def set_len_and_chksum(self):
"""
Assign length and checksum based on current contents
"""
length, raw_checksum = pyfixmsg.len_and_chsum(self)
self[9] = length
self[10] = self.checksum(raw_checksum)
def checksum(self, value=None):
"""
FIX checksum
"""
if value is None:
value = pyfixmsg.len_and_chsum(self)[1] % 256
return '{0:03d}'.format(value % 256)
def test_checksum(self):
a = self.FixMessage()
a.load_fix(self.fixmessage)
# assert '019' == a.calculate_checksum()
a = self.FixMessage()
a.load_fix(b'8=FIX.4.2|9=49|35=5|34=1|49=WXYZ|52=20150916-04:14:05.306|56=AA|10=191|', separator='|')
assert len_and_chsum(a) == (49, 3263)
assert '191' == a.calculate_checksum()
def length(self):
"""
Length of the body of the message in bytes
"""
return pyfixmsg.len_and_chsum(self)[0]