C++ Сокети (чат)

СЕРВЕР (але після закриття одного з клієнтів – інший отримує дивні повідомлення)

#pragma comment(lib, "ws2_32.lib")
#include <winsock2.h>
#include <iostream> 

#pragma warning(disable: 4996)

SOCKET Connections[100];
int Counter = 0;

void ClientHandler(int index) {
	char msg[256];
	while (true) {
		recv(Connections[index], msg, sizeof(msg), NULL);
		for (int i = 0; i < Counter; i++) {
			if (i == index) {
				continue;
			}

			send(Connections[i], msg, sizeof(msg), NULL);
		}
	}
}

int main(int argc, char* argv[]) {
	//WSAStartup
	WSAData wsaData;
	WORD DLLVersion = MAKEWORD(2, 1);
	if (WSAStartup(DLLVersion, &wsaData) != 0) {
		std::cout << "Error" << std::endl;
		exit(1);
	}

	SOCKADDR_IN addr;
	int sizeofaddr = sizeof(addr);
	addr.sin_addr.s_addr = inet_addr("127.0.0.1");
	addr.sin_port = htons(1111);
	addr.sin_family = AF_INET;

	SOCKET sListen = socket(AF_INET, SOCK_STREAM, NULL);
	bind(sListen, (SOCKADDR*)&addr, sizeof(addr));
	listen(sListen, SOMAXCONN);

	SOCKET newConnection;
	for (int i = 0; i < 100; i++) {
		newConnection = accept(sListen, (SOCKADDR*)&addr, &sizeofaddr);

		if (newConnection == 0) {
			std::cout << "Error #2\n";
		}
		else {
			std::cout << "Client Connected!\n";
			char msg[256] = "Hello. It`s my first network program!";
			send(newConnection, msg, sizeof(msg), NULL);

			Connections[i] = newConnection;
			Counter++;
			CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)ClientHandler, (LPVOID)(i), NULL, NULL);
		}
	}


	system("pause");
	return 0;
}

---

КЛІЄНТ

#pragma comment(lib, "ws2_32.lib")
#include 
#include 

#pragma warning(disable: 4996)

SOCKET Connection;

void ClientHandler() {
	char msg[256];
	while (true) {
		recv(Connection, msg, sizeof(msg), NULL);
		std::cout << msg << std::endl;
	}
}

int main(int argc, char* argv[]) {
	//WSAStartup
	WSAData wsaData;
	WORD DLLVersion = MAKEWORD(2, 1);
	if (WSAStartup(DLLVersion, &wsaData) != 0) {
		std::cout << "Error" << std::endl;
		exit(1);
	}

	SOCKADDR_IN addr;
	int sizeofaddr = sizeof(addr);
	addr.sin_addr.s_addr = inet_addr("127.0.0.1");
	addr.sin_port = htons(1111);
	addr.sin_family = AF_INET;

	Connection = socket(AF_INET, SOCK_STREAM, NULL);
	if (connect(Connection, (SOCKADDR*)&addr, sizeof(addr)) != 0) {
		std::cout << "Error: failed connect to server.\n";
		return 1;
	}
	std::cout << "Connected!\n";

	CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)ClientHandler, NULL, NULL, NULL);

	char msg1[256];
	while (true) {
		std::cin.getline(msg1, sizeof(msg1));
		send(Connection, msg1, sizeof(msg1), NULL);
		Sleep(10);
	}

	system("pause");
	return 0;
}