Python socket.close() Examples

def respond(self):
        """Process the current request."""
        response = self.req.server.wsgi_app(self.env, self.start_response)
        try:
            for chunk in response:
                # "The start_response callable must not actually transmit
                # the response headers. Instead, it must store them for the
                # server or gateway to transmit only after the first
                # iteration of the application return value that yields
                # a NON-EMPTY string, or upon the application's first
                # invocation of the write() callable." (PEP 333)
                if chunk:
                    if isinstance(chunk, unicodestr):
                        chunk = chunk.encode('ISO-8859-1')
                    self.write(chunk)
        finally:
            if hasattr(response, "close"):
                response.close() 

def close(self):
        """Close the socket underlying this connection."""
        self.rfile.close()

        if not self.linger:
            # Python's socket module does NOT call close on the kernel socket
            # when you call socket.close(). We do so manually here because we
            # want this server to send a FIN TCP segment immediately. Note this
            # must be called *before* calling socket.close(), because the latter
            # drops its reference to the kernel socket.
            if hasattr(self.socket, '_sock'):
                self.socket._sock.close()
            self.socket.close()
        else:
            # On the other hand, sometimes we want to hang around for a bit
            # to make sure the client has a chance to read our entire
            # response. Skipping the close() calls here delays the FIN
            # packet until the socket object is garbage-collected later.
            # Someday, perhaps, we'll do the full lingering_close that
            # Apache does, but not today.
            pass 

def stop(self):
		self._stop = True

		if self.threads:
			for t in self.threads:
				t.stop()
		
		# not so nice solution to get rid of the block of listen()
		# unfortunately close() does not help on the block
		try:
			server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
			serverbind = self.config.get("Global", "serverbind")
			if serverbind == "0.0.0.0":
				# windows does not like to connect to 0.0.0.0
				serverbind = "127.0.0.1"

			server_socket.connect((serverbind, int(self.config.get(self.get_module_configname(), "serverport"))))
		except:
			pass

		return 

def run(self):
        self.server.stats['Worker Threads'][self.getName()] = self.stats
        try:
            self.ready = True
            while True:
                conn = self.server.requests.get()
                if conn is _SHUTDOWNREQUEST:
                    return
                
                self.conn = conn
                if self.server.stats['Enabled']:
                    self.start_time = time.time()
                try:
                    conn.communicate()
                finally:
                    conn.close()
                    if self.server.stats['Enabled']:
                        self.requests_seen += self.conn.requests_seen
                        self.bytes_read += self.conn.rfile.bytes_read
                        self.bytes_written += self.conn.wfile.bytes_written
                        self.work_time += time.time() - self.start_time
                        self.start_time = None
                    self.conn = None
        except (KeyboardInterrupt, SystemExit), exc:
            self.server.interrupt = exc 

def respond(self):
        response = self.req.server.wsgi_app(self.env, self.start_response)
        try:
            for chunk in response:
                # "The start_response callable must not actually transmit
                # the response headers. Instead, it must store them for the
                # server or gateway to transmit only after the first
                # iteration of the application return value that yields
                # a NON-EMPTY string, or upon the application's first
                # invocation of the write() callable." (PEP 333)
                if chunk:
                    if isinstance(chunk, unicode):
                        chunk = chunk.encode('ISO-8859-1')
                    self.write(chunk)
        finally:
            if hasattr(response, "close"):
                response.close() 

def stop(self):
		self._stop = True

		if self.threads:
			for t in self.threads:
				t.stop()
		
		# not so nice solution to get rid of the block of listen()
		# unfortunately close() does not help on the block
		try:
			server_socket = self.sctp.sctpsocket_tcp(socket.AF_INET)
			if self.config.get("Global", "serverbind") == "0.0.0.0":
				server_socket.connect(("127.0.0.1", int(self.config.get(self.get_module_configname(), "serverport"))))
			else:
				server_socket.connect((self.config.get("Global", "serverbind"), int(self.config.get(self.get_module_configname(), "serverport"))))
		except:
			pass

		return 

def finish(self):
        if not self.wfile.closed:
            try:
                self.wfile.flush()
            except socket.error:
                # A final socket error may have occurred here, such as
                # the local error ECONNABORTED.
                pass
        self.wfile.close()
        self.rfile.close() 

def close_request(self, request):
        """Called to clean up an individual request."""
        request.close() 

def finish(self):
        if not self.wfile.closed:
            try:
                self.wfile.flush()
            except socket.error:
                # An final socket error may have occurred here, such as
                # the local error ECONNABORTED.
                pass
        self.wfile.close()
        self.rfile.close() 

def close_request(self, request):
        # No need to close anything.
        pass 

def server_close(self):
        """Called to clean-up the server.

