From: Christian Heller Date: Thu, 12 Nov 2020 00:35:38 +0000 (+0100) Subject: Improve client connection failire / reconnect handling. X-Git-Url: https://plomlompom.com/repos/%7B%7Bdb.prefix%7D%7D/%7B%7B%20web_path%20%7D%7D/decks/blog?a=commitdiff_plain;h=43d0cd09dd33ce5452ee449c7e62f064098cced2;p=plomrogue2 Improve client connection failire / reconnect handling. --- diff --git a/rogue_chat_curses.py b/rogue_chat_curses.py index 33b2750..203f3ea 100755 --- a/rogue_chat_curses.py +++ b/rogue_chat_curses.py @@ -2,6 +2,7 @@ import curses import queue import threading +import time from plomrogue.game import GameBase from plomrogue.parser import Parser from plomrogue.mapping import YX, MapGeometrySquare, MapGeometryHex @@ -257,11 +258,47 @@ class TUI: for k in keys_conf: self.keys[k] = keys_conf[k] self.show_help = False + self.disconnected = True + self.force_instant_connect = True + self.input_lines = [] curses.wrapper(self.loop) def flash(self): curses.flash() + def connect(self): + + def handle_recv(msg): + if msg == 'BYE': + self.socket.close() + else: + self.queue.put(msg) + + self.log_msg('@ attempting connect') + socket_client_class = PlomSocketClient + if self.host.startswith('ws://') or self.host.startswith('wss://'): + socket_client_class = WebSocketClient + try: + self.socket = socket_client_class(handle_recv, self.host) + self.socket_thread = threading.Thread(target=self.socket.run) + self.socket_thread.start() + self.disconnected = False + self.socket.send('TASKS') + self.switch_mode('login') + except ConnectionRefusedError: + self.log_msg('@ server connect failure') + self.disconnected = True + self.switch_mode('waiting_for_server') + self.do_refresh = True + + def reconnect(self): + self.log_msg('@ attempting reconnect') + self.send('QUIT') + time.sleep(0.1) # FIXME necessitated by some some strange SSL race + # conditions with ws4py, find out what exactly + self.switch_mode('waiting_for_server') + self.connect() + def send(self, msg): try: if hasattr(self.socket, 'plom_closed') and self.socket.plom_closed: @@ -269,6 +306,8 @@ class TUI: self.socket.send(msg) except (BrokenPipeError, BrokenSocketConnection): self.log_msg('@ server disconnected :(') + self.disconnected = True + self.force_instant_connect = True self.do_refresh = True def log_msg(self, msg): @@ -310,7 +349,6 @@ class TUI: self.restore_input_values() def loop(self, stdscr): - import time import datetime def safe_addstr(y, x, line): @@ -324,38 +362,6 @@ class TUI: stdscr.insstr(y, self.size.x - 2, ' ') stdscr.addstr(y, x, cut) - def connect(): - - def handle_recv(msg): - if msg == 'BYE': - self.socket.close() - else: - self.queue.put(msg) - - socket_client_class = PlomSocketClient - if self.host.startswith('ws://') or self.host.startswith('wss://'): - socket_client_class = WebSocketClient - while True: - try: - self.socket = socket_client_class(handle_recv, self.host) - self.socket_thread = threading.Thread(target=self.socket.run) - self.socket_thread.start() - self.socket.send('TASKS') - self.switch_mode('login') - return - except ConnectionRefusedError: - self.log_msg('@ server connect failure, trying again …') - draw_screen() - stdscr.refresh() - time.sleep(1) - - def reconnect(): - self.send('QUIT') - time.sleep(0.1) # FIXME necessitated by some some strange SSL race - # conditions with ws4py, find out what exactly - self.switch_mode('waiting_for_server') - connect() - def handle_input(msg): command, args = self.parser.parse(msg) command(*args) @@ -559,13 +565,18 @@ class TUI: self.explorer = YX(0, 0) self.input_ = '' input_prompt = '> ' - connect() - last_ping = datetime.datetime.now() - interval = datetime.timedelta(seconds=30) + interval = datetime.timedelta(seconds=5) + last_ping = datetime.datetime.now() - interval while True: + if self.disconnected and self.force_instant_connect: + self.force_instant_connect = False + self.connect() now = datetime.datetime.now() if now - last_ping > interval: - self.send('PING') + if self.disconnected: + self.connect() + else: + self.send('PING') last_ping = now if self.do_refresh: draw_screen() @@ -613,8 +624,6 @@ class TUI: self.switch_mode('play') elif self.input_ in {'/' + self.keys['switch_to_study'], '/study'}: self.switch_mode('study') - elif self.input_ == '/reconnect': - reconnect() elif self.input_.startswith('/nick'): tokens = self.input_.split(maxsplit=1) if len(tokens) == 2: @@ -650,7 +659,7 @@ class TUI: elif self.mode == self.mode_teleport and key == '\n': if self.input_ == 'YES!': self.host = self.teleport_target_host - reconnect() + self.reconnect() else: self.log_msg('@ teleport aborted') self.switch_mode('play') diff --git a/rogue_chat_nocanvas_monochrome.html b/rogue_chat_nocanvas_monochrome.html index e5bef1a..bc30bde 100644 --- a/rogue_chat_nocanvas_monochrome.html +++ b/rogue_chat_nocanvas_monochrome.html @@ -175,20 +175,18 @@ let server = { this.url = url; this.websocket = new WebSocket(this.url); this.websocket.onopen = function(event) { - window.setInterval(function() { server.send(['PING']) }, 30000); - this.send('TASKS'); + server.connected = true; + server.send(['TASKS']); tui.log_msg("@ server connected! :)"); tui.switch_mode(mode_login); }; this.websocket.onclose = function(event) { + server.connected = false; + tui.switch_mode(mode_waiting_for_server); tui.log_msg("@ server disconnected :("); - tui.log_msg("@ hint: try the '/reconnect' command"); }; this.websocket.onmessage = this.handle_event; }, - reconnect: function() { - this.reconnect_to(this.url); - }, reconnect_to: function(url) { this.websocket.close(); this.init(url); @@ -253,7 +251,7 @@ let server = { } else if (tokens[0] === 'GAME_ERROR') { tui.log_msg('? game error: ' + tokens[1]); } else if (tokens[0] === 'PONG') { - console.log('PONG'); + ; } else { tui.log_msg('? unhandled input: ' + event.data); } @@ -786,12 +784,6 @@ tui.inputEl.addEventListener('keydown', (event) => { } else { tui.log_msg('? need message target and message'); } - } else if (tokens[0].slice(1) == 'reconnect') { - if (tokens.length > 1) { - server.reconnect_to(tokens[1]); - } else { - server.reconnect(); - } } else { tui.log_msg('? unknown command'); } @@ -876,5 +868,13 @@ window.setInterval(function() { tui.inputEl.focus(); } }, 100); +window.setInterval(function() { + if (server.connected) { + server.send(['PING']); + } else { + server.reconnect_to(server.url); + tui.log_msg('@ attempting reconnect …') + } +}, 5000);