Python uselect.POLLHUP Examples

The following are 9 code examples of uselect.POLLHUP(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module uselect , or try the search function .
Example #1
Source File: __init__.py    From uPyCam with Apache License 2.0 6 votes vote down vote up 
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        #log.debug("poll result: %s", res)
        # Remove "if res" workaround after
        # https://github.com/micropython/micropython/issues/2716 fixed.
        if res:
            for sock, ev in res:
                cb = self.objmap[id(sock)]
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    cb.pend_throw(None)
                    self.call_soon(cb)
Example #2
Source File: __init__.py    From micropython-samples with MIT License 6 votes vote down vote up 
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        #log.debug("poll result: %s", res)
        # Remove "if res" workaround after
        # https://github.com/micropython/micropython/issues/2716 fixed.
        if res:
            for sock, ev in res:
                cb = self.objmap[id(sock)]
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    cb.pend_throw(None)
                    self.call_soon(cb)
Example #3
Source File: __init__.py    From microdot with MIT License 6 votes vote down vote up 
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        #log.debug("poll result: %s", res)
        # Remove "if res" workaround after
        # https://github.com/micropython/micropython/issues/2716 fixed.
        if res:
            for sock, ev in res:
                cb = self.objmap[id(sock)]
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    cb.pend_throw(None)
                    self.call_soon(cb)
Example #4
Source File: ws_connection.py    From upy-websocket-server with MIT License 6 votes vote down vote up 
def read(self):
        poll_events = self.poll.poll(0)

        if not poll_events:
            return

        # Check the flag for connection hung up
        if poll_events[0][1] & uselect.POLLHUP:
            self.client_close = True

        msg_bytes = None
        try:
            msg_bytes = self.ws.read()
        except OSError:
            self.client_close = True

        # If no bytes => connection closed. See the link below.
        # http://stefan.buettcher.org/cs/conn_closed.html
        if not msg_bytes or self.client_close:
            raise ClientClosedError()

        return msg_bytes
Example #5
Source File: __init__.py    From pysmartnode with MIT License 6 votes vote down vote up 
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        # log.debug("poll result: %s", res)
        # Remove "if res" workaround after
        # https://github.com/micropython/micropython/issues/2716 fixed.
        if res:
            for sock, ev in res:
                cb = self.objmap[id(sock)]
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    cb.pend_throw(None)
                    self.call_soon(cb)
Example #6
Source File: __init__.py    From microhomie with MIT License 6 votes vote down vote up 
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        #log.debug("poll result: %s", res)
        # Remove "if res" workaround after
        # https://github.com/micropython/micropython/issues/2716 fixed.
        if res:
            for sock, ev in res:
                cb = self.objmap[id(sock)]
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    cb.pend_throw(None)
                    self.call_soon(cb)
Example #7
Source File: __init__.py    From micropython-async with MIT License 5 votes vote down vote up 
def add_reader(self, sock, cb, *args):
        if DEBUG and __debug__:
            log.debug("add_reader%s", (sock, cb, args))
        # HACK This should read
        # self._register(sock, select.POLLIN)
        # Temporary workround for https://github.com/micropython/micropython/issues/5172
        # The following is not compliant with POSIX or with the docs
        self._register(sock, select.POLLIN | select.POLLHUP | select.POLLERR)  # t35tB0t add HUP and ERR to force LWIP revents
        if args:
            self.rdobjmap[id(sock)] = (cb, args)
        else:
            self.rdobjmap[id(sock)] = cb
Example #8
Source File: __init__.py    From micropython-async with MIT License 5 votes vote down vote up 
def add_writer(self, sock, cb, *args):
        if DEBUG and __debug__:
            log.debug("add_writer%s", (sock, cb, args))
        # HACK Should read
        # self._register(sock, select.POLLOUT)
        # Temporary workround for https://github.com/micropython/micropython/issues/5172
        # The following is not compliant with POSIX or with the docs
        self._register(sock, select.POLLOUT | select.POLLHUP | select.POLLERR)  # t35tB0t add HUP and ERR to force LWIP revents
        if args:
            self.wrobjmap[id(sock)] = (cb, args)
        else:
            self.wrobjmap[id(sock)] = cb
Example #9
Source File: __init__.py    From micropython-async with MIT License 4 votes vote down vote up 
def wait(self, delay):
        if DEBUG and __debug__:
            log.debug("poll.wait(%d)", delay)
        # We need one-shot behavior (second arg of 1 to .poll())
        res = self.poller.ipoll(delay, 1)
        #log.debug("poll result: %s", res)
        for sock, ev in res:
            if ev & select.POLLOUT:
                cb = self.wrobjmap[id(sock)]
                if cb is None:
                    continue  # Not yet ready.
                # Invalidate objmap: can get adverse timing in fast_io whereby add_writer
                # is not called soon enough. Ignore poll events occurring before we are
                # ready to handle them.
                self.wrobjmap[id(sock)] = None
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_writer(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    prev = cb.pend_throw(None)  # Enable task to run.
                    #if isinstance(prev, Exception):
                        #print('Put back exception')
                        #cb.pend_throw(prev)
                    self._call_io(cb)  # Put coro onto runq (or ioq if one exists)
            if ev & select.POLLIN:
                cb = self.rdobjmap[id(sock)]
                if cb is None:
                    continue
                self.rdobjmap[id(sock)] = None
                if ev & (select.POLLHUP | select.POLLERR):
                    # These events are returned even if not requested, and
                    # are sticky, i.e. will be returned again and again.
                    # If the caller doesn't do proper error handling and
                    # unregister this sock, we'll busy-loop on it, so we
                    # as well can unregister it now "just in case".
                    self.remove_reader(sock)
                if DEBUG and __debug__:
                    log.debug("Calling IO callback: %r", cb)
                if isinstance(cb, tuple):
                    cb[0](*cb[1])
                else:
                    prev = cb.pend_throw(None)  # Enable task to run.
                    #if isinstance(prev, Exception):
                        #cb.pend_throw(prev)
                        #print('Put back exception')
                    self._call_io(cb)