私はwinsockを初めて使用します。新しい接続を受け入れるサーバーソケットを作成しようとしましたが、外部の実行可能ファイルを呼び出します。外部実行可能ファイルのstdinとstdoutを、受け入れられたクライアントソケットにリダイレクトするにはどうすればよいですか。グーグルで以下のコードを見つけましたが、機能しません。新しいプロセスは正常に作成されましたが、クライアントは新しいプロセスからデータを受信できませんでした。Windows7とVisualStudio2008Expressエディションを使用しています。ヘルプやコメントをいただければ幸いです。どうもありがとうございます！
サーバー
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdio.h>
#pragma comment(lib, "Ws2_32.lib")
#define DEFAULT_PORT "27015"
#define DEFAULT_BUFLEN 512
int _tmain(int argc, _TCHAR* argv[])
{
WSADATA wsaData;
int iResult;
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
struct addrinfo *result = NULL, *ptr = NULL, hints;
ZeroMemory(&hints, sizeof (hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
// Resolve the local address and port to be used by the server
iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
SOCKET ListenSocket = INVALID_SOCKET;
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
// Setup the TCP listening socket
iResult = bind( ListenSocket, result->ai_addr, (int)result->ai_addrlen);
freeaddrinfo(result);
if ( listen( ListenSocket, SOMAXCONN ) == SOCKET_ERROR ) {
printf( "Listen failed with error: %ld\n", WSAGetLastError() );
closesocket(ListenSocket);
WSACleanup();
return 1;
}
SOCKET ClientSocket;
ClientSocket = INVALID_SOCKET;
// Accept a client socket
ClientSocket = accept(ListenSocket, NULL, NULL);
if (ClientSocket == INVALID_SOCKET) {
printf("accept failed: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
return 1;
}
STARTUPINFO si;
memset( &si, 0, sizeof( si ) );
si.cb = sizeof( si );
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.wShowWindow = SW_HIDE;
si.hStdInput = (HANDLE)ClientSocket;
si.hStdOutput = (HANDLE)ClientSocket;
si.hStdError = (HANDLE)ClientSocket;
PROCESS_INFORMATION pi;
TCHAR cmd[] = TEXT("C:\\Users\\dell\\Desktop\\hello.exe");
if (CreateProcess(NULL, cmd, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi)) {
printf("create process successfully\n");
DWORD i = WaitForSingleObject( pi.hProcess, INFINITE );
printf("%8x\n", i);
}
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
closesocket( ClientSocket );
WSACleanup();
}
クライアント
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
// Need to link with Ws2_32.lib, Mswsock.lib, and Advapi32.lib
#pragma comment (lib, "Ws2_32.lib")
#pragma comment (lib, "Mswsock.lib")
#pragma comment (lib, "AdvApi32.lib")
#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "27015"
int _tmain(int argc, _TCHAR* argv[])
{
WSADATA wsaData;
SOCKET ConnectSocket = INVALID_SOCKET;
struct addrinfo *result = NULL,
*ptr = NULL,
hints;
char recvbuf[DEFAULT_BUFLEN];
int iResult;
int recvbuflen = DEFAULT_BUFLEN;
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
ZeroMemory( &hints, sizeof(hints) );
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
// Resolve the server address and port
iResult = getaddrinfo("localhost", DEFAULT_PORT, &hints, &result);
// Attempt to connect to an address until one succeeds
for(ptr=result; ptr != NULL ;ptr=ptr->ai_next) {
// Create a SOCKET for connecting to server
ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype,
ptr->ai_protocol);
if (ConnectSocket == INVALID_SOCKET) {
printf("socket failed with error: %ld\n", WSAGetLastError());
WSACleanup();
return 1;
}
// Connect to server.
iResult = connect( ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);
if (iResult == SOCKET_ERROR) {
closesocket(ConnectSocket);
ConnectSocket = INVALID_SOCKET;
continue;
}
break;
}
freeaddrinfo(result);
if (ConnectSocket == INVALID_SOCKET) {
printf("Unable to connect to server!\n");
WSACleanup();
return 1;
}
// Receive until the peer closes the connection
do {
iResult = recv(ConnectSocket, recvbuf, recvbuflen, 0);
if ( iResult > 0 )
printf("Bytes received: %d\n", iResult);
else if ( iResult == 0 )
printf("Connection closed\n");
else
printf("recv failed with error: %d\n", WSAGetLastError());
} while( iResult > 0 );
// cleanup
closesocket(ConnectSocket);
WSACleanup();
return 0;
}
外部プログラムhello.cpp
int _tmain(int argc, _TCHAR* argv[])
{
printf("hello world!\n");
return 0;
}