App-level keepalive

CHANGELOG.md

@@ -1,10 +1,17 @@
 # Changelog
 (This document uses YYYY-MM-DD)
 
-## [v2.4.2] - 2022-07-08
+## [v2.4.2] - 2022-08-14
+
+### Added
+ - Application-level connection checks:
+    - Send ping if we haven't received any data from the server in 30 seconds.
+    - Show S3RV3R NOT R3SPOND1NG if the server hasn't responded in 45 seconds. (15 seconds after ping)
+    - Close connection and try to reconnect if the server hasn't responded in 90 seconds. (60 seconds after ping)
 
 ### Fixed
  - Error when manually moving group.
+ - EOF on send not resulting in a disconnect.
 
 ## [v2.4.1] - 2022-07-05
 

irc.py

@@ -40,6 +40,7 @@ class PesterIRC(QtCore.QThread):
         QtCore.QThread.__init__(self)
         self.mainwindow = window
         self.config = config
+        self.unresponsive = False
         self.registeredIRC = False
         self.metadata_supported = False
         self.stopIRC = None
@@ -68,6 +69,7 @@ class PesterIRC(QtCore.QThread):
             res = True
             try:
                 PchumLog.debug("updateIRC()")
+                self.mainwindow.sincerecv = 0
                 res = self.updateIRC()
             except socket.timeout as se:
                 PchumLog.debug("timeout in thread %s" % (self))
@@ -340,7 +342,8 @@ class PesterIRC(QtCore.QThread):
     @QtCore.pyqtSlot()
     def pingServer(self):
         try:
-            self.cli.send("PING %s" % int(time.time()))
+            self.cli.send("PING :B33")
+            #self.cli.send("PING %s" % int(time.time()))
         except OSError as e:
             PchumLog.warning(e)
             self.setConnectionBroken()
@@ -537,6 +540,13 @@ class PesterHandler(DefaultCommandHandler):
                 self.parent.messageReceived.emit(handle, msg)
 
 
+    def pong(self, *args):
+        # source, server, token
+        #print("PONG", source, server, token)
+        #self.parent.mainwindow.lastrecv = time.time()
+        #print("PONG TIME: %s" % self.parent.mainwindow.lastpong)
+        pass
+            
     def welcome(self, server, nick, msg):
         self.parent.setConnected()
         #mychumhandle = self.mainwindow.profile().handle
@@ -839,7 +849,7 @@ class PesterHandler(DefaultCommandHandler):
         self.parent.userPresentUpdate.emit(handle, channel, "left")
         
     def ping(self, prefix, server):
-        self.parent.mainwindow.lastping = int(time.time())
+        #self.parent.mainwindow.lastping = time.time()
         self.client.send('PONG', server)
 
     def getMood(self, *chums):

oyoyo/client.py

@@ -180,10 +180,10 @@ class IRCClient:
                     pass
                 else:
                     #raise se
-                    _end = True  # This ok?
+                    self._end = True  # This ok?
             except AttributeError:
                 #raise se
-                _end = True  # This ok?
+                self._end = True  # This ok?
 
     def connect(self):
         """ initiates the connection to the server set in self.host:self.port 
@@ -222,6 +222,17 @@ class IRCClient:
             self.socket.setblocking(False)
         elif self.blocking:
             self.socket.setblocking(True)
+
+        #try:
+        #    self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
+        #    if hasattr(socket, "TCP_KEEPIDLE"):
+        #        self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 1)
+        #    if hasattr(socket, "TCP_KEEPINTVL"):
+        #        self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 1)
+        #    if hasattr(socket, "TCP_KEEPCNT"):
+        #        self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, 1)
+        #except Exception as e:
+        #    print(e)
         
         helpers.nick(self, self.nick)
         helpers.user(self, self.username, self.realname)

pesterchum.py

@@ -1500,8 +1500,8 @@ class PesterWindow(MovingWindow):
 
         self.pingtimer = QtCore.QTimer()
         self.pingtimer.timeout.connect(self.checkPing)
-        self.lastping = int(time.time())
+        self.sincerecv = 0 # Time since last recv
-        self.pingtimer.start(1000*90)
+        self.pingtimer.start(1000*15) # time in ms
 
         self.mychumhandleLabel.adjustSize() # Required so "CHUMHANDLE:" regardless of style-sheet.
         self.moodsLabel.adjustSize()        # Required so "MOOD:" regardless of style-sheet.
@@ -1545,10 +1545,36 @@ class PesterWindow(MovingWindow):
 
     @QtCore.pyqtSlot()
     def checkPing(self):
-        curtime = int(time.time())
+        '''Check if server is alive on app level,
-        if curtime - self.lastping > 600:
+        this function is called every 15sec'''
+        # Return without irc
+        if hasattr(self.parent, 'irc') == False:
+            return
+        
+        # Presume connection is dead after 90 seconds of silence.
+        if self.sincerecv >= 90:
+            self.disconnectIRC.emit()
+
+        # Show unresponsive if timing out
+        if self.sincerecv >= 45:
+            if self.parent.irc.unresponsive == False:
+                self.parent.irc.unresponsive = True
+                self.parent.showLoading(self.parent.widget,
+                                        "S3RV3R NOT R3SPOND1NG >:?")
+                self.show()
+                self.setFocus()
+        else:
+            self.parent.irc.unresponsive = False
+            if self.loadingscreen:
+                self.loadingscreen.done(QtWidgets.QDialog.DialogCode.Accepted)
+            
+        
+        # Send a ping if it's been 30 seconds since we've heard from the server.
+        if self.sincerecv >= 30:
             self.pingServer.emit()
 
+        self.sincerecv += 15 # Only updating every 10s is better for performance.
+
     def profile(self):
         return self.userprofile.chat
     def closeConversations(self, switch=False):
@@ -3972,7 +3998,9 @@ class MainProgram(QtCore.QObject):
             widget.loadingscreen.loadinglabel.setText(msg)
             widget.loadingscreen.rejected.connect(widget.app.quit)
             self.widget.loadingscreen.tryAgain.connect(self.tryAgain)
-            if hasattr(self, 'irc') and self.irc.registeredIRC:
+            if (hasattr(self, 'irc')
+                and self.irc.registeredIRC
+                and self.irc.unresponsive == False):
                 return
             if self.reconnectok:
                 widget.loadingscreen.showReconnect()