3-clientinfo

#include <stdio.h>
#include<iostream>

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <winsock2.h>
#include <ws2tcpip.h>

#pragma comment(lib, "ws2_32")

using namespace std;

char command[50];
char domain[20];
int port;

int main()
{
	cin >> command;
	cin >> domain;
	cin >> port;

	//Khoi tao thu vien
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//Tao socket cho client
	SOCKET client = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

	// Phan giai ten mien
	addrinfo* info;
	SOCKADDR_IN addr;
	int ret = getaddrinfo(domain, "http", NULL, &info);
	if (ret != 0)
	{
		printf("getaddrinfo() failed\n");
		return 1;
	}

	memcpy(&addr, info->ai_addr, info->ai_addrlen);

	system("pause");
	//Ket noi client voi server
	ret = connect(client, (SOCKADDR*)&addr, sizeof(addr));
	if (ret == SOCKET_ERROR)
	{
		ret = WSAGetLastError();
		printf("connect() failed: error code %d\n", ret);
		return 1;
	}

	const char *buf = "Thong tin o cung \r\n C:\\ 100GB \r\n D:\\ 128GB";
	
	//Gui len server
	send(client, buf, strlen(buf), 0);
	closesocket(client);
	WSACleanup();
}

4-serverinfo

#include <stdio.h>
#include <iostream>
#include <winsock2.h>

using namespace std;

#pragma comment(lib, "ws2_32")

char command[50];
int port;

int main()
{
	cin >> command >> port;

    WSADATA wsa;
    WSAStartup(MAKEWORD(2, 2), &wsa);

    SOCKET listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    SOCKADDR_IN addr;
    addr.sin_family = AF_INET;
    addr.sin_addr.s_addr = htonl(INADDR_ANY);
    addr.sin_port = htons(port);

    bind(listener, (SOCKADDR*)&addr, sizeof(addr));
    listen(listener, 5);

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

    char buf[256];
    int ret = recv(client, buf, sizeof(buf), 0);
    if (ret <= 0)
    {
        printf("recv() failed\n");
        return 1;
    }

    buf[ret] = 0;
    printf("Received: %s\n", buf);

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

Bai1-TCPclient.cpp

#include <stdio.h>
#include<iostream>

#define _WINSOCK_DEPRECATED_NO_WARNINGS
#include <winsock2.h>

#pragma comment(lib, "ws2_32")

using namespace std;

char command[100];
char ip[20];
int port;

int main()
{
	int i;
	int j = 0;
	cin >> command;
	cin >> ip;
	cin >> port;

	//Khoi tao thu vien
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//Tao socket cho client
	SOCKET client = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

	//Gan dia chi va cong cho server
	SOCKADDR_IN addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = inet_addr(ip);
	addr.sin_port = htons(port);

	//Ket noi client voi server
	int ret = connect(client, (SOCKADDR*)&addr, sizeof(addr));
	if (ret == SOCKET_ERROR)
	{
		ret = WSAGetLastError();
		printf("connect() failed: error code %d\n", ret);
		return 1;
	}
	char buf[256];
	cout << "Nhap du lieu tu ban phim" << endl;
	cin >> buf;

	//Gui len server
	send(client, buf, strlen(buf), 0);

	closesocket(client);
	WSACleanup();
}

Bai2-TCPserver.cpp

#include <stdio.h>
#include<iostream>
#include<string>

using namespace std;

#include <winsock2.h>

#pragma comment(lib, "ws2_32")
#pragma warning(disable:4996)

char command[50];
int port;
string fileSentName;
string fileRecvName;

int main()
{
	cin >> command;
	cin >> port;
	cin >> fileSentName;
	cin >> fileRecvName;

	//Khoi tao thu vien
	WSADATA wsa;
	WSAStartup(MAKEWORD(2, 2), &wsa);

	//tao socket listener cho server
	SOCKET listener = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

	SOCKADDR_IN addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = htonl(INADDR_ANY);
	addr.sin_port = htons(port);

	//gan dia chi va cong cho socket
	bind(listener, (SOCKADDR*)&addr, sizeof(addr));
	listen(listener, 5);

	//tao socket cho ket noi cua client voi server
	SOCKET client = accept(listener, NULL, NULL);

	fileSentName = "D:\\Study\\20192\\Network Programming\\" + fileSentName;
	const char* path = fileSentName.c_str();
	// Doc du lieu tu file va gui sang server
	 FILE*f = fopen(path, "rb");
	char bufSent[2048];
	int ret,sum = 0;
	while (1)
	{
		ret = fread(bufSent, 1, sizeof(bufSent), f);
		if (ret <= 0)
			break;
		send(client, bufSent, ret, 0);
		sum += ret;
		cout << "Da gui " << sum << " bytes sang client"<< endl;
	}
	//ket thuc gui du lieu
	cout << "Finished sent!!!";
	fclose(f);

	char buf[2048];
	fileRecvName = "D:\\Study\\20192\\Network Programming\\" + fileRecvName;
	path = fileRecvName.c_str();
	f = fopen(path, "wb");

	//nhan du lieu tu client va ghi vao file
	while (1)
	{
		ret = recv(client, buf, sizeof(buf), 0);
		if (ret <= 0)
			break;
		fwrite(buf, 1, ret, f);
		sum += ret;
		cout << "Nhan duoc " << sum << " bytes"<<endl;
	}

	//ket thuc nhan du lieu
	cout <<"Finished recv!!!";
	fclose(f);
	closesocket(client);
	closesocket(listener);
	WSACleanup();
}