diff options
Diffstat (limited to 'kafka/vendor/socketpair.py')
-rw-r--r-- | kafka/vendor/socketpair.py | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/kafka/vendor/socketpair.py b/kafka/vendor/socketpair.py new file mode 100644 index 0000000..6a87c4d --- /dev/null +++ b/kafka/vendor/socketpair.py @@ -0,0 +1,57 @@ +# pylint: skip-file +# vendored from https://github.com/mhils/backports.socketpair + +import sys +import socket +import errno + +_LOCALHOST = '127.0.0.1' +_LOCALHOST_V6 = '::1' + +if not hasattr(socket, "socketpair"): + # Origin: https://gist.github.com/4325783, by Geert Jansen. Public domain. + def socketpair(family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0): + if family == socket.AF_INET: + host = _LOCALHOST + elif family == socket.AF_INET6: + host = _LOCALHOST_V6 + else: + raise ValueError("Only AF_INET and AF_INET6 socket address families " + "are supported") + if type != socket.SOCK_STREAM: + raise ValueError("Only SOCK_STREAM socket type is supported") + if proto != 0: + raise ValueError("Only protocol zero is supported") + + # We create a connected TCP socket. Note the trick with + # setblocking(False) that prevents us from having to create a thread. + lsock = socket.socket(family, type, proto) + try: + lsock.bind((host, 0)) + lsock.listen(min(socket.SOMAXCONN, 128)) + # On IPv6, ignore flow_info and scope_id + addr, port = lsock.getsockname()[:2] + csock = socket.socket(family, type, proto) + try: + csock.setblocking(False) + if sys.version_info >= (3, 0): + try: + csock.connect((addr, port)) + except (BlockingIOError, InterruptedError): + pass + else: + try: + csock.connect((addr, port)) + except socket.error as e: + if e.errno != errno.WSAEWOULDBLOCK: + raise + csock.setblocking(True) + ssock, _ = lsock.accept() + except: + csock.close() + raise + finally: + lsock.close() + return (ssock, csock) + + socket.socketpair = socketpair |