clientinfo

#include <iostream>
#include <WinSock2.h>
#include <WS2tcpip.h>
#pragma comment(lib, "ws2_32") // chi thị pragma để gắn hư viện
#define _WINSOCK_DEPRECATED_NO_WARNINGS

#include<string.h>
//lib get info computer
#include <windows.h>
#pragma comment(lib, "user32.lib")

#include <sstream> //convert to string


int main() {


	//Get data computer
	SYSTEM_INFO siSysInfo;
	GetSystemInfo(&siSysInfo);

	int OEMID = siSysInfo.dwOemId;
	int numOfProcess =	siSysInfo.dwNumberOfProcessors;
	int pageSize = siSysInfo.dwPageSize; 
	int processType = siSysInfo.dwProcessorType; 
	long miniumAppAddr =	siSysInfo.lpMinimumApplicationAddress;
	long maximumAppAddr =	siSysInfo.lpMaximumApplicationAddress; 
	int activeProcessMask =	siSysInfo.dwActiveProcessorMask; 

	// khoi tao winsock
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//khai bao socket
	SOCKET client = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
	printf("Nhap thong tin server (ip port): ");
	string diaChiIP;  cin >> diaChiIP;
	int port;  cin >> port;
	printf("du lieu gui cho server: ");
	string data;

	data.append("OEM ID : "); data.append(to_string(OEMID));
	data.append("Num Of Process"); data.append(to_string(numOfProcess));
	data.append("Page Size"); data.append(to_string(pageSize));
	data.append("Process Type"); data.append(to_string(processType));
	data.append("Minium App Addr "); data.append(to_string(miniumAppAddr));
	data.append("Maximum App Addr"); data.append(to_string(maximumAppAddr));
	data.append("Active Process Mask"); data.append(to_string(activeProcessMask));

	//khai bao dia chi server
	SOCKADDR_IN addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = inet_addr(diaChiIP);
	addr.sin_port = htons(port);

	//connect
	int ret = connect(client, (SOCKADDR*)&addr, sizeof(addr));
	if (ret == SOCKET_ERROR) {
		ret = WSAGetLastError();
		return 1;
	}
	// gat info computer


	//send data
	send(client, data, sizeof(data), 0);
	closesocket(client);
	WSACleanup();
}

serverinfo

#include <iostream>
#include <WinSock2.h>
#include <WS2tcpip.h>
#pragma comment(lib, "ws2_32") // chi thị pragma để gắn hư viện
#define _WINSOCK_DEPRECATED_NO_WARNINGS

#include<string.h>

int main() {
	// khoi tao winsock
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//khai bao socket
	SOCKET listener = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);

	printf("Nhap thong tin server (port): ");
	int port;  cin >> port;
	//khai bao dia chi server
	SOCKADDR_IN addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = htonl(INADDR_ANY); //bat ki
	addr.sin_port = htons(port);

	bind(listener, (SOCKADDR*)&addr, sizeof(addr)); // gan socket voi cau truc da chi
	listen(listener, 5); // chuyen sang trang thai cho ket noi

	SOCKET client = accept(listener, NULL, NULL);

	char buf[2048];
	int ret;
	float f;

	while (1) {
		ret = recv(client, buf, sizeof(f), 0);
		if (ret <= 0) {
			printf("recv() failed\n");
			return 1;
		}

		printf("%s\n", buf);
	}

	closesocket(client);
	closesocket(listener);
	WSACleanup();

}

TCPClient

#include <iostream>
#include <WinSock2.h>
#include <WS2tcpip.h>
#pragma comment(lib, "ws2_32") // chi thị pragma để gắn hư viện
#define _WINSOCK_DEPRECATED_NO_WARNINGS

#include<string.h>

int main() {




	// khoi tao winsock
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//khai bao socket
	SOCKET client = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
	printf("Nhap thong tin server (ip port): ");
	string diaChiIP;  cin >> diaChiIP;
	int port;  cin >> port;
	printf("du lieu gui cho server: ");
	string data; cin >> data;

	//khai bao dia chi server
	SOCKADDR_IN addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = inet_addr(diaChiIP);
	addr.sin_port = htons(port);

	//connect
	int ret = connect(client, (SOCKADDR*)&addr, sizeof(addr));
	if (ret == SOCKET_ERROR) {
		ret = WSAGetLastError();
		return 1;
	}

	//send data
	send(client, data, sizeof(data), 0);
	closesocket(client);
	WSACleanup();
}

TCPServer

#include <iostream>
#include <WinSock2.h>
#include <WS2tcpip.h>
#pragma comment(lib, "ws2_32") // chi thị pragma để gắn hư viện
#define _WINSOCK_DEPRECATED_NO_WARNINGS

#include<string.h>

int main() {
	// khoi tao winsock
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//khai bao socket
	SOCKET listener = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);

	printf("Nhap thong tin server (port): ");
	int port;  cin >> port;
	printf("source file gui:");
	string sendFile; cin >> sendFile;
	printf("source file nhan: ");
	string recvFile; cin >> recvFile;
	//khai bao dia chi server
	SOCKADDR_IN addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = htonl(INADDR_ANY); //bat ki
	addr.sin_port = htons(port);

	bind(listener, (SOCKADDR*)&addr, sizeof(addr)); // gan socket voi cau truc da chi
	listen(listener, 5); // chuyen sang trang thai cho ket noi

	SOCKET client = accept(listener, NULL, NULL);
	//doc file va gui cho client
	char bufSend[2048];
	fread(bufSend, 1, sizeof(bufSend), sendFile);
	send(client, bufSend, strlen(bufSend), 0);

	//nhan data tu client va ghi vao file
	char bufRecv[2048];
	int ret, sum;
	FILE* fWrite = fopen(recvFile, "wb");
	while (1) {
		ret = recv(client, bufRecv, sizeof(bufRecv), 0);
		if (ret <= 0) break;

		fwrite(bufRecv, 1, ret, fWrite);
		sum += ret;
	}

	printf("Finished");
	fclose(f);

	closesocket(client);
	closesocket(listener);
	WSACleanup();



}