def encode_comp_header(h_type, cs_id, time, size, msg_type, ms_id):
"""Serialize any type of chunk header."""
if h_type == 3:
# just the "basic header"
return _encode_basic_header(h_type, cs_id, time)
elif h_type == 0:
# delegate
return encode_full_header(cs_id, time, size, msg_type, ms_id)
else:
# check time field overflow
write_time = time
if time >= 0xffffff:
write_time = 0xffffff
h4 = _s_ulong_b.pack(time)
else:
write_time = time
h4 = ''
if h_type == 2:
return (_encode_basic_header(h_type, cs_id) +
_s_time.pack((write_time >> 8) & 0xffff,
write_time & 0xff) +
h4)
return (_encode_basic_header(h_type, cs_id) +
_s_time_size_type.pack((write_time >> 8) & 0xffff,
write_time & 0xff,
(size >> 8) & 0xffff, size & 0xff,
msg_type) +
h4)
def _encode_basic_header(h_type, cs_id, time=None):
if cs_id > 0x013f: # 256 + 63
base = _s_ext_csid.pack((h_type << 6) | 1, cs_id - 64)
elif cs_id > 0x3f: # 63
base = _s_double_uchar.pack(h_type << 6, cs_id - 64)
else:
base = _s_uchar.pack((h_type << 6) | cs_id)
if time >= 0x00ffffff: # implicit None < int
return base + _s_ulong_b.pack(time)
return base
def _encode_basic_header(h_type, cs_id, time=None):
if cs_id > 0x013f: # 256 + 63
base = _s_ext_csid.pack((h_type << 6) | 1, cs_id - 64)
elif cs_id > 0x3f: # 63
base = _s_double_uchar.pack(h_type << 6, cs_id - 64)
else:
base = _s_uchar.pack((h_type << 6) | cs_id)
if time >= 0x00ffffff: # implicit None < int
return base + _s_ulong_b.pack(time)
return base
def encode_full_header(cs_id, time, size, msg_type, ms_id):
"""Serialize an absolute (type 0) chunk header."""
h1 = _encode_basic_header(0, cs_id)
write_time = time
if time >= 0xffffff:
write_time = 0xffffff
h4 = _s_ulong_b.pack(time)
else:
write_time = time
h4 = ''
h2 = _s_time_size_type.pack((write_time >> 8) & 0xffff, write_time & 0xff,
(size >> 8) & 0xffff, size & 0xff, msg_type)
h3 = _s_ulong_l.pack(ms_id)
return h1 + h2 + h3 + h4
def encode_full_header(cs_id, time, size, msg_type, ms_id):
"""Serialize an absolute (type 0) chunk header."""
h1 = _encode_basic_header(0, cs_id)
write_time = time
if time >= 0xffffff:
write_time = 0xffffff
h4 = _s_ulong_b.pack(time)
else:
write_time = time
h4 = ''
h2 = _s_time_size_type.pack((write_time >> 8) & 0xffff, write_time & 0xff,
(size >> 8) & 0xffff, size & 0xff,
msg_type)
h3 = _s_ulong_l.pack(ms_id)
return h1 + h2 + h3 + h4
def encode_comp_header(h_type, cs_id, time, size, msg_type, ms_id):
"""Serialize any type of chunk header."""
if h_type == 3:
# just the "basic header"
return _encode_basic_header(h_type, cs_id, time)
elif h_type == 0:
# delegate
return encode_full_header(cs_id, time, size, msg_type, ms_id)
else:
# check time field overflow
write_time = time
if time >= 0xffffff:
write_time = 0xffffff
if time > 0xffffffff:
time -= 0xffffffff
try:
h4 = _s_ulong_b.pack(time)
except Exception, e:
print 'BAH', h_type, time
h4 = ''
else:
def encode_comp_header(h_type, cs_id, time, size, msg_type, ms_id):
"""Serialize any type of chunk header."""
if h_type == 3:
# just the "basic header"
return _encode_basic_header(h_type, cs_id, time)
elif h_type == 0:
# delegate
return encode_full_header(cs_id, time, size, msg_type, ms_id)
else:
# check time field overflow
write_time = time
if time >= 0xffffff:
write_time = 0xffffff
if time > 0xffffffff:
time -= 0xffffffff
try:
h4 = _s_ulong_b.pack(time)
except Exception, e:
print 'BAH', h_type, time
h4 = ''
else:
def generate_response(self, request):
return buffer(request, 0, 4) + (buffer(_s_ulong.pack(ms_time(self.epoch_time()))) + buffer(request, 8))
def generate_response(self, request):
return (buffer(request, 0, 4) +
(buffer(_s_ulong.pack(ms_time(self.epoch_time()))) +
buffer(request, 8)))