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https://github.com/frappe/gunicorn.git
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86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
# -*- coding: utf-8 -
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#
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# 2009 (c) Benoit Chesneau <benoitc@e-engura.com>
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# 2009 (c) Paul J. Davis <paul.joseph.davis@gmail.com>
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation
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# files (the "Software"), to deal in the Software without
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# restriction, including without limitation the rights to use,
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# copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following
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# conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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from errno import EALREADY, EINPROGRESS, EWOULDBLOCK, ECONNRESET, \
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ENOTCONN, ESHUTDOWN, EINTR, EISCONN, EBADF, ECONNABORTED, errorcode
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import socket
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SOCKET_CLOSED = (ECONNRESET, ENOTCONN, ESHUTDOWN)
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class IOStream(object):
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chunk_size = 4096
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def __init__(self, sock):
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self.sock = sock
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self.buf = ""
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def recv(self, buffer_size):
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buffer_size = buffer_size or 0
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if self.buf:
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l = len(self.buf)
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if buffer_size > l:
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buffer_size -= l
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else:
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s = self.buf[:buffer_size]
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self.buf = self.buf[buffer_size:]
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return s
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try:
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data = self.sock.recv(buffer_size)
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s = self.buf + data
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self.buf = ''
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return s
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except socket.error, e:
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if e[0] == EWOULDBLOCK:
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return None
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if e[0] in SOCKET_CLOSED:
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return ''
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raise
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def send(self, data):
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return self.sock.send(data)
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def read_until(self, delimiter):
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while True:
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try:
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data = self.recv(self.chunk_size)
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except socket.error, e:
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return
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self.buf = self.buf + data
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lb = len(self.buf)
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ld = len(delimiter)
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i = self.buf.find(delimiter)
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if i != -1:
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if i > 0:
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r = self.buf[:i]
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self.buf = self.buf[i+ ld:]
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return r
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