HttpCalculatorServiceExample
This example shows how to use service host for hosting a calculator service over HTTP.
HttpCalculatorService.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 "CalculatorService.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;
HRESULT CALLBACK Add(
__in const WS_OPERATION_CONTEXT* context,
__in int a,
__in int b,
__out int* result,
__in_opt const WS_ASYNC_CONTEXT* asyncContext,
__in_opt WS_ERROR* error)
{
UNREFERENCED_PARAMETER(context);
UNREFERENCED_PARAMETER(asyncContext);
UNREFERENCED_PARAMETER(error);
*result = a + b;
printf ("%d + %d = %d\n", a, b, *result);
fflush(stdout);
return NOERROR;
}
HRESULT CALLBACK Subtract(
__in const WS_OPERATION_CONTEXT* context,
__in int a,
__in int b,
__out int* result,
__in_opt const WS_ASYNC_CONTEXT* asyncContext,
__in_opt WS_ERROR* error)
{
UNREFERENCED_PARAMETER(context);
UNREFERENCED_PARAMETER(asyncContext);
UNREFERENCED_PARAMETER(error);
*result = a - b;
printf ("%d - %d = %d\n", a, b, *result);
fflush(stdout);
return NOERROR;
}
HRESULT CALLBACK CloseChannelCallback(
__in const WS_OPERATION_CONTEXT* context,
__in_opt const WS_ASYNC_CONTEXT* asyncContext)
{
UNREFERENCED_PARAMETER(context);
UNREFERENCED_PARAMETER(asyncContext);
SetEvent(closeServer);
return NOERROR;
}
static const DefaultBinding_ICalculatorFunctionTable calculatorFunctions = {Add, Subtract};
// Method contract for the service
static const WS_SERVICE_CONTRACT calculatorContract =
{
&CalculatorService_wsdl.contracts.DefaultBinding_ICalculator, // comes from the generated header.
NULL, // for not specifying the default contract
&calculatorFunctions // specified by the user
};
// 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);
// Initialize service endpoint
serviceEndpoint.address.url.chars = L"https://+: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 = &calculatorContract; // 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;
}
// Create Event object for closing the server
closeServer = CreateEvent(
NULL,
TRUE,
FALSE,
NULL);
if (closeServer == NULL)
{
hr = HRESULT_FROM_WIN32(GetLastError());
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;
}
CalculatorService.wsdl
<wsdl:definitions
xmlns:soap="https://schemas.xmlsoap.org/wsdl/soap/"
xmlns:tns="https://Example.org"
xmlns:xsd="https://www.w3.org/2001/XMLSchema"
xmlns:wsaw="https://www.w3.org/2006/05/addressing/wsdl"
xmlns:soap12="https://schemas.xmlsoap.org/wsdl/soap12/"
targetNamespace="https://Example.org"
xmlns:wsdl="https://schemas.xmlsoap.org/wsdl/">
<wsdl:types>
<xsd:schema targetNamespace="https://Example.org" elementFormDefault="qualified" >
<xsd:element name="Add">
<xsd:complexType>
<xsd:sequence>
<xsd:element minOccurs="0" name="a" type="xsd:int" />
<xsd:element minOccurs="0" name="b" type="xsd:int" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="AddResponse">
<xsd:complexType>
<xsd:sequence>
<xsd:element minOccurs="0" name="result" type="xsd:int" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="Subtract">
<xsd:complexType>
<xsd:sequence>
<xsd:element minOccurs="0" name="a" type="xsd:int" />
<xsd:element minOccurs="0" name="b" type="xsd:int" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="SubtractResponse">
<xsd:complexType>