        May be overridden.

        """
        self.socket.close() 

def shutdown_request(self, request):
        """Called to shutdown and close an individual request."""
        self.close_request(request) 

def finish(self):
        if not self.wfile.closed:
            try:
                self.wfile.flush()
            except socket.error:
                # An final socket error may have occurred here, such as
                # the local error ECONNABORTED.
                pass
        self.wfile.close()
        self.rfile.close() 

def close_request(self, request):
        # No need to close anything.
        pass 

def shutdown_request(self, request):
        """Called to shutdown and close an individual request."""
        try:
            #explicitly shutdown.  socket.close() merely releases
            #the socket and waits for GC to perform the actual close.
            request.shutdown(socket.SHUT_WR)
        except socket.error:
            pass #some platforms may raise ENOTCONN here
        self.close_request(request) 

def stop(self, timeout=5):
        # OmniMarkupPreviewer: Force shutdown without waiting too much
        while self._get_qsize() > 0:
            conn = self.get()
            if conn is not _SHUTDOWNREQUEST:
                conn.close()
        # Must shut down threads here so the code that calls
        # this method can know when all threads are stopped.
        for worker in self._threads:
            self._queue.put(_SHUTDOWNREQUEST)

        # Don't join currentThread (when stop is called inside a request).
        current = threading.currentThread()
        if timeout and timeout >= 0:
            endtime = time.time() + timeout
        while self._threads:
            worker = self._threads.pop()
            if worker is not current and worker.isAlive():
                try:
                    if timeout is None or timeout < 0:
                        worker.join()
                    else:
                        remaining_time = endtime - time.time()
                        if remaining_time > 0:
                            worker.join(remaining_time)
                        if worker.isAlive():
                            # We exhausted the timeout.
                            # Forcibly shut down the socket.
                            c = worker.conn
                            if c and not c.rfile.closed:
                                try:
                                    c.socket.shutdown(socket.SHUT_RD)
                                except TypeError:
                                    # pyOpenSSL sockets don't take an arg
                                    c.socket.shutdown()
                            worker.join()
                except (AssertionError,
                        # Ignore repeated Ctrl-C.
                        # See https://bitbucket.org/cherrypy/cherrypy/issue/691.
                        KeyboardInterrupt):
                    pass 

def run(self):
        self.server.stats['Worker Threads'][self.getName()] = self.stats
        try:
            self.ready = True
            while True:
                conn = self.server.requests.get()
                if conn is _SHUTDOWNREQUEST:
                    return

                self.conn = conn
                if self.server.stats['Enabled']:
                    self.start_time = time.time()
                try:
                    conn.communicate()
                finally:
                    conn.close()
                    if self.server.stats['Enabled']:
                        self.requests_seen += self.conn.requests_seen
                        self.bytes_read += self.conn.rfile.bytes_read
                        self.bytes_written += self.conn.wfile.bytes_written
                        self.work_time += time.time() - self.start_time
                        self.start_time = None
                    self.conn = None
        except (KeyboardInterrupt, SystemExit):
            exc = sys.exc_info()[1]
            self.server.interrupt = exc 

def cleanup(self):
		try:
			self.comms_socket.close()
		except:
			pass

		if self.serverorclient:
			self.packetselector.delete_client(self.client) 

def simple_response(self, status, msg=""):
        """Write a simple response back to the client."""
        status = str(status)
        buf = [self.server.protocol + SPACE +
               status + CRLF,
               "Content-Length: %s\r\n" % len(msg),
               "Content-Type: text/plain\r\n"]

        if status[:3] in ("413", "414"):
            # Request Entity Too Large / Request-URI Too Long
            self.close_connection = True
            if self.response_protocol == 'HTTP/1.1':
                # This will not be true for 414, since read_request_line
                # usually raises 414 before reading the whole line, and we
                # therefore cannot know the proper response_protocol.
                buf.append("Connection: close\r\n")
            else:
                # HTTP/1.0 had no 413/414 status nor Connection header.
                # Emit 400 instead and trust the message body is enough.
                status = "400 Bad Request"

        buf.append(CRLF)
        if msg:
            if isinstance(msg, unicodestr):
                msg = msg.encode("ISO-8859-1")
            buf.append(msg)

        try:
            self.conn.wfile.sendall("".join(buf))
        except socket.error:
            x = sys.exc_info()[1]
            if x.args[0] not in socket_errors_to_ignore:
                raise 

