Simple webservice with node-soap - node.js

Question

I am trying to implement a simple web service using SOAP using Node Js and node-soap, but the client side seems to have problems using the server.
assert.js:92
throw new assert.AssertionError({
^
AssertionError: invalid message definition for document style binding
My wsdl file is:
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="wscalc1"
targetNamespace="http://localhost:8000/wscalc1"
xmlns="http://localhost:8000/wscalc1"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
<wsdl:message name="sumarRequest">
<wsdl:part name="a" type="xs:string"></wsdl:part>
<wsdl:part name="b" type="xs:string"></wsdl:part>
</wsdl:message>
<wsdl:message name="multiplicarRequest">
<wsdl:part name="a" type="xs:string"></wsdl:part>
<wsdl:part name="b" type="xs:string"></wsdl:part>
</wsdl:message>
<wsdl:message name="multiplicarResponse">
<wsdl:part name="res" type="xs:string"></wsdl:part>
</wsdl:message>
<wsdl:message name="sumarResponse">
<wsdl:part name="res" type="xs:string"></wsdl:part>
</wsdl:message>
<wsdl:portType name="calcP">
<wsdl:operation name="sumar">
<wsdl:input message="sumarRequest"></wsdl:input>
<wsdl:output message="sumarResponse"></wsdl:output>
</wsdl:operation>
<wsdl:operation name="multiplicar">
<wsdl:input message="multiplicarRequest"></wsdl:input>
<wsdl:output message="multiplicarResponse"></wsdl:output>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="calcB" type="calcP">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="sumar">
<soap:operation soapAction="sumar"/>
<wsdl:input>
<soap:body use="literal"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
</wsdl:input>
<wsdl:output>
<soap:body use="literal"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="multiplicar">
<soap:operation soapAction="multiplicar"/>
<wsdl:input>
<soap:body use="literal"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
</wsdl:input>
<wsdl:output>
<soap:body use="literal"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="ws">
<wsdl:port name="calc" binding="calcB">
<soap:address location="http://localhost:8000/wscalc1"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
server.js
var soap = require('soap');
var http = require('http');
var service = {
ws: {
calc: {
sumar : function(args) {
var n = args.a + args.b;
return { res : n };
},
multiplicar : function(args) {
var n = args.a * args.b;
return { res : n }
}
}
}
}
var xml = require('fs').readFileSync('wscalc1.wsdl', 'utf8'),
server = http.createServer(function(request,response) {
response.end("404: Not Found: "+request.url)
});
server.listen(8000);
soap.listen(server, '/wscalc1', service, xml);
client.js
var soap = require('soap');
var url = 'http://localhost:8000/wscalc1?wsdl';
soap.createClient(url, function(err, client) {
if (err) throw err;
console.log(client.describe().ws.calc);
client.multiplicar({"a":"1","b":"2"},function(err,res){
if (err) throw err;
console.log(res);
});
});
with that code the output is:
{ sumar:
{ input: { a1: 'Request', b1: 'Request' },
output: { res: 'Response' } },
multiplicar:
{ input: { a2: 'Request', b2: 'Request' },
output: { res: 'Response' } } }
assert.js:92
throw new assert.AssertionError({
^
AssertionError: invalid message definition for document style binding
any help will be really appreciated

Answer 1

As user672320 pointed out the reason client.js failed was because the format of the wsdl used was 'RPC/literal' but the style was set as 'document' rather than RPC.
In fact any one of five formats can be used for wsdl, each has a diferent format.
See Which style of WSDL should I use? for a discussion of which style to use.
Also, the example given is not complete.
See below for expanded version:
wsdl file:
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions name="wscalc1" targetNamespace="http://localhost:8000/wscalc1" xmlns="http://localhost:8000/wscalc1" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<wsdl:message name="sumarRequest">
<wsdl:part name="a" type="xs:string"/>
<wsdl:part name="b" type="xs:string"/>
</wsdl:message>
<wsdl:message name="multiplicarRequest">
<wsdl:part name="a" type="xs:string"/>
<wsdl:part name="b" type="xs:string"/>
</wsdl:message>
<wsdl:message name="multiplicarResponse">
<wsdl:part name="mulres" type="xs:string"/>
</wsdl:message>
<wsdl:message name="sumarResponse">
<wsdl:part name="sumres" type="xs:string"/>
</wsdl:message>
<wsdl:portType name="calcP">
<wsdl:operation name="sumar">
<wsdl:input message="sumarRequest"/>
<wsdl:output message="sumarResponse"/>
</wsdl:operation>
<wsdl:operation name="multiplicar">
<wsdl:input message="multiplicarRequest"/>
<wsdl:output message="multiplicarResponse"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="calcB" type="calcP">
<soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="sumar">
<soap:operation soapAction="sumar"/>
<wsdl:input>
<soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
</wsdl:input>
<wsdl:output>
<soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="multiplicar">
<soap:operation soapAction="multiplicar"/>
<wsdl:input>
<soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
</wsdl:input>
<wsdl:output>
<soap:body encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="ws">
<wsdl:port binding="calcB" name="calc">
<soap:address location="http://localhost:8001/wscalc1"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
server.js:
/*jslint node: true */
"use strict";
var soap = require('soap');
var http = require('http');
var service = {
ws: {
calc: {
sumar : function(args) {
var n = 1*args.a + 1*args.b;
return { sumres : n };
},
multiplicar : function(args) {
var n = args.a * args.b;
return { mulres : n };
}
}
}
};
var xml = require('fs').readFileSync('wscalc1.wsdl', 'utf8');
var server = http.createServer(function(request,response) {
response.end("404: Not Found: "+request.url);
});
server.listen(8001);
soap.listen(server, '/wscalc1', service, xml);
client.js:
var soap = require('soap');
var url = 'http://localhost:8001/wscalc1?wsdl';
soap.createClient(url, function(err, client) {
if (err) throw err;
console.log(client.describe().ws.calc);
client.multiplicar({a: 4,b: 3},function(err,res){
if (err) throw err;
console.log(res);
});
client.sumar({a: 4,b: 3},function(err,res){
if (err) throw err;
console.log(res);
});
});
with that the code output is:
{ sumar:
{ input: { a: 'xs:string', b: 'xs:string' },
output: { sumres: 'xs:string' } },
multiplicar:
{ input: { a: 'xs:string', b: 'xs:string' },
output: { mulres: 'xs:string' } } }
{ mulres: '12' }
{ sumres: '7' }

Answer 2

in the wsdl file what i change is the style from document to rpc trying to get antoher response using the client.js
What i receive is this output.
{ sumar:
{ input: { a: 'xs:string', b: 'xs:string' },
output: { res: 'xs:string' } },
multiplicar:
{ input: { a: 'xs:string', b: 'xs:string' },
output: { res: 'xs:string' } } }
{ res: '2' }