<xsd:sequence>
<xsd:element minOccurs="0" name="result" type="xsd:int" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
</wsdl:types>
<wsdl:message name="ICalculator_Add_InputMessage">
<wsdl:part name="parameters" element="tns:Add" />
</wsdl:message>
<wsdl:message name="ICalculator_Add_OutputMessage">
<wsdl:part name="parameters" element="tns:AddResponse" />
</wsdl:message>
<wsdl:message name="ICalculator_Subtract_InputMessage">
<wsdl:part name="parameters" element="tns:Subtract" />
</wsdl:message>
<wsdl:message name="ICalculator_Subtract_OutputMessage">
<wsdl:part name="parameters" element="tns:SubtractResponse" />
</wsdl:message>
<wsdl:portType name="ICalculator">
<wsdl:operation name="Add">
<wsdl:input wsaw:Action="https://Example.org/ICalculator/Add" message="tns:ICalculator_Add_InputMessage" />
<wsdl:output wsaw:Action="https://Example.org/ICalculator/AddResponse" message="tns:ICalculator_Add_OutputMessage" />
</wsdl:operation>
<wsdl:operation name="Subtract">
<wsdl:input wsaw:Action="https://Example.org/ICalculator/Subtract" message="tns:ICalculator_Subtract_InputMessage" />
<wsdl:output wsaw:Action="https://Example.org/ICalculator/SubtractResponse" message="tns:ICalculator_Subtract_OutputMessage" />
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="DefaultBinding_ICalculator" type="tns:ICalculator">
<soap:binding transport="https://schemas.xmlsoap.org/soap/http" />
<wsdl:operation name="Add">
<soap:operation soapAction="https://Example.org/ICalculator/Add" style="document" />
<wsdl:input>
<soap:body use="literal" />
</wsdl:input>
<wsdl:output>
<soap:body use="literal" />
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="Subtract">
<soap:operation soapAction="https://Example.org/ICalculator/Subtract" style="document" />
<wsdl:input>
<soap:body use="literal" />
</wsdl:input>
<wsdl:output>
<soap:body use="literal" />
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="CalculatorService">
<wsdl:port name="ICalculator" binding="tns:DefaultBinding_ICalculator">
<soap:address location="https://Example.org/ICalculator" />
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
Makefile
!include <Win32.Mak>
EXTRA_LIBS = WebServices.lib rpcrt4.lib Iphlpapi.lib
all: $(OUTDIR) $(OUTDIR)\WsHttpCalculatorService.exe
"$(OUTDIR)" :
if not exist "$(OUTDIR)/$(NULL)" mkdir "$(OUTDIR)"
$(OUTDIR)\CalculatorService.wsdl.c: CalculatorService.wsdl
Wsutil.exe /wsdl:CalculatorService.wsdl /string:WS_STRING /out:$(OUTDIR)
$(OUTDIR)\CalculatorService.wsdl.obj: $(OUTDIR)\CalculatorService.wsdl.c
$(cc) $(cdebug) $(cflags) $(cvarsmt) /WX -I$(OUTDIR) /Fo"$(OUTDIR)\\" /Fd"$(OUTDIR)\\" $(OUTDIR)\CalculatorService.wsdl.c
$(OUTDIR)\HttpCalculatorService.obj: HttpCalculatorService.cpp $(OUTDIR)\CalculatorService.wsdl.c
$(cc) $(cdebug) $(cflags) $(cvarsmt) /WX -I$(OUTDIR) /Fo"$(OUTDIR)\\" /Fd"$(OUTDIR)\\" HttpCalculatorService.cpp
$(OUTDIR)\WsHttpCalculatorService.exe: $(OUTDIR)\HttpCalculatorService.obj $(OUTDIR)\CalculatorService.wsdl.obj
$(link) $(ldebug) $(conlflags) $(conlibsmt) $(EXTRA_LIBS) -out:$(OUTDIR)\WsHttpCalculatorService.exe $(OUTDIR)\HttpCalculatorService.obj $(OUTDIR)\CalculatorService.wsdl.obj /PDB:$(OUTDIR)\WsHttpCalculatorService.PDB
clean:
$(CLEANUP)