def split_response(stream):
resps = []
while 1:
bs = bytestr(stream)
if len(stream) < 16: break # even not have a complete header
respmagic, compresstype, seqno, packtype, cmd, datalen, origdatalen = bs.read_struct("=4sBIB2sHH")
if respmagic != ResponseMagic:
try:
stream = stream[stream.index(ResponseMagic):]
except:
stream = ''
continue
bs.cut()
if len(bs.buf) < datalen: break
stream = bs.buf[datalen:]
data = bs.read_s(datalen)
if compresstype==0x1c:
try:
data = decompress(data)
except:
data = ''
if origdatalen != len(data):
data = ''
resps.append((seqno, cmd, data))
return tuple(resps), stream
def build_request(cls, seqno, *args, **kwargs):
'''
char zip; // always 0x0c: data-uncompressed
uint seq_id; // 同一种命令的 seq_id。
char packet_type; // 00: 回应。 1,2,3... request count
ushort len; // 数据长度
ushort len1; // 数据长度重复
#ushort cmd; // b4 bf: 分钟线。。b5 bf 单笔成交
'''
bs = bytestr()
bs.write_s(cls.cmd)
cls._build_request(bs, *args, **kwargs)
length = len(bs.buf)
bs.pos = 0
bs.write_struct("=BIBHH", 0x0c, seqno, 1, length, length)
return bs.buf
def parse_response(cls, resp):
bs = bytestr(resp)
return cls._parse_response(bs)
