Python Protocol.set_compression_level方法代码示例

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]
 def new_connection(self, *args):
     log.info("new_connection(%s)", args)
     sock, address = self.listener.accept()
     log.info("new_connection(%s) sock=%s, address=%s", args, sock, address)
     sock.settimeout(None)
     sock.setblocking(1)
     sc = makeSocketConnection(sock, str(address)+"server")
     protocol = Protocol(gobject, sc, self.process_packet)
     protocol.salt = None
     protocol.set_compression_level(1)
     protocol.start()
     return True

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]

#.........这里部分代码省略.........
        #so the protocol shutdown won't set a different one:
        if self.exit_code is None:
            self.exit_code = exit_code
        #try to tell the server we're going, then quit
        log("disconnect_and_quit(%s, %s)", exit_code, reason)
        p = self._protocol
        if p is None or p._closed:
            self.quit(exit_code)
            return
        def protocol_closed():
            log("disconnect_and_quit: protocol_closed()")
            self.idle_add(self.quit, exit_code)
        if p:
            p.flush_then_close(["disconnect", reason], done_callback=protocol_closed)
        self.timeout_add(1000, self.quit, exit_code)

    def exit(self):
        sys.exit()


    def client_type(self):
        #overriden in subclasses!
        return "Python"

    def get_scheduler(self):
        raise NotImplementedError()

    def setup_connection(self, conn):
        log("setup_connection(%s)", conn)
        self._protocol = Protocol(self.get_scheduler(), conn, self.process_packet, self.next_packet)
        self._protocol.large_packets.append("keymap-changed")
        self._protocol.large_packets.append("server-settings")
        self._protocol.large_packets.append("logging")
        self._protocol.set_compression_level(self.compression_level)
        self._protocol.receive_aliases.update(self._aliases)
        self._protocol.enable_default_encoder()
        self._protocol.enable_default_compressor()
        self.have_more = self._protocol.source_has_more
        if conn.timeout>0:
            self.timeout_add((conn.timeout + EXTRA_TIMEOUT) * 1000, self.verify_connected)

    def init_packet_handlers(self):
        self._packet_handlers = {
            "hello"             : self._process_hello,
            }
        self._ui_packet_handlers = {
            "challenge":                self._process_challenge,
            "disconnect":               self._process_disconnect,
            "set_deflate":              self._process_set_deflate,
            "startup-complete":         self._process_startup_complete,
            Protocol.CONNECTION_LOST:   self._process_connection_lost,
            Protocol.GIBBERISH:         self._process_gibberish,
            Protocol.INVALID:           self._process_invalid,
            }

    def init_authenticated_packet_handlers(self):
        self._packet_handlers["send-file"] = self._process_send_file


    def init_aliases(self):
        packet_types = list(self._packet_handlers.keys())
        packet_types += list(self._ui_packet_handlers.keys())
        i = 1
        for key in packet_types:
            self._aliases[i] = key
            self._reverse_aliases[key] = i

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]

#.........这里部分代码省略.........
        if os.getuid()!=self.uid:
            os.setuid(self.uid)
        log("ProxyProcess.run() new uid=%s, gid=%s", os.getuid(), os.getgid())

        if self.env_options:
            #TODO: whitelist env update?
            os.environ.update(self.env_options)
        self.video_init()

        log.info("new proxy started for client %s and server %s", self.client_conn, self.server_conn)

        signal.signal(signal.SIGTERM, self.signal_quit)
        signal.signal(signal.SIGINT, self.signal_quit)
        log("registered signal handler %s", self.signal_quit)

        make_daemon_thread(self.server_message_queue, "server message queue").start()

        if self.create_control_socket():
            self.control_socket_thread = make_daemon_thread(self.control_socket_loop, "control")
            self.control_socket_thread.start()

        self.main_queue = Queue()
        #setup protocol wrappers:
        self.server_packets = Queue(PROXY_QUEUE_SIZE)
        self.client_packets = Queue(PROXY_QUEUE_SIZE)
        self.client_protocol = Protocol(self, self.client_conn, self.process_client_packet, self.get_client_packet)
        self.client_protocol.restore_state(self.client_state)
        self.server_protocol = Protocol(self, self.server_conn, self.process_server_packet, self.get_server_packet)
        #server connection tweaks:
        self.server_protocol.large_packets.append("draw")
        self.server_protocol.large_packets.append("window-icon")
        self.server_protocol.large_packets.append("keymap-changed")
        self.server_protocol.large_packets.append("server-settings")
        self.server_protocol.set_compression_level(self.session_options.get("compression_level", 0))
        self.server_protocol.enable_default_encoder()

