//TcpServer_plus.exe

#include<stdio.h>
#include <Winsock2.h>
#include<WS2tcpip.h>
#pragma comment(lib,"ws2_32.lib")
#include<iostream>
using namespace std;
#include<windows.h>

SOCKADDR_IN cAddr = { 0 };
int len = sizeof cAddr;
SOCKET clientSocket[1001];//同時最多容納1000人在線

void chat(int n) {
	char buff[1024];
	int r;
	while (1) {
		r = recv(clientSocket[n], buff, 1023, NULL);
		if (r > 0) {
			buff[r] = 0;
			//cout << inet_ntoa(cAddr.sin_addr) << "發(fā)來的消息: " << buff;
			printf("%s發(fā)來的信息：%s\n", inet_ntop(AF_INET, (void*)&cAddr.sin_addr, buff, 1023), buff);
		}
	}
}

int main() {

	//1.確定協(xié)議版本
	WSADATA wsadata;
	WSAStartup(MAKEWORD(2, 2), &wsadata);//2.2版本
	if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wVersion) != 2) {
		cout << "確認版本失敗!\n" << endl;
		return -1;
	}
	cout << "確認版本成功!" << endl;

	//2.創(chuàng)建Socket
	SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//參數(shù)：協(xié)議類型、通信載體（字節(jié)流）、ip保護方式
	if (serverSocket == SOCKET_ERROR) {
		cout << "創(chuàng)建socket失敗!" << GetLastError() << endl;
		//9.清楚版本信息
		WSACleanup();
		return -1;
	}
	cout << "socket創(chuàng)建成功！" << endl;

	//3.創(chuàng)建服務(wù)器協(xié)議地址族
	//就是一個結(jié)構(gòu)體
	SOCKADDR_IN addr = { 0 };
	addr.sin_family = AF_INET;
	inet_pton(AF_INET, "192.168.31.100", (void*)&addr.sin_addr.S_un.S_addr);
	//addr.sin_addr.S_un.S_addr = inet_addr("192.168.31.100");//局域網(wǎng)地址
	addr.sin_port = htons(9999);//設(shè)置端口號 小端轉(zhuǎn)大端

	//4.綁定
	int r = bind(serverSocket, (struct sockaddr*)&addr, sizeof addr);
	if (r == -1) {
		cout << "綁定失敗!" << GetLastError() << endl;
		//8.關(guān)閉socket
		closesocket(serverSocket);
		//9.清除版本信息
		WSACleanup();
		return -1;
	}
	cout << "綁定成功！" << endl;

	//5.監(jiān)聽
	r = listen(serverSocket, 10);
	if (r == -1) {
		cout << "監(jiān)聽失敗!" << GetLastError() << endl;
		//8.關(guān)閉socket
		closesocket(serverSocket);
		//9.清除版本信息
		WSACleanup();
		return -1;
	}
	cout << "監(jiān)聽成功！" << endl;

	//6.等待客戶端連接（多客戶端連接）
	for (int i = 0; i < 1001; i++) {
		clientSocket[i] = accept(serverSocket, (sockaddr*)&cAddr, &len);//獲取客戶端的socket
			if (clientSocket[i] == SOCKET_ERROR) {
			cout << "客戶端連接失?。? << GetLastError() << endl;
			//關(guān)閉socket
			closesocket(serverSocket);
			//9.清楚版本信息
			WSACleanup();
			return -1;
		}
		cout << "客戶端連接成功！" << endl;


		//7 通信  多線程實現(xiàn) chat函數(shù)實現(xiàn)
		CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)chat, (LPVOID)i, NULL, NULL);//多線程實現(xiàn)
	}
		

	//8.關(guān)閉socket
	closesocket(serverSocket);

	//9.清理協(xié)議版本信息
	WSACleanup();

	while (1);//停頓
	return 0;
}

//TcpClient.exe

#include<stdio.h>
#include <Winsock2.h>
#include<WS2tcpip.h>
#pragma comment(lib,"ws2_32.lib")
#include<iostream>
using namespace std;
#include<windows.h>

int main() {

	//1.確定協(xié)議版本
	WSADATA wsadata;
	WSAStartup(MAKEWORD(2, 2), &wsadata);//2.2版本
	if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wVersion) != 2) {
		cout << "確認版本失敗!\n" << endl;
		return -1;
	}
	cout << "確認版本成功!" << endl;

	//2.創(chuàng)建Socket
	SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//參數(shù)：協(xié)議類型、通信載體（字節(jié)流）、ip保護方式
	if (clientSocket == SOCKET_ERROR) {
		cout << "創(chuàng)建socket失敗!" << GetLastError() << endl;
		//9.清楚版本信息
		WSACleanup();
		return -1;
	}
	cout << "socket創(chuàng)建成功！" << endl;

	//3.獲取服務(wù)器協(xié)議地址族
	//就是一個結(jié)構(gòu)體
	SOCKADDR_IN addr = { 0 };
	addr.sin_family = AF_INET;
	inet_pton(AF_INET, "192.168.31.100", (void*)&addr.sin_addr.S_un.S_addr);
	//addr.sin_addr.S_un.S_addr = inet_addr("192.168.31.100");//局域網(wǎng)地址
	addr.sin_port = htons(9999);//設(shè)置端口號 小端轉(zhuǎn)大端

	//4.連接服務(wù)器
	int r = connect(clientSocket, (sockaddr*)&addr,sizeof addr);
	if (r == -1) {
		cout << "連接服務(wù)器失?。? << GetLastError() << endl;
		//6.關(guān)閉socket
		closesocket(clientSocket);
		//7 清理版本信息
		WSACleanup();
		return -1;
	}
	cout << "服務(wù)器連接成功!" << endl;

	//5.通信
	char buff[1024];
	while (1) {
		cin >> buff;//用戶輸入信息
		send(clientSocket, buff, strlen(buff), NULL);//發(fā)送信息


	}

	//6.關(guān)閉socket
	closesocket(clientSocket);

	//7.清理協(xié)議版本信息
	WSACleanup();

	while (1);//停頓
	return 0;
}