UnTypedServiceExample

Artículo
06/13/2023

En este ejemplo se muestra cómo implementar un servicio sin tipo con Service Model. En este caso, el modelo de servicio proporciona la infraestructura de placa reutilizable.

UnTypedService.cpp
PurchaseOrder.wsdl
Archivo Make

UnTypedService.cpp


//------------------------------------------------------------
// Copyright (C) Microsoft.  All rights reserved.
//------------------------------------------------------------

#ifndef UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <stdio.h>
#include "WebServices.h"
#include "process.h"
#include "string.h"
#include "PurchaseOrder.wsdl.h"

// Print out rich error info
void PrintError(HRESULT errorCode, WS_ERROR* error)
{
    wprintf(L"Failure: errorCode=0x%lx\n", errorCode);

    if (errorCode == E_INVALIDARG || errorCode == WS_E_INVALID_OPERATION)
    {
        // Correct use of the APIs should never generate these errors
        wprintf(L"The error was due to an invalid use of an API.  This is likely due to a bug in the program.\n");
        DebugBreak();
    }

    HRESULT hr = NOERROR;
    if (error != NULL)
    {
        ULONG errorCount;
        hr = WsGetErrorProperty(error, WS_ERROR_PROPERTY_STRING_COUNT, &errorCount, sizeof(errorCount));
        if (FAILED(hr))
        {
            goto Exit;
        }
        for (ULONG i = 0; i < errorCount; i++)
        {
            WS_STRING string;
            hr = WsGetErrorString(error, i, &string);
            if (FAILED(hr))
            {
                goto Exit;
            }
            wprintf(L"%.*s\n", string.length, string.chars);
        }
    }
Exit:
    if (FAILED(hr))
    {
        wprintf(L"Could not get error string (errorCode=0x%lx)\n", hr);
    }
}

HANDLE closeServer = NULL;  

volatile long numberOfItems = 0;

HRESULT CALLBACK ProcessMessage(
    __in const WS_OPERATION_CONTEXT* context, 
    __in_opt const WS_ASYNC_CONTEXT* asyncContext, 
    __in_opt WS_ERROR* error)
{
    UNREFERENCED_PARAMETER(asyncContext);

    WS_CHANNEL* channel = NULL;
    HRESULT hr = NOERROR;
    WS_HEAP* heap = NULL;
    WS_MESSAGE* replyMessage = NULL;

    hr = WsGetOperationContextProperty(
        context, 
        WS_OPERATION_CONTEXT_PROPERTY_HEAP, 
        &heap, 
        sizeof(heap), 
        error);
if (FAILED(hr))
{
    goto Exit;
}
    
    WS_MESSAGE* requestMessage = NULL;
    hr = WsGetOperationContextProperty(
        context, 
        WS_OPERATION_CONTEXT_PROPERTY_INPUT_MESSAGE, 
        &requestMessage, 
        sizeof(requestMessage), 
        error);
if (FAILED(hr))
{
    goto Exit;
}
    
    hr = WsGetOperationContextProperty(
    context, 
    WS_OPERATION_CONTEXT_PROPERTY_CHANNEL, 
    &channel, 
    sizeof(channel), 
    error);
if (FAILED(hr))
{
    goto Exit;
}
    
hr = WsCreateMessageForChannel(
    channel,
    NULL, 
    0, 
    &replyMessage, 
    error);
if (FAILED(hr))
{
    goto Exit;
}
    
    // Get action value
    WS_XML_STRING receivedAction;
    hr = WsGetHeader(
        requestMessage, 
        WS_ACTION_HEADER, 
        WS_XML_STRING_TYPE,
        WS_READ_REQUIRED_VALUE, 
        NULL, 
        &receivedAction, 
        sizeof(receivedAction), 
        error);
if (FAILED(hr))
{
    goto Exit;
}

    // Make sure action is what we expect
    if (WsXmlStringEquals(
        &receivedAction, 
        PurchaseOrder_wsdl.messages.PurchaseOrder.action, 
        error) != S_OK)
    {
        hr = WS_E_ENDPOINT_ACTION_NOT_SUPPORTED;
        goto Exit;
    }