        self.lost_windows = set()
        self.encode_queue = Queue()
        self.encode_thread = make_daemon_thread(self.encode_loop, "encode")
        self.encode_thread.start()

        log("starting network threads")
        self.server_protocol.start()
        self.client_protocol.start()

        #forward the hello packet:
        hello_packet = ("hello", self.filter_client_caps(self.caps))
        self.queue_server_packet(hello_packet)
        self.timeout_add(VIDEO_TIMEOUT*1000, self.timeout_video_encoders)

        try:
            try:
                self.run_queue()
            except KeyboardInterrupt, e:
                self.stop(str(e))
        finally:
            log("ProxyProcess.run() ending %s", os.getpid())

    def video_init(self):
        log("video_init() will try video encoders: %s", self.video_encoder_modules)
        self.video_helper = getVideoHelper()
        #only use video encoders (no CSC supported in proxy)
        self.video_helper.set_modules(video_encoders=self.video_encoder_modules)
        self.video_helper.init()

        self.video_encoding_defs = {}

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]
class ProxyInstanceProcess(Process):

    def __init__(self, uid, gid, env_options, session_options, client_conn, client_state, cipher, encryption_key, server_conn, caps, message_queue):
        Process.__init__(self, name=str(client_conn))
        self.uid = uid
        self.gid = gid
        self.env_options = env_options
        self.session_options = self.sanitize_session_options(session_options)
        self.client_conn = client_conn
        self.client_state = client_state
        self.cipher = cipher
        self.encryption_key = encryption_key
        self.server_conn = server_conn
        self.caps = caps
        debug("ProxyProcess%s", (uid, gid, client_conn, client_state, cipher, encryption_key, server_conn, "{..}"))
        self.client_protocol = None
        self.server_protocol = None
        self.main_queue = None
        self.message_queue = message_queue
        self.video_encoder_types = ["nvenc", "x264"]
        self.video_encoders = {}
        self.video_helper = None

    def server_message_queue(self):
        while True:
            log.info("waiting for server message on %s", self.message_queue)
            m = self.message_queue.get()
            log.info("proxy server message: %s", m)
            if m=="stop":
                self.stop("proxy server request")
                return

    def signal_quit(self, signum, frame):
        log.info("")
        log.info("proxy process pid %s got signal %s, exiting", os.getpid(), SIGNAMES.get(signum, signum))
        signal.signal(signal.SIGINT, deadly_signal)
        signal.signal(signal.SIGTERM, deadly_signal)
        self.stop(SIGNAMES.get(signum, signum))

    def idle_add(self, fn, *args, **kwargs):
        #we emulate gobject's idle_add using a simple queue
        self.main_queue.put((fn, args, kwargs))

    def timeout_add(self, timeout, fn, *args, **kwargs):
        #emulate gobject's timeout_add using idle add and a Timer
        #using custom functions to cancel() the timer when needed
        timer = None
        def idle_exec():
            v = fn(*args, **kwargs)
            if not bool(v):
                timer.cancel()
            return False
        def timer_exec():
            #just run via idle_add:
            self.idle_add(idle_exec)
        timer = Timer(timeout*1000.0, timer_exec)
        timer.start()

    def run(self):
        debug("ProxyProcess.run() pid=%s, uid=%s, gid=%s", os.getpid(), os.getuid(), os.getgid())
        #change uid and gid:
        if os.getgid()!=self.gid:
            os.setgid(self.gid)
        if os.getuid()!=self.uid:
            os.setuid(self.uid)
        debug("ProxyProcess.run() new uid=%s, gid=%s", os.getuid(), os.getgid())

        if self.env_options:
            #TODO: whitelist env update?
            os.environ.update(self.env_options)

        log.info("new proxy started for client %s and server %s", self.client_conn, self.server_conn)

