MulticastUdpClientExample
Dieses Beispiel zeigt einen UDP-Client, der eine Anforderung multicastt und dann auf Antwortnachrichten von Servern wartet.
MulticastUdpClient.cpp
//------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
//------------------------------------------------------------
#ifndef _WINSOCKAPI_
#define _WINSOCKAPI_ /* Prevent inclusion of winsock.h in windows.h */
#endif
#ifndef UNICODE
#define UNICODE
#endif
#include <windows.h>
#include <stdio.h>
#include "WebServices.h"
#include "process.h"
#include "string.h"
#include "winsock2.h"
#include "Iphlpapi.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);
}
}
struct THREAD_INFO
{
WS_CHANNEL* channel;
};
// This thread is used to receive reply messages
DWORD WINAPI ReceiverThread(void* parameter)
{
HRESULT hr = NOERROR;
THREAD_INFO* threadInfo = (THREAD_INFO*)parameter;
WS_CHANNEL* channel = threadInfo->channel;
WS_MESSAGE* message = NULL;
WS_ERROR* error = NULL;
WS_HEAP* heap = NULL;
// Create an error object for storing rich error information
hr = WsCreateError(
NULL,
0,
&error);
if (FAILED(hr))
{
goto Exit;
}
// Create a heap to store deserialized data
hr = WsCreateHeap(
/*maxSize*/ 2048,
/*trimSize*/ 512,
NULL,
0,
&heap,
error);
if (FAILED(hr))
{
goto Exit;
}
hr = WsCreateMessageForChannel(
channel,
NULL,
0,
&message,
error);
if (FAILED(hr))
{
goto Exit;
}
// Go into a receive loop. The loop terminates when the
// main thread aborts the channel (causing subsequent receives
// to fail).
for (;;)
{
// Receive start of reply message (headers)
hr = WsReadMessageStart(channel, message, NULL, error);
if (FAILED(hr))
{
goto Exit;
}
// Get action value
WS_XML_STRING receivedAction;
hr = WsGetHeader(
message,
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.OrderConfirmation.action, error) != S_OK)
{
hr = WS_E_ENDPOINT_ACTION_NOT_SUPPORTED;
goto Exit;
}
// Read the order confirmation from the body
_OrderConfirmationType* orderConfirmation;
hr = WsReadBody(message, &PurchaseOrder_wsdl.globalElements.OrderConfirmationType,
WS_READ_REQUIRED_POINTER, heap, &orderConfirmation, sizeof(orderConfirmation), error);
if (FAILED(hr))
{
goto Exit;
}
// Receive end of message
hr = WsReadMessageEnd(channel, message, NULL, error);
if (FAILED(hr))
{
goto Exit;
}
// Print out confirmation contents
wprintf(L"%.*s\n",
orderConfirmation->expectedShipDate.length,
orderConfirmation->expectedShipDate.chars);
// Reset message so it can used again
hr = WsResetMessage(message, error);
if (FAILED(hr))
{
goto Exit;
}
// Reset heap
hr = WsResetHeap(heap, error);
if (FAILED(hr))
{
goto Exit;
}
}
Exit:
// Print out the error. Ignore aborted errors, which are
// caused by the client thread aborting the channel.
if (FAILED(hr) && hr != WS_E_OPERATION_ABORTED)
{
PrintError(hr, error);
}
if (message != NULL)
{
WsFreeMessage(message);
}
if (error != NULL)
{
WsFreeError(error);
}
if (heap != NULL)
{
WsFreeHeap(heap);
}
return hr;
}
// Main entry point
int __cdecl wmain(int argc, __in_ecount(argc) wchar_t **argv)
{
UNREFERENCED_PARAMETER(argc);
UNREFERENCED_PARAMETER(argv);
HRESULT hr = NOERROR;
WS_ERROR* error = NULL;
WS_CHANNEL* channel = NULL;
WS_MESSAGE* message = NULL;
IP_ADAPTER_ADDRESSES* adapterAddresses = NULL;
HANDLE receiverThreadHandle = NULL;
WS_STRING serviceUrl = WS_STRING_VALUE(L"soap.udp://239.255.255.250:809");
WS_STRING productName = WS_STRING_VALUE(L"Pencil");
WS_STRING toUrl = WS_STRING_VALUE(L"http://localhost/request");
HANDLE serverStartedEvent = NULL;
// Create an error object for storing rich error information
hr = WsCreateError(
NULL,
0,
&error);
if (FAILED(hr))
{
goto Exit;
}
ULONG addressFamily = AF_INET;
// First see how much space is needed for adapter addresses
ULONG adapterBufferSize = 0;
ULONG retVal = GetAdaptersAddresses(addressFamily, 0, NULL, NULL, &adapterBufferSize);
if (retVal != ERROR_BUFFER_OVERFLOW)
{
hr = HRESULT_FROM_WIN32(retVal);
goto Exit;
}
// Allocate space for information about adapters
adapterAddresses = (IP_ADAPTER_ADDRESSES*)HeapAlloc(GetProcessHeap(), 0, adapterBufferSize);
if (adapterAddresses == NULL)
{
hr = E_OUTOFMEMORY;
goto Exit;
}
// Get list of adapters
retVal = GetAdaptersAddresses(AF_INET, 0, NULL, adapterAddresses, &adapterBufferSize);
if (retVal != 0)
{
hr = HRESULT_FROM_WIN32(retVal);
goto Exit;
}
// Create a UDP duplex channel
hr = WsCreateChannel(
WS_CHANNEL_TYPE_DUPLEX,
WS_UDP_CHANNEL_BINDING,
NULL,
0,
NULL,
&channel,
error);
if (FAILED(hr))
{
goto Exit;
}
// Create an event to synchronize the client and server processes.