    // Read purchase order
    _PurchaseOrderType purchaseOrder;
    hr = WsReadBody(
        requestMessage, 
        &PurchaseOrder_wsdl.globalElements.PurchaseOrderType, 
        WS_READ_REQUIRED_VALUE, 
        heap, &purchaseOrder, 
        sizeof(purchaseOrder), 
        error);
if (FAILED(hr))
{
    goto Exit;
}
    
    // Read end of message
    hr = WsReadMessageEnd(
        channel, 
        requestMessage, 
        NULL, 
        error);
if (FAILED(hr))
{
    goto Exit;
}
    
    // Print out purchase order contents
    wprintf(L"%ld, %.*s\n", 
        purchaseOrder.quantity, 
        purchaseOrder.productName.length,
        purchaseOrder.productName.chars);
    
    // Initialize order confirmation data
    _OrderConfirmationType orderConfirmation;
    orderConfirmation.expectedShipDate.chars = L"1/1/2006";
    orderConfirmation.expectedShipDate.length = 8;
    orderConfirmation.orderID = 123;

    // Send a reply message
    hr = WsSendReplyMessage(
        channel, 
        replyMessage, 
        &PurchaseOrder_wsdl.messages.OrderConfirmation, 
        WS_WRITE_REQUIRED_VALUE,
        &orderConfirmation, 
        sizeof(orderConfirmation),
        requestMessage, 
        NULL, 
        error);
if (FAILED(hr))
{
    goto Exit;
}
    
    hr = WS_S_END;
    
Exit:
    fflush(stdout);
    if (replyMessage != NULL)
    {
        WsFreeMessage(
            replyMessage);
    }
    return hr;    
}

HRESULT CALLBACK CloseChannelCallback(
    __in const WS_OPERATION_CONTEXT* context, 
    __in_opt const WS_ASYNC_CONTEXT* asyncContext)
{
    UNREFERENCED_PARAMETER(context);
    UNREFERENCED_PARAMETER(asyncContext);

    const ULONG totalItems = InterlockedIncrement(
        &numberOfItems);
    if (totalItems == 100)
    {
        SetEvent(closeServer);
    }
    return NOERROR;
}


static const WS_SERVICE_CONTRACT messageContract = { NULL, ProcessMessage, NULL};

// Main entry point
int __cdecl wmain(int argc, __in_ecount(argc) wchar_t **argv)
{
    UNREFERENCED_PARAMETER(argc);
    UNREFERENCED_PARAMETER(argv);
    
    HRESULT hr = NOERROR;
    WS_SERVICE_HOST* host = NULL;
    WS_SERVICE_ENDPOINT serviceEndpoint = {};
    const WS_SERVICE_ENDPOINT* serviceEndpoints[1];
    serviceEndpoints[0] = &serviceEndpoint;
    WS_ERROR* error = NULL;
    WS_SERVICE_ENDPOINT_PROPERTY serviceEndpointProperties[1];
    WS_SERVICE_PROPERTY_CLOSE_CALLBACK closeCallbackProperty = {CloseChannelCallback};
    serviceEndpointProperties[0].id = WS_SERVICE_ENDPOINT_PROPERTY_CLOSE_CHANNEL_CALLBACK;
    serviceEndpointProperties[0].value = &closeCallbackProperty;
    serviceEndpointProperties[0].valueSize = sizeof(closeCallbackProperty);
    
    // Create Event object for closing the server
    closeServer = CreateEvent(
        NULL, 
        TRUE, 
        FALSE, 
        NULL);
    if (closeServer == NULL)
    {
        hr = HRESULT_FROM_WIN32(GetLastError());
        goto Exit;
    }   
    