        signal.signal(signal.SIGTERM, self.signal_quit)
        signal.signal(signal.SIGINT, self.signal_quit)
        debug("registered signal handler %s", self.signal_quit)

        make_daemon_thread(self.server_message_queue, "server message queue").start()

        self.main_queue = Queue()
        #setup protocol wrappers:
        self.server_packets = Queue(PROXY_QUEUE_SIZE)
        self.client_packets = Queue(PROXY_QUEUE_SIZE)
        self.client_protocol = Protocol(self, self.client_conn, self.process_client_packet, self.get_client_packet)
        self.client_protocol.restore_state(self.client_state)
        self.server_protocol = Protocol(self, self.server_conn, self.process_server_packet, self.get_server_packet)
        #server connection tweaks:
        self.server_protocol.large_packets.append("draw")
        self.server_protocol.large_packets.append("keymap-changed")
        self.server_protocol.large_packets.append("server-settings")
        self.server_protocol.set_compression_level(self.session_options.get("compression_level", 0))

        debug("starting network threads")
        self.server_protocol.start()
        self.client_protocol.start()

        #forward the hello packet:
        hello_packet = ("hello", self.filter_client_caps(self.caps))
        self.queue_server_packet(hello_packet)

#.........这里部分代码省略.........

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]
class XpraClientBase(object):
    """ Base class for Xpra clients.
        Provides the glue code for:
        * sending packets via Protocol
        * handling packets received via _process_packet
        For an actual implementation, look at:
        * GObjectXpraClient
        * xpra.client.gtk2.client
        * xpra.client.gtk3.client
    """

    def __init__(self):
        self.exit_code = None
        self.compression_level = 0
        self.display = None
        self.username = None
        self.password_file = None
        self.password_sent = False
        self.encryption = None
        self.encryption_keyfile = None
        self.quality = -1
        self.min_quality = 0
        self.speed = 0
        self.min_speed = -1
        #protocol stuff:
        self._protocol = None
        self._priority_packets = []
        self._ordinary_packets = []
        self._mouse_position = None
        self._aliases = {}
        self._reverse_aliases = {}
        #server state and caps:
        self.server_capabilities = None
        self._remote_machine_id = None
        self._remote_uuid = None
        self._remote_version = None
        self._remote_revision = None
        self._remote_platform = None
        self._remote_platform_release = None
        self._remote_platform_platform = None
        self._remote_platform_linux_distribution = None
        self.uuid = get_user_uuid()
        self.init_packet_handlers()

    def init(self, opts):
        self.compression_level = opts.compression_level
        self.display = opts.display
        self.username = opts.username
        self.password_file = opts.password_file
        self.encryption = opts.encryption
        self.encryption_keyfile = opts.encryption_keyfile
        self.quality = opts.quality
        self.min_quality = opts.min_quality
        self.speed = opts.speed
        self.min_speed = opts.min_speed

    def timeout_add(self, *args):
        raise Exception("override me!")

    def idle_add(self, *args):
        raise Exception("override me!")

    def source_remove(self, *args):
        raise Exception("override me!")


    def install_signal_handlers(self):
        def deadly_signal(signum, frame):
            sys.stderr.write("\ngot deadly signal %s, exiting\n" % SIGNAMES.get(signum, signum))
            sys.stderr.flush()
            self.cleanup()
            os._exit(128 + signum)
        def app_signal(signum, frame):
            sys.stderr.write("\ngot signal %s, exiting\n" % SIGNAMES.get(signum, signum))
            sys.stderr.flush()
            signal.signal(signal.SIGINT, deadly_signal)
            signal.signal(signal.SIGTERM, deadly_signal)
            self.timeout_add(0, self.quit, 128 + signum)
        signal.signal(signal.SIGINT, app_signal)
        signal.signal(signal.SIGTERM, app_signal)


    def client_type(self):
        #overriden in subclasses!
        return "Python"

    def get_scheduler(self):
        raise NotImplementedError()

    def setup_connection(self, conn):
        log.debug("setup_connection(%s)", conn)
        self._protocol = Protocol(self.get_scheduler(), conn, self.process_packet, self.next_packet)
        self._protocol.large_packets.append("keymap-changed")
        self._protocol.large_packets.append("server-settings")
        self._protocol.set_compression_level(self.compression_level)
        self.have_more = self._protocol.source_has_more

    def init_packet_handlers(self):
        self._packet_handlers = {
            "hello": self._process_hello,
#.........这里部分代码省略.........

