[项目拆解系列001]_Windows下命名管道实例

Server端

#include <Windows.h>
#include <stdio.h>

void main(void){
    HANDLE PipeHandle;
    DWORD BytesRead;
    CHAR buffer[256];

    if((PipeHandle = CreateNamedPipe("\\\\.\\Pipe\\Jim",
        PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE | PIPE_READMODE_BYTE,
        1,
        0,
        0,
        1000,
        NULL)) == INVALID_HANDLE_VALUE){
        printf("Create NamedPipe failed with error %d\n", GetLastError());
        return;
    }

    printf("Server is now running, listenning for the client.\n");

    while(1){
        if(ConnectNamedPipe(PipeHandle, NULL) == 0){
            printf("ConnectNamedPipe failed with error %d\n", GetLastError());
            CloseHandle(PipeHandle);
            return;
        }

        if(ReadFile(PipeHandle, buffer, sizeof(buffer), &BytesRead, NULL) <=0){
            printf("ReadFile failed with error %d\n", GetLastError());
            CloseHandle(PipeHandle);
            return;
        }

        printf("%.*s\n", BytesRead, buffer);

        if(DisconnectNamedPipe(PipeHandle) == 0){
            printf("ReadFile failed with error %d\n", GetLastError());
            return;
        }
    }

    CloseHandle(PipeHandle);
    return;
}

 

Client端

#include <Windows.h>
#include <stdio.h>

#define PIPE_NAME "\\\\.\\Pipe\\Jim"

void main(void){
    HANDLE PipeHandle;
    DWORD BytesWritten;

    if(WaitNamedPipe(PIPE_NAME, NMPWAIT_WAIT_FOREVER) == 0){
        printf("WaitNamedPipe failed with error %d\n", GetLastError());
        return;
    }

    printf("Server is now running.");

    if((PipeHandle = CreateFile(PIPE_NAME,
        GENERIC_READ | GENERIC_WRITE, 0,
        (LPSECURITY_ATTRIBUTES)NULL, OPEN_EXISTING,
        FILE_ATTRIBUTE_NORMAL,
        (HANDLE)NULL
        )) == INVALID_HANDLE_VALUE){
        printf("CreateFile failed with error %d\n", GetLastError());
        return;
    }

    if(WriteFile(PipeHandle, "This is a test.", 15, &BytesWritten, NULL) == 0){
        printf("ReadFile failed with error %d\n", GetLastError());
        CloseHandle(PipeHandle);
        return;
    }

    printf("Wrote %d bytes.\n", BytesWritten);

    return;
}