    // Initialize service endpoint
    serviceEndpoint.address.url.chars = L"http://+:80/example"; // address given as uri
    serviceEndpoint.address.url.length = (ULONG)wcslen(serviceEndpoint.address.url.chars);
    serviceEndpoint.channelBinding = WS_HTTP_CHANNEL_BINDING; // channel binding for the endpoint
    serviceEndpoint.channelType = WS_CHANNEL_TYPE_REPLY; // the channel type
    serviceEndpoint.contract = &messageContract;  // the contract
    serviceEndpoint.properties = serviceEndpointProperties;
    serviceEndpoint.propertyCount = WsCountOf(serviceEndpointProperties);
    // Create an error object for storing rich error information
    hr = WsCreateError(
        NULL, 
        0, 
        &error);
    if (FAILED(hr))
    {
        goto Exit;
    }
    // Creating a service host
    hr = WsCreateServiceHost(
        serviceEndpoints, 
        1, 
        NULL, 
        0, 
        &host, 
        error);
    if (FAILED(hr))
    {
        goto Exit;
    }
    // WsOpenServiceHost to start the listeners in the service host 
    hr = WsOpenServiceHost(
            host, 
            NULL, 
            error);
    if (FAILED(hr))
    {
        goto Exit;
    }
    WaitForSingleObject(closeServer, INFINITE);
    // Close the service host
    hr = WsCloseServiceHost(host, NULL, error);
    if (FAILED(hr))
    {
        goto Exit;
    }
    
Exit:
    if (FAILED(hr))
    {
        // Print out the error
        PrintError(hr, error);
    }
    fflush(
        stdout);
    if (host != NULL)
    {
        WsFreeServiceHost(host);
    }
    
    
    if (error != NULL)
    {
        WsFreeError(error);
    }
    if (closeServer != NULL)
    {
        CloseHandle(closeServer);
    }
    fflush(stdout);
    return SUCCEEDED(hr) ? 0 : -1;
}

PurchaseOrder.wsdl

<wsdl:definitions 
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" 
    xmlns:tns="http://example.org" 
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
    xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" 
    xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" 
    xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" 
    targetNamespace="http://example.org">
    <wsdl:types>
        <xsd:schema targetNamespace="http://example.org" elementFormDefault="qualified">
            <xsd:element name="PurchaseOrderType">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element minOccurs="0" name="quantity" type="xsd:int"/>
                        <xsd:element minOccurs="0" name="productName" type="xsd:string"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
            <xsd:element name="OrderConfirmationType">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element minOccurs="0" name="orderID" type="xsd:unsignedInt"/>
                        <xsd:element minOccurs="0" name="expectedShipDate" type="xsd:string"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
            <xsd:element name="GetOrderStatusType">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element minOccurs="0" name="orderID" type="xsd:unsignedInt"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
            <xsd:element name="GetOrderStatusResponseType">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element minOccurs="0" name="orderID" type="xsd:unsignedInt"/>
                        <xsd:element minOccurs="0" name="status" type="xsd:string"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
            <xsd:element name="OrderNotFoundFaultType">
                <xsd:complexType>
                    <xsd:sequence>
                        <xsd:element minOccurs="0" name="orderID" type="xsd:unsignedInt"/>
                    </xsd:sequence>
                </xsd:complexType>
            </xsd:element>
        </xsd:schema>
    </wsdl:types>
    <wsdl:message name="PurchaseOrder">
        <wsdl:part name="parameters" element="tns:PurchaseOrderType"/>
    </wsdl:message>
    <wsdl:message name="OrderConfirmation">
        <wsdl:part name="parameters" element="tns:OrderConfirmationType"/>
    </wsdl:message>
    <wsdl:message name="GetOrderStatus">
        <wsdl:part name="parameters" element="tns:GetOrderStatusType"/>
    </wsdl:message>
    <wsdl:message name="GetOrderStatusResponse">
        <wsdl:part name="parameters" element="tns:GetOrderStatusResponseType"/>
    </wsdl:message>
    <wsdl:message name="OrderNotFoundFault">
        <wsdl:part name="parameters" element="tns:OrderNotFoundFaultType"/>
    </wsdl:message>
    <wsdl:portType name="IPurchaseOrder">
        <wsdl:operation name="Order">
            <wsdl:input message="tns:PurchaseOrder" wsaw:Action="http://example.org/purchaseorder"/>
            <wsdl:output message="tns:OrderConfirmation" wsaw:Action="http://example.org/orderconfirmation"/>
        </wsdl:operation>
        <wsdl:operation name="OrderStatus">
            <wsdl:input message="tns:GetOrderStatus" wsaw:Action="http://example.org/getorderstatus"/>
            <wsdl:output message="tns:GetOrderStatusResponse" wsaw:Action="http://example.org/getorderstatusresponse"/>
            <wsdl:fault name="OrderNotFound" message="tns:OrderNotFoundFault" wsaw:Action="http://example.org/ordernotfound"/>
        </wsdl:operation>
    </wsdl:portType>
    <wsdl:binding name="PurchaseOrderBinding" type="tns:IPurchaseOrder">
        <soap:binding transport="http://schemas.xmlsoap.org/soap/http"/>
        <wsdl:operation name="Order">
            <soap:operation soapAction="http://example.org/purchaseorder" style="document"/>
            <wsdl:input>
                <soap:body use="literal"/>
            </wsdl:input>
            <wsdl:output>
                <soap:body use="literal"/>
            </wsdl:output>
        </wsdl:operation>
        <wsdl:operation name="OrderStatus">
            <soap:operation soapAction="http://example.org/getorderstatus" style="document"/>
            <wsdl:input>
                <soap:body use="literal"/>
            </wsdl:input>
            <wsdl:output>
                <soap:body use="literal"/>
            </wsdl:output>
            <wsdl:fault name="OrderNotFound">
                <soap:body use="literal"/>
            </wsdl:fault>
        </wsdl:operation>
    </wsdl:binding>
    <wsdl:service name="PurchaseOrderService">
        <wsdl:port name="IPurchaseOrder" binding="tns:PurchaseOrderBinding">
            <soap:address location="http://example.org/IPurchaseOrder"/>
        </wsdl:port>
    </wsdl:service>
</wsdl:definitions>

