소켓 - 에코서버프로그램에서 이해가 안되는 부분이있는데요...

	while (1) {
		memset(&ClientSockInfo, 0, sizeof(struct sockaddr_in));
		SockLen = sizeof(struct sockaddr_in);
		ClientSocket = accept(EndpointSocket, (struct sockaddr *)&ClientSockInfo, &SockLen);
 
		if (ClientSocket == INVALID_SOCKET) {
			printf("Accept Error\r\n");
			closesocket(EndpointSocket);
			WSACleanup();
			return 1;
		}
		printf("Accept Client\r\n");
		Readn = recv(ClientSocket, ReadBuffer, MAX_PACKETLEN, 0);
 
		if (Readn > 0) {
			Writen = send(ClientSocket, ReadBuffer, Readn, 0);
		}
		else {
			printf("Read Error\r\n");
		}
		closesocket(ClientSocket);
	}