Source code of Windows XP (NT5)
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142 lines
3.8 KiB

#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <windows.h>
DWORD Size;
LPSTR WriteData = "Hello World\n";
VOID
ClientThread(
LPVOID ThreadParameter
)
{
DWORD n;
HANDLE C1;
LPSTR l;
printf("Create client...\n");
C1 = CreateFile("\\\\.\\Pipe\\cw\\testpipe",
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, // Security Attributes
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
NULL
);
if ( C1 == INVALID_HANDLE_VALUE ) {
DWORD Status;
printf("CreateFile returned Error %lx\n", Status = GetLastError() );
}
printf("Client writing...\n");
assert( TRUE == WriteFile(C1,WriteData,Size, &n, NULL) );
assert( n==Size );
printf("Client done Writing...\n");
// Get WriteData back from the server
l = LocalAlloc(LMEM_ZEROINIT,Size);
assert(l);
printf("Client reading\n");
assert( TRUE == ReadFile(C1,l,Size, &n, NULL));
printf("Client reading Done %s\n",l);
Sleep(10000);
printf("Client done Sleeping...\n");
}
int
main(
int argc,
char *argv[],
char *envp[]
)
{
DWORD n;
LPSTR l;
HANDLE Thread;
HANDLE S1,S2,S3; // Server handles
DWORD ThreadId;
DWORD Dummy;
OVERLAPPED S1Overlapped;
S1 = CreateNamedPipe("\\\\.\\Pipe\\cw\\testpipe",
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_WAIT | PIPE_READMODE_MESSAGE| PIPE_TYPE_MESSAGE,
2,
1024,
1024,
0,
NULL);
assert(S1 != INVALID_HANDLE_VALUE);
S2 = CreateNamedPipe("\\\\.\\Pipe\\cw\\testpipe",
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_WAIT | PIPE_READMODE_MESSAGE| PIPE_TYPE_MESSAGE,
992, //IGNORED
0, //IGNORED
0, //IGNORED
0, //IGNORED
NULL);
assert(S2 != INVALID_HANDLE_VALUE);
S3 = CreateNamedPipe("\\\\.\\Pipe\\cw\\testpipe",
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_WAIT | PIPE_READMODE_MESSAGE| PIPE_TYPE_MESSAGE,
992,
0,
0,
0,
NULL);
assert( S3 == INVALID_HANDLE_VALUE ); //Should fail - Used all instances
S1Overlapped.hEvent = NULL;
assert( FALSE == ConnectNamedPipe( S1, &S1Overlapped ));
assert( ERROR_IO_PENDING == GetLastError());
assert( FALSE == GetOverlappedResult( S1, &S1Overlapped, &Dummy, FALSE ));
assert( ERROR_IO_INCOMPLETE == GetLastError());
Size = strlen(WriteData)+1;
l = LocalAlloc(LMEM_ZEROINIT,Size);
assert(l);
Thread = CreateThread(NULL,0L,ClientThread,(LPVOID)99,0,&ThreadId);
assert(Thread);
printf("Waiting for connection\n");
assert( TRUE == GetOverlappedResult( S1, &S1Overlapped, &Dummy, TRUE ));
printf("Connected, Server now Reading\n");
if ( FALSE == ReadFile(S1,l,Size, &n, &S1Overlapped) ) {
DWORD Status;
printf("Server ReadFile returned Error %lx\n", Status = GetLastError() );
if ( Status == ERROR_IO_PENDING ) {
printf("Server got ERROR_IO_PENDING ok,Waiting for data\n");
assert( TRUE == GetOverlappedResult( S1, &S1Overlapped, &Dummy, TRUE ));
}
}
printf("Server Reading Done %s\n",l);
printf("Server Writing\n");
if ( FALSE == WriteFile(S1,l,Size, &n, &S1Overlapped) ) {
DWORD Status;
printf("Server WriteFile returned Error %lx\n", Status = GetLastError() );
if ( Status == ERROR_IO_PENDING ) {
printf("Server got ERROR_IO_PENDING ok,Waiting for transfer complete\n");
assert( TRUE == GetOverlappedResult( S1, &S1Overlapped, &Dummy, TRUE ));
}
}
printf("Server Writing Done %s\n",l);
}