Archivo Make

#------------------------------------------------------------
# Copyright (C) Microsoft.  All rights reserved.
#------------------------------------------------------------

!include <Win32.Mak>

EXTRA_LIBS = WebServices.lib rpcrt4.lib Iphlpapi.lib

all: $(OUTDIR) $(OUTDIR)\WsUnTypedService.exe

"$(OUTDIR)" :
    if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
    
$(OUTDIR)\PurchaseOrder.wsdl.c: PurchaseOrder.wsdl
     Wsutil.exe /wsdl:PurchaseOrder.wsdl /string:WS_STRING /out:$(OUTDIR)
    

$(OUTDIR)\PurchaseOrder.wsdl.obj: $(OUTDIR)\PurchaseOrder.wsdl.c
    $(cc) $(cdebug) $(cflags) $(cvarsmt) /WX -I$(OUTDIR) /Fo"$(OUTDIR)\\" /Fd"$(OUTDIR)\\" $(OUTDIR)\PurchaseOrder.wsdl.c

$(OUTDIR)\UnTypedService.obj: UnTypedService.cpp $(OUTDIR)\PurchaseOrder.wsdl.c
    $(cc) $(cdebug) $(cflags) $(cvarsmt) /WX -I$(OUTDIR) /Fo"$(OUTDIR)\\" /Fd"$(OUTDIR)\\" UnTypedService.cpp

$(OUTDIR)\WsUnTypedService.exe: $(OUTDIR)\UnTypedService.obj $(OUTDIR)\PurchaseOrder.wsdl.obj
    $(link) $(ldebug) $(conlflags) $(conlibsmt) $(EXTRA_LIBS) -out:$(OUTDIR)\WsUnTypedService.exe $(OUTDIR)\UnTypedService.obj $(OUTDIR)\PurchaseOrder.wsdl.obj /PDB:$(OUTDIR)\WsUnTypedService.PDB

clean:
    $(CLEANUP)

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UnTypedServiceExample

UnTypedService.cpp

PurchaseOrder.wsdl

Archivo Make

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