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# SOAP

<figure><img src="https://content.gitbook.com/content/lgZj92knauB1mNhclnfz/blobs/OI5iU7F5dxbXiHYBK6Vg/API-SOAP%202%20(1).png" alt=""><figcaption></figcaption></figure>

SOAP es un protocolo basado en XML utilizado para intercambio estructurado de información mediante servicios web.&#x20;

Es utilizado generalmente en:&#x20;

* Integraciones legacy &#x20;
* ERP corporativos &#x20;
* Sistemas empresariales antiguos &#x20;
* Integraciones bancarias o gubernamentales &#x20;

### Características SOAP&#x20;

| Característica | Descripción  |
| -------------- | ------------ |
| Protocolo      | SOAP/XML     |
| Formato        | XML          |
| Transporte     | HTTP/HTTPS   |
| Seguridad      | WS-Security  |
| Contrato       | WSDL         |
| Validación     | Estructurada |

### Componentes SOAP&#x20;

#### WSDL&#x20;

Archivo que define:&#x20;

* Métodos &#x20;
* Estructuras &#x20;
* Tipos de datos &#x20;
* Operaciones &#x20;

### SOAP Envelope&#x20;

Estructura principal XML utilizada para encapsular las peticiones.&#x20;

Ejemplo:&#x20;

\<soapenv:Envelope> \
&#x20;  \<soapenv:Header/> \
&#x20;  \<soapenv:Body> \
&#x20;  \</soapenv:Body> \
\</soapenv:Envelope>&#x20;

### Flujo SOAP&#x20;

ERP \
&#x20; ↓ \
SOAP Client \
&#x20; ↓ \
SOAP Service \
&#x20; ↓ \
Procesamiento XML \
&#x20; ↓ \
OSE/SUNAT&#x20;

### Ventajas SOAP&#x20;

* Alta estandarización &#x20;
* Contratos estrictos &#x20;
* Seguridad robusta &#x20;
* Compatible con sistemas enterprise &#x20;
* Validación XML avanzada &#x20;


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