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#include

#include

#include

#include

#include

#pragma comment(lib, "WS2_32.lib")

源代碼

// 初始化 Winsock

WSADATA wsaData;

int iResult;

iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);

if (iResult != 0) {

printf("WSAStartup failed: %d\n", iResult);

return NULL;

}

// 獲取連接屬性

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;

iResult = getaddrinfo("192.168.0.18", "7002", &hints, &result);

//iResult = getaddrinfo("192.168.37.187", "7002", &hints, &result);

if (iResult != 0) {

printf("getaddrinfo failed: %d\n", iResult);

WSACleanup();

return NULL;

}

// 創(chuàng)建 Socket 對象

ptr = result;

SOCKET ConnectSocket = INVALID_SOCKET;

ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype, ptr->ai_protocol);

if (ConnectSocket == INVALID_SOCKET) {

printf("Error at socket(): %ld\n", WSAGetLastError());

freeaddrinfo(result);

WSACleanup();

return NULL;

}

// 鏈接

iResult = connect(ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);

if (iResult == SOCKET_ERROR) {

printf("Error at socket(): %ld\n", WSAGetLastError());

closesocket(ConnectSocket);

ConnectSocket = INVALID_SOCKET;

}

int nSendBuf = 32 * 1000;//設置為32K

setsockopt(ConnectSocket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&nSendBuf, sizeof(int));

// Should really try the next address returned by getaddrinfo

// if the connect call failed

// But for this simple example we just free the resources

// returned by getaddrinfo and print an arror message

//freeaddrinfo(result);

if (ConnectSocket == INVALID_SOCKET) {

printf("Unable to connect to server!\n");

WSACleanup();

return NULL;

}

send(ConnectSocket, strSendContext.c_str(), strSendContext.length(), 0);

char szbuffer[1024] = { 0 };

recv(ConnectSocket, szbuffer, 1024, 0);

::closesocket(ConnectSocket);

說明

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