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import struct
# http://www.bortzmeyer.org/4934.html
def format_32():
# Get the size of C integers. We need 32 bits unsigned.
format_32 = ">I"
if struct.calcsize(format_32) < 4:
format_32 = ">L"
if struct.calcsize(format_32) != 4:
raise Exception("Cannot find a 32 bits integer")
elif struct.calcsize(format_32) > 4:
format_32 = ">H"
else:
pass
return format_32
FORMAT_32 = format_32()
def int_from_net(data):
return struct.unpack(FORMAT_32, data)[0]
def int_to_net(value):
return struct.pack(FORMAT_32, value)
def write(socket, data):
# +4 for the length field itself (section 4 mandates that)
# +2 for the CRLF at the end
length = int_to_net(len(data) + 4 + 2)
socket.send(length)
return socket.send(data + "\r\n")
def read(socket):
net = socket.recv(4)
if net:
length = int_from_net(net)-4
buffer = ''
while (length>len(buffer)):
buffer += socket.recv(4096)
return buffer
hiqdev /
heppy
