def next_event(self, t):
while True:
ev = self.iom.next_event(None)
# non read channels are simple.
if not isinstance(ev, ioman_base.event_read):
return ev
# an event from a read channel.
# we may receive a part of a message, in which case
# we should not return
ch = ev.ch
buf = ch.buf
if ev.data is not None:
buf.write(ev.data)
# an I/O error or EOF. we return anyway
if ev.eof:
data_to_return = buf.getvalue()
return ioman_base.event_read(ch, data_to_return, 1, ev.err)
elif ev.ch.flag == conf.SOCKET_OUT:
# the first 10 bytes is the length of the mssage
if ch.length == 0:
ch.length = string.atoi(ev.data[0:10])
if len(buf.getvalue()) >= ch.length + 10:
all_data = buf.getvalue()
data_to_return = all_data[0 : ch.length + 10]
buf.truncate(0)
buf.write(all_data[ch.length + 10 :])
ch.length = 0
return ioman_base.event_read(ch, data_to_return, 0, ev.err)
def next_event(self, t):
buf = cStringIO.StringIO()
"""
If multiple clients send data to the same address, we cannot assure the order
of data. So we have to distinct each client here. ch_list is used to keep the
order of channel. Here a event is returned only when ev.eof == 1 (which means
a clint has to be closed after it issues data) and this channel is the first one.
"""
while True:
ev = self.iom.next_event(None)
# non read channels are simple.
if not isinstance(ev, ioman_base.event_read):
return ev
# an event from a read channel.
# we may receive a part of a message, in which case
# we should not return
ch = ev.ch
buf = ch.buf
if ev.data is not None:
buf.write(ev.data)
# an I/O error or EOF. we return anyway
if ev.eof:
return ioman_base.event_read(ch, ch.buf.getvalue(), 1, ev.err)