Qore::Xml::XmlRpcClient Class Reference

The XmlRpcClient class provides easy access to XML-RPC web services. More...

#include <QC_XmlRpcClient.dox.h>

Public Member Methods
hash	call (string method,...)
	Calls a remote method taking all arguments after the method name for the method arguments and returns the response as qore data structure.
hash	callArgs (string method, any args)
	Calls a remote method using a single value after the method name for the method arguments and returns the response as a Qore data structure.
hash	callArgsWithInfo (reference info, string method, any args)
	Calls a remote method using a single value after the method name for the method arguments and returns the response as qore data structure, accepts a reference to a hash as the first argument to give technical information about the call.
hash	callWithInfo (reference info, string method,...)
	Calls a remote method taking all arguments after the method name for the method arguments and returns the response as qore data structure, accepts a reference to a hash as the first argument to give technical information about the call.
	constructor ()
	Creates the XmlRpcClient object with no parameters.
	constructor (hash opts, softbool no_connect=False)
	Creates the XmlRpcClient object based on the parameters passed.
	copy ()
	Throws an exception; copying XmlRpcClient objects is currently not supported.
nothing	setEventQueue ()
	clears the event queue for the XmlRpcClient object
nothing	setEventQueue (Queue queue)
	sets the event queue for the XmlRpcClient object

Detailed Description

The XmlRpcClient class provides easy access to XML-RPC web services.

This class inherits all public methods of the HTTPClient class. The inherited HTTPClient methods are not listed in this section, see the section on the HTTPClient class for more information on methods provided by the parent class. For a list of low-level XML-RPC functions, see XML-RPC.

The XmlRpcClient class understands the following protocols in addition to the protocols supported by the HTTPClient class:

XmlRpcClient Class Protocols

Protocol	Default Port	SSL?	Description
xmlrpc	80	No	Unencrypted XML-RPC protocol over HTTP
xmlrpcs	443	Yes	XML-RPC protocol over HTTP with SSL/TLS encryption

The XmlRpcClient supplies default values for HTTP headers as follows:

XmlRpcClient Default, but Overridable Headers

Header	Default Value
Accept	text/xml
Content-Type	text/xml
User-Agent	Qore-XML-RPC-Client/1.1
Connection	Keep-Alive

Note

• if no default_path is given in the constructor(), then "RPC2" is used
• This class is not available with the PO_NO_NETWORK parse option.

Member Function Documentation

call()

hash Qore::Xml::XmlRpcClient::call	(	string	method,
			...
	)

Calls a remote method taking all arguments after the method name for the method arguments and returns the response as qore data structure.

Parameters

method	The XML-RPC method name to call
...	the arguments to the call

Returns

a hash with one of the following keys:

• params: will be present if the call completed normally
• fault: will be present if the call is returning with error information; if this key is present then the value will be a hash with the following two keys:
  • faultCode: an integer fault code
  • faultString: a string error message

Exceptions

XMLRPC-SERIALIZATION-ERROR	empty member name in hash or cannot serialize type to XML-RPC (ex: object)
PARSE-XMLRPC-RESPONSE-ERROR	missing required element or other syntax error
PARSE-XMLRPC-ERROR	syntax error parsing XML-RPC string
HTTP-CLIENT-TIMEOUT	timeout on response from HTTP server
HTTP-CLIENT-RECEIVE-ERROR	error communicating with HTTP server

Note

other exceptions may be thrown related to communication errors (ex: SSL errors, etc)

Example:

hash result = xrc.call("method.name", arg1, arg2); 

callArgs()

hash Qore::Xml::XmlRpcClient::callArgs	(	string	method,
		any	args
	)

Calls a remote method using a single value after the method name for the method arguments and returns the response as a Qore data structure.

Parameters

method	The XML-RPC method name to call
args	An optional list of arguments (or single argument) for the method

Returns

a hash with one of the following keys:

• params: will be present if the call completed normally
• fault: will be present if the call is returning with error information; if this key is present then the value will be a hash with the following two keys:
  • faultCode: an integer fault code
  • faultString: a string error message

Exceptions

XMLRPC-SERIALIZATION-ERROR	empty member name in hash or cannot serialize type to XML-RPC (ex: object)
PARSE-XMLRPC-RESPONSE-ERROR	missing required element or other syntax error
PARSE-XMLRPC-ERROR	syntax error parsing XML-RPC string
HTTP-CLIENT-TIMEOUT	timeout on response from HTTP server
HTTP-CLIENT-RECEIVE-ERROR	error communicating with HTTP server

Note

other exceptions may be thrown related to communication errors (ex: SSL errors, etc)

Example:

hash result = xrc.callArgs("method.name", arg_list); 

callArgsWithInfo()

hash Qore::Xml::XmlRpcClient::callArgsWithInfo	(	reference	info,
		string	method,
		any	args
	)

Calls a remote method using a single value after the method name for the method arguments and returns the response as qore data structure, accepts a reference to a hash as the first argument to give technical information about the call.

