Yury Selivanov | 8cd5165 | 2019-05-27 15:57:20 +0200 | [diff] [blame] | 1 | import socket |
| 2 | import warnings |
| 3 | |
| 4 | |
| 5 | class TransportSocket: |
| 6 | |
| 7 | """A socket-like wrapper for exposing real transport sockets. |
| 8 | |
| 9 | These objects can be safely returned by APIs like |
| 10 | `transport.get_extra_info('socket')`. All potentially disruptive |
| 11 | operations (like "socket.close()") are banned. |
| 12 | """ |
| 13 | |
| 14 | __slots__ = ('_sock',) |
| 15 | |
| 16 | def __init__(self, sock: socket.socket): |
| 17 | self._sock = sock |
| 18 | |
| 19 | def _na(self, what): |
| 20 | warnings.warn( |
| 21 | f"Using {what} on sockets returned from get_extra_info('socket') " |
| 22 | f"will be prohibited in asyncio 3.9. Please report your use case " |
| 23 | f"to bugs.python.org.", |
| 24 | DeprecationWarning, source=self) |
| 25 | |
| 26 | @property |
| 27 | def family(self): |
| 28 | return self._sock.family |
| 29 | |
| 30 | @property |
| 31 | def type(self): |
| 32 | return self._sock.type |
| 33 | |
| 34 | @property |
| 35 | def proto(self): |
| 36 | return self._sock.proto |
| 37 | |
| 38 | def __repr__(self): |
| 39 | s = ( |
| 40 | f"<asyncio.TransportSocket fd={self.fileno()}, " |
| 41 | f"family={self.family!s}, type={self.type!s}, " |
| 42 | f"proto={self.proto}" |
| 43 | ) |
| 44 | |
| 45 | if self.fileno() != -1: |
| 46 | try: |
| 47 | laddr = self.getsockname() |
| 48 | if laddr: |
| 49 | s = f"{s}, laddr={laddr}" |
| 50 | except socket.error: |
| 51 | pass |
| 52 | try: |
| 53 | raddr = self.getpeername() |
| 54 | if raddr: |
| 55 | s = f"{s}, raddr={raddr}" |
| 56 | except socket.error: |
| 57 | pass |
| 58 | |
| 59 | return f"{s}>" |
| 60 | |
| 61 | def __getstate__(self): |
| 62 | raise TypeError("Cannot serialize asyncio.TransportSocket object") |
| 63 | |
| 64 | def fileno(self): |
| 65 | return self._sock.fileno() |
| 66 | |
| 67 | def dup(self): |
| 68 | return self._sock.dup() |
| 69 | |
| 70 | def get_inheritable(self): |
| 71 | return self._sock.get_inheritable() |
| 72 | |
| 73 | def shutdown(self, how): |
| 74 | # asyncio doesn't currently provide a high-level transport API |
| 75 | # to shutdown the connection. |
| 76 | self._sock.shutdown(how) |
| 77 | |
| 78 | def getsockopt(self, *args, **kwargs): |
| 79 | return self._sock.getsockopt(*args, **kwargs) |
| 80 | |
| 81 | def setsockopt(self, *args, **kwargs): |
| 82 | self._sock.setsockopt(*args, **kwargs) |
| 83 | |
| 84 | def getpeername(self): |
| 85 | return self._sock.getpeername() |
| 86 | |
| 87 | def getsockname(self): |
| 88 | return self._sock.getsockname() |
| 89 | |
| 90 | def getsockbyname(self): |
| 91 | return self._sock.getsockbyname() |
| 92 | |
| 93 | def accept(self): |
| 94 | self._na('accept() method') |
| 95 | return self._sock.accept() |
| 96 | |
| 97 | def connect(self, *args, **kwargs): |
| 98 | self._na('connect() method') |
| 99 | return self._sock.connect(*args, **kwargs) |
| 100 | |
| 101 | def connect_ex(self, *args, **kwargs): |
| 102 | self._na('connect_ex() method') |
| 103 | return self._sock.connect_ex(*args, **kwargs) |
| 104 | |
| 105 | def bind(self, *args, **kwargs): |
| 106 | self._na('bind() method') |
| 107 | return self._sock.bind(*args, **kwargs) |
| 108 | |
| 109 | def ioctl(self, *args, **kwargs): |
| 110 | self._na('ioctl() method') |
