| | | Win32程序设计之网络通信 | | 2001-05-31·
·QQ新人类编译··yesky
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列表5
一个命名管道客户，可连接到列表4中的程序，并且发送信息给它
//***************************************************************
// From the book "Win32 System Services: The Heart of Windows NT"
// by Marshall Brain
// Published by Prentice Hall
file://
// Copyright 1994, by Prentice Hall.
file://
// This code implements a simple named pipe sender.
file://***************************************************************
// ssnpsend.cpp
// Usage: ssnpsend
#include
#include
int main()
{
char *toSendtxt="Test String";
HANDLE ssnpPipe;
DWORD NumBytesWritten;
char machineName[80];
char pipeName[80];
cout << "Enter name of server machine: ";
cin >> machineName;
wsprintf(pipeName, "\\\\%s\\pipe\\ssnp",
machineName);
/* Create the named pipe file handle for sending
messages */
ssnpPipe=CreateFile(pipeName,
GENERIC_WRITE, FILE_SHARE_READ,
(LPSECURITY_ATTRIBUTES) NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
(HANDLE) NULL);
/* Check and see if the named pipe file was
opened, if not terminate program */
if (ssnpPipe == INVALID_HANDLE_VALUE)
{
cerr << "ERROR: Unable to create a named pipe "
<< endl;
cerr << GetLastError() << endl;
return (1);
}
/* Repeatedly send message until program is
terminated */
while(1)
{
cout << "Sending..." << endl;
/* Write message to the pipe */
if (!WriteFile(ssnpPipe,
toSendtxt, (DWORD) strlen(toSendtxt)+1,
&NumBytesWritten, (LPOVERLAPPED) NULL))
{
/* If error occurs when writing to named
pipe, terminate program */
cerr << "ERROR: Unable to write to named pipe "
<< GetLastError() << endl;
CloseHandle(ssnpPipe);
return (1);
}
/* Wait before sending the message again */
Sleep(4800);
} /* while*/
}
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