// Client has sent us a message
public async Task SendMessage(string messagePacket)
{
if (string.IsNullOrEmpty(messagePacket))
{
return;
}
var message = await messageService.NewMessageFromPacket(messagePacket);
if (message == null)
{
return; // If our message creation failed
}
var messageBlob = JsonConvert.SerializeObject(message);
await Clients.Group(ChatHubHelper.GroupFor(messagePacket)).ReceiveMessage(messageBlob);
}
// Client has requested all messages for this channel
public async Task GetChannelMessages(string channelInfoPacket)
{
ChannelInfoPacket packet;
User currentUser;
Channel channel;
try
{
packet = JsonConvert.DeserializeObject <ChannelInfoPacket>(channelInfoPacket);
currentUser = await userService.ExistingUser(packet.UserCookie);
channel = await channelService.GetChannel(packet.Channel);
}
catch
{
return; // Error parsing the packet
}
if (currentUser == null)
{
return;
}
// Send channel messages to the validated user
var messages = await channelService.MessagesFor(channel);
var channelMessages = JsonConvert.SerializeObject(messages);
await Clients.Caller.ReceiveAllMessages(channelMessages);
// Add the user to the relevant signalR group
await Groups.AddToGroupAsync(Context.ConnectionId, ChatHubHelper.GroupFor(channelInfoPacket));
// Notify group they joined
var notification = currentUser.Name + " has joined!";
await Clients.Group(ChatHubHelper.GroupFor(channelInfoPacket)).Notification(notification);
}