def test_same_port_allocation(self):
        if "TRAVIS" in os.environ:
            self.skipTest("dual-stack servers often have port conflicts on travis")
        sockets = bind_sockets(0, "localhost")
        try:
            port = sockets[0].getsockname()[1]
            self.assertTrue(all(s.getsockname()[1] == port for s in sockets[1:]))
        finally:
            for sock in sockets:
                sock.close() 

def close(self):
        self.rfile.close() 

def close(self):
        self.rfile.close() 

def tearDown(self):
        self.resolver.close()
        super(ThreadedResolverTest, self).tearDown() 

def stop(self, timeout=5):
        # OmniMarkupPreviewer: Force shutdown without waiting too much
        while self._get_qsize() > 0:
            conn = self.get()
            if conn is not _SHUTDOWNREQUEST:
                conn.close()
        # Must shut down threads here so the code that calls
        # this method can know when all threads are stopped.
        for worker in self._threads:
            self._queue.put(_SHUTDOWNREQUEST)

        # Don't join currentThread (when stop is called inside a request).
        current = threading.currentThread()
        if timeout and timeout >= 0:
            endtime = time.time() + timeout
        while self._threads:
            worker = self._threads.pop()
            if worker is not current and worker.isAlive():
                try:
                    if timeout is None or timeout < 0:
                        worker.join()
                    else:
                        remaining_time = endtime - time.time()
                        if remaining_time > 0:
                            worker.join(remaining_time)
                        if worker.isAlive():
                            # We exhausted the timeout.
                            # Forcibly shut down the socket.
                            c = worker.conn
                            if c and not c.rfile.closed:
                                try:
                                    c.socket.shutdown(socket.SHUT_RD)
                                except TypeError:
                                    # pyOpenSSL sockets don't take an arg
                                    c.socket.shutdown()
                            worker.join()
                except (AssertionError,
                        # Ignore repeated Ctrl-C.
                        # See https://bitbucket.org/cherrypy/cherrypy/issue/691.
                        KeyboardInterrupt):
                    pass 

def close(self):
        """Close the socket underlying this connection."""
        self.rfile.close()

        if not self.linger:
            # Python's socket module does NOT call close on the kernel socket
            # when you call socket.close(). We do so manually here because we
            # want this server to send a FIN TCP segment immediately. Note this
            # must be called *before* calling socket.close(), because the latter
            # drops its reference to the kernel socket.
            # Python 3 *probably* fixed this with socket._real_close; hard to tell.
##            self.socket._sock.close()
            self.socket.close()
        else:
            # On the other hand, sometimes we want to hang around for a bit
            # to make sure the client has a chance to read our entire
            # response. Skipping the close() calls here delays the FIN
            # packet until the socket object is garbage-collected later.
            # Someday, perhaps, we'll do the full lingering_close that
            # Apache does, but not today.
            pass 

def simple_response(self, status, msg=""):
        """Write a simple response back to the client."""
        status = str(status)
        buf = [bytes(self.server.protocol, "ascii") + SPACE +
               bytes(status, "ISO-8859-1") + CRLF,
               bytes("Content-Length: %s\r\n" % len(msg), "ISO-8859-1"),
               b"Content-Type: text/plain\r\n"]

        if status[:3] in ("413", "414"):
            # Request Entity Too Large / Request-URI Too Long
            self.close_connection = True
            if self.response_protocol == 'HTTP/1.1':
                # This will not be true for 414, since read_request_line
                # usually raises 414 before reading the whole line, and we
                # therefore cannot know the proper response_protocol.
                buf.append(b"Connection: close\r\n")
            else:
                # HTTP/1.0 had no 413/414 status nor Connection header.
                # Emit 400 instead and trust the message body is enough.
                status = "400 Bad Request"

        buf.append(CRLF)
        if msg:
            if isinstance(msg, unicodestr):
                msg = msg.encode("ISO-8859-1")
            buf.append(msg)

        try:
            self.conn.wfile.write(b"".join(buf))
        except socket.error:
            x = sys.exc_info()[1]
            if x.args[0] not in socket_errors_to_ignore:
                raise 

def close(self):
        self.rfile.close() 

def close(self):
        self.rfile.close() 

def close(self):
        self.rfile.close() 

def test_reuse_port(self):
        sockets = []  # type: List[socket.socket]
        socket, port = bind_unused_port(reuse_port=True)
        try:
            sockets = bind_sockets(port, "127.0.0.1", reuse_port=True)
            self.assertTrue(all(s.getsockname()[1] == port for s in sockets))
        finally:
            socket.close()
            for sock in sockets:
                sock.close()