格式化
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parent
a6ff83f9b7
commit
b1de714ddc
45
server.py
45
server.py
@ -15,8 +15,9 @@ p = {}
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# 地址 ==ccid
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pp = {}
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def add_timestamp():
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print(datetime.datetime.now(),":")
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print(datetime.datetime.now(), ":")
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def save_cache(dic):
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@ -95,6 +96,7 @@ def get_ccid(addr):
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+--------+--------------+----------+----------+--------------+------------------------+--------+
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"""
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def tt_hh(addr, data):
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"""处理心跳"""
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@ -102,8 +104,8 @@ def tt_hh(addr, data):
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ccid = data[7 + offs : 11 + offs]
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update_pairs(addr, ccid)
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# 组帧再返回
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msg=data[:]
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msg[12:-1]=val = '%04x'%int(time.time())
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msg = data[:]
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msg[12:-1] = val = "%04x" % int(time.time())
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# 计算校验和
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crc = 0
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for i in msg[:-1]:
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@ -116,9 +118,9 @@ def tt_hh(addr, data):
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# 从缓存中匹配到数据才重发
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# 仅有新终端上线时才重发
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if ccid in cache:
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msgs = cache[ccid][:] # 浅拷贝
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sccid=msgs[0][7 + offs : 11 + offs]
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print("有",len(msgs),"包缓存数据待发。",sccid,"-->",ccid)
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msgs = cache[ccid][:] # 浅拷贝
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sccid = msgs[0][7 + offs : 11 + offs]
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print("有", len(msgs), "包缓存数据待发。", sccid, "-->", ccid)
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for i in range(len(msgs)):
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try:
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add_timestamp()
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@ -126,24 +128,25 @@ def tt_hh(addr, data):
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addr.send(msgs[i])
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# 成功则清空已发送成功的缓存数据
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cache[ccid].pop(0)
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print("第",i+1,"包缓存数据发送完成。")
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print("第", i + 1, "包缓存数据发送完成。")
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except:
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# 异常时退出循环,不用再尝试发送后续msgs
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print("第",i+1,"包发送失败,停止尝试")
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print("第", i + 1, "包发送失败,停止尝试")
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break
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if cache[ccid] == []:
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print("缓存数据全部发送完成。",sccid,"-->",ccid)
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print("缓存数据全部发送完成。", sccid, "-->", ccid)
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del cache[ccid]
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save_cache(cache)
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return 0
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def check_valid(data):
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# 检查数据有效性
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return bytearray(data[:])
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def tt_trans(addr, data):
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"""发送数据到指定ccid"""
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@ -171,7 +174,7 @@ def tt_trans(addr, data):
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cache[tccid].append(msg)
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save_cache(cache)
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print("终端未在线或ccid",tccid,"错误。数据已缓存,待目标终端上线后重发。")
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print("终端未在线或ccid", tccid, "错误。数据已缓存,待目标终端上线后重发。")
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return 0
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print("匹配在线终端为:", tccid, "<--->", taddr)
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@ -179,7 +182,7 @@ def tt_trans(addr, data):
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try:
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add_timestamp()
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taddr.send(msg)
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print("数据发送成功。",sccid,"-->",tccid)
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print("数据发送成功。", sccid, "-->", tccid)
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except Exception:
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# 发送失败
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taddr.close()
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@ -197,11 +200,11 @@ def tt_trans(addr, data):
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def data_split(data):
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# 按帧头分割长数据
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h= b"$TTMS" #b'\x24\x54\x54\x4d\x53'
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dlist= data.split(h)[1:]
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h = b"$TTMS" # b'\x24\x54\x54\x4d\x53'
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dlist = data.split(h)[1:]
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for i in range(len(dlist)):
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dlist[i] = h + dlist[i]
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print("解析为",len(dlist),"包数据。")
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print("解析为", len(dlist), "包数据。")
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return dlist
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@ -215,7 +218,7 @@ def tt_decode(addr, data):
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# 依据帧头和最小长度初判数据有效性
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# 只要接收数据给的缓存足够大,即使是多条数据组成的长数据也默认帧格式是完整的,前几个字节必须是帧头
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if data[:5] != b"$TTMS" or len(data) < 12 :
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if data[:5] != b"$TTMS" or len(data) < 12:
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return -1
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dlist = data_split(data)
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@ -231,18 +234,16 @@ def tt_decode(addr, data):
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flag = -1
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break
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else:
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flag=0
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flag = 0
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else:
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break
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return flag
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class MyServer(socketserver.BaseRequestHandler):
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def handle(self): # 回调
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add_timestamp()
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print("终端", self.client_address,"已上线,等待上报心跳注册ccid。")
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print("终端", self.client_address, "已上线,等待上报心跳注册ccid。")
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conn = self.request
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# print(type(conn),conn.fd)
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@ -266,7 +267,7 @@ if __name__ == "__main__":
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server = socketserver.ThreadingTCPServer(("", 7222), MyServer)
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add_timestamp()
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print("服务端初始化成功。",server.server_address)
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print("服务端初始化成功。", server.server_address)
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server.serve_forever()
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@ -275,4 +276,4 @@ if __name__ == "__main__":
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单次数据不以帧头开始
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单次数据长度不足11
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未上报心跳(注册ccid)而直接发数据
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"""
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"""
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