public static async Task<ConnectionChans> Connect(Settings settings, ChanStore store, Func<string, Uri> p) {
var broadcast = p(settings.ChanBroadcastName); //channel name
var rT = store.GetReceiverAsync<Message>(broadcast);
var sT = store.GetSenderAsync<Message>(broadcast);
var k = Chan.Chan.Combine(await rT, await sT);
return new ConnectionChans{ Broadcast = k, BsSender = await sT, BsReceiver = await rT };
}
public ChatClient(Settings settings, ChanStore store, Connector connector) {
this.settings = settings;
this.connector = connector;
this.store = store;
ClientName = settings.ClientDefaultName;
}
static void StartGui(Connector conn, Settings settings)
{
Gui.Start(x => {
//if changes UI: have to use this
Action<string, Action<CmdArg>> xRegister = (cmd, a) => conn.Register(cmd, x.InSTAThread(a));
var help = @"Help:
Type (messages) to line at bottom of window.
Commands start with ':'.
All messages are trimmed by default, so to write ':-)' just write ' :-)'.
Use tab for command completion.
:chat # show message board
:server.start <port> # starts server and DOES NOT connect to it
:server.stop
:ip # get local IP address(es)
:wsdl # open server with wsdl description of service to access chans
:connect <host:port> # connect to a server; default port is " + settings.DefaultServerPort + @"
:disconnect # closes client
:host <port> # :server.start, :connect
:join <host> <name> # :connect <host>, :name <name>
:name <new name> # get or set; 'anon' by default
:down, :d # scroll to end of message board
:exit, :quit
:help, :h # show this help
:send <msg> # send msg as it is; even just whitespace / nothing...
:text <theText> # ~= :send <trim($theText)>
# wouldn't send nothing
if line doesn't start with ':': gets translated to: ':text <$line>'
";
xRegister(Cmd.Help, _ => x.SwitchToHelp(help));
xRegister(Cmd.Chat, _ => x.SwitchToChat());
xRegister(Cmd.Exit, _ => x.Exit());
xRegister(Cmd.ScrollDown, _ => x.ScrollToBottom());
xRegister(Cmd.NotifyError, a => x.ShowError(a.Source, a.Text));
xRegister(Cmd.NotifySystem, a => x.ShowNotifySystem(a.Source, a.Text));
xRegister(Cmd.ReceivedMsg, a => x.ShowMessage(a.Source, a.Text));
xRegister(Cmd.CmdAccepted, a => x.ClearCmdLineIfSame(a));
xRegister(Cmd.CompletionResponse, a => x.PushCompletion(a, a.Source));
conn.Alias("d", Cmd.ScrollDown);
conn.Alias("h", Cmd.Help);
conn.Alias("quit", Cmd.Exit);
conn.Run(Cmd.Help);
x.Command += line => conn.RunOrDefault(Cmd.CmdParseRun, line);
x.CompletionRequest += line => conn.RunOrDefault(Cmd.CompletionRequest, line);
x.BoardChanged += () => conn.Run(Cmd.Chat);
conn.RunOrDefault(Cmd.AfterGuiLoaded);
});
}
//originally: only run when needed to start server (the first time)
// - didn't work well; now every server has it's own ChanStore (WCF reasons, mainly)
//Unit so it can be used in Lazy
static Unit InitServer(Settings settings, ChanStore store, Connector conn)
{
//simple default config for now
var dfltCfg = NetChanConfig.MakeDefault<Message>();
var bcFailT = store.CreateNetChan(settings.ChanBroadcastName, dfltCfg, ChanDistributionType.Broadcast);
var bcUri = new Uri("chan:" + settings.ChanBroadcastName);
var bcr = store.GetReceiver<Message>(bcUri);
var bcs = store.GetSender<Message>(bcUri);
var bcPipeT = bcr.Pipe(bcs); //connect server side of pipe: return back to everyone
bcFailT.PipeEx(conn, "server: bc chan");
bcPipeT.PipeEx(conn, "server: bc pipe");
bcr.AfterClosed().PipeEx(conn, "server: bc receiver"); //I don't think these can ever fail...
