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我是winsock的新手，我嘗試編寫一個接受新連接的服務器套接字，然後調用外部可執行文件。我們如何將外部可執行文件的stdin和stdout重定向到已被接受的客戶端套接字。我用google搜索了下面的代碼，但它不起作用。新進程已成功創建，但客戶端無法從新進程接收任何數據。我正在使用Windows 7和Visual Studio 2008 Express版本。任何幫助和意見表示讚賞。非常感謝！將進程的IO重定向到Windows套接字
服務器
#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();
}
客戶
#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;
}
外部程序HELLO.CPP
int _tmain(int argc, _TCHAR* argv[])
{
printf("hello world!\n");
return 0;
}
我的回答很不清楚，需要轉述嗎？ – 2011-02-15 01:24:26
我只是在說明涉及的Win32 API函數，因此dien不必去尋找它們，就像你的答案所建議的那樣。 – 2011-02-15 19:04:35