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]

#.........这里部分代码省略.........
        #so the protocol shutdown won't set a different one:
        if self.exit_code is None:
            self.exit_code = exit_code
        #try to tell the server we're going, then quit
        log("disconnect_and_quit(%s, %s)", exit_code, reason)
        p = self._protocol
        if p is None or p._closed:
            self.quit(exit_code)
            return
        def protocol_closed():
            log("disconnect_and_quit: protocol_closed()")
            self.idle_add(self.quit, exit_code)
        if p:
            p.flush_then_close(["disconnect", reason], done_callback=protocol_closed)
        self.timeout_add(1000, self.quit, exit_code)

    def exit(self):
        sys.exit()


    def client_type(self):
        #overriden in subclasses!
        return "Python"

    def get_scheduler(self):
        raise NotImplementedError()

    def setup_connection(self, conn):
        netlog("setup_connection(%s) timeout=%s", conn, conn.timeout)
        self._protocol = Protocol(self.get_scheduler(), conn, self.process_packet, self.next_packet)
        self._protocol.large_packets.append("keymap-changed")
        self._protocol.large_packets.append("server-settings")
        self._protocol.large_packets.append("logging")
        self._protocol.set_compression_level(self.compression_level)
        self._protocol.receive_aliases.update(self._aliases)
        self._protocol.enable_default_encoder()
        self._protocol.enable_default_compressor()
        if self.encryption and ENCRYPT_FIRST_PACKET:
            key = self.get_encryption_key()
            self._protocol.set_cipher_out(self.encryption, DEFAULT_IV, key, DEFAULT_SALT, DEFAULT_ITERATIONS, INITIAL_PADDING)
        self.have_more = self._protocol.source_has_more
        if conn.timeout>0:
            self.timeout_add((conn.timeout + EXTRA_TIMEOUT) * 1000, self.verify_connected)
        netlog("setup_connection(%s) protocol=%s", conn, self._protocol)


    def remove_packet_handlers(self, *keys):
        for k in keys:
            for d in (self._packet_handlers, self._ui_packet_handlers):
                try:
                    del d[k]
                except:
                    pass

    def set_packet_handlers(self, to, defs):
        """ configures the given packet handlers,
            and make sure we remove any existing ones with the same key
            (which can be useful for subclasses, not here)
        """
        log("set_packet_handlers(%s, %s)", to, defs)
        self.remove_packet_handlers(*defs.keys())
        for k,v in defs.items():
            to[k] = v

    def init_packet_handlers(self):
        self._packet_handlers = {}

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]

#.........这里部分代码省略.........
            sys.stderr.write("\ngot deadly signal %s, exiting\n" % SIGNAMES.get(signum, signum))
            sys.stderr.flush()
            self.cleanup()
            os._exit(128 + signum)
        def app_signal(signum, frame):
            sys.stderr.write("\ngot signal %s, exiting\n" % SIGNAMES.get(signum, signum))
            sys.stderr.flush()
            signal.signal(signal.SIGINT, deadly_signal)
            signal.signal(signal.SIGTERM, deadly_signal)
            self.timeout_add(0, self.disconnect_and_quit, 128 + signum, "exit on signal %s" % SIGNAMES.get(signum, signum))
        signal.signal(signal.SIGINT, app_signal)
        signal.signal(signal.SIGTERM, app_signal)

    def disconnect_and_quit(self, exit_code, reason):
        #make sure that we set the exit code early,
        #so the protocol shutdown won't set a different one:
        if self.exit_code is None:
            self.exit_code = exit_code
        #try to tell the server we're going, then quit
        log("disconnect_and_quit(%s, %s)", exit_code, reason)
        p = self._protocol
        if p is None or p._closed:
            self.quit(exit_code)
            return
        def do_quit():
            log("disconnect_and_quit: do_quit()")
            self.idle_add(self.quit, exit_code)
        if p:
            p.flush_then_close(["disconnect", reason], done_callback=do_quit)
        self.timeout_add(1000, do_quit)


    def client_type(self):
        #overriden in subclasses!
        return "Python"

