Pass parameters from the Web Service header?

I'm trying to make a web service call on AngularJS, however I'm getting the following error message in the browser console (I tested it in chrome and Firefox):

  

XMLHttpRequest can not load

     

No Access-Control-Allow-Origin header is present on the requested   resource. Origin ' link ' is therefore not allowed   access.

As far as I understand, soap complained that I did not send the request headers. Actually the service requires headers as below, however I do not know how to pass them in the parameter of the post call, I just sent the body parameters of the request.

Header Parameters: User and Store:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"

   <soapenv:Header>
      <v1:header>
         <usuario>?</usuario>
         <loja>?</loja>
      </v1:header>
   </soapenv:Header>
   <soapenv:Body>
      <v1:inImprimirFatura>
         <tipo-fatura>?</tipo-fatura>
         <numero-cpf>?</numero-cpf>
      </v1:inImprimirFatura>
   </soapenv:Body>
</soapenv:Envelope>

Service that makes the post call:

function GerarSegundaViaFaturaTotvsPDF()
{
	var metodo = 'imprimirFatura';
	var url = '
	var param = {};      	 
	param.tipoFatura = "ATUAL";
	param.CPF =
	return $soap.post(url, metodo, {req: param});	      	 
}

How do I step the header parameters in a simple way without changing the structure of my code?