bcs.AfterClosed().PipeEx(conn, "server: bc sender");
return null;
}
static void Init(Settings settings, Connector conn, Action<Connector, ChanStore> initExtra)
{
var store = new ChanStore();
var client = new ChatClient(settings, store, conn);
//simple default config for now
var dfltCfg = NetChanConfig.MakeDefault<Message>();
//client
var rFailT = store.PrepareClientReceiverForType(dfltCfg);
var sFailT = store.PrepareClientSenderForType(dfltCfg);
rFailT.PipeEx(conn, "store: receiver cache");
sFailT.PipeEx(conn, "store: sender cache");
conn.Register(Cmd.Send, client.BroadcastMessage);
conn.Register(Cmd.Connect, client.Connect);
conn.Register(Cmd.Disconnect, _ => client.Disconnect());
conn.Register(Cmd.Join, a => {
var args = (a.Text ?? "").Split(new []{ ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (args.Length > 2)
conn.RunError("requires 1 or 2 arguments <?host:port> <name>".ArgSrc("join"));
else ((Func<Func<string, string, bool>, bool>) (cont => { //I could use ifs; this is more obvious to me...
switch (args.Length) { //host, name
case 1:
return cont(null, args[0]);
case 2:
return cont(args[0], args[1]);
default:
return cont(null, null);
} // apply args^ to connect and (name if != null)
}))((host, name) => conn.RunOrDefault(Cmd.Connect, host) && (name != null) && conn.RunOrDefault(Cmd.Name, name));
});
//server
//it reregisters it's commands if started (to ones created in start fn)
Action<CmdArg> serverStartOff = null; //~ referenced from itself
Action<CmdArg> serverStopOff = _ => conn.RunError("not running".ArgSrc("server"));
serverStartOff = a => {
var portS = a.Text;
int port;
if (!int.TryParse(portS, out port)) {
//couldn't parse: try default
if (settings.DefaultServerPort == -1) {
conn.RunError("requires port (default not allowed)".ArgSrc(Cmd.ServerStart + " " + portS));
return;
}
port = settings.DefaultServerPort;
}
//port OK: try creating and starting server:
try {
var serverStore = new ChanStore();
InitServer(settings, serverStore, conn);
serverStore.StartServer(port);
//created fine: reregister
conn.Reregister(Cmd.ServerStart, _ => conn.RunError(("already running (port: " + port + ")").ArgSrc("server")));
conn.Reregister(Cmd.ServerStop, _ => {
try {
serverStore.StopServer();//stop listening for new
//kill stuff in ChanStore: this will force shut the open channels and close clients
serverStore.CloseAll().PipeEx(conn, "server.stop (in clear)");
conn.RunNotifySystem("stopped".ArgSrc("server"));
} catch (Exception ex) {
ex.PipeEx(conn, "server.stop");
} finally {
conn.Reregister(Cmd.ServerStop, serverStopOff); //use original handlers again
conn.Reregister(Cmd.ServerStart, serverStartOff);
}
});
conn.RunNotifySystem("started".ArgSrc("server"));
} catch (Exception ex) {
ex.PipeEx(conn, Cmd.ServerStart + " " + port);
}
};
conn.Register(Cmd.ServerStart, serverStartOff);
conn.Register(Cmd.ServerStop, serverStopOff);
conn.Register(Cmd.Host, async port => {
try {
if (string.IsNullOrWhiteSpace(port)) {
if (settings.DefaultServerPort == -1)
throw new ArgumentException("requires port (default not allowed)");
port = settings.DefaultServerPort.ToString();
}
if (await conn.RunOrDefaultAsync(Cmd.ServerStart, port)) {
//~ok: problem: this is run after known, whether Cmd.Server exists, not after server started
//: connect waits until started; ok
// - no it doesn't: it cannot: it's elsewhere...