    def get_scheduler(self):
        raise NotImplementedError()

    def setup_connection(self, conn):
        log.debug("setup_connection(%s)", conn)
        self._protocol = Protocol(self.get_scheduler(), conn, self.process_packet, self.next_packet)
        self._protocol.large_packets.append("keymap-changed")
        self._protocol.large_packets.append("server-settings")
        self._protocol.set_compression_level(self.compression_level)
        self._protocol.receive_aliases.update(self._aliases)
        self._protocol.enable_default_encoder()
        self._protocol.enable_default_compressor()
        self.have_more = self._protocol.source_has_more
        if conn.timeout>0:
            self.timeout_add((conn.timeout + EXTRA_TIMEOUT) * 1000, self.verify_connected)

    def init_packet_handlers(self):
        self._packet_handlers = {
            "hello": self._process_hello,
            }
        self._ui_packet_handlers = {
            "challenge":                self._process_challenge,
            "disconnect":               self._process_disconnect,
            "set_deflate":              self._process_set_deflate,
            "startup-complete":         self._process_startup_complete,
            Protocol.CONNECTION_LOST:   self._process_connection_lost,
            Protocol.GIBBERISH:         self._process_gibberish,
            Protocol.INVALID:           self._process_invalid,
            }

    def init_authenticated_packet_handlers(self):
        #for subclasses to override
        pass


    def init_aliases(self):
        packet_types = list(self._packet_handlers.keys())
        packet_types += list(self._ui_packet_handlers.keys())
        i = 1
        for key in packet_types:
            self._aliases[i] = key
            self._reverse_aliases[key] = i
            i += 1

    def send_hello(self, challenge_response=None, client_salt=None):
        try:
            hello = self.make_hello_base()
            if self.password_file and not challenge_response:
                #avoid sending the full hello: tell the server we want
                #a packet challenge first
                hello["challenge"] = True
            else:
                hello.update(self.make_hello())
        except Exception, e:
            log.error("error preparing connection: %s", e)
            self.quit(EXIT_INTERNAL_ERROR)
            return
        if challenge_response:
            assert self.password_file
            hello["challenge_response"] = challenge_response
            if client_salt:
                hello["challenge_client_salt"] = client_salt
        log.debug("send_hello(%s) packet=%s", binascii.hexlify(b(challenge_response or "")), hello)
        self.send("hello", hello)

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]

#.........这里部分代码省略.........

        log.info("new proxy instance started")
        log.info(" for client %s", self.client_conn)
        log.info(" and server %s", self.server_conn)

        signal.signal(signal.SIGTERM, self.signal_quit)
        signal.signal(signal.SIGINT, self.signal_quit)
        log("registered signal handler %s", self.signal_quit)

        start_thread(self.server_message_queue, "server message queue")

        if not self.create_control_socket():
            #TODO: should send a message to the client
            return
        self.control_socket_thread = start_thread(self.control_socket_loop, "control")

        self.main_queue = Queue()
        #setup protocol wrappers:
        self.server_packets = Queue(PROXY_QUEUE_SIZE)
        self.client_packets = Queue(PROXY_QUEUE_SIZE)
        self.client_protocol = Protocol(self, self.client_conn, self.process_client_packet, self.get_client_packet)
        self.client_protocol.restore_state(self.client_state)
        self.server_protocol = Protocol(self, self.server_conn, self.process_server_packet, self.get_server_packet)
        #server connection tweaks:
        self.server_protocol.large_packets.append("draw")
        self.server_protocol.large_packets.append("window-icon")
        self.server_protocol.large_packets.append("keymap-changed")
        self.server_protocol.large_packets.append("server-settings")
        if self.caps.boolget("file-transfer"):
            self.client_protocol.large_packets.append("send-file")
            self.client_protocol.large_packets.append("send-file-chunk")
            self.server_protocol.large_packets.append("send-file")
            self.server_protocol.large_packets.append("send-file-chunk")
        self.server_protocol.set_compression_level(self.session_options.get("compression_level", 0))
        self.server_protocol.enable_default_encoder()

        self.lost_windows = set()
        self.encode_queue = Queue()
        self.encode_thread = start_thread(self.encode_loop, "encode")

