Что такое SOAP

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    <soap:Header>
        <!-- Необязательная часть. Аутентификация, транзакции, маршрутизация -->
    </soap:Header>
    <soap:Body>
        <!-- Обязательная часть. Основное сообщение -->
        <GetUser>
            <UserId>123</UserId>
        </GetUser>
    </soap:Body>
    <soap:Fault>
        <!-- Ошибки -->
    </soap:Fault>
</soap:Envelope>

POST /UserService HTTP/1.1
Host: api.example.com
Content-Type: text/xml; charset=utf-8
SOAPAction: "http://example.com/UserService/GetUser"

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope 
    xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:user="http://example.com/user">
    
    <soap:Header>
        <user:Auth>
            <user:ApiKey>abc123xyz</user:ApiKey>
        </user:Auth>
    </soap:Header>
    
    <soap:Body>
        <user:GetUserRequest>
            <user:UserId>123</user:UserId>
        </user:GetUserRequest>
    </soap:Body>
    
</soap:Envelope>

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope 
    xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
    xmlns:user="http://example.com/user">
    
    <soap:Body>
        <user:GetUserResponse>
            <user:UserId>123</user:UserId>
            <user:Name>Иван Петров</user:Name>
            <user:Email>ivan@example.com</user:Email>
            <user:CreatedAt>2024-01-15T10:30:00Z</user:CreatedAt>
        </user:GetUserResponse>
    </soap:Body>
    
</soap:Envelope>

<definitions targetNamespace="http://example.com/user">
    
    <!-- Типы данных -->
    <types>
        <xsd:schema>
            <xsd:element name="GetUserRequest">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element name="UserId" type="xsd:int"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
            
            <xsd:element name="GetUserResponse">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element name="UserId" type="xsd:int"/>
                        <xsd:element name="Name" type="xsd:string"/>
                        <xsd:element name="Email" type="xsd:string"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
        </xsd:schema>
    </types>
    
    <!-- Сообщения -->
    <message name="GetUserRequest">
        <part name="parameters" element="tns:GetUserRequest"/>
    </message>
    <message name="GetUserResponse">
        <part name="parameters" element="tns:GetUserResponse"/>
    </message>
    
    <!-- Операции -->
    <portType name="UserPort">
        <operation name="GetUser">
            <input message="tns:GetUserRequest"/>
            <output message="tns:GetUserResponse"/>
        </operation>
    </portType>
    
    <!-- Привязка к протоколу -->
    <binding name="UserBinding" type="tns:UserPort">
        <soap:binding transport="http://schemas.xmlsoap.org/soap/http"/>
        <operation name="GetUser">
            <soap:operation soapAction="http://example.com/UserService/GetUser"/>
            <input><soap:body use="literal"/></input>
            <output><soap:body use="literal"/></output>
        </operation>
    </binding>
    
    <!-- Адрес сервиса -->
    <service name="UserService">
        <port name="UserPort" binding="tns:UserBinding">
            <soap:address location="https://api.example.com/UserService"/>
        </port>
    </service>
    
</definitions>

<soap:Body>
    <GetUser>
        <UserId xsi:type="xsd:int">123</UserId>
    </GetUser>
</soap:Body>

<soap:Body>
    <GetUser>
        <UserId>123</UserId>
    </GetUser>
</soap:Body>

<soap:Body>
    <GetUserRequest>
        <UserId>123</UserId>
    </GetUserRequest>
</soap:Body>

<soap:Body>
    <GetUser>
        <UserId>123</UserId>
    </GetUser>
</soap:Body>

<soap:Header>
    <wsse:Security>
        <!-- Подпись сообщения -->
        <ds:Signature>
            <ds:SignedInfo>...</ds:SignedInfo>
            <ds:SignatureValue>...</ds:SignatureValue>
        </ds:Signature>
        
        <!-- Шифрование -->
        <xenc:EncryptedKey>...</xenc:EncryptedKey>
        
        <!-- Токен пользователя -->
        <wsse:UsernameToken>
            <wsse:Username>ivan</wsse:Username>
            <wsse:Password>***</wsse:Password>
        </wsse:UsernameToken>
    </wsse:Security>
</soap:Header>

<soap:Header>
    <wsat:AtomicTransaction>
        <wsat:TransactionID>uuid-123-456</wsat:TransactionID>
    </wsat:AtomicTransaction>
</soap:Header>

<soap:Header>
    <wsrm:Sequence>
        <wsrm:Identifier>uuid-123</wsrm:Identifier>
        <wsrm:MessageNumber>1</wsrm:MessageNumber>
    </wsrm:Sequence>
</soap:Header>

// Создание клиента из WSDL (Add Service Reference)
var client = new UserServiceClient();

// Вызов метода
var response = client.GetUser(new GetUserRequest { UserId = 123 });

Console.WriteLine($"User: {response.Name}, Email: {response.Email}");

// Генерация клиента из WSDL
URL url = new URL("https://api.example.com/UserService?wsdl");
QName qname = new QName("http://example.com/user", "UserService");
Service service = Service.create(url, qname);
UserPort port = service.getPort(UserPort.class);

// Вызов метода
GetUserResponse response = port.getUser(123);
System.out.println("User: " + response.getName());

from zeep import Client

client = Client('https://api.example.com/UserService?wsdl')
response = client.service.GetUser(UserId=123)

print(f"User: {response.Name}, Email: {response.Email}")