http_simple.py 文件源码

def client_encode(self, buf):
        if self.raw_trans_sent:
            return buf
        self.send_buffer += buf
        if not self.has_sent_header:
            self.has_sent_header = True
            data = os.urandom(common.ord(os.urandom(1)[0]) % 96 + 4)
            crc = (0xffffffff - binascii.crc32(data)) & 0xffffffff
            return data + struct.pack('<I', crc)
        if self.raw_trans_recv:
            ret = self.send_buffer
            self.send_buffer = b''
            self.raw_trans_sent = True
            return ret
        return b''