xmlrpc

by kolo

kolo / xmlrpc

Implementation of XMLRPC protocol in Go language.

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Overview

xmlrpc is an implementation of client side part of XMLRPC protocol in Go language.

Status

This project is in minimal maintenance mode with no further development. Bug fixes are accepted, but it might take some time until they will be merged.

Installation

To install xmlrpc package run

go get github.com/kolo/xmlrpc
. To use it in application add
"github.com/kolo/xmlrpc"
string to
import
statement.

Usage

client, _ := xmlrpc.NewClient("https://bugzilla.mozilla.org/xmlrpc.cgi", nil)
result := struct{
  Version string `xmlrpc:"version"`
}{}
client.Call("Bugzilla.version", nil, &result)
fmt.Printf("Version: %s\n", result.Version) // Version: 4.2.7+

Second argument of NewClient function is an object that implements http.RoundTripper interface, it can be used to get more control over connection options. By default it initialized by http.DefaultTransport object.

Arguments encoding

xmlrpc package supports encoding of native Go data types to method arguments.

Data types encoding rules:

  • int, int8, int16, int32, int64 encoded to int;
  • float32, float64 encoded to double;
  • bool encoded to boolean;
  • string encoded to string;
  • time.Time encoded to datetime.iso8601;
  • xmlrpc.Base64 encoded to base64;
  • slice encoded to array;

Structs encoded to struct by following rules:

  • all public field become struct members;
  • field name become member name;
  • if field has xmlrpc tag, its value become member name.
  • for fields tagged with
    ",omitempty"
    , empty values are omitted;

Server method can accept few arguments, to handle this case there is special approach to handle slice of empty interfaces (

[]interface{}
). Each value of such slice encoded as separate argument.

Result decoding

Result of remote function is decoded to native Go data type.

Data types decoding rules:

  • int, i4 decoded to int, int8, int16, int32, int64;
  • double decoded to float32, float64;
  • boolean decoded to bool;
  • string decoded to string;
  • array decoded to slice;
  • structs decoded following the rules described in previous section;
  • datetime.iso8601 decoded as time.Time data type;
  • base64 decoded to string.

Implementation details

xmlrpc package contains clientCodec type, that implements rpc.ClientCodec interface of net/rpc package.

xmlrpc package works over HTTP protocol, but some internal functions and data type were made public to make it easier to create another implementation of xmlrpc that works over another protocol. To encode request body there is EncodeMethodCall function. To decode server response Response data type can be used.

Contribution

See project status.

Authors

Dmitry Maksimov ([email protected])

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