        log("starting network threads")
        self.server_protocol.start()
        self.client_protocol.start()

        self.send_hello()
        self.timeout_add(VIDEO_TIMEOUT*1000, self.timeout_video_encoders)

        try:
            self.run_queue()
        except KeyboardInterrupt as e:
            self.stop(str(e))
        finally:
            log("ProxyProcess.run() ending %s", os.getpid())

    def video_init(self):
        enclog("video_init() loading codecs")
        load_codecs(decoders=False)
        enclog("video_init() will try video encoders: %s", csv(self.video_encoder_modules) or "none")
        self.video_helper = getVideoHelper()
        #only use video encoders (no CSC supported in proxy)
        self.video_helper.set_modules(video_encoders=self.video_encoder_modules)
        self.video_helper.init()

        self.video_encoding_defs = {}
        self.video_encoders = {}
        self.video_encoders_dst_formats = []

# 需要导入模块: from xpra.net.protocol import Protocol [as 别名]
# 或者: from xpra.net.protocol.Protocol import set_compression_level [as 别名]
class XpraClientBase(object):
    """ Base class for Xpra clients.
        Provides the glue code for:
        * sending packets via Protocol
        * handling packets received via _process_packet
        For an actual implementation, look at:
        * GObjectXpraClient
        * xpra.client.gtk2.client
        * xpra.client.gtk3.client
    """

    def __init__(self):
        self.exit_code = None
        self.compression_level = 0
        self.password = None
        self.password_file = None
        self.password_sent = False
        self.encryption = None
        self.quality = -1
        self.min_quality = 0
        self.speed = 0
        self.min_speed = -1
        #protocol stuff:
        self._protocol = None
        self._priority_packets = []
        self._ordinary_packets = []
        self._mouse_position = None
        self._aliases = {}
        self._reverse_aliases = {}
        #server state and caps:
        self.server_capabilities = None
        self._remote_version = None
        self._remote_revision = None
        self._remote_platform = None
        self._remote_platform_release = None
        self._remote_platform_platform = None
        self._remote_platform_linux_distribution = None
        self.make_uuid()
        self.init_packet_handlers()

    def init(self, opts):
        self.compression_level = opts.compression_level
        self.password_file = opts.password_file
        self.encryption = opts.encryption
        self.quality = opts.quality
        self.min_quality = opts.min_quality
        self.speed = opts.speed
        self.min_speed = opts.min_speed

    def timeout_add(self, *args):
        raise Exception("override me!")

    def idle_add(self, *args):
        raise Exception("override me!")

    def source_remove(self, *args):
        raise Exception("override me!")


    def install_signal_handlers(self):
        def deadly_signal(signum, frame):
            sys.stderr.write("\ngot deadly signal %s, exiting\n" % SIGNAMES.get(signum, signum))
            sys.stderr.flush()
            self.cleanup()
            os._exit(128 + signum)
        def app_signal(signum, frame):
            sys.stderr.write("\ngot signal %s, exiting\n" % SIGNAMES.get(signum, signum))
            sys.stderr.flush()
            signal.signal(signal.SIGINT, deadly_signal)
            signal.signal(signal.SIGTERM, deadly_signal)
            self.timeout_add(0, self.quit, 128 + signum)
        signal.signal(signal.SIGINT, app_signal)
        signal.signal(signal.SIGTERM, app_signal)


    def client_type(self):
        #overriden in subclasses!
        return "Python"

    def setup_connection(self, conn):
        log.debug("setup_connection(%s)", conn)
        self._protocol = Protocol(conn, self.process_packet, self.next_packet)
        self._protocol.large_packets.append("keymap-changed")
        self._protocol.large_packets.append("server-settings")
        self._protocol.set_compression_level(self.compression_level)
        self.have_more = self._protocol.source_has_more

    def init_packet_handlers(self):
        self._packet_handlers = {
            "hello": self._process_hello,
            }
        self._ui_packet_handlers = {
            "challenge": self._process_challenge,
            "disconnect": self._process_disconnect,
            "set_deflate": self._process_set_deflate,
            Protocol.CONNECTION_LOST: self._process_connection_lost,
            Protocol.GIBBERISH: self._process_gibberish,
            }

    def init_aliases(self):
#.........这里部分代码省略.........