serverStartedEvent = CreateEventW(
NULL,
TRUE,
FALSE,
L"WebServicesExampleServerStartedEvent");
if (NULL == serverStartedEvent)
{
wprintf(
L"Failed to create the client-server synchronization event (errorCode=0x%lx).\n",
GetLastError());
hr = HRESULT_FROM_WIN32(GetLastError());
goto Exit;
}
// Wait for the server to startup.
DWORD win32Error;
win32Error = WaitForSingleObject(serverStartedEvent, 10000);
if (WAIT_OBJECT_0 != win32Error)
{
if (WAIT_FAILED == win32Error)
{
win32Error = GetLastError();
}
wprintf(
L"Failed to wait for the client-server synchronization event (errorCode=0x%lx).\n",
win32Error);
hr = HRESULT_FROM_WIN32(GetLastError());
goto Exit;
}
// Initialize address to the multicast address to send to
WS_ENDPOINT_ADDRESS address;
address.url = serviceUrl;
address.headers = NULL;
address.extensions = NULL;
address.identity = NULL;
// Open channel to address
hr = WsOpenChannel(channel, &address, NULL, error);
if (FAILED(hr))
{
goto Exit;
}
// Generate a unique message ID that will be used for all messages
WS_UNIQUE_ID messageID;
ZeroMemory(&messageID, sizeof(messageID));
if (UuidCreate(&messageID.guid) != RPC_S_OK)
{
hr = E_FAIL;
goto Exit;
}
// Create a thread that will receive messages
THREAD_INFO receiverThreadInfo;
receiverThreadInfo.channel = channel;
receiverThreadHandle = CreateThread(NULL, 0, ReceiverThread, &receiverThreadInfo, 0, NULL);
if (receiverThreadHandle == NULL)
{
hr = HRESULT_FROM_WIN32(GetLastError());
goto Exit;
}
hr = WsCreateMessageForChannel(
channel,
NULL,
0,
&message,
error);
if (FAILED(hr))
{
goto Exit;
}
// Initialize body data
_PurchaseOrderType purchaseOrder;
purchaseOrder.quantity = 100;
purchaseOrder.productName = productName;
// Send the same message twice
for (int i = 0; i < 2; i++)
{
// For each adapter
for (IP_ADAPTER_ADDRESSES* adapterAddress = adapterAddresses;
adapterAddress != NULL; adapterAddress = adapterAddress->Next)
{
// Only send on the loopback adapter
if (adapterAddress->IfType != IF_TYPE_SOFTWARE_LOOPBACK)
{
continue;
}
// Get multicast interface index
ULONG interfaceIndex = adapterAddress->IfIndex;
// Set property on channel which controls which multicast adapater address
// is used when sending to a multicast address.