Parameters

info	a reference to a hash that provides the following keys on output giving technical information about the HTTP call: request: the literal outgoing request body sent request-uri: the first line of the HTTP request headers: a hash of HTTP headers in the outgoing request response-uri: the first line of the HTTP response response: the literal response body received from the server response_headers: a hash of headers received in the response
method	The XML-RPC method name to call
args	An optional list of arguments (or single argument) for the method

Returns

a hash with one of the following keys:

• params: will be present if the call completed normally
• fault: will be present if the call is returning with error information; if this key is present then the value will be a hash with the following two keys:
  • faultCode: an integer fault code
  • faultString: a string error message

Exceptions

XMLRPC-SERIALIZATION-ERROR	empty member name in hash or cannot serialize type to XML-RPC (ex: object)
PARSE-XMLRPC-RESPONSE-ERROR	missing required element or other syntax error
PARSE-XMLRPC-ERROR	syntax error parsing XML-RPC string
HTTP-CLIENT-TIMEOUT	timeout on response from HTTP server
HTTP-CLIENT-RECEIVE-ERROR	error communicating with HTTP server

Note

other exceptions may be thrown related to communication errors (ex: SSL errors, etc)

Example:

hash info;
hash result = xrc.callArgsWithInfo(\info, "method.name", arg_list);

callWithInfo()

hash Qore::Xml::XmlRpcClient::callWithInfo	(	reference	info,
		string	method,
			...
	)

Calls a remote method taking all arguments after the method name for the method arguments and returns the response as qore data structure, accepts a reference to a hash as the first argument to give technical information about the call.

Parameters

info	a reference to a hash that provides the following keys on output giving technical information about the HTTP call: request: the literal outgoing request body sent request-uri: the first line of the HTTP request headers: a hash of HTTP headers in the outgoing request response-uri: the first line of the HTTP response response: the literal response body received from the server response_headers: a hash of headers received in the response
method	The XML-RPC method name to call
...	the arguments to the call

Returns

a hash with one of the following keys:

• params: will be present if the call completed normally
• fault: will be present if the call is returning with error information; if this key is present then the value will be a hash with the following two keys:
  • faultCode: an integer fault code
  • faultString: a string error message

Exceptions

XMLRPC-SERIALIZATION-ERROR	empty member name in hash or cannot serialize type to XML-RPC (ex: object)
PARSE-XMLRPC-RESPONSE-ERROR	missing required element or other syntax error
PARSE-XMLRPC-ERROR	syntax error parsing XML-RPC string
HTTP-CLIENT-TIMEOUT	timeout on response from HTTP server
HTTP-CLIENT-RECEIVE-ERROR	error communicating with HTTP server

Note

other exceptions may be thrown related to communication errors (ex: SSL errors, etc)

Example:

hash info;
hash result = xrc.callWithInfo(\info, "method.name", arg1, arg2);

constructor() [1/2]

Qore::Xml::XmlRpcClient::constructor

(

)

Creates the XmlRpcClient object with no parameters.

No connection is made because no connection parameters are set with this call; connection parameters must be set afterwards using the appropriate HTTPClient methods.

Example:

XmlRpcClient xrc();
xrc.setURL("http://localhost:8080");

constructor() [2/2]

Qore::Xml::XmlRpcClient::constructor	(	hash	opts,
		softbool	no_connect = False
	)

Creates the XmlRpcClient object based on the parameters passed.

By default the object will immediately attempt to establish a connection to the server

Parameters

opts

HTTPClient constructor options: url: A string giving the URL to connect to; if no default path is given here or in the default_path option, then "RPC2" is used default_port: The default port number to connect to if none is given in the URL. protocols: A hash describing new protocols, the key is the protocol name and the value is either an integer giving the default port number or a hash with 'port' and 'ssl' keys giving the default port number and a boolean value to indicate that an SSL connection should be established. http_version: Either '1.0' or '1.1' for the claimed HTTP protocol version compliancy in outgoing message headers. default_path: The default path to use for new connections if a path is not otherwise specified in the connection URL; if this option is not given and no path appears in the URL, then "RPC2" is used instead max_redirects: The maximum number of redirects before throwing an exception (the default is 5). proxy: The proxy URL for connecting through a proxy. timeout: The timeout value in milliseconds (also can be a relative date-time value for clarity, ex: 5m) connect_timeout: The timeout value in milliseconds for establishing a new socket connection (also can be a relative date-time value for clarity, ex: 30s)

no_connect

pass a boolean True value argument to suppress the automatic connection and establish a connection on demand with the first request

See also

HTTPClient::constructor() and HTTPClient::connect() for information on possible exceptions

Example:

XmlRpcClient xrc(("url": "http://authuser:authpass@otherhost:8080/XMLRPC"));

copy()

Qore::Xml::XmlRpcClient::copy

(

)

Throws an exception; copying XmlRpcClient objects is currently not supported.

Exceptions

XMLRPCCLIENT-COPY-ERROR

copying XmlRpcClient objects is currently not supported

setEventQueue() [1/2]

nothing Qore::Xml::XmlRpcClient::setEventQueue

(

)

clears the event queue for the XmlRpcClient object

Example:

xrc.setEventQueue(); 

setEventQueue() [2/2]

nothing Qore::Xml::XmlRpcClient::setEventQueue

(

Queue

queue

)

sets the event queue for the XmlRpcClient object

Parameters

queue

the Queue object to receive network events from the XmlRpcClient object

Example:

Queue queue();
xrc.setEventQueue(queue); 

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The documentation for this class was generated from the following file:

• QC_XmlRpcClient.dox.h