure

Description

Call a reomte procedure with the XML-RPC protocol.

Usage

xmlrpc(
  url,
  method,
  params = list(),
  handle = NULL,
  opts = list(),
  convert = TRUE,
  useragent = "xmlrpc",
  raise_error = TRUE
)

Arguments

url

a character string giving the url to the server.
method

a character string giving the name of the method to be invoked.
params

a list containing the parmeters which are added to the XML file sent via the remote procedure call.
handle

a object of class "curl_handle".
opts

a list of options passed to the function "handle_setopt".
convert

a logical, if convert is TRUE (default) the curl response is converted else it is left unchanged.
useragent

a character string giving the name of the "User-Agent".
raise_error

a logical controling the behavior if the status code of curl_fetch_memory signals an error. If raise_error is TRUE an error is raised, if raise_error is FALSE no error is raised and an object inheriting from c("fetch_error", error")} is returned. This object is the return value from \code{curl_fetch_memory} where just the class \code{c("fetch_error", error") is added.

Value

the reponse of curl or the response converted to R objects.

Examples

## Not run: 
url <- "https://www.neos-server.org"
xmlrpc(url, "listAllSolvers")
xmlrpc(url, "listSolversInCategory", params = list(category = "socp"))

## End(Not run)