| 111 | return self._sock.ioctl(*args, **kwargs) |
| 112 | |
| 113 | def listen(self, *args, **kwargs): |
| 114 | self._na('listen() method') |
| 115 | return self._sock.listen(*args, **kwargs) |
| 116 | |
| 117 | def makefile(self): |
| 118 | self._na('makefile() method') |
| 119 | return self._sock.makefile() |
| 120 | |
| 121 | def sendfile(self, *args, **kwargs): |
| 122 | self._na('sendfile() method') |
| 123 | return self._sock.sendfile(*args, **kwargs) |
| 124 | |
| 125 | def close(self): |
| 126 | self._na('close() method') |
| 127 | return self._sock.close() |
| 128 | |
| 129 | def detach(self): |
| 130 | self._na('detach() method') |
| 131 | return self._sock.detach() |
| 132 | |
| 133 | def sendmsg_afalg(self, *args, **kwargs): |
| 134 | self._na('sendmsg_afalg() method') |
| 135 | return self._sock.sendmsg_afalg(*args, **kwargs) |
| 136 | |
| 137 | def sendmsg(self, *args, **kwargs): |
| 138 | self._na('sendmsg() method') |
| 139 | return self._sock.sendmsg(*args, **kwargs) |
| 140 | |
| 141 | def sendto(self, *args, **kwargs): |
| 142 | self._na('sendto() method') |
| 143 | return self._sock.sendto(*args, **kwargs) |
| 144 | |
| 145 | def send(self, *args, **kwargs): |
| 146 | self._na('send() method') |
| 147 | return self._sock.send(*args, **kwargs) |
| 148 | |
| 149 | def sendall(self, *args, **kwargs): |
| 150 | self._na('sendall() method') |
| 151 | return self._sock.sendall(*args, **kwargs) |
| 152 | |
| 153 | def set_inheritable(self, *args, **kwargs): |
| 154 | self._na('set_inheritable() method') |
| 155 | return self._sock.set_inheritable(*args, **kwargs) |
| 156 | |
| 157 | def share(self, process_id): |
| 158 | self._na('share() method') |
| 159 | return self._sock.share(process_id) |
| 160 | |
| 161 | def recv_into(self, *args, **kwargs): |
| 162 | self._na('recv_into() method') |
| 163 | return self._sock.recv_into(*args, **kwargs) |
| 164 | |
| 165 | def recvfrom_into(self, *args, **kwargs): |
| 166 | self._na('recvfrom_into() method') |
| 167 | return self._sock.recvfrom_into(*args, **kwargs) |
| 168 | |
| 169 | def recvmsg_into(self, *args, **kwargs): |
| 170 | self._na('recvmsg_into() method') |
| 171 | return self._sock.recvmsg_into(*args, **kwargs) |
| 172 | |
| 173 | def recvmsg(self, *args, **kwargs): |
| 174 | self._na('recvmsg() method') |
| 175 | return self._sock.recvmsg(*args, **kwargs) |
| 176 | |
| 177 | def recvfrom(self, *args, **kwargs): |
| 178 | self._na('recvfrom() method') |
| 179 | return self._sock.recvfrom(*args, **kwargs) |
| 180 | |
| 181 | def recv(self, *args, **kwargs): |
| 182 | self._na('recv() method') |
| 183 | return self._sock.recv(*args, **kwargs) |
| 184 | |
| 185 | def settimeout(self, value): |
| 186 | if value == 0: |
| 187 | return |
| 188 | raise ValueError( |
| 189 | 'settimeout(): only 0 timeout is allowed on transport sockets') |
| 190 | |
| 191 | def gettimeout(self): |
| 192 | return 0 |
| 193 | |
| 194 | def setblocking(self, flag): |
| 195 | if not flag: |
| 196 | return |
| 197 | raise ValueError( |
| 198 | 'setblocking(): transport sockets cannot be blocking') |
| 199 | |
| 200 | def __enter__(self): |
| 201 | self._na('context manager protocol') |
| 202 | return self._sock.__enter__() |
| 203 | |
| 204 | def __exit__(self, *err): |
| 205 | self._na('context manager protocol') |
| 206 | return self._sock.__exit__(*err) |