Win32 RPC 编程(一)

 

Win32 RPC 编程(一)  示例下载

1.首先使用uuidgen工具（$(VS)\Common7\Tools）生成idl接口文件

uuidgen /i /ohello.idl

注意"/o"和文件名之间没有空白！

2.然后打开生成的接口文件，在里面添加接口

[
	uuid(d1717d33-8e03-456c-a79b-57fc212f5042),
	version(1.0),
	pointer_default(unique)
]

interface hello
{
	void HelloProc([in, string] unsigned char * pszString);
	void ShutDown(void);
}

 

 

3.编写acf文件，此文件要与idl文件同名且放在同一目录下。此文件是可选的。

[
	implicit_handle (handle_t hello_Binding)
]

interface hello
{
}

 

 

4.使用midl编译idl文件

midl hello.idl

编译生成hello.h, hello_c.c, hello_s.c三个文件。hello.h为客户端和服务端共用头文件，hello_c.c要放到客户端，hello_s.c要放到服务端。

5.服务端部分代码

#include <iostream>
#include <hello.h>

using namespace std;

int main(void)
{
	RPC_STATUS status = 0;

	unsigned int nMinCalls = 1;
	unsigned int nMaxCalls = 20;

	status = RpcServerUseProtseqEp(
		(unsigned char *)"ncacn_np",
		nMaxCalls,
		(unsigned char *)"\\pipe\\{a5194558-21a6-4978-9610-2072fcf1dc6e}",
		NULL );
	if ( status != 0 )
	{
		cout<<"RpcServerUseProtseqEp return "<<status<<" !"<<endl;
		return 1;
	}

	status = RpcServerRegisterIf(
		hello_v1_0_s_ifspec,
		NULL,
		NULL );
	if ( status != 0 )
	{
		cout<<"RpcServerRegisterIf return "<<status<<" !"<<endl;
		return 1;
	}

	cout<<"Begin RPC server listen!"<<endl;

	status = RpcServerListen(
		nMinCalls,
		nMaxCalls,
		FALSE );
	if ( status != 0 )
	{
		cout<<"RpcServerListen return "<<status<<" !"<<endl;
		return 1;
	}

	cin.get();
	return 0;
}

void * __RPC_USER MIDL_user_allocate(size_t len)
{
	return (malloc(len));
}

void __RPC_USER MIDL_user_free(void* ptr)
{
	free(ptr);
}

void HelloProc(unsigned char *pszString)
{
	cout<<pszString<<endl;
}

void ShutDown()
{
	RPC_STATUS status = 0;

	status = RpcMgmtStopServerListening(NULL);
	if ( status != 0 )
		cout<<"RpcMgmtStopServerListening return "<<status<<" !"<<endl;

	status = RpcServerUnregisterIf(NULL, NULL, FALSE);
	if ( status != 0 )
		cout<<"RpcServerUnregisterIf return "<<status<<" !"<<endl;
}

 

 

6.客户端代码

#include <iostream>
#include <string>
#include <hello.h>

using namespace std;

void doRpcCall();

int main(int argc, char** argv)
{
	RPC_STATUS status;

	unsigned char * pszNetworkAddress = NULL;
	unsigned char * pszStringBinding = NULL;

	for ( int i = 1; i < argc; ++i )
	{
		if ( strcmp(argv[i], "-ip") == 0 )
		{
			pszNetworkAddress = (unsigned char *)argv[++i];
		}
	}

	status = RpcStringBindingCompose(
		NULL,
		(unsigned char *)"ncacn_np",
		pszNetworkAddress,
		(unsigned char *)"\\pipe\\{a5194558-21a6-4978-9610-2072fcf1dc6e}",
		NULL,
		&pszStringBinding );
	if ( status != 0 )
	{
		cout<<"RpcStringBindingCompose return "<<status<<" !"<<endl;
		return 1;
	}

	cout<<"pszStringBinding = "<<pszStringBinding<<endl;

	status = RpcBindingFromStringBinding(
		pszStringBinding,
		&hello_Binding );
	if ( status != 0 )
	{
		cout<<"RpcBindingFromStringBinding return "<<status<<" !"<<endl;
		return 1;
	}

	doRpcCall();

	status = RpcStringFree( &pszStringBinding );
	if ( status != 0 )
		cout<<"RpcStringFree return "<<status<<" !"<<endl;

	status = RpcBindingFree( &hello_Binding );
	if ( status != 0 )
		cout<<"RpcBindingFree return "<<status<<" !"<<endl;

	cin.get();
	return 0;
}

void doRpcCall()
{
	char buff[1024];

	RpcTryExcept
	{
		while (true)
		{
			cout<<"Please input a string param for RPC call:"<<endl;
			cin.getline(buff, 1023);

			if ( strcmp(buff, "exit") == 0 || strcmp(buff, "quit") == 0 )
			{
				ShutDown();
				break;
			}
			else
			{
				HelloProc( (unsigned char *)buff );
				cout<<"RPC call <HelloProc> succeed!"<<endl;
			}
		}  
	}
	RpcExcept(1)
	{
		unsigned long ulCode = RpcExceptionCode();
		cout<<"RPC exception occured! code: "<<ulCode<<endl;
	}
	RpcEndExcept
}

void * __RPC_USER MIDL_user_allocate(size_t len)
{
	return (malloc(len));
}

void __RPC_USER MIDL_user_free(void* ptr)
{
	free(ptr);
}