/// <summary>
/// 持久化学生机信息
/// </summary>
/// <param name="client"></param>
public void AddStudent(StudentClientSummary client)
{
var teacherClient = TeacherClients.FirstOrDefault(p => p.TeacherCode == client.TeacherCode);
if (teacherClient.StudentClients == null)
{
teacherClient.StudentClients = new List <StudentClientSummary>();
}
teacherClient.StudentClients.Add(client);
}
/// <summary>
/// 学生机注册
/// </summary>
/// <param name="registerInfo">注册信息</param>
/// <returns></returns>
public async Task RegisterStudent(RegisterCmdParams registerInfo)
{
if (registerInfo.Identity != IdentityType.Student)
{
throw new ArgumentException("注册信息 Identity 错误");
}
// 检查教师机连接是否正常
var teacher = _clientStorage.TeacherClients.FirstOrDefault(p => p.TeacherCode == registerInfo.TeacherCode);
if (teacher == null || !teacher.IsConnected)
{
var msg = $"教师机连接异常[code={registerInfo.TeacherCode}]！";
await Clients.Client(teacher.ConnectionId).ReceiveServerError(msg);
_logger.LogError(msg);
throw new Exception(msg);
}
var ip = Context.GetHttpContext().Connection.RemoteIpAddress.ToString();
var clientSummary = new StudentClientSummary
{
Identity = registerInfo.Identity,
ConnectionId = Context.ConnectionId,
IsConnected = true,
RemoteIpAddress = ip,
TeacherCode = registerInfo.TeacherCode,
};
// 保存学生机信息
_clientStorage.AddStudent(clientSummary);
// 将学生机加入对应的教师机分组
await Groups.AddToGroupAsync(Context.ConnectionId, clientSummary.TeacherCode);
// 通知教师机有学生机接入，保存消息记录
var receivers = new List <MessageReceiver>
{
new MessageReceiver()
{
ConnectionId = teacher.ConnectionId
}
};
var messageSummary = _messageHistory.SaveMessage(Context.ConnectionId, receivers, "ReceiveMessage", CommandType.StudentConnected, clientSummary);
clientSummary.MessageId = messageSummary.Id;
await Clients.Client(teacher.ConnectionId).ReceiveMessage(CommandType.StudentConnected, clientSummary);
// 通知学生机注册成功，保存消息记录
var receivers2 = new List <MessageReceiver>
{
new MessageReceiver()
{
ConnectionId = Context.ConnectionId
}
};
var messageSummary2 = _messageHistory.SaveMessage(Context.ConnectionId, receivers2, "RegisterSuccess", "RegisterSuccess", registerInfo);
clientSummary.MessageId = messageSummary2.Id;
await Clients.Caller.RegisterSuccess(clientSummary);
}