99 lines
2.8 KiB
Python
99 lines
2.8 KiB
Python
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"""
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InputOutput Classes used for connecting gateways
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across process or computer barriers.
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"""
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import socket, os, sys
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class SocketIO:
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server_stmt = """
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io = SocketIO(clientsock)
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import sys
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#try:
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# sys.stdout = sys.stderr = open('/tmp/execnet-socket-debug.log', 'a', 0)
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#except (IOError, OSError):
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# sys.stdout = sys.stderr = open('/dev/null', 'w')
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#print '='*60
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"""
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error = (socket.error, EOFError)
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def __init__(self, sock):
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self.sock = sock
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try:
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sock.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, 1)
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sock.setsockopt(socket.SOL_IP, socket.IP_TOS, 0x10) # IPTOS_LOWDELAY
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except socket.error, e:
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print "WARNING: Cannot set socket option:", str(e)
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self.readable = self.writeable = True
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def read(self, numbytes):
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"Read exactly 'bytes' bytes from the socket."
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buf = ""
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while len(buf) < numbytes:
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t = self.sock.recv(numbytes - len(buf))
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#print 'recv -->', len(t)
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if not t:
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raise EOFError
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buf += t
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return buf
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def write(self, data):
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"""write out all bytes to the socket. """
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self.sock.sendall(data)
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def close_read(self):
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if self.readable:
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self.sock.shutdown(0)
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self.readable = None
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def close_write(self):
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if self.writeable:
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self.sock.shutdown(1)
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self.writeable = None
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class Popen2IO:
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server_stmt = """
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import sys, StringIO
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io = Popen2IO(sys.stdout, sys.stdin)
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sys.stdout = sys.stderr = StringIO.StringIO()
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#try:
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# sys.stdout = sys.stderr = open('/tmp/execnet-popen-debug.log', 'a', 0)
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#except (IOError, OSError):
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# sys.stdout = sys.stderr = open('/dev/null', 'w')
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#print '='*60
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"""
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error = (IOError, OSError, EOFError)
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def __init__(self, infile, outfile):
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if sys.platform == 'win32':
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import msvcrt
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msvcrt.setmode(infile.fileno(), os.O_BINARY)
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msvcrt.setmode(outfile.fileno(), os.O_BINARY)
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self.outfile, self.infile = infile, outfile
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self.readable = self.writeable = True
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def read(self, numbytes):
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"""Read exactly 'bytes' bytes from the pipe. """
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#import sys
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#print >> sys.stderr, "reading..."
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s = self.infile.read(numbytes)
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#print >> sys.stderr, "read: %r" % s
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if len(s) < numbytes:
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raise EOFError
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return s
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def write(self, data):
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"""write out all bytes to the pipe. """
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#import sys
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#print >> sys.stderr, "writing: %r" % data
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self.outfile.write(data)
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self.outfile.flush()
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def close_read(self):
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if self.readable:
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self.infile.close()
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self.readable = None
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def close_write(self):
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if self.writeable:
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self.outfile.close()
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self.writeable = None
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