await Task.Delay(50); //wait a little instead
await conn.RunOrDefaultAsync(Cmd.Connect, "localhost:" + port);
}
} catch (Exception ex) {
ex.PipeEx(conn, Cmd.Host + " " + port);
}
});
//translate text to send
conn.Register(Cmd.Text, a => {
if (!string.IsNullOrWhiteSpace(a))
conn.RunOrDefault(Cmd.Send, a.Text.Trim());
});
//get/change name
conn.Register(Cmd.Name, a => {
var arg = a.Text;
if (string.IsNullOrWhiteSpace(arg)) {
//get name
conn.RunNotifySystem(client.ClientName.ArgSrc("clinet name"));
} else {
//set name
client.ClientName = arg;
}
});
//parse line into command and run it
conn.Register(Cmd.CmdParseRun, a => {
var ok = Cmd.ParseCommandInto(a, (cmd, arg) => conn.RunOrDefault(cmd ?? Cmd.NoCommand, arg));
if (ok)
conn.RunOrDefault(Cmd.CmdAccepted, a);
});
//command completion
conn.Register(Cmd.CompletionRequest, a => {
string arg = a;
if (string.IsNullOrWhiteSpace(arg) || arg[0] != Settings.UserCommandStart || arg.Contains(' '))
//for now: only completion of main command is suppoerted
return;
arg = arg.Substring(1); //remove commandStart char (:)
var possibles = conn.Keys.Where(k => k.StartsWith(arg)).ToArray();
if (possibles.Length == 0)
//no option to help with
return;
//if more then 1: find longest common prefix (starting at already known: len of arg
//if 1: append ' ' as it is both useful and shows the cmd is complete
string completedCmd = possibles.Length == 1 ? possibles[0] + ' '
: longestCommonPrefix(possibles, arg.Length);
conn.RunOrDefault(Cmd.CompletionResponse, (Settings.UserCommandStart + completedCmd).ArgSrc(a));
});
conn.Reregister(Cmd.AfterGuiLoaded, _ => {
initExtra(conn, store);
//in AfterGuiLoaded because Gui registers Exit through Add, not Merge
conn.Coregister(Cmd.Exit, __ => {
//dirty way of making sure every WCF server is cosed, so the app doesn't hang after GUI thread finished
conn.Reregister(Cmd.NotifyError, err => Console.Error.WriteLine(string.Format("{0}:! {1}", err.Source, err.Text)));
conn.Reregister(Cmd.NotifySystem, err => Console.WriteLine(string.Format("{0}:: {1}", err.Source, err.Text)));
conn.RunOrDefault(Cmd.Disconnect); //this is probaly not necesary, but why not...
conn.RunOrDefault(Cmd.ServerStop);
conn.RunOrDefault(Cmd.WsdlStop);
});
});
conn.Register(Cmd.Wsdl, a => {
int port;
if (!int.TryParse(a, out port)/*try port from argument*/
&& (port = settings.DefaultWsdlPort) < 0/*try default; if (<0):*/
&& conn.RunError("default port not allowed".ArgSrc(Cmd.Wsdl)))
return;
try {
var s = new ChanStore(port);
s.StartServer(port);
conn.RunNotifySystem(string.Format("running :{0}/ChanStore", port).ArgSrc(Cmd.Wsdl));
conn.Register(Cmd.WsdlStop, _ => {
s.StopServer();
conn.Reregister(Cmd.WsdlStop, null);
conn.RunNotifySystem("stopped".ArgSrc(Cmd.Wsdl));
});
} catch (Exception ex) {
ex.PipeEx(conn, Cmd.Wsdl);
}
});
conn.Register(Cmd.Ip, _ => conn.RunOrDefault(Cmd.NotifySystem,
string.Join<IPAddress>(", ", Dns.GetHostEntry("").AddressList).ArgSrc(Cmd.Ip)));
#if DEBUG
conn.Register("test", a => {
conn.Run(Cmd.NotifyError, "test error".ArgSrc("err source"));
conn.Run(Cmd.NotifyError, "test error without source");
conn.Run(Cmd.NotifySystem, "test system".ArgSrc("system source"));
conn.Run(Cmd.NotifySystem, "test system without source");
conn.Run(Cmd.ReceivedMsg, "test msg".ArgSrc("msg source"));
conn.Run(Cmd.ReceivedMsg, "test msg without source");
conn.Run(Cmd.Help);
conn.Run(Cmd.Chat);
});
#endif
}
public static void Start(Settings settings, Action<Connector, ChanStore> initExtra)
{
var conn = new Connector();
Init(settings, conn, initExtra);
StartGui(conn, settings);
}