hr = WsSetChannelProperty(channel, WS_CHANNEL_PROPERTY_MULTICAST_INTERFACE,
&interfaceIndex, sizeof(interfaceIndex), error);
if (FAILED(hr))
{
goto Exit;
}
// Initialize message headers
hr = WsInitializeMessage(message, WS_BLANK_MESSAGE, NULL, error);
if (FAILED(hr))
{
goto Exit;
}
// Add the action header
hr = WsSetHeader(
message,
WS_ACTION_HEADER,
WS_XML_STRING_TYPE,
WS_WRITE_REQUIRED_VALUE,
PurchaseOrder_wsdl.messages.PurchaseOrder.action,
sizeof(*PurchaseOrder_wsdl.messages.PurchaseOrder.action),
error);
if (FAILED(hr))
{
goto Exit;
}
// Add the message ID
hr = WsSetHeader(
message,
WS_MESSAGE_ID_HEADER,
WS_UNIQUE_ID_TYPE,
WS_WRITE_REQUIRED_VALUE,
&messageID,
sizeof(messageID),
error);
if (FAILED(hr))
{
goto Exit;
}
// Set the reply to address to be a anonymous URI (modeled as a 0 length URI), which
// indicates to the receiver that they should reply using the source IP address.
WS_ENDPOINT_ADDRESS replyTo;
ZeroMemory(&replyTo, sizeof(replyTo));
hr = WsSetHeader(
message,
WS_REPLY_TO_HEADER,
WS_ENDPOINT_ADDRESS_TYPE,
WS_WRITE_REQUIRED_VALUE,
&replyTo,
sizeof(replyTo),
error);
if (FAILED(hr))
{
goto Exit;
}
// Address the message to differ from the destination. When the message
// is addressed manually, the endpoint address specified at open time
// will only be used to determine the destination of the message (not
// to determine the value of the To header). In this case, the message is
// addressed to a stable address.
WS_ENDPOINT_ADDRESS to;
ZeroMemory(&to, sizeof(to));
to.url = toUrl;
hr = WsAddressMessage(message, &to, error);
if (FAILED(hr))
{
goto Exit;
}
// Write the message headers
hr = WsWriteMessageStart(channel, message, NULL, error);
if (FAILED(hr))
{
goto Exit;
}
// Write the body data
hr = WsWriteBody(
message,
&PurchaseOrder_wsdl.globalElements.PurchaseOrderType,
WS_WRITE_REQUIRED_VALUE,
&purchaseOrder,
sizeof(purchaseOrder),
error);
if (FAILED(hr))
{
goto Exit;
}
// Send the entire message
hr = WsWriteMessageEnd(channel, message, NULL, error);
if (FAILED(hr))
{
goto Exit;
}
// Reset message so it can used again
hr = WsResetMessage(message, error);
if (FAILED(hr))
{
goto Exit;
}
}
}
// Wait for replies to be processed by the receiver thread
Sleep(1000);
Exit:
if (FAILED(hr))
{
// Print out the error
PrintError(hr, error);
}
fflush(
stdout);
if (receiverThreadHandle != NULL)
{
// Abort the channel. This will cause the next receive to fail.
WsAbortChannel(channel, error);
// Wait for the receive thread to exit, and clean up the handle.
WaitForSingleObject(receiverThreadHandle, INFINITE);
CloseHandle(receiverThreadHandle);
}
if (channel != NULL)
{
// Close the channel
WsCloseChannel(channel, NULL, error);
}
if (message != NULL)
{
WsFreeMessage(message);
}
if (channel != NULL)
{
WsFreeChannel(channel);
}
if (NULL != serverStartedEvent)
{
CloseHandle(serverStartedEvent);
}
if (error != NULL)
{
WsFreeError(error);
}
if (adapterAddresses != NULL)
{
HeapFree(GetProcessHeap(), 0, adapterAddresses);
}
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>
Makefile
#------------------------------------------------------------
# Copyright (C) Microsoft. All rights reserved.
#------------------------------------------------------------
!include <Win32.Mak>
EXTRA_LIBS = WebServices.lib rpcrt4.lib Iphlpapi.lib
all: $(OUTDIR) $(OUTDIR)\WsHttpClient.exe
"$(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)\HttpClient.obj: HttpClient.cpp $(OUTDIR)\PurchaseOrder.wsdl.c
$(cc) $(cdebug) $(cflags) $(cvarsmt) /WX -I$(OUTDIR) /Fo"$(OUTDIR)\\" /Fd"$(OUTDIR)\\" HttpClient.cpp
$(OUTDIR)\WsHttpClient.exe: $(OUTDIR)\HttpClient.obj $(OUTDIR)\PurchaseOrder.wsdl.obj
$(link) $(ldebug) $(conlflags) $(conlibsmt) $(EXTRA_LIBS) -out:$(OUTDIR)\WsHttpClient.exe $(OUTDIR)\HttpClient.obj $(OUTDIR)\PurchaseOrder.wsdl.obj /PDB:$(OUTDIR)\WsHttpClient.PDB
clean:
$(CLEANUP)